TC55_05 Datasheet, PDF (1/18 Pages) Microchip Technology – 1 μA Low Dropout Positive Voltage Regulator

Obsolete Device
TC55
1 µA Low Dropout Positive Voltage Regulator
Features
• Low Dropout Voltage: 120 mV (typ) at 100 mA,
380 mV (typ) at 200 mA
• High Output Current: 250 mA (V_OUT = 5.0V)
• High Accuracy Output Voltage: ±2% (max)
(±1% Semi-Custom Version)
• Low Power Consumption: 1.1 µA (typ)
• Low Temperature Drift: ±100 ppm/°C (typ)
• Excellent Line Regulation: 0.2%/V (typ)
• Package Options: 3-Pin SOT-23A, 3-Pin SOT-89
and 3-Pin TO-92
• Short-Circuit Protection
• Standard Output Voltage Options: 1.2V, 1.8V,
2.5V, 3.0V, 3.3V, 5.0V
Applications
• Battery-Powered Devices
• Cameras and Portable Video Equipment
• Pagers and Cellular Phones
• Solar Powered Instruments
• Consumer Products
Package Types
3-Pin SOT-23A
V_IN
3
3-Pin SOT-89
V_IN
TC55
1
GND
2
V_OUT
TC55
1 23
GND V_IN V_OUT
3-Pin TO-92
123
General Description
The TC55 Series is a collection of CMOS low dropout,
positive voltage regulators that can source up to
250 mA of current, with an extremely low input-output
voltage differential of 380 mV (typ) at 200 mA.
The TC55’s low dropout voltage, combined with the low
current consumption of only 1.1 µA (typ), makes it ideal
for battery operation. The low voltage differential (drop-
out voltage) extends the battery operating lifetime. It
also permits high currents in small packages when
operated with minimum V_IN – V_OUT differentials.
The circuit also incorporates short-circuit protection to
ensure maximum reliability.
Functional Block Diagram
V_IN
V_OUT
Short-Circuit
Protection
Voltage
Reference
GND
Bottom
View
GND V_IN V_OUT
Note: 3-Pin SOT-23A is equivalent to the
EIAJ SC-59.
© 2005 Microchip Technology Inc.
DS21435F-page 1