General Description
The BQ8211 is a low dropout voltage regulator capable of delivering 300 mA to the load. It is adjustable and can set a precise voltage from 1.175V to 15V with two external resistors. The BQ8211 meets all specifications down to 1.175V output, unlike CMOS LDO’s which loose
performance with outputs below 2.25V.
The enable pin provides a remote turn-off for low power consumption. It draws virtually zero current while in shutdown mode.
To assure accuracy within 2% over temperature, the heart of the BQ8211 is a self-correcting
AcuRef™ bandgap reference.
On-chip current limit and thermal shutdown with hysteresis protects against any combination of
overload and ambient temperature that might cause the junction temperature to exceed safe limits.

Applications
• Graphic cards and PC motherboards
• Cell Phones
• DVD video player

Features
• Low dropout voltage (980mV at 300 mA)
• Enable pin implements sequencing
• Vout tolerance less than 2 % over temperature
• Featured in the very small SOT-23 package
• Stable with low cost 1μF capacitor
• Low ground current
• Thermal protection with hysteresis
• Short circuit protection
• RoHS compliant available

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FEATURES
· Relative Accuracy: ±0.5 LSB
· 16-Bit Monotonic Over Temperature Range
· Low-Noise: 24nV/√Hz
· Fast Settling: 5μs
· On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
· Wide, Single Power Supply: +2.7V to +5.5V
· DAC Loading Control
· Selectable Power-On Reset to Zero-Scale or Midscale
· Power-Down Mode
· Unipolar Straight Binary or 2's Complement Input Mode
· Fast SPI™ Interface with Schmitt-Triggered Inputs: Up To 50MHz, 1.8V/3V/5V Logic
· Small Package: QFN-24, 4x4mm

APPLICATIONS
· Industrial Process Control
· Data Acquisition Systems
· Automatic Test Equipment
· Communications
· Optical Networking

DESCRIPTION
The DAC8881 is a 16-bit, single-channel, voltage-output digital-to-analog converter (DAC) that offers low-power operation and a flexible SPI serial interface. It also features 16-bit monotonicity, excellent linearity, and fast settling time. The on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the full supply range of 2.7V to 5.5V.
The device supports a standard SPI serial interface capable of operating with input data clock frequencies up to 50MHz. The DAC8881 requires an external reference voltage to set the output range of the DAC channel. A programmable power-on reset circuit is also incorporated into the device to ensure that the DAC output powers up at zero-scale or midscale, and remains there until a valid write command.
Additionally, the device has the capability to function in either unipolar straight binary or 2's complement mode. The DAC8881 provides a power-down feature. accessed over thePDN pin, that reduces the current consumption to 25μA at 5V. Power consumption is 6mW at 5V, reducing to 125μW in power-down mode.
The DAC8881 is available in a 4x4mm QFN-24 package with a specified operating temperature range of –40°C to +105°C.

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FEATURES
* Plastic package has Underwriters Laboratory Flammability Classification 94V-0
* For surface mounted applications
* Low profile package
* Built-in strain relief
* Metal silicon junction, majority carrier conduction
* Low power loss, high efficiency
* High current capability, low forward voltage drop
* High surge capability
* For use in low voltage high frequency inverters, free wheeling, and polarity protection applications
* High temperature soldering guaranteed : 260oC/10 seconds at terminals
* Low VF Products

MECHANICAL DATA
Case: JEDEC SMA molded plastic
Terminals: Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity: Color band denotes cathode end
Weight: 0.002 ounce 0.064 gram


MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25oC ambient temperature unless otherwise specified.
Single phase, half wave, 60 HZ, resistive or inductive load.
For capacitive load, derate current by 20%.

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General Description
The WT2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V and an ADJ output version.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator.
The WT2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the WT2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features
* 3.3V, 5V, 12V and adjustable output versions
* Adjustable version output voltage range, 1.23V to 37V ±4% max over line and load conditions
* Guaranteed 3A output current
* Wide input voltage range up to 40V
* Requires only 4 external components
* 52kHz fixed frequency internal oscillator
* TTLshutdown capability, low powerstandby mode
* High efficiency
* Uses readily available standard inductors
* Thermal shutdownand current limit protection

Applications
* Simple high-efficiency step-down (buck) regulator
* Efficient pre-regulator for linear regulators
* On-card switching regulators
* Positive to negative converter (Buck-Boost)

WT2576M33
WT2576M50
WT2576M12

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Features
• Compatible with:
• British Telecom (BT) SIN227 & SIN242
• U.K.’s Cable Communications Association (CCA) specification TW/P&E/312
• Bellcore GR-30-CORE (formerly known as TR-NWT-000030) & SR-TSV-002476
• Bellcore "CPE Alerting Signal (CAS)" and BT "Idle State Tone Alert Signal" detection
• Ring and line reversal detection
• 1200 baud Bell 202 and CCITT V.23 Frequency Shift Keying (FSK) demodulation
• 3 or 5 V ±10% supply voltage
• High input sensitivity (-40 dBV Tone and FSK Detection)
• Selectable 3-wire data interface (microcontroller or MT88E43 controlled)
• Low power CMOS with powerdown mode
• Input gain adjustable amplifier
• Carrier detect status output
• Uses 3.58 MHz crystal

Applications
• BT Calling Line Identity Presentation (CLIP), CCA CLIP, and Bellcore Calling Identity Delivery (CID) systems
• Feature phones, including Analog Display Services Interface (ADSI) phones
• Phone set adjunct boxes
• FAX and answering machines
• Database query and Computer Telephony Integration (CTI) systems

Description
The MT88E43 Calling Number Identification Circuit 2 (ECNIC2) is a low power CMOS integrated circuit intended for receiving physical layer signals transmitted according to BT (British Telecom) SIN227 & SIN242, the U.K.’s CCA (Cable Communications Association) TW/P&E/312 and Bellcore GR-30-CORE & SR-TSV-002476 specifications. The MT88E43 is suitable for applications using a fixed voltage power source between 3 and 5 V ±10%.

MT88E43BE
MT88E43BS
MT88E43BSR
MT88E43BS1
MT88E43BSR1
TAG VOLTAGE

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Features
• 5000Vrms Input/Output Isolation
• Small 4-Pin Package
• 350VP Breakdown Voltage
• Machine Insertable, Wave Solderable
• Surface Mount Tape & Reel Version Available

Applications
• Telecom Switching
• Tip/Ring Circuits
• Modem Switching (Laptop, Notebook, Pocket Size)
• Loop Detect
• Ringing Detect
• Current Sensing

Description
The CPC1301 is an optocoupler with a unidirectional input and a high-voltage Darlington output. Light output from the highly efficient GaAlAs infrared LED activates the optically coupled silicon NPN photo-Darlington output transistor. The input LED and the output transistor are separated by a 5000Vrms isolation barrier. With an LED current of only 1mA, a current transfer ratio of 1000% to 8000% is guaranteed at the collector of the 350V Darlington output transistor.
The CPC1301's low input current, high current transfer ratio, high output voltage capability, and large isolation barrier rating make it ideal for many applications such as telecom, industrial, and power control.

Approvals
• UL Recognized: File # Pending
• CSA Certified: File Number 156092 (LR 43639)
• EN/IEC 60950-1 compliant

CPC1301G
CPC1301GR
CPC1301GRTR

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FEATURES
* LOW TEMPERATURE DRIFT:
+ High-Grade: 3ppm/°C (max)
+ Standard-Grade: 8ppm/°C (max)
* HIGH ACCURACY:
   + High-Grade: 0.05% (max)
   + Standard-Grade: 0.1% (max)
* LOW NOISE: 3μVPP/V
* HIGH OUTPUT CURRENT: ±10mA
* TEMPERATURE RANGE: +40°C to +125°C

APPLICATIONS
* 16-BIT DATA ACQUISITION SYSTEMS
* ATE EQUIPMENT
* INDUSTRIAL PROCESS CONTROL
* MEDICAL INSTRUMENTATION
* OPTICAL CONTROL SYSTEMS
* PRECISION INSTRUMENTATION

DESCRIPTION
The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing, and are very robust with regard to line and load changes.
Excellent temperature drift (3ppm/°C) and high accuracy (0.05%) are achieved using proprietary design techniques. These features, combined with very-low noise make the REF50xx family ideal for use in high-precision data acquisition systems.
Each reference voltage is available in both standardand high-grade versions. They are offered in MSOP-8 (available Q3, 2007) and SO-8 packages, and are specified from +40°C to +125°C.

REF5020
REF5025
REF5030
REF5040
REF5045
REF5050

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FEATURES
1.High current transfer ratio.(CTR:MIN.600% at IF=1mA.VCE=2V)
2.High isolation voltage between input and output (Viso=5000 Vrms).
3.Compact dual-in-line package KB825 :2-channel type
4.Recognized by UL and CUL, file NO.E225308.
5.Rohs Compliant.

DESCRIPTION
1.The KB825 (2-channel) is optically coupled isolators containing a GaAS light emitting diode and a darlington silicon phototransistor.
2.The lead pitch is 2.54mm.

APPLICATIONS
1.Computer terminals.
2.Registers,copiers,automatic vending machines.
3.System appliances, measuring instruments.
4.Industial robots.
5.Signal transmission between circuits of different potentials and impedances.

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Features
* 3 Ampere low dropout voltage
* Embedded overtemperature, overcurrent protections
* Adjustable overcurrent limitation
* Output overload monitoring/signalling
* Adjustable output voltage
* Inhibit (ON/OFF) TTL Compatible Control
* Programmable output short circuit current
* Remote sensing operation
* RADHARD: Guaranteed up to 300krad in MIL 1019.6 High Dose Rate and 0.01Rad/sec ELDRS Conditions
* Heavy IONS SEL, SEU Immune. Sustains 2x1014 proton/cm2, And 2x1014 neutron/cm2

Description
The RHFL4913 ADJUSTABLE is a high performance Adjustable Positive Voltage Regulator providing exceptional radiation performances, tested in accordance with Mil Std 1019.6 ELDRS conditions.
Available in Flat-16 and new SMD5C hermetic ceramic packages and as QmlV-Die, it is specifically intended for Space and harsh radiation environments. Input supply range is up to 12 volts.
The RHFL4913 ADJUSTABLE is Qml-V Qualified, DSCC Smd is 5962F02524.

RHFL4913KPA-01V
RHFL4913KPA-02V

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GENERAL DESCRIPTION
The CM2593/P is a monolithic integrated circuit that provide all the active functions for a step-down switching regulator, capable of driving a 2A load without additional transistor component. Requiring a minimum number of external component, the board space can be saved easily. The external shutdown function can be controlled by TTL logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design.
Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. The CM2593/P operates at a switching frequency of 150Khz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V,  5V, and an adjustable type. The packages are available in a standard 8-lead SOP8.

FEATURES
* 3.3V, 5V and adjustable output versions
* Adjustable version output voltage range, 1.23V to 37V +4% max over line and load condition
* SOP-8L packages
* Voltage mode non-synchronous PWM control
* Thermal-shutdown and current-limit protection
* ON/OFF shutdown control input
* Input voltage range up to 40V
* Output load current: 2A
* 150 kHz fixed frequency internal oscillator
* Low power standby mode
* Built-in switching transistor on chip

APPLICATIONS
* Simple High-efficiency step-down(buck) regulator
* Efficient pre-regulator for linear regulators
* On-card switching regulators
* Battery / Car Charger
* Positive to negative converter
* Digital Still and Video Cameras

CM2593P

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