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參數資料
| 型號： | TPS40197RGYR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封裝： | PLASTIC, MO-241BB, VQFN-16 |
| 文件頁數： | 2/30頁 |
| 文件大小： | 931K |
| 代理商： | TPS40197RGYR |
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HDRV
VID3
SW
BOOT
LDRV
BP
GND
REF
VID0
EN
FB
COMP
VDD
PGOOD
VID1
VID2
TI Information — Selective Disclosure
SLUS886 – NOVEMBER 2008
www.ti.com
DEVICE INFORMATION
RGY PACKAGE
(Bottom View)
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Gate drive voltage for the high-side N-channel MOSFET. A 100-nF capacitor (typical) must be connected
BOOT
12
I
between this pin and SW.
Output bypass for the internal regulator. Connect a low ESR bypass ceramic capacitor of 1 mF or greater from
BP
10
O
this pin to GND.
COMP
6
O
Output of the error amplifier and connection node for loop feedback components.
Logic level input which starts or stops the controller from an external user command. A high level turns the
EN
4
I
controller on. A weak internal pull-up holds this pin high so that the pin may be left floating if this function is
not used. Pulling this pin low disables the controller.
FB
5
I
Inverting input to the error amplifier.
HDRV
14
O
Bootstrapped gate drive output for the high-side N-channel MOSFET.
LDRV
11
O
Gate drive output for the low-side synchronous rectifier N-channel MOSFET.
PGOOD
8
O
Open drain power good output.
Non-Inverting input to the error amplifier. Its voltage range is from 0.9 V to 1.2 V in 20-mV steps. It is also
internally connected to the DAC output through a unit gain buffer with 650-mA source/sink current capability.
REF
3
I
An external capacitor connected from this pin to GND programs the output voltage transition rate when VID
code changes.
VDD
7
I
Power input to the controller. A 1-mF bypass capacitor should be connected closely from this pin to GND.
VID0
2
I
VID1
1
I
Logic level inputs to the internal DAC that provides the reference voltage for output regulation. These pins are
internally pulled up to a 1.68-V source with 80-mA pull-up current.
VID2
16
I
VID3
15
I
GND
9
Ground connection to the controller
10
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS40197
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