■ OPERATING SUPPLY VOLTAGE 5V TO 28V
■ TYPICAL RDSon = 150 mΩ FOR EACH
OUTPUT TRANSISTOR (AT 25°C)
■ CONTINOUS DC LOAD CURRENT 5A
(Tcase < 100 °C)
■ OUTPUT CURRENT LIMITATION AT TYP.
■ SHORT CIRCUIT SHUT DOWN FOR OUTPUT
CURRENTS OVER TYP. 10.6A
■ LOGIC- INPUTS TTL/CMOS-COMPATIBLE
■ OPERATING-FREQUENCY UP TO 30 kHz
■ OVER TEMPERATURE PROTECTION
■ SHORT CIRCUIT PROTECTION
■ UNDERVOLTAGE DISABLE FUNCTION
■ DIAGNOSTIC BY SPI OR STATUS-FLAG
■ ENABLE AND DISABLE INPUT
■ SO20 POWER PACKAGE
The L9929 is an SPI controlled H-Bridge, de-
signed for the control of DC and stepper motors in
safety critical applications and under extreme en-
Figure 2. Block Diagram
SPI CONTROLLED H-BRIDGE
Figure 1. Package
Table 1. Order Codes
The H-Bridge is protected against over tempera-
ture and short circuits and has an under voltage
lockout for all the supply voltages "VS" (Main DC
power supply). All malfunctions cause the output
stages to go tristate.
The H-Bridge contains integrated free-wheel di-
odes. In case of free-wheeling condition, the low
side transistor is switched on in parallel of its diode
to reduce the current injected into the substrate.
Switching in parallel is only allowed, if the voltage
level of the according output-stage is below the
ground-level. In this case it must be ensured, that
the upper transistor is switched off.
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.