S-1721 Series
www.sii-ic.com
© Seiko Instruments Inc., 2007-2010
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION
LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.2.0
_00
S-1721 Series, developed using the CMOS technology, is a 2-channel positive voltage regulator IC which has the low
dropout voltage, the high-accuracy output voltage and the low output current consumption of 150 mA.
Users are able to use a small ceramic capacitor of 1.0
μF
for this IC. This IC includes two regulator circuits in the package
SOT-23-6 or super-small SNT-6A.
S-1721 Series has much lower current consumption than S-1711 Series, this IC is ideal for mobile devices.
Features
•
Output voltage:
1.2 V to 5.0 V, selectable in 0.05 V step.
•
A ceramic capacitor of 1.0
μF
or more can be used as the I/O capacitor.
•
Wide input voltage range:
1.7 V to 6.5 V
•
High-accuracy output voltage:
±1.0%
•
Low dropout voltage:
130 mV typ. (products having the output of 3.0 V, I
OUT
=
100 mA)
•
Low current consumption:
During operation:
25
μA
typ., 45
μA
max. (products having the output of
3.0 V, per circuit)
During shutdown: 0.1
μA
typ., 1.0
μA
max.
Possible to output 150 mA (at V
IN
≥
V
OUT(S)
+
1.0 V)
*1
(per circuit)
•
Output current:
•
High ripple rejection:
80 dB typ. (products having the output under 1.8 V, at 1.0 kHz)
•
Built-in overcurrent protector:
limits overcurrent of output transistor
•
Built-in ON/OFF circuit:
Ensures long battery life.
•
Pull-up or pull-down resistor can be selected.
•
Lead-free, Sn 100%, halogen-free
*2
*1.
Attention should be paid to the power dissipation of the package when the output current is large.
*2.
Refer to “
Product Name Structure”
for details.
Applications
•
Power supply for cellular phones
•
Power supply for battery-powered devices
Packages
•
SNT-6A
•
SOT-23-6
Seiko Instruments Inc.
1
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
