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LM76002, LM76003

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SNVSAK0 – OCTOBER 2017

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Electrical Characteristics (continued)

Minimum and maximum limits are specified through test, design or statistical correlation. Typical values represent the most

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(2)

This current limit was measured as the internal comparator trip point. Due to inherent delays in the current limit comparator and drivers,

the peak current limit measured in closed loop with faster slew rate will be larger, and valley current limit will be lower.

(3)

Measured at pins.

(4)

Ensured by design.

CURRENT LIMITS AND HICCUP

(2)

Short-circuit, high-side

current limit

LM76002

3.2

4.2

5.3

A

LM76003

4.35

5.5

6.8

(2)

Low-side current limit

LM76002

2.3

3.2

4.2

A

LM76003

3.4

4.2

5.3

Negative current limit

LM76002

–2.5

A

LM76003

–3.3

Hiccup threshold on FB pin

0.38

0.42

0.46

V

Zero cross-current limit

0.05

A

SOFT START (SS/TRK PIN)

Soft-start charge current

1.8

2

2.2

µA

Soft-start discharge

resistance

UVLO, TSD, OCP; or EN = 0 V

2

kΩ

POWER GOOD (PGOOD PIN) and OVERVOLTAGE PROTECTION

Power-good overvoltage

threshold

% of FB voltage

106%

110%

113%

Power-good undervoltage

threshold

% of FB voltage

86%

90%

93%

Power-good hysteresis

% of FB voltage

2.5%

Minimum input voltage for

proper PGOOD function

1.3

2

V

Power-good on-resistance

40

100

Ω

30

90

MOSFETS

(3)

High-side MOSFET on-

resistance

95

150

m

Ω

(3)

Low-side MOSFET on-

resistance

45

85

m

Ω

THERMAL SHUTDOWN

(4)

Thermal shutdown threshold

Shutdown threshold

160

°C

Recovery threshold

135

°C