參數(shù)資料
型號(hào)： TPS65171RHAR
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 4 A SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, GREEN, PLASTIC, MO-220VJJD-2, VQFN-40
文件頁(yè)數(shù)： 43/46頁(yè)
文件大?。?/td> 3644K
代理商： TPS65171RHAR
SLVSA22A – OCTOBER 2009 – REVISED JANUARY 2010
www.ti.com
PIN FUNCTIONS (continued)
PIN
I/O
DESCRIPTION
NAME
NO.
SS
17
O
Soft-start for the boost converter VS
BASE1
18
O
Base drive of the external npn transistor for the negative supply VSS
DLY2
19
O
Delay pin EN2 high to enable charge pump VONE
FB4
20
I
Feedback for the positive supply VONE
BASE2
21
I
Base drive of the external pnp transistor for the positive charge pump VONE
NC
22, 23
Not connected
AGND/VL-
24
Analog ground and connection of the bypass capacitor of VL-
SET
25
I
Input pin for the reference voltage to set the higher limit for the temperature compensation for
VOFFE
TS
26
I
Input pin for the NTC temperature sensor
FB5
27
I
Feedback pin for the negative buck-boost converter VOFFE
NC
28, 29
Not connected
SW5
30
O
Switch pin for the negative buck-boost converter generating VOFFE
VIN3
31
I
Input supply for the buck-boost converter generating VOFFE
RHVS
32
I
This pin is pulled low when HVS is high. The resistor connected to this pin sets the boost
converter output voltage when HVS is pulled high
FB1
33
I
Feedback for the boost converter VS
COMP
34
O
Compensation pin for the boost converter
VL+
35
O
Output of the internal logic regulator. Connect a capacitor between this pin and AGND/VL-
OS
36
I
Connect this pin to the boost converter output for overvoltage protection
SW1, SW2
37, 38
I
Switch pin for the boost converter and the positive charge pump VONE
PGND1,
39, 40
Power ground for the boost converter VS
PGND2
6
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS65171
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