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| DRV8844_15 Datasheet, PDF (5/25 Pages) Texas Instruments – DRV8844 Quad ½-H-Bridge Driver IC | |||
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www.ti.com
DRV8844
SLVSBA2C â JULY 2012 â REVISED MAY 2015
7.4 Thermal Information
THERMAL METRIC(1)
DRV8844
PWP (HTSSOP)
UNIT
16 PINS
RθJA
RθJC(top)
RθJB
ÏJT
ÏJB
RθJC(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
31.6
°C/W
15.9
°C/W
5.6
°C/W
0.2
°C/W
5.5
°C/W
1.4
°C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
7.5 Electrical Characteristics
TA = 25°C, over operating free-air temperature range, all voltages relative to VNEG terminal (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
POWER SUPPLIES
IVM
VM operating supply current
IVMQ
VM sleep mode supply current
VUVLO
VM undervoltage lockout voltage
V3P3OUT REGULATOR
VM = 24 V, fPWM < 50 kHz
VM = 24 V
VM rising
1
5 mA
500
800 μA
6.3
8V
V3P3
V3P3OUT voltage
LOGIC-LEVEL INPUTS
IOUT = 0 to 1 mA
3.18
3.3
3.52 V
VIL
Input low voltage
VIH
Input high voltage
VHYS
Input hysteresis
IIL
Input low current
IIH
Input high current
RPD
Internal pulldown resistance
nFAULT OUTPUT (OPEN-DRAIN OUTPUT)
VIN = LGND
VIN = LGND + 3.3 V
LGND + 0.6 LGND + 0.7 V
LGND + 2.2
LGND + 5.25 V
50
600 mV
â5
5 μA
100 μA
100
kΩ
VOL
Output low voltage
IOH
Output high leakage current
H-BRIDGE FETS
IO = 5 mA
VO = LGND + 3.3 V
LGND + 0.5 V
1 μA
RDS(ON)
HS FET on resistance
LS FET on resistance
IOFF
Off-state leakage current
PROTECTION CIRCUITS
VM = 24 V, IO = 1 A, TJ = 25°C
VM = 24 V, IO = 1 A, TJ = 85°C
VM = 24 V, IO = 1 A, TJ = 25°C
VM = 24 V, IO = 1 A, TJ = 85°C
0.24
0.29
0.24
0.29
â2
0.39
â¦
0.39
2 μA
IOCP
tDEAD
tOCP
TTSD
Overcurrent protection trip level
Output dead time
Overcurrent protection deglitch time
Thermal shutdown temperature
Die temperature
3
5
90
5
150
160
A
ns
µs
180 °C
Copyright © 2012â2015, Texas Instruments Incorporated
Product Folder Links: DRV8844
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