S-1731 Series
www.sii-ic.com
© Seiko Instruments Inc., 2008-2010
SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT
CONSUMPTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.2.0
_00
S-1731 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 300 mA.
Users are able to use a small ceramic capacitor of 1.0
μF
for this IC. This IC includes two regulator circuits with
±1.0%
high-
accuracy output voltage in the super-small HSNT-6A package.
Compared with the conventional 300 mA output current 2-channel CMOS voltage regulators, high-density mounting is
realized by using the super-small package and a small ceramic capacitor. Also, the low current consumption makes the S-
1731 Series ideal for mobile devices.
Features
•
Output voltage:
1.2 V to 3.3 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 5.5 V
•
High-accuracy output voltage:
±1.0%
•
Low dropout voltage:
200 mV typ. (products having the output of 3.0 V, I
OUT
=
300 mA)
•
Low current consumption:
During operation:
24
μA
typ., 45
μA
max. (per circuit)
During shutdown: 0.1
μA
typ., 1.0
μA
max.
Possible to output 300 mA (at V
IN
≥
V
OUT(S)
+
1.0 V)
*1
(per circuit)
•
Output current:
•
High ripple rejection:
70 dB typ. (at 1.0 kHz, V
OUT
= 1.2 V)
•
Built-in overcurrent protector:
limits overcurrent of output transistor
•
Built-in power-off circuit:
Ensures long battery life.
•
Resistor is selectable in pull-up or pull-down
•
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
•
Power supply for home electric/electronic appliances
Package
•
HSNT-6A
Seiko Instruments Inc.
1
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