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NXP Semiconductors Electronic Components Datasheet

MC34931 Datasheet

5.0A H-Bridge

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NXP Semiconductors
Technical Data
5.0 A H-Bridge
The 34931 is a monolithic H-Bridge Power IC in a robust thermally enhanced
package. It is designed for any low voltage DC servo motor control application
within the current and voltage limits stated in this specification. This device is
powered by SMARTMOS technology.
The 34931 H-Bridge is able to control inductive loads with currents up to 5.0 A
peak. RMS current capability is subject to the degree of heatsinking provided to
the device package. Internal peak current limiting (regulation) is activated at load
currents above 6.5 A ±1.5 A. Output loads can be pulse-width modulated
(PWMed at frequencies up to 20 kHz. A load current feedback feature provides
a proportional (0.24% of the load current) current output suitable for monitoring
by a microcontroller’s A/D input. A status flag output reports undervoltage,
overcurrent, and overtemperature fault conditions.
Two independent inputs provide polarity control of two half-bridge totem-pole
outputs. The disable inputs are provided to force the H-Bridge outputs to tri-state
(high-impedance off-state).
Document Number: MC34931
Rev. 4.0, 8/2016
34931
Industrial
H-BRIDGE
EK SUFFIX (PB-FREE)
98ARL10543D
32-PIN SOICW-EP
Features
• 5.0 V to 36 V continuous operation with 24 V nominal operating voltage
(transient operation from 5.0 V to 40 V)
• 235 mΩ maximum RDS(on) at TJ = 150 °C (each H-Bridge MOSFET)
• 3.0 V and 5.0 V TTL/CMOS logic compatible inputs
• Overcurrent limiting (regulation) via internal constant-off-time PWM
• Output short-circuit protection (short to VPWR or GND)
• Temperature-dependant current-limit threshold reduction
• All inputs have an internal source/sink to define the default (floating input)
states
• Sleep mode with current draw < 20 µA
Applications
• DC motor control
• DC brushed and servo motor driver
• Copiers, printers
• Factory automation
• POS, ATM, vending kiosks
• Robotics
• Security camera control
• Ticketing, toll systems
VDD
VPWR
MCU
34931
SF
VPWR
FB
CCP
OUT1
IN1
IN2
D1
EN/D2
OUT2
PGND
AGND
MOTOR
Figure 1. MC34931 simplified application diagram
© 2016 NXP B.V.


NXP Semiconductors Electronic Components Datasheet

MC34931 Datasheet

5.0A H-Bridge

No Preview Available !

1 Orderable parts
Table 1. Orderable part variations
Part number
MC34931EK
MC34931SEK
PWM frequency
11 kHz
20 kHz
Temperature (TA)
- 40 °C to 85 °C
Notes
1. To order parts in Tape & Reel, add the R2 suffix to the part number.
Package
32 SOICW-EP
Notes
(1)
34931
2
NXP Semiconductors


Part Number MC34931
Description 5.0A H-Bridge
Maker NXP
Total Page 3 Pages
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