L99DZ81EP Datasheet, PDF (1/4 Pages) STMicroelectronics – Door actuator driver

L99DZ81EP
Features
■ One full bridge for 6 A load (R_ON = 150 mΩ)
■ One half bridge for 3 A load (R_ON = 300 mΩ)
■ One configurable highside driver for up to 1.5 A
(R_ON = 500 mΩ) or 0.4 A (R_ON = 1600 mΩ)
load
■ One configurable high-side driver for 0.8 A
(R_ON = 800 mΩ) or 0.4 A (R_ON = 1600 mΩ)
load
■ Two high-side drivers for 0.5 A load
(R_ON = 1600 mΩ)
■ Programmable softstart function to drive loads
with higher inrush currents as current limitation
value
■ Very low V_S current consumption in standby
mode (I_S < 6 µA typ. T_j ≤ 85°C)
■ Current monitor output for all high-side drivers
■ Central two-stage charge pump
■ Motor bridge driver with full R_dson down to 6 V
■ Device contains temperature warning and
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
Door actuator driver
Data brief
*$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
Tray
L99DZ81EP
Order codes
Tape and reel
L99DZ81EPTR
November 2011
Doc ID 022498 Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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