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Absolute Maximum Ratings

(1) (2)

Dissipation Ratings

Recommended Operating Conditions

UCC28C4x-EP

BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLERS

SGLS352B – DECEMBER 2006 – REVISED MAY 2007

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

MIN

MAX

UNIT

VDD

20

V

Supply voltage

Max ICC

30

mA

Output current, IOUT peak

±1

A

Output energy, capacitive load

5

µJ

COMP, CS, FB

–0.3

6.3

OUT

–0.3

20

Voltage rating

V

RT/CT

–0.3

6.3

VREF

7

Error amplifier output sink current

10

mA

TJ

Operating junction temperature range(3)

–55

150

°C

Tstg

Storage temperature range

–65

150

°C

Lead temperature (soldering, 10 s)

300

°C

(1)

Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating

conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

All voltages are with respect to ground. Currents are positive into and negative out of the specified terminals.

(3)

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 about enhanced plastic packaging.

θ

ja

TA < 25°C

DERATING FACTOR

TA = 70°C

TA = 85°C

TA = 125°C

PACKAGE

(

°C/W)

POWER RATING

ABOVE TA = 25°C

POWER RATING

POWER RATING

POWER RATING

D

176

710 mW

5.68 mW/

°C

454 mW

369 mW

142 mW

MIN

MAX

UNIT

VDD

Input voltage

18

V

VOUT

Output voltage range

18

V

IOUT(1)

Average output current

200

mA

IOUT(ref)(1)

Reference output current

–20

mA

TJ(1)

Operating junction temperature

–55

150

°C

(1)

It is not recommended that the device operate under conditions beyond those specified in this table for extended periods of time.

3

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