DRV8850 Datasheet, PDF (6/22 Pages) Texas Instruments – Low-Voltage H-Bridge IC With LDO Voltage Regulator

DRV8850
SLVSCC0A – NOVEMBER 2013 – REVISED JANUARY 2014
Electrical Characteristics
T_A = 25°C, over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
MIN
TYP
POWER SUPPLIES (VCC)
I_VCC
VCC operating supply current,
V_CC = 4.2 V, nSLEEP = LDOEN = V_CC
2.9
LDO regulator and driver enabled
I_VCQ1
VCC sleep mode supply current
V_CC = 4.2 V, nSLEEP = LDOEN = 0 V,
INXH = INXL = 0 V
I_VCQ2 VCC operating supply current,
V_CC = 4.2 V, nSLEEP = 0 V, LDOEN =
40
LDO regulator enabled, driver
disabled ⁽¹⁾
V_CC, INXH = INXL = 0 V
I_VCQ3 VCC operating supply current LDO V_CC = 4.2 V, nSLEEP = V_CC, LDOEN = 0 V
2.9
voltage regulator disabled, driver
enabled
V_UVLO
V_OVLO
VCC undervoltage lockout voltage ^{VCC rising}
V_CC falling
VCC overvoltage lockout voltage ^{VCC rising}
5.6
V_CC falling
5.5
LOGIC-LEVEL INPUTS (LDOEN, IN1H, IN1L, IN2H, IN2L, nSLEEP)
V_IL
Input low voltage
0
V_IH
V_HYS
I_IL
I_IH
Input high voltage
Input hysteresis
Input low current
Input high current
V_IN = 0
V_IN = 3.3 V
LDOEN
R_PD
Pulldown resistance
nSLEEP
INXH, INXL
VPROPI OUTPUT (VPROPI)
I_VPROPI VPROPI output current
V_CC = 4.2 V, resistor chosen to keep
VPROPI ≤ (V_CC – 1 V) / I_OUT
500 mA ≤ I_OUT ≤ 5 A
H-BRIDGE FETS (OUT1, OUT2)
R_DS(ON) HS FET on resistance
LS FET on resistance
I_OFF
Off-state leakage current
V_CC = 4.2 V, I_O = 2 A, T_A = 25°C
V_CC = 4.2 V, I_O = 2 A, T_A = 25°C
VOUT = 0 V
LDO REGULATOR (LDOOUT)
V_FB
LDO feedback (reference) voltage
V_DO
LDO regulator dropout voltage
ΔV_LINE
ΔV_LOAD
I_CL
LDO line regulation
LDO load regulation
LDO output current limit
V_CC = 4.2 V, IOUT = 100 mA, T_A = 25°C
V_CC = 4.2 V, IOUT = 100 mA, T_A = 85°C
V_CC from 4.2 to 5.5 V, VOUT = 3.3 V
VOUT = 3.3 V, IOUT from 1 to 100 mA
V_CC = 4.2 V, VOUT = 3.3 V, T_A ≥ 25°C
PROTECTION CIRCUITS
I_OCP
Overcurrent protection trip level
V_CC = 2.5 to 5.5 V
t_OCP
Overcurrent protection deglitch
time
t_RETRY
t_TSD
t_HYS
Overcurrent retry time
Thermal shutdown temperature
Thermal shutdown hysteresis
Die temperature (rising)
Temperature hysteresis
(1) Does not include the current consumption from the feedback resistors.
0.5 × V_CC
–1
0.08 × V_CC
3.5
400
200
I_OUT / 2000
35
30
–1
0.76
0.8
150
175
–2.5
–2.5
275
9.5
1
4
150
160
50
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MAX UNIT
mA
1 μA
μA
mA
2V
1.95
V
0.2 × V
V_CC
V_CC
V
V
1 μA
50 μA
MΩ
kΩ
kΩ
A
mΩ
mΩ
1 μA
0.84 V
mV
mV
2.5 %
2.5 %
mA
A
µs
ms
180 °C
°C
6
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