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參數資料
| 型號： | TPS650532RGET |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 5-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24 |
| 封裝： | 4 X 4 MM, 0.50 MM PITCH, GREEN, PLASTIC, QFN-24 |
| 文件頁數： | 22/27頁 |
| 文件大小： | 858K |
| 代理商： | TPS650532RGET |
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SLVS754C – MARCH 2007 – REVISED SEPTEMBER 2009 ............................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Vcc = VINDCDC1/2 = 3.6V, EN = Vcc, MODE = GND, L = 2.2H, COUT = 22F, TA = –40°C to 85°C typical values
are at TA = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
OSCILLATOR
fSW
Oscillator frequency
2.025
2.25
2.475
MHz
OUTPUT
VOUT
Output voltage range
0.6
VIN
V
Vref
Reference voltage
600
mV
VIN = 2.5 V to 6 V, Mode = GND,
-2%
0
2%
PFM operation, 0 mA < IOUT < IOUTMAX
DC output voltage
DCDC1,
VOUT
accuracy
DCDC2(1)
VIN = 2.5 V to 6 V, Mode = VIN,
–1%
0
1%
PWM operation, 0 mA < IOUT < IOUTMAX
IOUT = 1 mA, Mode = GND, VO = 1.3 V,
ΔVOUT
Power save mode ripple voltage(2)
25
mVPP
Bandwidth = 20 MHz
tStart
Start-up time
Time from active EN to Start switching
170
s
tRamp
VOUT Ramp up Time
Time to ramp from 5% to 95% of VOUT
750
s
RESET delay time
Input voltage at threshold pin rising
80
100
120
ms
VOL
RESET output low voltage
IOL = 1 mA, Vthreshold < 1 V
0.2
V
RESET sink current
1
mA
RESET output leakage current
Vthreshold > 1 V
10
nA
Vth
Threshold voltage
falling voltage
0.98
1
1.02
V
VLDO1, VLDO2, VLDO3 LOW DROPOUT REGULATORS
Input voltage range for LDO1, LDO2,
VINLDO
1.5
6.5
V
LDO3
VLDO1
LDO1 output voltage range
1
3.6
V
VLDO2
LDO2 output voltage range
1
3.6
V
LDO3 output voltage for TPS65053
1.3
VLDO3
LDO3 output voltage for TPS650531
1.2
V
LDO3 output voltage for TPS650532
1.5
V(FB)
Feedback voltage for FB_LDO1, FB_LDO2
1
V
Maximum output current for LDO1
400
mA
IO
Maximum output current for LDO2, LDO3
200
mA
LDO1 short-circuit current limit
VLDO1 = GND
850
mA
I(SC)
LDO2 & LDO3 short-circuit current limit
VLDO2 = GND, VLDO3 = GND
420
mA
Dropout voltage at LDO1
IO = 400 mA, VINLDO1 = 1.8 V
280
mV
Dropout voltage at LDO2, LDO3
IO = 200 mA, VINLDO2/3 = 1.8 V
280
mV
Output voltage accuracy for LDO1, LDO2,
IO = 10 mA
–2%
1%
LDO3(1)
Line regulation for LDO1, LDO2, LDO3
VINLDO1,2 = VLDO1,2 + 0.5 V (min. 2.5 V) to 6.5V, IO = 10 mA
–1%
1%
IO = 0 mA to 400 mA for LDO1
Load regulation for LDO1, LDO2, LDO3
–1%
1%
IO = 0 mA to 200 mA for LDO2, LDO3
Regulation time for LDO1, LDO2, LDO3
Load change from 10% to 90%
25
s
Internal discharge resistor at VLDO1,
R(DIS)
Active when LDO is disabled
350
VLDO2, VLDO3
Thermal shutdown
Increasing junction temperature
140
°C
Thermal shutdown hysteresis
Decreasing junction temperature
20
°C
(1)
Output voltage specification does not include tolerance of external voltage programming resistors.
(2)
In Power Save Mode, operation is typically entered at IPSM = VIN / 32 .
4
Copyright 2007–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS65053 TPS650531 TPS650532
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