1
TC55 Series
LOW DROPOUT POSITIVE VOLTAGE REGULATOR
FEATURES
s
s
s
s
s
s
s
s
Very Low Dropout Voltage .... 120mV typ at 100mA
380mV typ at 200mA
High Output Current .............. 250mA (V
OUT
= 5.0V)
High Accuracy Output Voltage ........................
±
2%
(
±
1% Semicustom Version)
Wide Output Voltage Range .................... 2.1V-6.0V
Low Power Consumption ................... 1.1
µ
A (Typ.)
Low Temperature Drift ...................
±
100ppm/
°
C Typ
Excellent Line Regulation ..................... 0.2%/V Typ
Package Options ....................................SOT-23A-3
SOT-89-3
TO-92
Short Circuit Protected
Standard 3.0V, 3.3V and 5.0V Output Voltages
Custom Voltages Available from 2.1V to 6.0V in
0.1V Steps.
GENERAL DESCRIPTION
The TC55 Series is a collection of CMOS low dropout
positive voltage regulators which can source up to 250mA of
current with an extremely low input-output voltage differen-
tial of 380mV.
The low dropout voltage combined with the low current
consumption of only 1.1µA makes this part ideal for battery
operation. The low voltage differential (dropout voltage)
extends battery operating lifetime. It also permits high cur-
rents in small packages when operated with minimum V
IN
–
V
OUT
differentials.
The circuit also incorporates short-circuit protection to
ensure maximum reliability.
PIN CONFIGURATIONS
*SOT-23A-3
VIN
2
1 2 3
2
3
4
TO-92
s
s
s
SOT-89-3
APPLICATIONS
s
s
s
s
s
Battery-Powered Devices
Cameras and Portable Video Equipment
Pagers and Cellular Phones
Solar-Powered Instruments
Consumer Products
TC55
1
GND
3
VOUT
1
GND
2
VIN
TC55
TC55
3
VOUT
5
6
7
GND
VIN
*SOT-23A-3 is equivalent to EIAJ (SC-59)
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
PART CODE
TC55 RP XX X X X XX XXX
Output Voltage:
Ex: 21= 2.1V; 60 = 6.0V
Extra Feature Code:
Fixed: 0
VIN
VOUT
Short-circuit
Protection
+
Tolerance:
1 =
±1.0%
(Custom)
2 =
±2.0%
(Standard)
Temperature:
E: – 40°C to +85°C
Package Type and Pin Count:
CB: SOT-23A-3 (Equivalent to EIAJ (SC-59))
MB: SOT-89-3
ZB: TO-92-3
Taping Direction:
Standard Taping
Reverse Taping
No suffix: TO-92 Bulk
TC55-20 11/8/96
Voltage
Reference
GND
VOUT
TELCOM SEMICONDUCTOR, INC.
–
8
4-127
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
