HTSSOP16 Просмотр технического описания (PDF) - STMicroelectronics

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HTSSOP16

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

STMicroelectronics 

Electrical characteristics

L5988D

Table 5. Electrical characteristic (continued)

Symbol

Parameter

Test condition

IO SOURCE

IO SRCE LIM

IO SINK

AV0

Source output current

Source current limitation

Sink output current

DC open loop gain

VFB = 0.2 V

(2)

VFB = 0.2 V, VCOMP = 3 V

VFB = 1.0 V, VCOMP = 0.5 V

(2)

Sync function

Min.

Typ.

25

2

30

100

Max. Unit

mA

mA

mA

dB

High input voltage

Low input voltage

Slave sink current

Master output amplitude

Output pulse width

Input pulse width

VSYNC = 3.3 V; FSW = float

ISOURCE = 5 mA

SYNCH = floating

2.9

4.0 V

0.74 V

1

mA

2.9

V

100

ns

70

ns

Reference section

VREF Reference voltage

Line regulation

Load regulation

Short circuit current

Vcc = 2.9 V to 18 V

Vcc = 2.9 V to 18 V

IREF = 0 mA

IREF = 0 to 5 mA

1.756 1.8 1.837 V

(1) 1.754 1.8 1.852 V

6

12 mV

7.5 15 mV

12 18 24 mA

Protections

VFB_OVP

Overvoltage trip

(VFB_OVP - VFB) / VFB

Bus thresholds

VFB rising

15

20

24

%

VFB

– UVLO 3.3 V bus

TH1 – OVP not latched

– No sink

– UVLO 3.3 V bus

TH2 – OVP not latched

– Sink

– UVLO 3.3 V bus

TH3 – OVP latched

– No sink

– UVLO 3.3 V bus

TH4 – OVP latched

– Sink

– UVLO 12 V bus

TH5 – OVP not latched

– No sink

(3)

0

(3) 0.26

(3) 0.48

(3) 0.71

(3) 0.93

0.2 V

0.425 V

0.65 V

0.875 V

1.085 V

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DocID15324 Rev 4

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