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IC LP3772-1/2 7.5W SOT23-6
LP3772 is a high performance constant voltage and constant current control chip (CV/CC) without requiring opto-coupler and the secondary control circuitry ,using Pulse Frequency Modulation (PFM) method to build discontinuous conduction mode (DCM) flyback power supplies. LP3772 driving the external power triode, is the best choice for the low power adapter and charger. LP3772 adopting unique output line loss compensation technology, can effectively compensate the loss of output current on the output line voltage drop by adjusting the FB partial pressure resistance tolerance.
Features
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1) Without requiring opto-coupler and TL431,to implement low cost compact design
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2)Adjusting the external power triode,to meet the different requirements of power output 、efficiency and temperature
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3)Internal error amplifier for CV/CC operation
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4)Built-in loop compensation, without external compensation capacitance
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5)constant current external adjustable
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6)Over voltage protection, short circuit protection, VCC under-voltage protection
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7) Low standby power consumption for US DoE VI
Application
Adapter, battery charger, standby power supply,LED drive power supply,Upgrading the best choice - linear power supply and RCC switching power supply
Recommended Power Usage
Model |
Vin:90VAC~265VAC,50/60Hz |
LP3772-1 |
7.5W |
LP3772-2 |
7.5W |
Pin Definition
Order Information
Model
|
Definition |
Package |
|
LP3772-1 |
SOT23-6 |
|
LP-1 |
LP3772-2 |
SOT23-6 |
|
LP-2 |
Products Category
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