DRV8832-Q1_15 Datasheet, PDF (6/18 Pages) Texas Instruments – LOW-VOLTAGE MOTOR DRIVER IC

DRV8832-Q1
SLVSBW9B – APRIL 2013 – REVISED JANUARY 2014
TYPICAL PERFORMANCE GRAPHS
100%
95%
90%
EFFICIENCY
vs
LOAD CURRENT
(V_IN = 5 V, V_OUT = 3 V)
85%
80%
75%
70%
65%
60%
55%
50%
0.2
0.4
0.6
0.8
LOAD - A
Figure 1.
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.5
EFFICIENCY
vs
OUTPUT VOLTAGE
(V_IN = 5 V, I_OUT = 500 mA)
Linear Regulator
DRV8832-Q1
1.5
2.5
3.5
4.5
5.5
V_OUT - V
Figure 2.
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FUNCTIONAL DESCRIPTION
Power Supervisor
The DRV8832 is capable of entering a low-power sleep mode by bringing both of the INx control inputs logic low.
The outputs will be disabled Hi-Z.
In order to exit the sleep mode, bring either or both of the INx inputs logic high. This will enable the H-bridges.
When exiting the sleep mode, the FAULTn pin will pulse low.
PWM Motor Driver
The DRV8832-Q1 contains an H-bridge motor driver with PWM voltage-control circuitry with current limit circuitry.
A block diagram of the motor control circuitry is shown below.
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