UCC2913

UCC3913

SLUS274A – JANUARY 1999 – REVISED APRIL 2003

3

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ELECTRICAL CHARACTERISTICS

TA = –40°C to 85°C for UCC2913, TA = 0°C to 70°C for UCC3913, TJ = TA, IVDD = 2 mA, CT = 4.7 pF, TA = TJ (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT SUPPLY

Minimum input current, VDD

1

2

mA

Regulator voltage

2 mA

≤ ISOURCE ≤ 10 mA

8.5

9.5

10.5

V

Undervoltage lockout off-voltage

6

7

8

V

FAULT TIMING

Overcurrent threshold voltage

TJ = 25 °C

47.5

50.0

53.0

mV

Overcurrent threshold voltage

Over temperature

46.0

50.0

53.5

mV

Overcurrent input bias

50

500

nA

VCT = 1.0 V,

IPL = 0 A

–22

–36

–50

µA

Timing capacitance charge current

Overload condition,

VSENSE – VIMAX = 300 mV

–0.7

–1.2

–1.7

mA

Timing capacitance discharge current

VCT = 1.0 V,

IPL = 0 A

0.6

1.0

1.5

µA

Timing capacitance fault threshold voltage

2.2

2.4

2.6

V

Timing capacitance reset threshold voltage

0.32

0.50

0.62

V

Output duty cycle

Fault condition,

IPL = 0 A

1.7%

2.7%

3.7%

OUTPUT

High le el o tp t oltage

IOUT = 0 A

8.5

10

High-level output voltage

IOUT = –1 A

6

8

Low level output voltage

IOUT = 0 A,

VSENSE – VIMAX = 100mV

0.01

V

Low-level output voltage

IOUT = 2 A,

VSENSE – VIMAX = 100mV

0.2

0.6

LINEAR AMPLIFIER

Sense control voltage

VIMAX = 100 mV

85

100

115

mV

Sense control voltage

VIMAX = 400 mV

370

400

430

mV

Input bias

50

500

nA

SHUTDOWN/FAULT

Shutdown threshold voltage

1.4

1.7

2.0

V

Input current

VSD/FLT = 5 V

15

25

45

µA

High-level output voltage

6.0

7.5

9.0

V

Low-level output voltage

0.01

V

Delay-to-output time

150

300

ns

POWER LIMITING

PL regulator voltage

IPL = 64 µA

4.35

4.85

5.35

V

Duty cycle control

IPL = 64 µA

0.6%

1.2%

1.7%

Duty cycle control

IPL = 1 mA

0.045%

0.1%

0.17%

OVERLOAD

Delay-to-output time

300

500

ns

Output sink current

VSENSE – VIMAX = 300mV

40

100

mA

Overload threshold voltage

Relataive to IIMAX

140

200

260

mV