Rev.1.2
_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:
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.
•
Low ESR capacitor can be used: A ceramic capacitor of 1.0
µF
or more can be used for the output
capacitor.
70 dB typ. (at 1.0 kHz)
•
High ripple rejection:
Overcurrent of output transistor can be restricted.
•
Built-in overcurrent protector:
2.0 to 6.5 V
•
Operating voltage range:
Detector block
1.5 to 5.5 V, selectable in 0.1 V steps.
•
Output voltage:
•
High-accuracy output voltage:
±1.0%
Nch open-drain active low output
•
Output mode:
•
No need of an external capacitor for delay
No delay (60
µs),
50 ms, 100 ms
•
Three delay time settings:
0.8 to 6.5 V
•
Operating voltage range:
Whole regulator
•
Low current consumption
During operation: 85
µA
typ.
SOT-23-5, SOT-89-5
•
Small package:
*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
1
Seiko Instruments Inc.
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