L5987A(2008) データシートの表示（PDF） - STMicroelectronics

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L5987A
(Rev.:2008)

3 A step-down switching regulator

STMicroelectronics 

L5987 - L5987A

Electrical characteristics

Table 4. Electrical characteristics (continued)

Symbol

Parameter

Test condition

Values

Unit

Min Typ Max

Error amplifier

VCH High level output voltage

VCL Low level output voltage

IFB

Bias source current

IO SOURCE Source COMP pin

IO SINK

GV

Sink COMP pin

Open loop voltage gain

VFB < 0.6 V

VFB > 0.6 V

VFB = 0 V to 0.8 V

VFB = 0.5 V,

VCOMP = 1 V

VFB = 0.7 V,

VCOMP = 1 V

(2)

Synchronization function

3

V

0.1

1

μA

17

mA

25

mA

100

dB

High input voltage

Low input voltage

Slave sink current

Master output amplitude

Output pulse width

VSYNCH = 2.9 V

ISOURCE = 200 μA

SYNCH floating

Input pulse width

2

3.3

V

1

0.7 0.9 mA

3.0

V

110

ns

70

Protection

IFBDISC

TSHDN

FB disconnection source

current

Thermal shutdown

Hysteresis

1

μA

150

°C

30

1. Specification referred to TJ from -40 to +125 °C. Specification in the -40 to +125 °C temperature range are

assured by design, characterization and statistical correlation.

2. Guaranteed by design.

7/42

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