L99MD01 Datasheet, PDF (1/54 Pages) STMicroelectronics – Internal PWM generation

L99MD01
Octal half-bridge driver with SPI control
for automotive application
Features
■ 8 half bridges
■ R_ON = typ. 0.9 Ω (HS), 0.64 Ω (LS)
@ T_j = 25 °C
■ Current limit of each output at min. 0.8 A
■ Intrinsic DC/DC step up converter driving an
external MOSFET
■ PWM mode option for all half bridges for hold
current
■ Internal PWM generation
■ Two current monitor outputs
■ SPI interface for data communication
■ Temperature warning
■ All outputs overtemperature protected
■ All outputs short circuit protected
■ V_CC supply voltage 3.0 to 5.3 V
■ Very low current consumption in standby mode
typ. 5 µA
■ V_S operating range compliant: 6 V – 18 V
Applications
■ Stepper motor driver and / or DC
■ Intended to drive HVAC flaps
PowerSSO-36
*$3*&)7
Description
The L99MD01 is an octal half-bridge driver for
automotive applications.
The device is intended to drive DC and/or stepper
motors. Using the boost converter it’s possible to
drive 4 stepper motors simultaneously. Without
boost converter the system is able to run 3
stepper motors in sequential mode or 2 stepper
motors simultaneously. The octal half bridge
configuration allows also to drive 4 DC-motors
simultaneously and 7 DC-motors sequentially.
The integrated 24 bit standard Serial Peripheral
Interface (SPI) controls all outputs and provides
diagnostic information: normal operation, open-
load in on-state, overcurrent, temperature
warning and overtemperature.
September 2013
Table 1. Device summary
Package
Order codes
Tube
Tape and reel
PowerSSO-36 L99MD01XP L99MD01XPTR
Doc ID 17242 Rev 6
1/54
www.st.com
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