CM3842CS datasheet(4/12 Pages) ETC

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CM3842/3843

CURRENT MODE PWM CONTROLLER

2001/06/27

Advanced

Champion Microelectronic Corporation

Page 3

ABSOLUTE MAXIMUM RATINGS

Supply voltage, VCC

35V

Output current, IO

± 1A

Analog inputs, VI

-0.3V to 6.3V

Error amp output sink current, ISINK(EA)

10mA

Power dissipation (TA = 25

OC), PD

Maximum junction temperature TJ

150

Storage temperature range

-65

OC to 150OC

Lead temperature (soldiering, 10 seconds)

260

Note 5:

Exceeding these ratings could cause damage to the device.

All voltages are with respect to Ground.

Currents are positive into, negative out of the specified terminal.

THERMAL DATA

PDIP PACKAGE:

Thermal Resistance-Junction to Ambient,

θJA

OC/W

SOIC PACKAGE:

Thermal Resistance-Junction to Ambient,

θJA

165

OC/W

Junction Temperature Calculation:

TJ = TA + (PD

× θJA).

The

JA numbers are guidelines for the thermal performance of the device/pc-board system.

All of the above assume no ambient airflow.

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