L5988D datasheet(10/52 Pages) STMICROELECTRONICS

10 / 52 page

Electrical characteristics

L5988D

10/52

DocID15324 Rev 4

IO SOURCE Source output current

VFB = 0.2 V

(2)

IO SRCE LIM Source current limitation

VFB = 0.2 V, VCOMP = 3 V

IO SINK

Sink output current

VFB = 1.0 V, VCOMP = 0.5 V

AV0

DC open loop gain

(2)

100

Sync function

High input voltage

2.9

4.0

Low input voltage

0.74

Slave sink current

VSYNC = 3.3 V; FSW = float

Master output amplitude

ISOURCE = 5 mA

2.9

Output pulse width

SYNCH = floating

100

Input pulse width

Reference section

VREF

Reference voltage

Vcc = 2.9 V to 18 V

1.756

1.8

1.837

(1)

1.754

1.8

1.852

Line regulation

Vcc = 2.9 V to 18 V

IREF = 0 mA

612

Load regulation

IREF = 0 to 5 mA

7.5

Short circuit current

Protections

VFB_OVP

Overvoltage trip

(VFB_OVP - VFB) / VFB

VFB rising

VFB

Bus thresholds

TH1

– UVLO 3.3 V bus

– OVP not latched

– No sink

(3)

00.2

TH2

– UVLO 3.3 V bus

– OVP not latched

–Sink

(3)

0.26

0.425

TH3

– UVLO 3.3 V bus

– OVP latched

– No sink

(3)

0.48

0.65

TH4

– UVLO 3.3 V bus

– OVP latched

–Sink

(3)

0.71

0.875

TH5

– UVLO 12 V bus

– OVP not latched

– No sink

(3)

0.93

1.085

Table 5. Electrical characteristic (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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