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
LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
TC55 Series
ABSOLUTE MAXIMUM RATINGS*
Item
Input Voltage
Output Current
Output Voltage
Power Dissipation:
(T
A
≤
70
°
C)
SOT-23A-3
SOT-89
TO-92
Code
V
IN
I
OUT
V
OUT
Pd
Ratings
+12
Pd/(V
IN
– V
OUT
)
(V
SS
– 0.3) to (V
IN
+ 0.3)
240
400
440
– 40 to +85
– 65 to +150
Units
V
mA
V
mW
Operating Temperature Range
Storage Temperature Range
T
A
T
stg
°C
°C
TC55RP50 ELECTRICAL CHARACTERISTICS:
V
OUT
(S) = 5.0V, T
A
= 25°C unless otherwise specified (see REMARKS).
Symbol
V
OUT
(A)
I
OUT
max
∆V
OUT
V
dif
I
SS
V
OUT
(A)·100
∆V
IN
·V
OUT
(S)
V
IN
∆V
OUT
(A)·10
6
V
OUT
(S)·∆T
A
REMARKS:
Parameter
Output Voltage
Maximum Output Current
Load Regulation
I/O Voltage Difference
Current Consumption
Voltage Regulation
Input Voltage
Temperature Coefficient
of Output Voltage
Long Term Stability
Test Conditions
I
OUT
= 40mA
V
IN
= 6.0V
V
IN
= 6.0V, V
OUT
(A)
≥
4.5V
V
IN
= 6.0 V, 1 mA
≤
I
OUT
≤
100mA
I
OUT
= 100mA
I
OUT
= 200 mA
V
IN
= 6.0V
I
OUT
= 40mA
6.0V
≤
V
IN
≤
10.0V
I
OUT
= 40mA
– 40°C
≤
T
A
≤
85°C
T
A
= 125°C, 1000 Hours
Min
—
4.90
250
—
—
—
—
—
—
—
—
Typ
—
5.0
—
40
120
380
1.1
0.2
—
±100
0.5
Max
—
5.10
—
80
300
600
3.0
0.3
10.0
—
—
Unit
V
mA
mV
mV
µA
%/V
V
ppm/°C
%
V
OUT
(S): Preset value of Output voltage
V
OUT
(A): Actual value of Output voltage
V
dif
:
Definition of I/O voltage difference = {V
IN
1 – V
OUT
(A)}
V
OUT
(A): Output Voltage when I
OUT
is fixed and V
IN
= V
OUT
(S) + 1.0V
V
IN
1:
Input Voltage when the output voltage is 98% V
OUT
(A)
TC55RP40 ELECTRICAL CHARACTERISTICS:
V
OUT
(S) = 5.0V, T
A
= 25°C unless otherwise specified (see REMARKS).
Symbol
V
OUT
(A)
I
OUT
max
∆V
OUT
V
dif
I
SS
∆V
OUT
(A)·100
∆V
IN
·V
OUT
(S)
V
IN
∆V
OUT
(A)
V
OUT
(S)·∆T
A
Parameter
Output Voltage
Maximum Output Current
Load Regulation
I/O Voltage Difference
Current Consumption
Voltage Regulation
Input Voltage
Temperature Coefficient
of Output Voltage
Long Term Stability
Test Conditions
I
OUT
= 40mA
V
IN
= 5.0V
V
IN
= 5.0V, V
OUT
(A)
≥
3.6V
V
IN
= 5.0 V, 1 mA
≤
I
OUT
≤
100mA
I
OUT
= 100mA
I
OUT
= 200mA
V
IN
= 5.0V
I
OUT
= 40mA
5.0V
≤
V
IN
≤
10.0V
I
OUT
= 40mA
– 40°C
≤
T
A
≤
85°C
T
A
= 125°C, 1000 Hours
Min
—
3.92
200
—
—
—
—
—
—
—
—
Typ
—
4.0
—
45
170
400
1.0
0.2
—
±100
0.5
Max
—
4.08
—
90
330
630
2.9
0.3
10.0
—
—
Unit
V
mA
mV
mV
µA
%/V
V
ppm/°C
%
4-128
TELCOM SEMICONDUCTOR, INC.
LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
TC55 Series
TC55RP30 ELECTRICAL CHARACTERISTICS:
V
OUT
(S) = 5.0V, T
A
= 25°C unless otherwise specified (see REMARKS).
Symbol
V
OUT
(A)
I
OUT
max
∆V
OUT
V
dif
I
SS
V
OUT
(A)·100
∆V
IN
·V
OUT
(S)
V
IN
∆V
OUT
(A)·10
6
∆T
A
·V
OUT
(S)
1
Parameter
Output Voltage
Maximum Output Current
Load Regulation
I/O Voltage Difference
Current Consumption
Voltage Regulation
Input Voltage
Temperature Coefficient
of Output Voltage
Long Term Stability
Test Conditions
I
OUT
= 40mA
V
IN
= 4.0V
V
IN
= 4.0V, V
OUT
(A)
≥
2.7V
V
IN
= 4.0V, 1 mA
≤
I
OUT
≤
80mA
I
OUT
= 80mA
I
OUT
= 160mA
V
IN
= 4.0V
I
OUT
= 40mA
4.0V
≤
V
IN
≤
10.0V
I
OUT
= 40mA
– 40°C
≤
T
A
≤
85°C
T
A
= 125°C, 1000 Hours
Min
—
2.94
150
—
—
—
—
—
—
—
—
Typ
—
3.0
—
45
180
400
0.9
0.2
—
±100
0.5
Max
—
3.06
—
90
360
700
2.8
0.3
10.0
—
—
Unit
V
mA
mV
mV
µA
%/V
V
ppm/°C
%
2
3
4
5
6
7
*Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those
listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating
Conditions for extended periods may affect device reliability.
MARKING
SOT-23A-3
SOT-89-3
TO-92-3
x
x
1 2 3 4
5 6 7 8
9 10 11 12
represents first voltage digit
2 3 4 5 6
3
ex: 3.xV =
kkkk
represents first decimal place voltage (x.0 - x.9)
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