L9958XP Datasheet, PDF (1/38 Pages) STMicroelectronics – Low RDSON SPI controlled H-Bridge

L9958
Low R_DSON SPI controlled H-Bridge
Features
■ Programmable current regulation peak
threshold by SPI up to 8.6 A typ.
■ Operating battery supply voltage 4.0 V to 28 V
■ Operating V_dd supply voltage 4.5 V to 5.5 V
■ All pins withstand 19 V, Vs and output pins
withstand 40 V
■ Full path R_on from 100 mΩ (at T_j = -40 °C) to
300 mΩ (at T_j =150 °C)
■ Logic inputs TTL/CMOS-compatible
■ Operating frequency up to 20 kHz
■ 16-bit SPI interface for
configuration/diagnostics, daisy chain
capability
■ Over temperature and short circuit protection
■ V_S undervoltage disable function
■ V_dd undervoltage and overvoltage protection
■ V_dd overvoltage detection
■ Open-load detection in ON condition
■ Full diagnostics in OFF state
■ Enable and disable input
■ Low stand by current (<10 µA)
■ Voltage and current slew-rate control for low
EMI, programmable through SPI
■ Available in three power packages
Description
The L9958 is an SPI controlled H-Bridge,
designed for the control of DC and stepper motors
in safety critical applications and under extreme
environmental conditions.
The H-Bridge is protected against over
temperature, short circuits and has an
undervoltage lockout for all the supply voltages V_s
and V_dd, and for overvoltage on V_dd. All
malfunctions cause the output stages to go
tristate.
Datasheet − production data
*$3*36
PowerSO-20
*$3*36
PowerSSO24
*$3*36
PowerSO16
Detailed failure diagnostics on each channel is
provided via SPI: short circuit to battery, short
circuit to ground, short circuit overload, over
temperature.
Open-load can be detected in ON condition, for
the widest application ranges. Current regulation
threshold can be set by SPI from 2.5 A to 8.6 A
(Typ.), in 4 steps. Guaranteed accuracy is ±10 %
on all temp range, using an external reference
resistor with 1% accuracy over all temp range.
Current limitation threshold is linearly reduced by
temperature over 165 °C.and a thermal warning
bit is set by SPI. The H-Bridge contains integrated
free-wheel diodes. In case of free-wheeling
condition, the low side transistor is switched on in
parallel of its diode to reduce power dissipation.
A multiple wire bonding technique, as well as ST
proprietary package design is making L9958
compatible with three power packages, for
maximum flexibility:
PowerSO-20 package (medium power, JEDEC
standard MO166);
PowerSO16 package (medium power, lower
cost);
PowerSSO24 package (low power, very low cost
JEDEC standard MO271A).
Table 1. Device summary
Order code
Package
L9958
PowerSO-20
L9958SB
PowerSO16
L9958XP
PowerSSO24
Packing
Tube
Tube
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September 2013
This is information on a product in full production.
Doc ID 17269 Rev 5
1/38
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