UCC2884 datasheet(2/8 Pages) TI

2 / 8 page

UCC1884

UCC2884

UCC3884

ELECTRICAL CHARACTERISTICS: Unless otherwise specified, these specifications apply for TA = –55°C to 125°C for the

UCC1884, –40°C to 85°C for the UCC2884, and 0°C to 70°C for the UCC3884, CT = 220pF, RON = 53k, ROFF = 38k, VOUT =

VREF, VVS = 0V, CSS = 2.5nF, VDD = 11V, Output no load, TA =TJ.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

5V Reference Section

VREF

IREF = 0mA

4.86

5.14

Line Regulation

VDD = 10V to 12V

Load Regulation

0 < IREF < 5mA

Short Circuit I

VREF = 0V

Oscillator Section

Accuracy

VOUT =VREF

360

400

440

kHz

Foldback Frequency

VOUT = 0.75V

200

230

260

kHz

CLKSYNC Output High

4.8

5.2

CLKSYNC Output Low

0.0

0.4

CLKSYNC Sink Current

CLKSYNC = 1V

1.2

2.2

CLKSYNC Source Current

CLKSYNC = 3V

–0.2

–0.1

CLKSYNC Input Threshold

CLKSYNC from 5V to 0V (Edge Detect)

2.5

3.0

3.5

Error Amplifier Section

Total Bias Current; Regulating Level

–1

µA

FB Voltage

FB = COMP

2.43

2.5

2.57

AVO

GBW

F = 100kHz (Note 1)

2.5

MHz

Output Source Current

FB = 2.3V, COMP = 2.5V

–0.6

–1.2

Output Sink Current

FB = 2.7V, VCOMP = 1V

0.250

1.5

VOL

IO = 100µA

0.3

0.9

VOH

IO = –100µA

2.7

3.1

3.5

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

Output Sink Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A

Output Source Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A

All Other Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V

Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C

Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C

Currents are positive into, negative out of the specified termi-

nal. Consult Packaging Section of Databook for thermal limita-

tions and considerations of packages.

CONNECTION DIAGRAMS

PLCC-20 (Top View)

Q Package

DIL-16, SOIC-16 (Top View)

J, N or D Packages

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