2

UCC1807-1/-2/-3

UCC2807-1/-2/-3

UCC3807-1/-2/-3

DIL-8, SOIC-8, TSSOP-8 (Top View)

J, N, D or PW Packages

ABSOLUTE MAXIMUM RATINGS

Supply Current ................................. 30mA

OUT Current ....................................±1A

Analog Inputs (FB, CS) ............. –0.3V to (VDD + 0.3V)

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

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

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

All currents are positive into, negative out of the specified ter-

minal. Consult Packaging Section of Databook for thermal limi-

tations and considerations of packages.

CONNECTION DIAGRAMS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Oscillator Section Section

Frequency

175

202

228

kHz

Temperature Stability

(Note 5)

2.5

%

Amplitude

(Note 1)

1/3VDD

V

Error Amplifier Section

Input Voltage

COMP = 2.0V

1.95

2.00

2.05

V

Input Bias Current

–1

1

m A

Open Loop Voltage Gain

60

80

dB

COMP Sink Current

FB = 2.2V, COMP = 1.0V

0.3

2.5

mA

COMP Source Current

FB = 1.3V, COMP = 4.0V

–0.2

–0.5

mA

PWM Section

Maximum Duty Cycle

75

78

81

%

Minimum Duty Cycle

COMP = 0V

0

%

Current Sense Section

Gain

(Note 2)

1.1

1.65

1.8

V/V

Maximum Input Signal

COMP = 5.0V (Note 3)

0.9

1.0

1.1

V

Input Bias Current

–200

200

nA

CS Blank Time

50

100

150

ns

Overcurrent Threshold

1.4

1.5

1.6

V

COMP to CS Offset

CS = 0V

0.55

1.1

1.65

V

Output Section

OUT Low Level

I = 100mA

0.4

1

V

OUT High Level

I = –100mA, VDD - OUT

0.4

1

V

Rise/Fall Time

CL = 1nF (Note 5)

20

100

ns

Undervoltage Lockout Section

UCC

807

–

UVLO Threshold

Package

Temperature Range

ORDERING INFORMATION