HIGH RIPPLE-REJECTION WLP PACKAGE
LOW DROPOUT CMOS VOLTAGE REGULATOR
The S-L2985 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, and a
built-in overcurrent protector prevents the load
current from exceeding the current capacitance of
the output transistor. 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.
WLP-4B package realizes high-density mounting.
1.5 V to 5.5 V, selectable in 0.1 V steps.
190 mV typ. (3.0 V output product, I
During operation: 50
During shutdown: 0.1
High peak current capability:
150 mA output is possible (@ V
Ensures long battery life.
Built-in ON/OFF circuit:
Low ESR capacitor can be used: A ceramic capacitor of 0.47
or more can be used for the output
80 dB typ. (@ 1.0 kHz)
High ripple rejection:
Overcurrent of output transistor can be restricted.
Built-in overcurrent protector:
Attention should be paid to the power dissipation of the package when the output current is large.
High-accuracy output voltage:
Low dropout voltage:
Low current consumption:
Power supply for battery-powered devices
Power supply for personal communication devices
Power supply for home electric/electronic appliances
Power supply for cellular phones
Seiko Instruments Inc.