STATUS

DRIVERB

DRIVERA

700

A

m

4K

V

IN

MODULATOR

4K

700

A

m

V

IN

CT

EXTCLK

RT

OSCILLATOR

3K

5K

10K

BIAS

BIAS

BIAS

X2

X1

1K

150mV

150mV

STATUS

AMPLIFIERS

ERROR

AMPLIFIER

V

IN

V

IN

2K

V

IN

150

A

m

1.25V

2.5K

500

1.5-VOLTREFERENCE

GND

VREF

COMP

INV

NI

UC2901-EP

SLUS709A – DECEMBER 2006 – REVISED MARCH 2010

www.ti.com

UC2901 SIMPLIFIED SCHEMATIC

Absolute Maximum Ratings

(1)

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Input supply voltage

40

V

Reference output current

–10

mA

Driver output current

–35

mA

Status indicator voltage

40

V

Status indicator current

20

mA

External clock input

40

V

Error amplifier inputs

–0.5

35

V

1000

mW

Operating junction temperature range

–55

150

°C

–65

150

°C

Lead temperature (soldering, 10 seconds)

300

°C

(1)

Voltages are referenced to ground, pin 7. Currents are positive into, and negative out of the specified terminal.

(2)

Long-term high-temperature storage and/or extended use at maximum recommended operating conditions may result in a reduction of

overall device life. See http://www.ti.com/ep_quality for additional information on enhanced plastic packaging.

2

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