L5988D 查看數據表（PDF） - STMicroelectronics

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L5988D

4A step-down switching regulator with synchronous rectification

STMicroelectronics 

Electrical characteristics

Table 3. Electrical characteristics

Symbol

Parameter

Soft start and inhibit

Iss

Soft start current

Inhibit current

Device ON level

Device OFF level

Oscillator

fS

Switching frequency

Duty cycle (1)

Voltage feedback

VFB

Output voltage

Error amplifier

VCOMP Output voltage

IFB

Io source

Bias current

Source output pin

Io sink

Sink output pin

VCM

VOFFSET

GV

Common mode voltage

Error amplifier offset

Open loop voltage gain

Reference section

VREF

Reference voltage

Line regulation

Load regulation

Short circuit current

Protections

Over voltage trip

(VFB / 0.6V int. ref.)

1. Guaranteed by design

L5988

Test condition

SS = 2V

SS = 0V

FSW = open

2.9V < VCC < 18V

VSS = 3V

VFB = 0V to 2.5V

Vref = 0.6V

Iref = 0 to 5mA

VCC = 2.9 to 18V

Iref = 0 mA

VCC = 2.9 to 18V

Iref = 0 to 5mA

Min Typ Max Unit

18

5

0.8

µA

µA

V

0.3 V

400

KHz

0

100 %

0.6

V

0

3

V

0.290

µA

25

mA

40

mA

0

2.3

V

-5

+5 mV

100

dB

1.8

V

6

mV

7.5

mV

12

mA

VFB Rising

20

%

6/10

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