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参数资料
| 型号： | TPS2420RSAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封装： | 4 X 4 MM, PLASTIC, QFN-16 |
| 文件页数： | 28/29页 |
| 文件大小： | 1368K |
| 代理商： | TPS2420RSAR |
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OUT
IN
OUT
V
0.04 I
=
-
(
)
(
)
AD _ IN max
IMON
LOAD max
63k
V
R
I
W
=
SLUS903C – JANUARY 2009 – REVISED AUGUST 2010
www.ti.com
VIN: Input voltage to the TPS2420. The recommended operating voltage range is 3 V to 18 V. All VIN pins
should be connected together and to the power source.
VOUT: Output connection for the TPS2420. When switched on the output voltage will be approximately:
(5)
All VOUT pins should be connected together and to the load.
LTCH: When pulled low the 2420 will attempt to restart after a fault. If left floating or pulled high the TPS2420 will
latch off after a fault. This pin is internally clamped at 3 V and is pulled to the internal 3-V supply by diode in
series with a 100-k
resistor.
PG: Active low, Open Drain output, Power Good indicates that there is no fault condition and the output voltage
is within 0.5 V of the input voltage. PG becomes operational before UV, whenever VIN is greater than 1 V.
IMON: This is a scaled analog output of IVIN. Select RIMON based on the maximum allowed A/D input voltage
(VAD_FS) and the desired full-scale current in VIN (IVIN_FS) per the following equation
(6)
This pin is clamped at 2.5 V to protect A/D converters. It is reccomended that IMON be ignored until after PG
asserts because the IMON output is accurate only after VOUT > 3 V.
8
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2420
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