ST L99DZ81EP User Manual

Features

L99DZ81EP

Door actuator driver

Data brief

■ One full bridge for 6 A load (R

■ One half bridge for 3 A load (R

■ One configurable highside driver for up to 1.5 A

(R

= 500 mΩ) or 0.4 A (RON= 1600 mΩ)

ON

= 150 mΩ)

ON

=300mΩ)

ON

load

■ One configurable high-side driver for 0.8 A

(R

= 800 mΩ) or 0.4 A (RON= 1600 mΩ)

ON

load

■ Two high-side drivers for 0.5 A load

(R

= 1600 mΩ)

ON

■ Programmable softstart function to drive loads

with higher inrush currents as current limitation
value

■ Very low V

mode (I

■ Current monitor output for all high-side drivers

■ Central two-stage charge pump

■ Motor bridge driver with full R

■ Device contains temperature warning and

current consumption in standby

S

< 6 µA typ. Tj≤ 85°C)

S

down to 6 V

dson

protection

■ Open-load detection for all outputs

■ Overcurrent protection for all outputs

■ Separated half bridges for door lock motor

■ Programmable PWM control of all outputs

■ STM standard serial peripheral interface (ST-

SPI 3.0)

■ Prepared for additional fail-safe path for

H-Bridge

*$3*&)7

TQFP-64

Applications

■ Door Actuator Driver with 3 bridges for Double

Door Lock Control, 4 high-side drivers for bulb
and LED control.

■ Motor bridge driver to control four external

power transistors in H-Bridge configuration

Description

The L99DZ81EP is a microcontroller driven
multifunctional door actuator driver for automotive
applications. Up to two DC motors and four
grounded resistive loads can be driven with three
half bridges and four high-side drivers.

Four external MOS transistors in bridge
configuration can be driven. The integrated SPI
controls all operating modes (forward, reverse,
brake and high impedance). Also all diagnostic
information is available via SPI read.

Table 1. Device summary

Package

TQFP-64 L99DZ81EP L99DZ81EPTR

November 2011 Doc ID 022498 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

Order codes

Tray Tape and re el

www.st.com

1

Package information L99DZ81EP

1 Package information

1.1 ECOPACK

In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com

ECOPACK

®

packages, depending on their level of environmental compliance. ECOPACK®

®

is an ST trademark.

®

.

2/4 Doc ID 022498 Rev 1