B5973D datasheet(6/12 Pages) STMICROELECTRONICS

Teilenummer	B5973D

Bauteilbeschribung	2 A step down switching regulator for automotive applications

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Electrical characteristics

B5973D

5/11

Transconductance

ICOMP = -0.1 mA to 0.1 mA;

VCOMP = 1.9 V

2.3

Synch function

High input voltage

VCC = 4.4 to 36 V;

2.5

VREF

Low input voltage

VCC = 4.4 to 36 V;

0.74

Slave synch current

Vsynch = 0.74 V

(2)

Vsynch = 2.33 V

0.11

0.21

0.25

0.45

Master output

amplitude

Isource = 3 mA

2.75

Output pulse width

no load, Vsynch = 1.65 V

0.20

0.35

μs

Reference section

Reference voltage

IREF = 0 to 5 mA

VCC = 4.4 V to 36 V

3.2

3.3

3.399

Line regulation

IREF = 0 mA

VCC = 4.4 V to 36 V

510

Load regulation

IREF = 0 mA

815

Short circuit current

With TJ = 85 °C, Ilim_min = 2.5 A, assured by design, characterization and statistical correlation.

Guarantee by design

Table 4.

Electrical characteristics

(TJ = -40 °C to 125 °C, VCC = 12 V, unless otherwise specified)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

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