CR6202 Просмотр технического описания (PDF) - Unspecified

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CR6202

Switching Power Supply Controller ICs

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CR6202

Close Voltage of Oscillator: VCC value that makes RC oscillator stop oscillating when the above VCC

oscillates the falling edge.

Quiescent Current: VCC power current when FB is grounded with 1.0Kohm of resistance at normal phase.

Pull-up/pull-down Current of the Oscillator: at normal phase, FB is 2.5V, CT is 1.25V, and CT is in

pull-up/pull-down current.

FB Pull-up Current: Pull-up current on FB at normal phase when FB is 2.5V, IS is 0V.

FB Upper Limit Current Prevention: The pull-down current on FB at normal phase when FB is 6V, IS is

0.3V.

Internal Feedback Power Voltage: VCC value of CR6202 power supply of the circuit without peripheral

standby at normal phase

OC Upper Limit Voltage: the minimum OC current of pull-down current on FB when FB is 6V

Ramp current drive: it refers to the power tube base drive OB on-current is the function of IS, when IS is

0V, on-current OB is about 24mA, then on-current OB will increase linearly with IS, when IS is increased

to 0.6V, on-current OE is about 40mA.

Fig.1 OPEN/CLOSED CYCLE WAVES IN NORMAL OPERATION

Fig.2 OVERALL SIGNAL WAVEFORMS OF CR6202

Aug.2008 V2.0

7/14

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