E-L5970D datasheet(5/16 Pages) STMICROELECTRONICS

部件名	E-L5970D

功能描述	Up to 1A step down switching regulator

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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L5970D

Electrical characteristics

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3

Electrical characteristics

Table 4. Electrical characteristics

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

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

VCC

Operating input

voltage range

Vo = 1.235V; Io = 2A

(1)

4.4

36

V

RDS(on)

Mosfet on

Resistance

(1)

0.250

0.5

Ω

Il

Maximum limiting

current

VCC = 4.4V to 36V

1.5

1.87

2.25

A

fs

Switching frequency

(1)

212

250

280

KHz

225

250

275

KHz

Duty cycle

0

100

%

Dynamic characteristics (see test circuit ).

V5

Voltage feedback

4.4V < VCC < 36V,

20mA < IO < 2A

1.220

1.235

1.25

V

(1)

1.198

1.235

1.272

V

h

Efficiency

VO = 5V, VCC = 12V

90

%

DC characteristics

Iqop

Total operating

quiescent current

(1)

35

mA

Iq

Quiescent current

Duty cycle = 0;

VFB = 1.5V

2.5

mA

Iqst-by

Total stand-by

quiescent current

Vinh > 2.2V

(1)

50

100

µA

VCC = 36V;

Vinh > 2.2V

(1)

80

150

µA

Inhibit

INH threshold

voltage

Device ON

0.8

V

Device OFF

2.2

V

Error amplfier

VOH

High level output

voltage

VFB = 1V

3.5

V

VOL

Low level output

voltage

VFB = 1.5V

0.4

V

Io source

Source output

current

VCOMP = 1.9V;

VFB = 1V

200

300

µA

类似零件编号 - E-L5970D

制造商	部件名	数据表	功能描述
STMicroelectronics	E-L5973AD	489Kb / 22P	2 A switch step down switching regulator

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