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TC3776A

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Package : SOP-7
With MOSFET : Built-in
MOSFET/BJT : BJT
BVdss : 850V
RDS(on) : 0.3A
Standby Power : <75mW
CC/CV Precision : ±5%
Max Vdd : --
Max Oper.Frequency : 60K
Output Power : 2.5W(5V0.5A)
Product details

product description

The TC3776 series is a highly integrated self-powered PSR control chip for isolated adapters and chargers. The peripheral design is extremely simple. The TC3776 series fixes the peak current of the primary side, and sets the output constant current point through the primary and secondary turns ratio of the transformer; sets the output constant voltage point by setting an FB resistor.
In order to achieve the ultimate simplification of system cost, TC3776 series has a built-in startup circuit, no external startup resistor is required, built-in FB down-bias resistor, fixed peak current to achieve the elimination of current limiting resistor; TC3776 series in order to optimize the consistency of output current, built-in input line voltage Compensation function: In order to save peripheral wires, the TC3776 series adopts a fixed output cable compensation method for output voltage compensation.
The TC3776 series integrates a variety of protection functions, including VCC clamp/undervoltage protection, output short-circuit protection, and over-temperature protection.

 

main feature

Integrated BJT, suitable for isolation solutions of 5W and below
Self-powered to optimize system cost
Standby power consumption 75mW
Built-in FB down-bias resistor
Built-in high-precision fixed peak current, high precision of constant current
Output line loss compensation technology
Output short circuit protection function
VCC undervoltage protection function
Over temperature protection
Package form: SOP-7

 

Scope of application

Adapter, charger
LED drive power
Linear power supply and RCC switching power supply upgrade
Other auxiliary power

Keyword:
TC3776A
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