© Seiko Instruments Inc., 2000-2015
LOW DROPOUT CMOS VOLTAGE REGULATOR
The S-818 Series is a positive voltage regulator developed by CMOS technology and featured by low dropout
voltage, high output voltage accuracy and low current consumption.
Built-in low on-resistance transistor provides low dropout voltage and large output current. A ceramic
capacitor of 2 μF or more can be used as an output capacitor. An ON/OFF circuit ensures long battery life.
The SOT-23-5 miniaturized package and the SOT-89-5 package are recommended for configuring portable
devices and large output current applications, respectively.
• Output voltage:
2.0 V to 6.0 V, selectable in 0.1 V step
• Output voltage accuracy:
• Dropout voltage:
170 mV typ. (5.0 V output product, IOUT = 60 mA)
• Current consumption:
During operation: 30 μA typ., 40 μA max.
During power-off: 100 nA typ., 500 nA max.
• Output current:
Possible to output 200 mA (3.0 V output product, VIN = 4 V)*1
Possible to output 300 mA (5.0 V output product, VIN = 6 V)*1
• Output capacitor:
A ceramic capacitor of 2 μF or more can be used.
• Built-in ON/OFF circuit:
Ensures long battery life.
• Operation temperature range: Ta = −40°C to +85°C
• 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.
• Constant-voltage power supply for battery-powered device, personal communication device and home
Seiko Instruments Inc.