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參數(shù)資料
| 型號： | TPS65251RHAT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC40 |
| 封裝： | 6 X 6 MM, GREEN, PLASTIC, VQFN-40 |
| 文件頁數(shù)： | 27/31頁 |
| 文件大小： | 1827K |
| 代理商： | TPS65251RHAT |
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www.ti.com
SLVSAA4B – JUNE 2010 – REVISED JANUARY 2011
TERMINAL FUNCTIONS (DCA) (continued)
NAME
NO.
I/O
DESCRIPTION
VIN
32
I
Input supply
VIN
33
I
Input supply
VIN
34
I
Input supply
GND
35
Ground pin
LX3
36, 37
O
Switching node for Buck 3
VIN3
38
Input supply for Buck 3. Fit a 10-F ceramic capacitor close to this pin.
BST3
39
I
Bootstrap capacitor for Buck 3. Fit a 47-nF ceramic capacitor from this pin
to the switching node.
EN3
40
I
Enable pin for Buck 3. A low level signal on this pin disables it. If pin is
left open a weak internal pull-up to V3V will allow for automatic enable.
For a delayed start-up add a small ceramic capacitor from this pin to
ground.
PAD
Power pad. Connect to ground.
ABSOLUTE MAXIMUM RATINGS
(1)
over operating free-air temperature range (unless otherwise noted)
Voltage range at VIN1,VIN2, VIN3, LX1, LX2, LX3
–0.3 to 18
V
Voltage range at LX1, LX2, LX3 (maximum withstand voltage transient < 10 ns)
–1 to 18
V
Voltage at BST1, BST2, BST3, referenced to Lx pin
–0.3 to 7
V
Voltage at V7V, COMP1, COMP2, COMP3
–0.3 to 7
V
Voltage at V3V, RLIM1, RLIM2, RLIM3, EN1,EN2,EN3, SS1, SS2,SS3, FB1, FB2, FB3,
–0.3 to 3.6
V
PGOOD, SYNC, ROSC, LOW_P
Voltage at AGND, GND
–0.3 to 0.3
V
TJ
Operating virtual junction temperature range
–40 to 125
°C
TSTG
Storage temperature range
–55 to 150
°C
(1)
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
VIN
Input operating voltage
4.5
18
V
TJ
Junction temperature
–40
125
°C
ELECTROSTATIC DISCHARGE (ESD) PROTECTION
MIN
MAX
UNIT
Human body model (HBM)
2000
V
Charge device model (CDM)
500
V
Copyright 2010–2011, Texas Instruments Incorporated
5
Product Folder Link(s): TPS65251
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