DRV8871_16 Datasheet, PDF (4/25 Pages) Texas Instruments – Brushed DC Motor Driver With Internal Current Sense (PWM Control)

DRV8871
SLVSCY9A – AUGUST 2015 – REVISED JANUARY 2016
www.ti.com
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VM
Power supply voltage
6.5
45
V
V_I
f_PWM
I_peak
T_A
Logic input voltage (IN1, IN2)
Logic input PWM frequency (IN1, IN2)
Peak output current ⁽²⁾
Operating ambient temperature ⁽²⁾
0
5.5
V
0
200 ⁽¹⁾
kHz
0
3.6
A
–40
125
°C
(1) The voltages applied to the inputs should have at least 800 ns of pulse width to ensure detection. Typical devices require at least
400 ns. If the PWM frequency is 200 kHz, the usable duty cycle range is 16% to 84%.
(2) Power dissipation and thermal limits must be observed
6.4 Thermal Information
THERMAL METRIC ⁽¹⁾
DRV8871
DDA (HSOP)
UNIT
8 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
41.1
°C/W
53.1
°C/W
23.1
°C/W
8.2
°C/W
23
°C/W
2.7
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
4
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