DESCRIPTION
The LTM®8027 is a complete 4A, DC/DC step-down power supply. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 4.5V to 60V (7.5V minimum voltage to start), the LTM8027 supports output voltages up to 24V, and a switching frequency range of 100kHz to 500kHz, each set by a single resistor. Only the bulk input and output fi lter capacitors are needed to fi nish the design.
The low profi le package (4.32mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. A built-in soft-start timer is adjustable with a small capacitor.
The LTM8027 is packaged in a thermally enhanced, compact (15mm × 15mm) and low profi le (4.32mm) over-molded land grid array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8027 is Pb-free and RoHS compliant.

FEATURES
*Complete Switch Mode Power Supply
*Wide Input Voltage Range: 4.5V to 60V (7.5V Minimum Voltage to Start)
*Wide Output Voltage Range: 2.5V to 24V (See Table 2)
*4A Output Current
*Programmable Soft-Start
*10μA Shutdown Supply Current
*Selectable Switching Frequency Current Mode Control
*Up to 95% Effi ciency
*Pb-Free (e4) RoHS Compliant Package with Gold Pad Finish
*Tiny, Low Profi le (15mm × 15mm × 4.32mm) Surface Mount LGA Package

APPLICATIONS
*12V and 42V Automotive and Heavy Equipment
*48V Telecom Power Supplies
*Avionics and Industrial Control Systems
*Distributed Power Converters

LTM8027EVPBF, LTM8027IVPBF, LTM8027MPVPBF, LTM8027EV, LTM8027IV

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Description
The SG1577A is a high-efficiency, voltage-mode, dualchannel, synchronous DC/DC PWM controller for two independent outputs. The two channels are operated out of phase. The internal reference voltage is trimmed to 0.7V±1.5%. It is connected to the error amplifier’s positive terminal for voltage feedback regulation.
The soft-start circuit ensures the output voltage can be gradually and smoothly increased from zero to its final regulated value. The soft-start pin can also be used for chip-enable function. When two soft-start pins are grounded, the chip is disabled and the total operation current can be reduced to under 0.7mA.
The fixed-frequency is programmable from 60kHz to 340kHz. The Over-Current Protection (OCP) level can be programmed by an external current sense resistor. It has two integrated sets of internal MOSFET drivers.
SG1577A is available in a 20-pin SOP package.

Features
*Integrated Two Sets of MOSFET Drivers
*Two Independent PWM Controllers
*Constant Frequency Operation: Free-running Fixed Frequency Oscillator Programmable: 61kHz to 340kHz
*Maximum Input Supply Voltage: 15V
*Programmable Output as Low as 0.7V
*Internal Error Amplifier Reference Voltage: 0.7V±1.5%
*Two Soft-Start / EN Functions
*Programmable Over-Current Protection (OCP)
*30V HIGH Voltage Pin for Bootstrap Voltage
*Output Over-Voltage Protection (OVP)
*20-Pin SOP

Applications
*CPU and GPU Vcore Power Supply
*Power Supply Requiring Two Independent Outputs

SG1577ASY

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DESCRIPTION
The 6-PAK™ is a modular system of control and boost SIPs. Each 6A control SIP can also drive up to 8 additional 6A boost SIPs in parallel, for a total of 54A. Each SIP accepts a regulated 5V input (+10%) and provides 2.5V to 3.6Vdc output. The circuit is optimized for high efficiency and fast load transient response needed by telecom, DSP and microprocessor applications.
Advanced thermal design, monolithic power circuitry and synchronous rectification result in outstanding performance and value. With integrated input filter and output capacitors, the 6-PAK system makes a complete power supply which requires no external components over the specified operating range. Pins are staked for wave solderability.

FEATURES
*Small SIP Design
*Parallelable Boost SIP
-One stocking part meets a variety of loads
*Programmable Control SIP
-Control/Boost Pair extremely configurable
*Fast Transient Response
-No need for large external capacitors
-Extremely small footprint
*Low Component Count
-Low cost, high reliability
*Staked Pins
-Wave solderable
*Integrated Input Filter
-Low input ripple

6P25-CA, 6P25-P

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Description
The Bel SRDC-16D180 module is one in a series of non-isolated, DC/DC power converters that operate from a wide input range of 3V minimum to 15V maximum. This converter is available with 1.8V output. It uses a low profile, surface mount DIP package for ease of layout and space savings. 16A maximum output is also provided. Standard features include remote on/off, over current and short circuit protection, programmable UVLO and output voltage adjust. Optional features include two-wire remote sense or single-ended remote sense with a good power signal. This module also makes use of adaptive positioning to improve transient response performance. It may be used almost anywhere low voltage silicon is employed and a 3 to 15V source is available. Typical applications include file servers, routers, line cards and other computing and communications equipment.

Features
*Nonisolated
*Industry standard pinout
*Fixed frequency
*High efficiency means less power dissipation
*High power density
*Optimized for cost
*Remote on/off
*Programmable undervoltage lockout (UVLO)
*Over current and short circuit protection
*Two phase operation
*Non-latching over temperature shutdown protection

Applications
*Telecommunications
*Networking
*Computers and peripherals

SRDC-16D18S, SRDC-16D18D

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DESCRIPTION
The PWR60XX Series offers a low-cost alternative for some of the most popular DC/DC converters industry wide. Each model has very low noise and an outstanding MTTF. The superior reliability, excellent filtering, and low cost make it an excellent choice for industry-standard usage.
The series includes eleven models (other input and output voltages are available upon request), all set in an encapsulant for excellent thermal dissipation for internal components. The use of surface-mount devices and manufacturing processes combined with the encapsulation process, provides the user a product that is more environmentally rugged.
The PWR60XX has full isolation between input and output to give the designer maximum flexibility in grounding options and polarity configurations. The outputs are protected against shorts to increase the units survivability in harsh environments.

FEATURES
*Low Cost
*Low Noise
*Industry-Standard Package
*Single and Dual Outputs
*High Isolation Voltage Option Available
*Linear Output Regulation
*Internal Input and Output Filtering
*Low EMI Transformer Design
*No External Components Required
*Thermal Shutdown Protection

PWR6000, PWR6004, PWR6005, PWR6006, PWR6010, PWR6011, PWR6012

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Description
The Bel SRDC-16D120 module is one in a series of non-isolated, DC/DC power converters that operate from a wide input range of 3V minimum to 15V maximum. This converter is available with 1.2V output. It uses a low profile, surface mount DIP package for ease of layout and space savings. 16A maximum output is also provided. Standard features include remote on/off, over current and short circuit protection, programmable UVLO and output voltage adjust. Optional features include two-wire remote sense or single-ended remote sense with a good power signal. This module also makes use of adaptive positioning to improve transient response performance. It may be used almost anywhere low voltage silicon is employed and a 3 to 15V source is available. Typical applications include file servers, routers, line cards and other computing and communications equipment.

Features
*Nonisolated
*Industry standard pinout
*Fixed frequency
*High efficiency means less power dissipation
*High power density
*Optimized for cost
*Remote on/off
*Programmable undervoltage lockout (UVLO)
*Over current and short circuit protection
*Two phase operation
*Non-latching over temperature shutdown protection

Applications
*Telecommunications
*Networking
*Computers and peripherals

SRDC-16D12S, SRDC-16D12D

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DESCRIPTION
The MB39A107 is a DC/DC converter IC suitable for down-conversion, using pulse-width modulation (PWM) charging and enabling output voltage to be set to any desired level from 1 cell to 4 cells.
The MB39A107 adopts output for Nch MOS drive of synchronous rectification type.
The MB39A107 can be used to monitor the current in an AC adapter or battery, as it contains a current amplifier that can set an offset voltage.
It can also be used for applications such as setting the charging voltages for 2 batteries.
The MB39A107 provides a broad power supply voltage range and low standby current as well as high efficiency, making it ideal for use as a built-in charging device in products such as notebook PC.

FEATURES
*Built-in low-current control circuits in two systems (supporting dynamically controlled charging)
*The charge current value can be analog controlled (+INE1 and +INE2 terminal)
*Built-in synchronous rectification system output for Nch MOS FET
*Built-in charge pump for driving high-side Nch MOS, providing 100% on-duty support
*Built-in AC adapter detection function
*Output voltage setting accuracy : 4.2 V ± 0.74 % (Ta = - 10 °C to + 85 °C)
*Built-in high accuracy current detection amplifier : ± 5 % (input voltage difference at 100 mV), ±15 % (input voltage difference at 20 mV)
*Output voltage setting using external resistor : 1 cell to 4 cells
*Oscillation frequency range : 100 kHz to 1 MHz
*In standby mode, leave output voltage setting resistor open to prevent inefficient current loss.
*Built-in standby current function : 0 mA (Typ)
*Built-in soft-start function independent of loads

MB39A107PFT

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DESCRIPTION
The 6-PAK™ is a modular system of control and boost SIPs. Each 6A control SIP can also drive up to 8 additional 6A boost SIPs in parallel, for a total of 54A. Each SIP accepts a regulated 5V input (+10%) and provides 2.5V to 3.6Vdc output. The circuit is optimized for high efficiency and fast load transient response needed by telecom, DSP and microprocessor applications.
Advanced thermal design, monolithic power circuitry and synchronous rectification result in outstanding performance and value. With integrated input filter and output capacitors, the 6-PAK system makes a complete power supply which requires no external components over the specified operating range. Pins are staked for wave solderability.

FEATURES
*Small SIP Design
*Parallelable Boost SIP
-One stocking part meets a variety of loads
*Programmable Control SIP
-Control/Boost Pair extremely configurable
*Fast Transient Response
-No need for large external capacitors
-Extremely small footprint
*Low Component Count
-Low cost, high reliability
*Staked Pins
-Wave solderable
*Integrated Input Filter
-Low input ripple

APPLICATION NOTE
*DCAN-34 - 6-PAK Demo Board

6P25-CA, 6P25-P

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DESCRIPTION
The PWR70XXAC Series uses advanced circuit design and packaging technology to realize superior reliability and performance. A 170kHz driven push-pull oscillator is used to ensure stable frequency and non-saturating operation of the input stage. This means there are no high peak voltages or currents like other design topologies, which can severely reduce unit reliability. Reliability is further enhanced by the use of MOSPOWER transistors. These rugged devices permit higher frequency operation with less complicated drive circuitry than is possible with bipolar power transistors. Reduced parts count adds to the reliability of the PWR70XXAC Series.
Continuous short-circuit protection and foldback current limiting make the PWR70XXAC Series rugged devices for use in demanding system applications. These features add to the overall reliability of the PWR70XXAC Series by reducing the possibility of inadvertently damaging the unit due to an output overload.
The high efficiency of the PWR70XXAC Series means low internal power dissipation. With less heat dissipated, the PWR70XXAC Series can operate at higher ambient temperature with no degradation of reliablility.
The PWR70XXAC Series offers the user low cost without sacrificing reliability. The use of surface mounted devices and manufacturing technologies makes it possible to offer premium performance and low cost.

FEATURES
*HIGH RELIABILITY
*SHORT-CIRCUIT PROTECTED
*HIGH EFFICIENCY
*LINEAR OUTPUT REGULATED
*TRACKING OUTPUTS
*SIX-SIDED SHIELDING
*INTERNAL INPUT AND OUTPUT FILTERING
*NON-CONDUCTIVE CASE
*INDUSTRY STANDARD PINOUT
*500VDC ISOLATION

PWR7005AC

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Description
The xRP2-40E1A1 is a non-isolated dc/dc converter that operates over a wide range of input voltage (Vin = 5 Vdc - 13.8 Vdc). This unit can provide a precisely regulated output voltage from 0.6 Vdc to 5.0 Vdc and can deliver up to 40 A of output current. This unit is designed to be highly efficient and low cost. The converter is provided in an industry standard package.

Features
*Non-Isolated
*High Efficiency
*Fixed Switching Frequency
*Low Cost
*Excellent Thermal Performance
*Wide Input Voltage Range
*Wide Output Trim Range
*Output Over-Voltage Shutdown
*OCP/SCP
*Low Output Ripple
*Power Good Signal
*Remote On/Off

0RP2-40E1A1, VRP2-40E1A1

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