L6738 datasheet(11/32 Pages) STMICROELECTRONICS

No. de pieza	L6738

Descripción Electrónicos	Single-phase PWM controller with light-load efficiency optimization

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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L6738

Electrical specifications

Doc ID 18133 Rev 1

11/32

3

Electrical specifications

3.1

Absolute maximum ratings

3.2

Electrical characteristics

(VCC = 5 V to 12 V; Tj = 0

° to 70° C unless otherwise specified).

Table 4.

Absolute maximum ratings

Symbol

Parameter

Value

Unit

VCC,VCCDR

to GND

-0.3 to 15

V

VBOOT, VUGATE

to GND

to PHASE

to GND, VCCDR = 12 V, t < 200nsec.

-0.3 to 41

15

45

V

VPHASE

to GND

to GND, VCCDR = 12 V, t < 200nsec.

-5 to 26

-8 to 30

V

VLGATE

to GND

-0.3 to VCCDR + 0.3

V

SYNCH

to GND, VCC < 7 V

to GND, VCC > 7 V

-0.3 to VCC + 0.3

-0.3 to 7

V

CSP, CSN

to GND(1)

1.

Current sense network needs to be properly bias and loop closed.

-0.3 to VCC - 1.5

V

All other pins to GND

-0.3 to 3.6

V

Table 5.

Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Supply current and power-on

ICC

VCC supply current

9mA

EN = GND

8

mA

ICCDR

VCCDR supply current

UGATE and LGATE = Open

2.6

5

mA

EN = GND

UGATE and LGATE = Open

0.3

3.8

mA

UVLOVCC,

UVLOVCCDR

Turn-ON threshold

VCC, VCCDR rising

4.1

V

Hysteresis

0.2

V

Oscillator, synchronization and soft-start

FSW

Main oscillator accuracy

OSC = Open

180

200

220

kHz

kOSC

Oscillator gain

Current sink/source from OSC

10

kHz/

µA

DIS

Disable threshold

OSC Falling

0.5

V

Tss

Soft-start time

OSC = Open

4.5

5.12

5.7

msec

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