LM76003RNPR datasheet(9/53 Pages) TI1

Part #	LM76003RNPR

Description	3.5-V to 60-V, 2.5-A/3.5-A Synchronous Step-Down Voltage Regulator

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Manufacturer	TI1 [Texas Instruments]

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LM76002, LM76003

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6.8 System Characteristics

The following specifications apply to the circuit found in the typical Simplified Schematic with appropriate modifications (see

Table 2). These parameters are not tested in production and represent typical performance only. Unless otherwise stated the

following conditions apply: TA = 25°C, VIN = 24 V, VOUT = 3.3 V, fSW = 500 kHz.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VFB_PFM

Output voltage offset at no load

in auto mode

VIN = 3.8 V to 36 V, VSYNC = 0 V, auto mode

IOUT = 0 A

2%

Vdrop

Minimum input to output

voltage differential to maintain

specified accuracy

VOUT = 5 V, IOUT = 1.5 A, fSW = 2.2 MHz

0.4

V

IQ_SW

Operating quiescent current

(switching)

VEN = 3.3 V, IOUT = 0 A, RT = open, VBIAS =

VOUT = 3.3 V, RFBT = 1 Meg

15

µA

IPEAK_MIN

Minimum inductor peak current

LM76002:

VSYNC = 0 V, IOUT = 10 mA

0.5

A

LM76003:

VSYNC = 0 V, IOUT = 10 mA

0.7

IBIAS_SW

Operating quiescent current

from external VBIAS (switching)

fSW = 500 kHz, IOUT = 1 A

7

mA

fSW = 2.2 MHz, IOUT = 1 A

25

DMAX

Maximum switch duty cycle

While in frequency foldback

97.5%

tDEAD

Dead time between high-side

and low-side MOSFETs

4

ns

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