4-127
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC55 Series
FEATURES
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Very Low Dropout Voltage.... 120mV typ at 100mA
380mV typ at 200mA
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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
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I
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SOT-89-3
TO-92
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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.
APPLICATIONS
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Battery-Powered Devices
Cameras and Portable Video Equipment
Pagers and Cellular Phones
Solar-Powered Instruments
Consumer Products
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 1.1
μ
A 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.
LOW DROPOUT POSITIVE VOLTAGE REGULATOR
Output Voltage:
Ex: 21= 2.1V; 60 = 6.0V
Extra Feature Code:
Fixed: 0
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
PART CODE
TC55 RP XX X X X XX XXX
ORDERING INFORMATION
PIN CONFIGURATIONS
FUNCTIONAL BLOCK DIAGRAM
VIN
VOUT
GND
+
–
Short-circuit
Protection
Voltage
Reference
TC55-20 11/8/96
1
3
2
VIN
VIN
V
VOUT
VOUT
V
G
GND
GND
TC55
TC55
TC55
1
1
2
3
3
2
*SOT-23A-3
SOT-89-3
TO-92
*SOT-23A-3 is equivalent to EIAJ (SC-59)