CS3524A datasheet(4/6 Pages) CHERRY

4 / 6 page

Typical Performance Characteristics continued

100

TIMING RESISTOR - RT (kΩ)

100k

10k

100

VIN = 20V

TA = 25˚C

= 1.0nf

= 3.0nf

= 10nf

= 30nf

= 100nf

1.15

RTCT

f≈

100

TIMING CAPACITOR - CT (nf)

5.0

2.0

1.0

0.5

0.2

0.1

VIN = 20V

RT = 2700Ω

TA = 25˚C

Note: Dead time = osc output pulse

width plus output delay

Output Dead Time vs. Timing Capacitor Value

Oscillator Frequency vs. Timing Components Resistor

Over Timing Capacitance

DELAY TIME (µs)

INPUT at ISENSE+

0.2

0.1

0.0

VIN 20V TA 25˚C

EA+ = VREF

ISENSE– = Gnd

OUTPUT at COMP

Overdrive

10%

20%

50%

1.0

0.5

0.0

DELAY TIME (µs)

VIN = 20V

RL = 2kΩ

TA = 25˚C

OUTPUT at

OR VO

INPUT at

SHUTDOWN

Note: Minimum input pulse width

to latch is 200ns

DELAY TIME (µs)

VIN = 20V

RL = 2kΩ

TA = 25˚C

OUTPUT at

VOA or VOB

INPUT at VOB

Note: Minimum input pulse width

to latch is 200ns

Shutdown Delay From PWM Comparator

Turn-Off Delay From Shutdown

Current Limit Amplifier Delay

010

Note: Outputs off. RT = ∞

SUPPLY VOLTAGE VIN (V)

TA = -55°C

TA = 25°C

TA = 125°C

Quiescent Supply Current vs. Supply Voltage Over

Temperature

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