L6911ETR datasheet(5/34 Pages) STMICROELECTRONICS

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L6911E

Pin settings

5/34

Pin settings

2.1

Pin connection

Figure 2.

Pin connection (top view)

2.2

Pin description

VSEN

OCSET

SS/INH

VID0

VID1

VID3

VID2

VID4

COMP

PGOOD

PHASE

UGATE

PGND

BOOT

LGATE

VCC

OVP

GND

D98IN958

Table 2. Pin description

N°

Name

Description

VSEN

Connected to the output voltage is able to manage over-voltage conditions and

the PGOOD signal.

2OCSET

A resistor connected from this pin and the upper Mos Drain sets the current

limit protection.

The internal 200

µA current generator sinks a current from the

drain through the external resistor. The Over-Current threshold is due to the

following equation:

SS/INH

The soft start time is programmed connecting an external capacitor from this

pin and GND. The internal current generator forces through the capacitor

µA.

This pin can be used to disable the device forcing a voltage lower than 0.4V

4 - 8

VID0 - 4

Voltage Identification Code pins. These input are internally pulled-up and TTL

compatible. They are used to program the output voltage as specified in

Table 6 on page 9 and to set the overvoltage and power good thresholds.

Connect to GND to program a ‘0’ while leave floating to program a ‘1’.

9COMP

This pin is connected to the error amplifier output and is used to compensate

the voltage control feedback loop.

This pin is connected to the error amplifier inverting input and is used to

compensate the voltage control feedback loop.

OCSET

DSon

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