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S-1170 Datasheet, PDF (1/29 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION AND LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.0_02
HIGH RIPPLE-REJECTION AND LOW DROPOUT HIGH OUTPUT CURRENT
CMOS VOLTAGE REGULATOR
S-1170 Series
The S-1170 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, a built-in
overcurrent protector prevents the load current from
exceeding the current capacitance of the output
transistor, and a built-in thermal shutdown circuit
prevents damage caused by the heat. 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. Small SOT-89-5
and 6-Pin HSON(A) packages realize high-density
mounting.
„ Features
• Output voltage:
1.5 V to 5.5 V, selectable in 0.1 V steps.
• High-accuracy output voltage: ±1.0%
• Low dropout voltage:
120 mV typ. (3.0 V output product, IOUT = 300 mA)
• Low current consumption:
During operation: 80 µA typ., 160 µA max.
• High current capability:
During shutdown: 0.1 µA typ., 1.0 µA max.
800 mA output is possible (at VIN ≥ VOUT(S) + 1.0 V)*1
• Built-in ON/OFF circuit:
Ensures long battery life.
• Low ESR capacitor can be used: A ceramic capacitor of 4.7 µF or more can be used for the output
capacitor.
• High ripple rejection:
70 dB typ. (at 1.0 kHz)
• Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
• Built-in thermal shutdown circuit: Damage caused by heat can be prevented.
• Small package:
SOT-89-5, 6-Pin HSON(A)
• Lead-free products
*1. Attention should be paid to the power dissipation of the package when the output current is large.
„ Applications
• Power supply for DVD and CD-ROM drives
• Power supply for battery-powered devices
• Power supply for personal communication device
• Power supply for note PCs
„ Packages
Package Name
SOT-89-5
6-Pin HSON(A)
Package
UP005-A
PD006-A
Drawing Code
Tape
UP005-A
PD006-A
Reel
UP005-A
PD006-A
Seiko Instruments Inc.
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