CS3524A datasheet(4/8 Pages) ONSEMI

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CS3524A

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ELECTRICAL CHARACTERISTICS (continued) (0°C ≤ TA ≤ +70°C, VIN = VCC = 20 V; unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Test Conditions

Current Limit Amplifier (continued)

VSENSE = VO; unless otherwise specified

Output Swing

Minimum Total Range

0.5

−

5.0

Open Loop Voltage Gain

ΔVOUT = 1.0 to 4.0 V, RL ≥ 10 MΩ

−

Delay Time (Note 4)

ΔVIN = 300 mV

−

300

−

Output Section (Each Output)

Collector Emitter Voltage

IC = 100 μA

−

Collector Leakage Current

VCE = 50 V

−

0.1

μA

Saturation

IC = 20 mA

IC = 200 mA

−

0.2

1.0

0.4

2.2

Emitter Output Voltage

IE = 50 mA

−

Rise Time (Note 4)

TA = 25°C, R = 2.0 kΩ

−

200

−

Fall Time (Note 4)

TA = 25°C, R = 2.0 kΩ

−

100

−

Comparator Delay (Note 4)

TA = 25°C, VCOMP to VOUT

−

300

−

Shutdown Delay (Note 4)

TA = 25°C, VSHUT to VOUT

−

200

−

Shutdown Threshold

TA = 25°C, RC = 2.0 kΩ

0.5

0.7

1.0

Thermal Shutdown (Note 4)

−

165

−

°C

4. These parameters are guaranteed by design but not 100% tested in production.

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 2. Error Amplifier Voltage Gain vs.

Frequency Over RF

Figure 3. Duty Cycle vs. Input Voltage

100

1 k

10 k

100 k

1 M

Frequency (Hz)

RF = ∞

RF = 1 M Ω

RF = 300 kΩ

RF = 100 kΩ

RF = 30 kΩ

VIN = 20 V

TA = 25°C

RF is impedance to ground.

Values below 30 kΩ will

begin to limit the maximum

duty−cycle.

Input Voltage VIN

VIN = 20 V

RT = 2700 Ω

TA = 25°C

CT = 10 μF

CT = 1 μF

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