S-1701 Datasheet, PDF (1/70 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR WITH RESET FUNCTION

Rev.2.4_00
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
S-1701 Series
The S-1701 Series, developed based on CMOS technology, is a
voltage regulator with a reset function and integrates a high-
accuracy voltage detector with on-chip delay circuit and a positive
voltage regulator with a low dropout voltage and high output voltage
on one chip.
The S-1701 Series is available in many types according to the
selection of the voltage detector block of the voltage detector,
including a SENSE pin input product. A built-in low on-resistance
transistor provides a low dropout voltage and large output current.
Small ceramic capacitors are available and an external capacitor for
delay is needless. Small SOT-23-5 and SOT-89-5 packages realize
high-density mounting.
„ Features
Regulator block
• Output voltage:
• High-accuracy output voltage:
• High peak current capability:
• Built-in ON/OFF circuit:
• Low ESR capacitor can be used:
• High ripple rejection:
• Built-in overcurrent protector:
• Operating voltage range:
1.5 to 5.0 V, selectable in 0.1 V steps.
±1.0%
400 mA output is possible (at V_IN ≥ V_OUT(S) + 2.0 V)^*1
Ensures long battery life.
During power-off: 0.1 µA typ., 1.0 µA max.
A ceramic capacitor of 1.0 µF or more can be used for the output
capacitor.
70 dB typ. (at 1.0 kHz)
Overcurrent of output transistor can be restricted.
2.0 to 6.5 V
Detector block
• Output voltage:
1.5 to 5.5 V, selectable in 0.1 V steps.
• High-accuracy output voltage: ±1.0%
• Output mode:
Nch open-drain active low output
• No need of an external capacitor for delay
• Three delay time settings:
No delay (60 µs), 50 ms, 100 ms
• Operating voltage range:
0.8 to 6.5 V
Whole regulator
• Low current consumption
During operation: 85 µA typ.
• Small package:
SOT-23-5, SOT-89-5
• Lead-free products
*1. Attention should be paid to the power dissipation of the package when the output current is large.
„ Applications
• Power supply and reset circuit for battery-powered devices
• Power supply for personal communication devices
• Power supply for home appliances
„ Packages
Package Name
SOT-23-5
SOT-89-5
Package
MP005-A
UP005-A
Drawing Code
Tape
MP005-A
UP005-A
Reel
MP005-A
UP005-A
Seiko Instruments Inc.
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