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參數資料
| 型號： | TPS65162RGZR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 4.2 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC48 |
| 封裝： | 7 X 7 MM, PLASTIC, VQFN-48 |
| 文件頁數： | 33/36頁 |
| 文件大小： | 1034K |
| 代理商： | TPS65162RGZR |
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SLVS771B – MAY 2007 – REVISED JUNE 2008 ............................................................................................................................................................... www.ti.com
TERMINAL FUNCTIONS (continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Internal reference output. Connect 220-nF capacitor directly from this pin to AGND to minimize possible noise
REF
17
O
coupling into the reference of the IC.
Connecting a capacitor from this pin to GND allows setting the delay time between the step down converter
DLY1
18
O
and negative charge pump VGL
19, 20,
NC
Not connected.
40
FBB
21
I
Feedback of the buck converter.
CBOOT
22
I
N-channel MOSFET gate drive voltage for the buck converter. Connect a capacitor from this pin to SWB.
SWB
23, 24
O
Switch pin of the buck converter
PVIN
25, 26
I
Power input for the buck converter.
VIN
27
I
Analog input voltage of the device. This pin should be bypassed with a 1-
F capacitor for good filtering.
Frequency selection pin. With FREQ=high, the device operates with 750 kHz. With FREQ=low, the device
FREQ
28
I
operates with 500kHz.
Connecting a capacitor from this pin to GND allows setting the delay time between the step down converter
DLY2
29
O
and positive charge pump VGH.
SS
30
O
soft-start of the boost converter. Connect a capacitor from this pin to GND.
VC
31
O
Compensation pin of the boost converter.
EN2
32
I
Enable pin of the boost converter block.
Enable pin of the buck converter and negative charge pump. When this pin is pulled high, the buck converter
EN1
33
I
starts up, and after a delay time set by DLY1, the negative charge pump starts up. A logic high enables the
device and a logic low shut down the device.
PGND1
34
Power ground.
PGND2
35
Ground for boost converter.
PGND3
36
SW
37, 38
I
Switch pin of the boost converter
SWI
39
I
Input of the isolation switch. The SWI pin is connected to internal overvoltage protection comparator.
FB
41
I
Feedback of the boost converter generating Vs
SWO
42
O
Output of the isolation switch
Power input voltage pin for Operational Amplifier. Connect AVIN to the input of the isolation switch, SWI.
AVIN
43
I
Bypass this pin with a 1-
F bypass capacitor.
NEG2
44
I
Inverting input of Operational Amplifier 2
POS2
45
I
Non inverting input of Operational Amplifier 2
OUT2
46
O
Output of Operational Amplifier 2
OGND
47
Ground for Operational Amplifier.
NEG1
48
I
Inverting input of Operational Amplifier 1
6
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65162
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