GENERAL DESCRIPTION
The CM3706 is a 1.5MHz constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The CM3706 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The CM3706 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications.
The CM3706 is offered in a low profile (1mm) 5-pin, thin TSOT package, and is available in an adjustable version.

FEATURES
*High Efficiency: Up to 96%
*1.5Mhz Constant Switching Frequency
*600mA Output Current at VIN=3V
*Integrated Main switch and synchronous rectifier. No Schottky Diode Required
*2.5V to 5.5V Input Voltage Range
*Output Voltage as Low as 0.6V
*100% Duty Cycle in Dropout
*Low Quiescent Current: 300μA
*Slope Compensated Current Mode Control for Excellent Line and Load Transient Response
*Short Circuit Protection
*Thermal Fault Protection
*<1uA Shutdown Current
*Space Saving 5-Pin Thin TSOT23 package

APPLICATIONS
*Cellular and Smart Phones
*Microprocessors and DSP Core Supplies
*Wireless and DSL Modems
*PDAs
*MP3 Players
*Portable Instruments
*Digital Still and Video Cameras

CM3706IM25, CM3706GIM25

GENERAL DESCRIPTION
The CM6903A is a space-saving PFC-PWM controller for power factor corrected, switched mode power supplies that offers very low start-up and operating currents. For the power supply less than 500Watt, its input current shaping PFC performance could be very close to CM6800 or ML4800 architecture.
Power Factor Correction (PFC) offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications. The CM6903A includes circuits for the implementation of a leading edge, input current shaping technique “boost” type PFC and a trailing edge, PWM.
The CM6903A’s PFC and PWM operate at the same frequency, 67kHz. This higher frequency allows the user to design with smaller PWM components while maintaining the optimum operating frequency for the PFC. An PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting for enhanced system reliability.

FEATURES
*Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635
*Pin to pin compatible with FAN6903/4
*Enable lowest BOM for power supply with PFC
*Internally synchronized PFC and PWM in one IC
*Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique
*Universal Line Input Voltage
*CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique
*Feedforward IAC pin to do the automatic slope compensation
*PFCOVP, PFC VCCOVP, Precision -1V PFC ILIMIT, Tri-Fault Detect comparator to meet UL1950
*No bleed resistor required
*Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
*Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor between the PFC and PWM sections and to reduce switching noise in the system
*VINOK Comparator to guarantee to enable PWM when PFC reach steady state
*High efficiency trailing-edge current mode PWM
*UVLO, REFOK, and brownout protection
*Digital PWM softstart: CM6903A (10ms)
*Precision PWM 1.5V current limit for current mode operation

APPLICATIONS
*Desktop PC Power Supply
*AC Adaptor
*Internet Server Power Supply
*IPC Power Supply
*UPS
*Battery Charger
*DC Motor Power Supply
*Monitor Power Supply
*Telecom System Power Supply
*Distributed Power

CM6903AIZ, CM6903AGIZ

GENERAL DESCRIPTION
The CM1117 series of adjustable and fixed voltage regulators are designed to provide 1A for applications requiring high efficiency. All internal circuitry is designed to operated down to 800mV input to output differential and the dropout voltage is fully specified as a function of load current.
The CM1117 offers current limiting and thermal protection.
The on chip trimming adjusts the reference voltage accuracy to 1%.

FEATURES
*Three Terminal Adjustable or Fixed Voltages: 1.8V, 2.5V, 3.3V, and adjustable.
*Output Current of 1A
*Low dropout voltage: 1V Typ.
*Line Regulation: 0.2% Max
*Load Regulation: 0.4% Max
*Fast Transient Response
*Thermal Protection
*SOT-223 and TO-252 package available

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*Battery Chargers
*Active SCSI Terminators
*Post Regulator for Switching DC/DC Converter
*Battery Powered Instrumentation

CM1117DCN252, CM1117KCN252, CM1117SCN252, CM1117CN252

GENERAL DESCRIPTION
The CM6805A is the Green-Mode PFC/PWM Combo controller for Desktop PC and High Density AC Adapter. For the power supply, it’s input current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.
CM6805A offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications. The CM6805A includes circuits for the implementation of a leading edge modulation, input current shaping technique “boost” type PFC and a trailing edge modulation current, PWM.
The CM6805A’s PFC and PWM operate at the same frequency, 67.5kHz. A PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting for enhanced system reliability.
PFC has a PFCOFFB pin which can use for AC brown out application and determine the GMth to turn off PFC.

FEATURES
*10-Pin SOIC package.
*Use RAC around 4~8 Mega Ohm at IAC pin.
*Easy to configure into Boost Follower.
*Enable lowest BOM for power supply with PFC.
*Internally synchronized PFC and PWM in one IC.
*Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique.
*Universal Line Input Voltage
*CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping
Technique.
*Feed forward IAC pin to do the automatic slope compensation.
*PFCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
*Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
*Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the
storage capacitor between the PFC and PWM sections and to reduce switching noise in the system
*VIN-OK Comparator to guarantee to enable PWM when PFC reach steady state
*High efficiency trailing-edge current mode PWM
*Exact 50% PWM maximum duty cycle
*UVLO, REFOK, and brownout protection
*Digital PFC and PWM soft start, ~10mS
*Precision PWM 1.5V current limit for current mode operation
*PFCOFFB pin to sense light load to turn off PFC or PFCOFFB pin to sense Input voltage as AC Brown Out

CM6805AGIR

GENERAL DESCRIPTION
The CM2596S series are step-down switching regulators with all required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.
The CM2596S series offers a high-efficiency replacement for popular three-terminal linear regulators. Also it requires a minimum number of external components. It substantially not only reduces the area of board size but also the size of the heat sink, and in some cases no heat sink is required.
±4% tolerance on output voltage within specified input voltages and output load conditions is guaranteed. Also, the oscillator frequency accuracy is within ±15%. External shutdown is included, featuring 150μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

FEATURES
*Guaranteed 3A output current
*3.3V, 5V, and adjustable versions
*Wide input voltage range, up to 40V
*Internal oscillator of 150KHz fixed frequency
*Wide adjustable version output voltage range, from 1.23V to 37V±4% max over line and load conditions
*Low standby current, typ. 150μA, at shutdown mode
*Requires only 4 external components
*Thermal shutdown and current limit protection
*Requires only 4 external components
*Excellent line and load regulation specifications
*TTL shutdown capability

APPLICATIONS
*LCD Monitors
*ADD-ON Cards Switching Regulators
*High Efficiency Step-Down Regulators
*Efficient Pre-regulator for Linear Regulators

CM2596SSCN220, CM2596SZJCN220, CM2596SCN220, CM2596SGSCN220, CM2596SGZJCN220, CM2596SGCN220, CM2596SGCN220B, CM2596SSCN263, CM2596SZJCN263, CM2596SCN263, CM2596SGSCN263, CM2596SGZJCN263, CM2596SGCN263

GENERAL DESCRIPTION
The CM2836/B/C family is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30μA typ.), low dropout voltage, and high output voltage accuracy, making them ideal for battery applications.
EN input connected to CMOS has low bias current. The space-saving SC70 package is attractive for “Pocket” and “Hand Held” applications.
These rugged devices have both Thermal Shutdown, and Current limit to prevent device failure under the “Worst” of operating conditions.
In application requiring a low noise, regulated supply, place a 1000pF capacitor between Bypass and Ground.
The CM2836/B/C is stable with a Low ESR output capacitance of 1.0μF or greater.

FEATURES
*Very Low Dropout Voltage
*Low Current Consumption: Typ. 30μA, Max. 35μA
*More Options Output Voltage
*High Accuracy Output Voltage: +/- 2%
*Guaranteed 300mA Output
*Input Range up to 7.0V
*Thermal Shutdown
*Current Limiting
*Stability with Low ESR Capacitors
*Compact Package: SOT-23 / SOT-89 / SC70
*Factory Pre-set Output Voltages
*Low Temperature Coefficient

APPLICATIONS
*Battery-powered devices
*Personal communication devices
*Home electric/electronic appliances
*PC peripherals

CM2836B, CM2836C, CM2836GSIM23, CM2836BGSIM23, CM2836CGSIM23, CM2836GSIM25, CM2836BGSIM25, CM2836CGSIM25, CM2836GSIM89, CM2836BGSIM89, CM2836CGSIM89, CM2836GSIM75, CM2836BGSIM75, CM2836CGSIM75

GENERAL DESCRIPTION
The CM6802 is a green PFC/PWM. It is the new generation of ML4802, ML4841, ML4801 and ML4824-2. Its system clock frequency is generated by the external RT and CT, and then its PWM frequency is 50% of the clock and its PFC frequency is 25% of the clock. CM6802 is designed to be pin-pin compatible with CM6800 family, ML4800 family and ML4824 family. Its PWM (DC to DC section) can be easily configured to Voltage Mode or Current Mode. The green mode function can easily be designed so during the no load condition, its input power can be less than 0.75Watt without shutting off PFC. Its PFC green mode threshold and the PWM green mode threshold can separately set by selecting the proper the RC filter at ISENSE pin (pin3) and CT on RAMP 1 pin (pin 7). Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications. Intended as a BiCMOS version of the industry-standard CM6800, CM6802 includes circuits for the implementation of leading edge, average current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). Both PFC and PWM Gate-driver with 0.5A capabilities minimizes the need for external driver circuits. Low power requirements improve
efficiency and reduce component costs.
An over-voltage comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection. The PWM section can be operated in current or voltage mode, at up to 250kHz, and includes an accurate 50% duty cycle limit to prevent  ransformer saturation.
When RAMP1 is 280KHz, fpfc is 70KHz and fpwm is 140KHz.

FEATURES
*Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635
*fosc=2 x fpwm =4 x fpfc
*No bleed resistor required
*Before the chip wakes up, IAC can start up VCC
*Pin to pin Compatible with CM6800, ML4824 and ML4800 (It needs to modify the values of the external component to work properly).
*User Program PFC automatic green mode threshold (patented)
*User Program PWM automatic green mode threshold (patented)
*Input power less than 0.75Watt without shutting off PFC at no load condition.
*Additional folded-back current limit for PWM section.
*23V Bi-CMOS process
*PWM pulse keeping for the green mode
*VIN OK guaranteed turn on PWM at 2.5V instead of 1.5V
*Internally synchronized leading edge PFC and trailing edge PWM in one IC
*Slew rate enhanced transconductance error amplifier for ultra-fast PFC response
*Low start-up current (30μA typ.)
*Low operating current (3.0mA type.)
*Low total harmonic distortion, high PF
*Reduces ripple current in the storage capacitor between the PFC and PWM sections
*Average current, continuous or discontinuous boost leading edge PFC
*VCC OVP Comparator will turn off both PFC and PWM
*Low Power Detect Comparator
*Tri-Fault detect to meet UL1950
*PWM configurable for current mode or voltage mode operation
*Current fed gain modulator for improved noise immunity
*Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK

APPLICATIONS
*Desktop PC Power Supply
*Internet Server Power Supply
*IPC Power Supply
*UPS
*Battery Charger
*DC Motor Power Supply
*Monitor Power Supply
*Telecom System Power Supply
*Distributed Power

CM6802IP, CM6802IS

GENERAL DESCRIPTION
The CM6800A is a controller for power factor corrected, switched mode power suppliers.
Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors,
reduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications.
Intended as a BiCMOS version of the industry-standard ML4824, CM6800A includes circuits for the implementation of leading edge, average current, “boost” type power factor correction and a
trailing edge, pulse width modulator (PWM).
Gate-driver with 1A capabilities minimizes the need for external driver circuits.
Low power requirements improve efficiency and reduce component costs.
An over-voltage comparator shuts down the PFC section in the event of a sudden decrease in load.
The PFC section also includes peak current limiting and input voltage brownout protection.
The PWM section can be operated in current or voltage mode, at up to 250kHz, and includes an
accurate 50% duty cycle limit to prevent transformer saturation.
CM6800A includes an additional folded-back current limit for PWM section to provide short circuit protection function.

FEATURES
* Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635
* Pin to pin compatible with ML4800 and FAN6800
* Additional folded-back current limit for PWM section.
* 23V Bi-CMOS process
* VIN OK turn on PWM at 2.25V instead of 1.5V(ML4800).
* Internally synchronized leading edge PFC and trailing edge PWM in one IC
* Slew rate enhanced transconductance error amplifier for ultra-fast PFC response
* Low start-up current (100 μ A typ.)
* Low operating current (3.0mA type.)
* Low total harmonic distortion, high PF
* Reduces ripple current in the storage capacitor between the PFC and PWM sections
* Average current, continuous or discontinuous boost leading edge PFC
* VCC OVP Comparator, Low Power Detect Comparator
* PWM configurable for current mode or voltage mode operation
* Current fed gain modulator for improved noise immunity
* Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK

APPLICATIONS
* Desktop PC Power Supply
* Internet Server Power Supply
* IPC Power Supply
* UPS
* Battery Charger
* DC Motor Power Supply
* Monitor Power Supply
* Telecom System Power Supply
* Distributed Power

CM6800AGIP
CM6800AGIS

GENERAL DESCRIPTION
The CM8562B is a low cost linear regulator designed to provide a desired output voltage or termination voltage for various applications by converting voltage supplies ranging from 1V to 6.0V. The desired output voltage could be programmable by two external voltage divider resistors.
The CM8562B is capable of sourcing or sinking up to 1.8A of current while regulating an output VOUT voltage to within 2%(DDR-I) , 3% (DDR-ll) or less.
The CM8562B provides low profile 8-pin SOIC package to save system space.

FEATURES
* Ideal for DDR-l、DDR-ll and DDR-lll
* 8-pin SOIC w/ power pad package, 5-Lead SOT-252 package
* 2 ways to adjust the output, VOUT with VFB pin
* Source and sink up to 1.8A , no heat sink required
* Integrated power MOSFETs
* Programmable output voltage by external resistors
* Output voltage could go down to 0.6V
* Iccq at VCCA less than 500uA
* Current limit protection and Short Circuit protection
* Thermal shutdown protection
* Shutdown for standby or suspend mode operation
* Minimum external components

APPLICATIONS
* Mother Board
* PCI/AGP Graphics
* Game/ Play Station
* Set Top Box
* IPC
* SCSI-III Bus terminator

CM8562BIS
CM8562BIN252
CM8562BGIS
CM8562BGIN252

GENERAL DESCRIPTION
 The CM6805BO is the Green-Mode PFC/PWM Combo controller for Desktop PC and High Density AC Adapter.
For the power supply, it’s input current shaping PFC performance could be very close to the performance of the CM6800 or ML4800 leading edge modulation average current topology.
CM6805BO offers the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply fully compliant to IEC1000-3-2 specifications.
The CM6805BO includes circuits for the implementation of a leading edge modulation, input current shaping technique “boost” type PFC and a trailing edge modulation current, PWM.
The CM6805BO’s PFC and PWM operate at the same frequency, 100kHz.
A PFC OVP comparator shuts down the PFC section in the event of a sudden decrease in load.
The PFC section also includes peak current limiting for enhanced system reliability.
PFC has a PFCOFFB pin which can use for AC brown out application and determine the GMth to turn off PFC.

FEATURES
* 10-Pin SOIC package.
* Use RAC around 4~8 Mega Ohm at IAC pin.
* Easy to configure into Boost Follower.
* Enable lowest BOM for power supply with PFC.
* Internally synchronized PFC and PWM in one IC.
* Patented slew rate enhanced voltage error amplifier with advanced input current shaping technique.
* Universal Line Input Voltage
* CCM boost or DCM boost with leading edge modulation PFC using Input Current Shaping Technique.
* Feed forward IAC pin to do the automatic slope compensation.
* PFCOVP, Precision -1V PFC ILIMIT, PFC Tri-Fault Detect comparator to meet UL1950
* Low supply currents; start-up: 100uA typical, operating current: 2mA typical.
* Synchronized leading PFC and trailing edge modulation PWM to reduce ripple current in the storage capacitor between the PFC and PWM sections and to reduce switching noise in the system
* VIN-OK Comparator to guarantee to enable PWM when PFC reach steady state
* High efficiency trailing-edge current mode PWM
* Exact 50% PWM maximum duty cycle
* UVLO, REFOK, and brownout protection
* Digital PFC and PWM soft start, ~10mS
* Precision PWM 1.5V current limit for current mode operation
* PFCOFFB pin to sense light load to turn off PFC or PFCOFFB pin to sense Input voltage as AC Brown Out

CM6805BOGIR