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| 型号： | TPS53126PWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.17 A DUAL SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | PLASTIC, TSSOP-24 |
| 文件页数： | 15/30页 |
| 文件大小： | 899K |
| 代理商： | TPS53126PWR |
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O
IN
trip
OCL
DS(on)
IN
V
(V
Vo)
V
= I
+
R
2
L1
sw
V
-
÷
è
(13)
trip
V
(mV)
R
(k ) =
I
( A)
W
m
(14)
LAYOUT SUGGESTIONS
SLUS909 – MAY 2009........................................................................................................................................................................................................ www.ti.com
Where:
RDS(on) = Low Side FET on-resistance
Itrip = TRIP pin source current （= 10 A）
IOCL = Over current limit
Keep the input switching current loop as small as possible.
Place the input capacitor (C3,C6) close to the top switching FET. The output current loop should also
be kept as small as possible.
Keep the SW node as physically small and short as possible as to minimize parasitic capacitance and
inductance and to minimize radiated emissions Kelvin connections should be brought from the
output to the feedback pin (FBx) of the device.
Keep analog and non-switching components away from switching components
Make a single point connection from the signal ground to power ground
Do not allow switching current to flow under the device
22
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS53126
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