Regulator

LM3402 Datasheet – 0.5A, Constant Current Buck Regulator

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Part Number: LM3402

Function: 0.5A, Constant Current Buck Regulator for Driving High Power LED

Package: MSOP-8 Type

Manufacturer: Texas Instruments

Pinouts:

LM3402 datasheet

 

Description

The LM3402 / LM3402HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 735mA (typical) for step-down (Buck) regulators. Hysteretic control with controlled on-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series – parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.

Features

• Integrated 0.5A N-channel MOSFET
• VIN Range from 6V to 42V (LM3402)
• VIN Range from 6V to 75V (LM3402HV)
• 500 mA Output Current Over Temperature
• Cycle-by-Cycle Current Limit
• No Control Loop Compensation Required
• Separate PWM Dimming and Low Power Shutdown
• Supports All-ceramic Output Capacitors and Capacitor-less Outputs
• Thermal Shutdown Protection
• VSSOP, SO PowerPAD Packages

Applications

1. LED Driver
2. Constant Current Source
3. Automotive Lighting
4. General Illumination
5. Industrial Lighting

Other data sheets are available within the file:

LM3402HV, LM3402HVMM/NOPB, LM3402HVMMX/NOPB, LM3402HVMR/NOPB

LM3402 Datasheet PDF Download


LM3402 pdf

APL5508 Datasheet – Low Dropout Fixed Voltage Regulator

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Part Number: APL5508

Function: 3.1 V, low IQ, low dropout 560 mA fixed voltage regulator

Package: SOT-23-3, SOT-89, or SOT-223 Type

Manufacturer: Anpec Electronics

Pinouts:

APL5508 datasheet

 

Description

The APL5508 / APL5508R / APL5509 / APL5509R is low-power and low dropout li near regulator, which operates in the rage of 2.7V to 6V input voltage and delivers up to 560mA output current. T ypical dropout voltage is only 600mV (typical) at 560mA output current. The IC regulator with low 60mA quiescent current is ideal for battery powered system appliances. The regulator is stable with a 4. 7mF cerami ccapacitor. The features of current-limit, short circuit current limit, and over-temperature protecti on protect the device against current over loads and over temperature.

Features

• Low  Quiescent Current : 60mA (No load)
• Low  Dropout V oltage : 600mV (@560mA)
• Very Low Shutdown  Current : <  0.5mA
• Fixed  Output  V oltage  :  1.5V ~ 4.5V by Step 0.1V Increment
• Stable  with  Aluminum, T antalum, or  Ceramic Capacitors
• No  Protection  Diodes  Needed
• Built-In  Thermal  Protection
• Built-In  Current-Limit  Protection
• Controlled  Short  Circuit  Current  :  50mA
• Fast Transient Response
• Lead Free  and  Green  Devices  Available(RoHS  Compliant)

Other data sheets are available within the file:

APL5508-15A, APL5508-16A, APL5508-17A, APL5508-18A

APL5508 Datasheet PDF Download


APL5508 pdf