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TPS65232A2 データシート(PDF) 8 Page - Texas Instruments

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部品番号 TPS65232A2
部品情報  TRIPLE BUCK POWER MANAGEMENT IC
PDF  32 Pages
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65232A2 データシート(HTML) 8 Page - Texas Instruments

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TPS65232
SLVSA42 – FEBRUARY 2010
www.ti.com
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
Input voltage range at VIN
10.8
12
22
V
Input voltage range at VINB
4.75
6.1
Voltage range, EN_BCK1, EN_BCK2, EN_BCK3
0
3.3
V
TA
Ambient operating temperature
0
50
°C
ELECTRICAL CHARACTERISTICS
VIN = 12 V ±5%, VINB2, VINB3 = 5 V ±5%, TJ = 0°C to 150°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT VOLTAGE
VIN
Input supply voltage
10.8
12
22
V
VIN rising
10.8
UVLO VIN
UVLO threshold – VIN (main supply)
V
VIN falling
4.7
VINB rising
4.75
UVLO threshold – VINB
UVLO VINB
V
(BUCK2/BUCK3 supply)
VINB falling
4.25
INPUT CURRENT
All regulators/USB switches
ICCQ
Input supply current
4
mA
disabled
BUCK ENABLE INPUTS (EN_BCK1,2,3)
VEN
Enable threshold
1.2
V
VENHYS
Enable voltage hysteresis
100
mV
IPULLUP
Pull-up current
tEN = 0.2 ms/nF
6
mA
RD
Discharge resistor
1
k
Ω
tD
Discharge time
Power-up
5
ms
PWM CONTROLLER (BUCK1)
VOUT
Output voltage range(1)
3.3
6.1
V
VFB
Feedback voltage
–2%
0.804
2%
V
LDRV
High and low side drive voltage
No load
6
V
HDRV
R_ONLDRV
Low side ON resistance
8
Ω
R_OFFLDRV
Low side OFF resistance
1
Ω
R_ONHDRV
High side ON resistance
20
Ω
R_OFFHDRV
High side OFF resistance
1
Ω
d
Duty cycle(2)
20
80
%
AMOD
Modulator gain
12
fSW
Switching frequency
500
kHz
Current source for setting OCP trip
ITRIP
TA = 25°C
10
mA
point
TCTRIP
Temperature coefficient of ITRIP
3700
ppm/°C
RTRIP
Current-limit setting resistor
80
250
kW
COUT
Output capacitance
22(3)
mF
L
Nominal inductance
Recommended
4.7
mH
BUCK2
VOUT
Output voltage range(1)
0.9
3.3
V
VFB
Feedback voltage
– 2%
0.804
2%
V
(1)
Output voltage range is limited by the minimum and maximum duty cycle. VOUT(min) ~ d(min) x VINPUT and VOUT(max) ~ d(max) x
VINPUT.
(2)
Performance outside these limits is not guaranteed.
(3)
Absolute value. User should make allowances for tolerance and variations due to component selection.
8
Submit Documentation Feedback
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS65232
Not Recommended for New Designs



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