LM60430 datasheet(8/38 Pages) TI

8 / 38 page

LM60440, LM60430

SNVSBN5A – FEBRUARY 2020 – REVISED JUNE 2020

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(1)

Deviation is with respect to VIN =12 V, IOUT = 1 A.

(2)

In dropout the switching frequency drops to increase the effective duty cycle. The lowest frequency is clamped at approximately: ƒMIN =

1 / (tON-MAX + tOFF-MIN). DMAX = tON-MAX /(tON-MAX + tOFF-MIN).

7.7 System Characteristics

The following specifications apply to a typical applications circuit, with nominal component values. Specifications in the typical

(TYP) column apply to TJ = 25°C only. Specifications in the minimum (MIN) and maximum (MAX) columns apply to the case

of typical components over the temperature range of TJ = –40°C to 150°C. These specifications are not ensured by

production testing.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Operating input voltage range

VOUT = 3.3 V, IOUT= 0 A

3.8

VOUT

Output voltage regulation for VOUT = 5

V(1)

VOUT = 5 V, VIN = 7 V to 36 V, IOUT = 0 A to 4

–1.6%

2.5%

VOUT = 5 V, VIN = 7 V to 36 V, IOUT = 1 A to 4

–1.6%

1.5%

Output voltage regulation for VOUT = 3.3

V(1)

VOUT = 3.3 V, VIN = 3.8 V to 36 V, IOUT = 0 A

to 4 A

–1.6%

2.5%

VOUT = 3.3 V, VIN = 3.8 V to 36 V, IOUT = 1 A to

4 A

–1.6%

1.5%

ISUPPLY

Input supply current when in regulation

VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A,

RFBT = 1 MΩ

µA

VDROP

Dropout voltage; (VIN – VOUT)

VOUT = 5 V, IOUT = 1A

Dropout at –1% of regulation,

ƒSW = 140 kHz

150

DMAX

Maximum switch duty cycle(2)

VIN = VOUT = 12 V, IOUT = 1 A

98%

VHC

FB pin voltage required to trip short-circuit

hiccup mode

0.4

tHC

Time between current-limit hiccup burst

Switch voltage dead time

TSD

Thermal shutdown temperature

Shutdown temperature

165

°C

Recovery temperature

148

°C

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