參數(shù)資料
型號(hào)： S-T111
英文描述： Voltage Regulators
中文描述： 穩(wěn)壓器
文件頁(yè)數(shù)： 1/22頁(yè)
文件大小： 379K
代理商： S-T111
Rev.1.2
_00
HIGH RIPPLE-REJECTION
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-T111 Series
Seiko Instruments Inc.
1
The S-T111 Series is a positive voltage regulator
with a low dropout voltage, high output voltage
accuracy, and low current consumption developed
based on CMOS technology.
A built-in low on-resistance transistor provides a
low dropout voltage and large output current, and
a built-in overcurrent protector prevents the load
current from exceeding the current capacitance of
the output transistor. An ON/OFF circuit ensures a
long battery life. Compared with the voltage
regulators using the conventional CMOS process,
a larger variety of capacitors are available,
including small ceramic capacitors. A small SOT-
23-5 package realizes high-density mounting.
Features
Output voltage:
High-accuracy output voltage:
Low dropout voltage:
Low current consumption:
1.5 V to 5.5 V, selectable in 0.1 V steps.
±
1.0%
190 mV typ. (3.0 V output product, I
OUT
=
100 mA)
During operation: 50
μ
A typ., 90
μ
A max.
During shutdown: 0.1
μ
A typ., 1.0
μ
A max.
150 mA output is possible (@ V
IN
≥
V
OUT(S)
+
1.0 V)
*1
Ensures long battery life.
High peak current capability:
Built-in ON/OFF circuit:
Low ESR capacitor can be used: A ceramic capacitor of 0.1
μ
F or more can be used for the output
capacitor.
High ripple rejection:
80 dB typ. (@ 1.0 kHz)
Built-in overcurrent protector:
Overcurrent of output transistor can be restricted.
Small package:
SOT-23-5
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
Applications
Power supply for battery-powered devices
Power supply for personal communication devices
Power supply for home electric/electronic appliances
Power supply for cellular phones
Package
SOT-23-5
(Package drawing code: MP005-A)
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