L5973AD datasheet(6/21 Pages) STMICROELECTRONICS

Part #	L5973AD

Description	2 A switch step down switching regulator

PDF	21 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Electrical characteristics

L5973AD

6/21

Transconductance

Icomp = -0.1 mA to

0.1mA

VCOMP = 1.9 V

2.3

Sync function

High input voltage

VCC = 4.4 V to 36 V

2.5

VREF

Low input voltage

VCC = 4.4 V to 36 V

0.74

Slave sink current

Vsync = 0.74 V

(1)

Vsync = 2.33 V

0.11

0.21

0.25

0.45

Master output

amplitude

Isource = 3 mA

2.75

Output pulse width

no load, Vsync = 1.65 V

0.20

0.35

µs

Reference section

Reference voltage

3.234

3.3

3.366

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 to 5 mA

Short circuit current

Guaranteed by design.

Table 4. Electrical characteristics (continued)

( TJ = 25 °C, VCC = 12 V, unless otherwise specified)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

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