UCC2891, UCC2892

UCC2893, UCC2894

SLUS542F − OCTOBER 2003 − REVISED JULY 2009

2

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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range unless otherwise noted(1)

UNIT

Line input voltage, VIN

120

V

Supply voltage, VDD

(IDD < 10 mA)

16.5

V

Analog inputs

FB, CS, SYNC, LINEOV, LINEUV

−0.3 to (VREF + 0.3)

not to exceed 6

V

Output source current (peak), IO_SOURCE

OUT, AUX

2.5

A

Output sink current (peak), IO_SINK

OUT, AUX

−2.5

A

Operating junction temperature range, TJ

−55 to 150

°C

Storage temperature, Tstg

−65 to 150

°C

ESD rating

Human body model, (HBM)

2000

V

ESD rating

Change device model (CDM)

500

V

Lead temperature, Tsol, 1,6 mm (1/16 inch) from case for 10 seconds

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. All voltages are with respect to

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

RECOMMENDED OPERATING CONDITIONS

MIN

NOM

MAX

UNIT

Line input voltage, VIN

18

110

V

Supply voltage, VDD

8.5

12.0

16.0

V

Supply bypass capacitance

1

µF

Timing resistance, RON = ROFF (for 250-kHz

operation)

75

k

Ω

Operating junction temperature, TJ

−40

105

°C

Reference bypass capacitance, CREF

0.1

1

µF

ORDERING INFORMATION

PART NUMBERS

TA

APPLICATION

AUX

OUTPUT

POLARITY

CS

THRESHOLD

(INCLUDES

SLOPE COM-

PENSATION)

110-V START-UP

CIRCUIT

SOIC−16

(D)

TSSOP−16

(PW)

DC−DC

P-Channel

0.75 V

Yes

UCC2891D

UCC2891PW

−40

°C to 125°C

DC-DC/Sec. Side

P-Channel

1.27 V

No

UCC2892D

UCC2892PW

−40

°C to 125°C

DC−DC

N-Channel

0.75 V

Yes

UCC2893D

UCC2893PW

Off−Line

N-Channel

1.27 V

No

UCC2894D

UCC2894PW

† The D and PW packages are available taped and reeled. Add R suffix to device type (e.g. UCC2891DR) to order quantities of 2,500

devices per reel (for the D package) and 2,000 devices per reel (for the PW package). Bulk quantities are 40 units per tube (for the D

package) and 90 units per tube (for the PW package).