L5988 데이터 시트보기 (PDF) - STMicroelectronics

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L5988

4A step-down switching regulator with synchronous rectification

STMicroelectronics 

L5988

3 Maximum ratings

Table 2. Absolute maximum ratings

Symbol

Parameter

VCC

Input voltage

VOUT

Output DC voltage

S/O/U, SS/INH, FB, COMP,

SYNCH, Fsw, ILIM-ADJ

Analog pins

PTOT

Power dissipation at TA = 60°C

TJ

Junction temperature range

Tstorage

Storage temperature range

Maximum ratings

Value

Unit

20

V

-0.3 to 20

V

-0.3 to 4

V

W

-40 to 150

°C

-55 to 150

°C

4 Electrical characteristics

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

Table 3. Electrical characteristics

Symbol

Parameter

Test condition

VCC

Rdson_hs

Rdson_ls

II peak

II valley

Iqst-by

Operating input voltage range

VO = 0.6V

On resistance high-side MOSFET

On resistance low-side MOSFET

Current limit

Current limit

Total shutdown quiescent current

ILIM-ADJ = float

R = 270KΩ to GND

R = 47KΩ to VREF

ILIM-ADJ = float

R = 270KΩ to GND

R = 47KΩ to VREF

SS to GND

Power-ON

3.3V BUS

12V BUS

Turn-On VCC threshold

Turn-Off VCC threshold

Turn-On VCC threshold

Turn-Off VCC threshold

Min Typ Max Unit

2.9

18

V

75

mΩ

60

mΩ

4

A

5

A

1.3

A

4.6

A

5.6

A

1.8

A

35

µA

2.8

V

2.6

V

8

V

7

V

5/10

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