SLVSAB7E
May 2010 – March 2023
DRV8840
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
PWM Motor Driver
7.3.2
Bridge Control
7.3.3
Current Regulation
7.3.4
Decay Mode and Braking
7.3.5
Blanking Time
7.3.6
Protection Circuits
7.3.6.1
Overcurrent Protection (OCP)
7.3.6.2
Thermal Shutdown (TSD)
7.3.6.3
Undervoltage Lockout (UVLO)
7.4
Device Functional Modes
7.4.1
nRESET and nSLEEP Operation
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Current Regulation
8.2.2.2
Sense Resistor
8.2.3
Application Curves
9
Power Supply Recommendations
9.1
Bulk Capacitance Sizing
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Thermal Considerations
10.3.1
Power Dissipation
10.3.2
Heatsinking
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Community Resources
11.3
Trademarks
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|28
MPDS373B
Thermal pad, mechanical data (Package|Pins)
PWP|28
PPTD124Q
Orderable Information
slvsab7e_oa
slvsab7e_pm
6.3
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
V
M
Motor power supply voltage
(1)
8.2
45
V
V
REF
VREF input voltage
(2)
1
3.5
V
I
V3P3
V3P3OUT load current
0
1
mA
f
PWM
Externally applied PWM frequency
0
100
kHz
(1)
All V
M
pins must be connected to the same supply voltage.
(2)
Operational at VREF between 0 V and 1 V, but accuracy is degraded.