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器件3D模型￥ 1.133
TPS7A7001DDAR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
HSOP-8
描述:
TEXAS INSTRUMENTS TPS7A7001DDAR 芯片, 稳压器, LDO, 可调, 2A, 0.5V 至 5V, SOIC-8 新
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引脚图在P4Hot
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原理图在P6P8
封装尺寸在P15P17P18
焊盘布局在P12
标记信息在P15
封装信息在P14P15P16P17P18
技术参数、封装参数在P5
应用领域在P1
电气规格在P6
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TPS7A7001DDAR数据手册
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V = 0.5 x ( )
OUT
1 +
R
1
R
2
Thermal
Protection
OUT
V
OUT
IN
EN
Hysteresis
Current
Limit
UVLO
GND
Charge
Pump
0.5V Reference
R
1
R
2
FB
8
TPS7A7001
SBVS134F –JANUARY 2012–REVISED APRIL 2017
www.ti.com
Submit Documentation Feedback Copyright © 2012–2017, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The TPS7A7001 offers a high current supply with very low dropout voltage. The TPS7A7001 is designed to
minimize the required component count for a simple, small-size, and low-cost solution.
7.2 Functional Block Diagram
7.3 Feature Description
7.3.1 Enable (EN)
The enable pin (EN) is an active high logic input. When it is logic low, the device turns off and its consumption
current is less than 1 µA. When it is logic high, the device turns on. The EN pin is required to be connected to a
logic high or logic low level.
When the enable function is not required, connect EN to VIN.
7.3.2 Internal Current Limit
The TPS7A7001 internal current limit helps protect the regulator during fault conditions. During current limit, the
output sources a fixed amount of current that is largely independent of output voltage. For reliable operation, the
device should not be operated in a current limit state for extended periods of time.
Powering on the device with the enable pin, or increasing the input voltage above the minimum operating voltage
while a low-impedance short exists on the output of the device, may result in a sequence of high-current pulses
from the input to the output of the device. The energy consumed by the device is minimal during these events;
therefore, there is no failure risk. Additional input capacitance helps to mitigate the load transient requirement of
the upstream supply during these events.
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