L6788ATR datasheet(11/18 Pages) STMICROELECTRONICS

부품명	L6788ATR

상세설명	High current internal drivers

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11 / 18 page

L6788A

Electrical specifications

Doc ID 15341 Rev 2

11/18

4

Electrical specifications

4.1

Electrical characteristics

VCC = 12 V ± 15%, TJ = 25 °C unless otherwise specified.

Table 5.

Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Supply voltages operating conditions

VCC1_IC

Device supply voltage

10.8

12

13.2

V

VCC2_DR

LS driver supply voltage

10.8

12

13.2

V

Vsuorces

(VIN)

Conversion input voltage

Vsource1 = Vsource2

10.8

13.2

V

Vsource1-

Vsource2

BOOTx supply current

Max difference between conversion

input voltages (static condition)

2.4

V

Supply current and power-on

ICC1_IC

VCC1_IC supply current

UGATEx and LGATEx OPEN;

VCC1_IC=VCC2_DR=VBOOTx=12 V

25

mA

ICC2_DR

VCC2_DR supply current

LGATEx = OPEN;

VCC1_IC=VCC2_DR= 12 V

6mA

IBOOTx

BOOTx supply current

UGATEx = OPEN; PHASEx to PGND;

VCC1_IC=VCC2_DR=BOOTx=12 V

2mA

UVLOVCC_IC

VCC1_IC turn-ON threshold

VCC1_IC rising;

VCC2_DR = VCC1_IC

7V

VCC1_IC turn-OFF

threshold

VCC1_IC falling;

VCC2_DR = VCC1_IC

5.8

V

UVLO5VCC

5VCC turn-ON threshold

5 VCC rising; VCC1_IC=VCC2_DR>7

3

V

5VCC turn-OFF threshold

5 VCC falling; VCC1_IC=VCC2_DR>7

1

V

Oscillator, soft start time and inhibit

FOSC

Default value

RT = OPEN

200

kHz

Programmability range

RT connected to AGND

200

800

kHz

Trp

Soft start time

VCC1_IC = 12 V; 5VCC = 5 V;

VOUT=1.350 V; EN rising.

35

ms

VR_HOT/EN

ENABLE threshold

Input low

0.7

V

Input high

1.3

V

Pull-Up current

VR_HOT/EN to AGND

10

μA

Voltage at VR_HOT/EN pin

during normal operation

IVR_HOT_EN = 50 μA to 150 μA;

(current sunk by VR_HOT/EN)

1.5

V

ΔVosc

Ramp amplitude

1.5

V

FAULT

Voltage at pin RT pin

OVP, UVP and OCP avg and thermal

shutdown active

3.3

V

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