S-1721 Series
www.sii-ic.com
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION
LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.2.1
_01
© SII Semiconductor Corporation, 2007-2015
The 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 the S-1711 Series, this IC is ideal for mobile devices.
Features
1.2 V to 5.0 V, selectable in 0.05 V step
1.7 V to 6.5 V
±1.0%
130 mV typ. (3.0 V output product, I
OUT
= 100 mA)
During operation:
25
μA
typ., 45
μA
max. (3.0 V output product, per circuit)
During power-off:
0.1
μA
typ., 1.0
μA
max.
Possible to output 150 mA (V
IN
≥
V
OUT(S)
+
1.0 V)
*1
(per circuit)
•
Output current:
•
Input and output capacitors:
A ceramic capacitor of 1.0
μF
or more can be used.
•
Ripple rejection:
80 dB typ. (products having the output under 1.8 V, f = 1.0 kHz)
•
Built-in overcurrent protection circuit: Iimits overcurrent of output transistor.
•
Built-in ON/OFF circuit:
Ensures long battery life.
•
Pull-up or pull-down resistor is selectable.
•
Operation temperature range:
Ta =
−40°C
to
+85°C
*2
•
Lead-free, Sn 100%, halogen-free
*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.
•
Output voltage:
•
Input voltage:
•
Output voltage accuracy:
•
Dropout voltage:
•
Current consumption:
Applications
•
Constant-voltage power supply for cellular phone
•
Constant-voltage power supply for battery-powered device
Packages
•
SNT-6A
•
SOT-23-6
1
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