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UC3172ADWP датащи(PDF) 4 Page - Texas Instruments

номер детали UC3172ADWP
подробное описание детали  Full Bridge Power Amplifier
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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UC3172ADWP датащи(HTML) 4 Page - Texas Instruments

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UC3172A
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Power Amplifiers A and B (cont.)
VC to VIN Headroom
Volts below VIN, delta High-Side, Vsat = 100mV,
IOUT =
−−550mA (Note 5)
0.23
0.4
V
High-Side Diode, VF
Id = 1A
1.5
V
Low-Side Diode, VF
Id = 1A, INH Activated, B Amplifier Only
1.5
V
Current Sense Amplifier
Common-mode Range
Supplies = 12V (Note 4)
−−3
13
V
Input Offset Voltage
VCM = 2.5V, Low Range Mode
2.0
mV
VCM = 2.5V, High Range Mode
4.0
mV
Input Offset Change with
Common Mode Input
VCM = 0V to 13V, Supplies = 12V, Low Range Mode
2000
µV/V
VCM = 0V to 13V, Supplies = 12V, High Range Mode
4000
µV/V
Voltage Gain
VDIFF = +1.0 to
−−1.0V, VCM = 2.5V, High Range Mode 0.485
0.50
0.515
V/V
VDIFF = +1.0 to
−−1.0V, VCM = 2.5V, Low Range Mode
1.95
2.0
2.05
V/V
Saturation Voltage
Low-Side, IOUT = 1mA
0.1
0.3
V
High-Side, IOUT =
−−1mA, Referenced to VIN
0.1
0.3
V
Parking Function
PARK Threshold Voltage
0.6
1.1
1.7
V
PARK Threshold Current
Internal Pull-Up, PARK = 0.6V
50
75
µA
PRKDRV Saturation Voltage
IOUT = 50mA
0.15
0.35
V
PRKDRV Leakage
VOUT = 20V
50
µA
Regulating Voltage at VPARK Input
1.275
1.30
1.325
V
Amplifier A Auxiliary Input Bias Current
−−300
−−750
nA
Amplifier A Parking High-Side
Saturation Voltage
IOUT =
−−50mA, VIN = 0V, VC = VL = 5V, PARK Open,
VC to AOUT
0.8
0.95
V
Minimum Parking Supply
At VC and VL, VIN = 0V,
AOUT - PRKDRV Vsat > 0.5V, IPARK = 50mA
1.4
1.7
V
Minimum Supply for Parking Drive
and Power OK Operation
At VL, VC = VIN = 0V, Vsat < 0.5V,
PRKDRV IOUT = 50mA, Rl = 30 ohms to 2V
1.1
1.4
V
PWROK IOUT = 5mA, Rl = 300 ohms to 2V
1.2
1.6
V
VL Parking Supply Current
PARK Open, VL = 5V, VC = 1.6V, VIN = 0V,
PWROK IOUT = 5mA, PRKDRV IOUT = 50mA
1.6
3.0
mA
Auxiliary Functions
INH Threshold
0.6
1.1
1.7
V
INH Current
INH = 1.7V
−−0.5
−−1.0
µA
RANGE Threshold
0.6
1.1
1.7
V
RANGE Current
RANGE = 1.7V
50
100
µA
COMPA Pin Saturation Voltage
RANGE = 0V, Pin Current =
±500µA,
Referenced to AOUT
0.02
0.1
V
COMPA Leakage Current
RANGE = 1.7V, Supplies = 12V,
AOUT
− VCOMPA = ±6V
5
µA
Total Supply Current when Inhibited
VIN, VC, and VL currents
1.0
1.8
mA
Thermal Shutdown Temperature
(Note 4)
165
°C
Unless otherwise stated, these specifications apply for TA = 0 to +70
°C, VIN = 5V,
VC = VIN = VL, REFIN = VIN/2, RANGE, PARK, and INH = 0V, and TA =TJ.
ELECTRICAL CHARACTERISTICS
Note 4: Guaranteed by design. Not 100% tested in production.
Note 5: The high -side saturation performance of the UC3172A is referenced to the VIN supply pin.
The VC supply pin can operate about 400mV below the VIN supply input without affecting the performance.
4


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