CR6202 Просмотр технического описания (PDF) - Unspecified

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CR6202

Switching Power Supply Controller ICs

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CR6202

Switching Power Supply Controller ICs

Features

Set-in high-voltage power switch transistor of 700V and few peripheral components

With the modulation of lock pulse width, the testing is according to the pulse limit current.

With the function of output frequency reduction, the non-output power consumption can be

less than 0.25W.

Inner-built ramp and anti-feedback compensation function

The independent upper-limit current testing controller deals with over-current and over-load

of the controller real-timely.

The period emission pole is turned off and it outputs by deflected voltage, and the pressure

resistance of the power transistor is improved.

Set-in current limit resistance with temperature compensation, which makes the current limit

precise

Set-in heat protection circuit

Startup is accomplished with the magnification function of the switch power transistor, and

the power consumption of startup resistance is reduced more than10 times.

Few peripheral components

Low startup and operating current

VCC over-voltage automatic limit

Wide-voltage output power up to 5W, and the narrow-voltage output power up to 8W.

Pb-Free DIP-8L Package

General Description

CR6202 is a high-performance current mode flyback PWM controller for AC/DC

transformer with high performance and price ratio, which supplies continuous output power of

5W within the range of wide-voltage between 85V and 265V, the output power of peak value can

be up to 18W. The combination of optimized reasonable circuit design and bipolar facture

technology with high performance and price ratio economizes the whole cost ultimately. The

power controller can be applied to the typical flyback circuit topology so as to form a simple

AC/DC transformer. The startup circuit inside IC is designed as a particular current inhalation

way, so it can start up with the magnification function of the power switch transistor itself, which

lessens the power consumption for starting the resistance remarkably; when the output power is

lower, IC will reduce the working frequency automatically, therefore, the standby power

consumption becomes extremely low. When the power transistor is closed, the interior circuit will

Aug.2008 V2.0

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