L6788A datasheet(12/18 Pages) STMICROELECTRONICS

12 / 18 page

Electrical specifications

L6788A

12/18

Doc ID 15341 Rev 2

Reference and DAC

VOUT

Output voltage accuracy

VOUT > 0.800 V; RIREF=12.4 kΩ

-2

IRX

RX source current

RIREF = 12.4 kΩ resistor to AGND.

100

μA

VIREF

IREF pin voltage

RIREF = 12.4 kΩ resistor to AGND.

1.240

5VCC

Accuracy

I5VCC = 2 mA to 20 mA; C = 1 µF

to PGND.

-2.5

2.5

Maximum output current

C = 1 µF to PGND.

VID

VID threshold; PVID mode

Input low

0.7

Input high

1.3

Pull-down current

VIDx to 3.3 V

μA

Protections

OCPAVG

Over current threshold

on total output current

IOUT/OCP rising

1.700

IOCTH

Over current threshold

for each phase

ICSX- rising;

RIREF = 12.4 kΩ resistor to AGND.

μA

OVP

Over voltage threshold

VSEN rising;

% programmed reference voltage

140

UVP

Under voltage threshold

VSEN falling;

% programmed reference voltage

Thermal monitor

VTCS

OT warning

TCS rising

1.500

OT shut down

TCS rising

2.500

Soft-start end indicator

VPOK

POK low voltage

I = -4 mA

0.4

Error amplifier

100

GBWP

Gain bandwidth product

MHz

Slew rate

COMP = 10 pF to AGND

μs

Gate drivers

IUGATEx

High side source current

BOOTx-PHASEx = 12 V;

CUGATEx to PHASEx = 3.3 nF

1.5

RUGATEx

High side sink resistance

BOOTx-PHASEx = 12 V;

ILGATEx

Low side source current

VCC1_IC=VCC2_DR = 12 V;

CLGATEx to PGND = 5.6 nF

RLGATEx

Low side sink resistance

VCC1_IC = VCC2_DR = 12 V;

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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