DRV8841_15 Datasheet, PDF (3/28 Pages) Texas Instruments – Dual H-Bridge Driver IC

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5 Pin Configuration and Functions
CP1 1
CP2 2
VCP 3
VMA 4
AOUT1 5
ISENA 6
AOUT2 7
BOUT2 8
ISENB 9
BOUT1 10
VMB 11
AVREF 12
BVREF 13
GND 14
PWP Package
28 Pin HTSSOP
Top View
GND
(PowerPAD)
DRV8841
SLVSAC0F – MAY 2010 – REVISED DECEMBER 2015
28 GND
27 BI1
26 BI0
25 AI1
24 AI0
23 BIN2
22 BIN1
21 AIN1
20 AIN2
19 DECAY
18 nFAULT
17 nSLEEP
16 nRESET
15 V3P3OUT
PIN
NAME
NO.
POWER AND GROUND
GND
14, 28
VMA
4
VMB
11
V3P3OUT
15
CP1
1
CP2
2
VCP
3
CONTROL
AIN1
21
AIN2
20
AI0
24
AI1
25
BIN1
22
BIN2
23
BI0
26
BI1
27
I/O ⁽¹⁾
Pin Functions
DESCRIPTION
—
Device ground
—
Bridge A power supply
—
Bridge B power supply
O
3.3-V regulator output
IO
Charge pump flying capacitor
IO
Charge pump flying capacitor
IO
High-side gate drive voltage
I
Bridge A input 1
I
Bridge A input 2
I
Bridge A current set
I
I
Bridge B input 1
I
Bridge B input 2
I
Bridge B current set
I
EXTERNAL COMPONENTS
OR CONNECTIONS
Connect to motor supply (8.2 V to 45 V). Both
pins must be connected to the same supply,
bypassed with a 0.1-uF capacitor to GND, and
connected to appropriate bulk capacitance.
Bypass to GND with a 0.47-μF 6.3-V ceramic
capacitor. Can be used to supply VREF.
Connect a 0.01-μF 50-V capacitor between
CP1 and CP2.
Connect a 0.1-μF 16-V ceramic capacitor and
a 1-MΩ resistor to VM.
Logic input controls state of AOUT1. Internal
pulldown.
Logic input controls state of AOUT2. Internal
pulldown.
Sets bridge A current: 00 = 100%,
01 = 71%, 10 = 38%, 11 = 0
Internal pulldown.
Logic input controls state of BOUT1. Internal
pulldown.
Logic input controls state of BOUT2. Internal
pulldown.
Sets bridge B current: 00 = 100%,
01 = 71%, 10 = 38%, 11 = 0
Internal pulldown.
(1) Directions: I = input, O = output, OZ = tri-state output, OD = open-drain output, IO = input/output
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