L5986A 데이터 시트보기 (PDF) - STMicroelectronics

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L5986A

2.5 A step-down switching regulator

STMicroelectronics 

L5986 - L5986A

4

Electrical characteristics

Electrical characteristics

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

Table 4. Electrical characteristics

Symbol

Parameter

Test condition

VCC

Operating input voltage (1)

range

VCCON Turn on VCC threshold

(1)

VCCOFF Turn off VCC threshold

(1)

RDS(on) Mosfet on resistance

(1)

ILIM

Maximum limiting current

Oscillator

FSW Switching frequency

(1)

VFSW

D

FADJ

FSW pin voltage

Duty cycle

Adjustable switching

frequency

RFSW = 33 kΩ

Dynamic characteristics

VFB Feedback voltage

DC characteristics

2.9 V < VCC < 18 V (1)

IQ

IQST-BY

Quiescent current

Total stand-by quiescent

current

Duty cycle = 0,

VFB = 0.8 V

Inhibit

INH threshold voltage

INH current

Device ON level

Device OFF level

INH = 0

Soft-start

TSS Soft-start duration

FSW pin floating

FSW = 1 MHz,

RFSW = 33 kΩ

Values

Unit

Min Typ Max

2.9

18

2.9

V

2.4

140 170

mΩ

140 220

3.0 3.5 3.9

A

225 250 275

kHz

220

275

1.262

V

0

100

%

1000

kHz

0.593 0.6 0.607 V

2.4 mA

20

30

μA

0.6

V

1.9

7.5

10

μA

7.4 8.2 9.1

ms

2

5/39

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