TC55 Series
1 A LOW DROPOUT POSITIVE VOLTAGE REGULATOR
FEATURES
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Extremely Low Power Consumption |
1.1 A (Typ.) |
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Very Low Dropout Voltage .... |
120mV typ at 100mA |
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380mV typ at 200mA |
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Wide Input Voltage Range ..................... |
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10V (max.) |
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High Output Current .............. |
250mA (VOUT = 5.0V) |
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High Accuracy Output Voltage ........................ |
± 2% |
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(± 1% Semicustom Version) |
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Wide Output Voltage Range .................... |
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1.1V-6.0V |
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Low Power Consumption ................... |
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1.1 A (Typ.) |
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Excellent Line Regulation .................. |
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0.2%/V (Typ.) |
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Package Options .. 3-Pin SOT-23A, SOT-89, TO-92 |
■Short Circuit Protection
■Custom Voltages Available from 1.1V to 6.0V in 0.1V Steps for a 2%, and 2.0V to 6.0V for a 1% Tolerance
APPLICATIONS
■Battery-Powered Devices
■Cameras and Portable Video Equipment
■Pagers and Cellular Phones
■Solar-Powered Instruments
■Consumer Products
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The TC55 Series is a family of CMOS low dropout positive voltage regulators which can source up to 250mA of current. The extremely low operating current (1.1 A typical) makes this part the ideal choice for battery operated applications and eliminates the need for an additional shutdown mode. The power consumption of the TC55 is 1000 times lower than in bipolar regulators, significantly extending battery life.
The maximum input voltage of 10V combined with the wide output voltage range (1.1V to 6.0V, in 100mV increments) makes this device suitable for a large variety of applications. Other key features include low dropout voltage (380mV typical at 200mA) and excellent line regulation (0.2%/V). The low voltage differential (dropout voltage) also extends battery operating lifetime and permits high currents in small packages when operated with minimum VIN – VOUT differentials.
The circuit also incorporates short-circuit protection to ensure maximum reliability. The TC55 is stable with an output capacitor (ceramic or tantalum) of only 1 F and is available in a tiny SOT-23A package for space critical applications, as well as in a 3-pin SOT-89 and a 3-pin TO92 package.
VIN |
VOUT |
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Short-circuit |
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Protection |
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– |
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Voltage |
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Reference |
GND
PIN CONFIGURATION
3-Pin SOT-23A |
3-Pin SOT-89 |
3-Pin TO-92 |
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VIN |
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TC55 |
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TC55 |
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TC55 |
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GND |
VOUT |
GND |
VIN |
VOUT |
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IN |
OUT |
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*SOT-23A-3 is equivalent to EIAJ SC-59 |
GND V |
V |
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ORDERING INFORMATION
PART CODE TC55 RP XX X X X XX XXX
Output Voltage: |
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Ex: 20 = 2.0V; 60 = 6.0V |
1.0% Tol. |
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Ex: 11 = 1.1V; 60 = 6.0V |
2.0% Tol. |
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: 3-Pin SOT-23A (equivalent to EIAJ SC-59)
MB: 3-Pin SOT-89
ZB: 3-Pin TO-92
Taping Direction:
TR or 713: Standard Taping
RT or 723: Reverse Taping
No suffix: TO-92 Bulk
TC55-24 9/30/99 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.
1 A LOW DROPOUT POSITIVE VOLTAGE REGULATOR
TC55 Series
ABSOLUTE MAXIMUM RATINGS*
Item |
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Code |
Ratings |
Units |
Input Voltage |
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VIN |
+12 |
V |
Output Current |
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IOUT |
Pd/(VIN – VOUT) |
mA |
Output Voltage |
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VOUT |
(VSS – 0.3) to (VIN + 0.3) |
V |
Power Dissipation: |
3-Pin SOT-23A |
Pd |
240 |
mW |
(TA ≤ 70° C) |
3-Pin SOT-89 |
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400 |
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3-Pin TO-92 |
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440 |
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Operating Temperature Range |
TA |
– 40 to +85 |
° C |
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Storage Temperature Range |
Tstg |
– 65 to +150 |
° C |
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TC55RP50 ELECTRICAL CHARACTERISTICS: VOUT(S) = 5.0V, TA = 25° C unless otherwise specified (see REMARKS).
Symbol |
Parameter |
Test Conditions |
Min |
Typ |
Max |
Unit |
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VOUT(A) |
Output Voltage |
IOUT = 40mA |
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V |
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VIN = 6.0V |
4.90 |
5.0 |
5.10 |
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IOUTmax |
Maximum Output Current |
VIN = 6.0V, VOUT(A) ≥ 4.5V |
250 |
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mA |
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∆ VOUT |
Load Regulation |
VIN = 6.0 V, 1mA ≤ IOUT ≤ 100mA |
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40 |
80 |
mV |
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Vdif |
I/O Voltage Difference |
IOUT = 100mA |
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120 |
300 |
mV |
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IOUT = 200mA |
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380 |
600 |
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ISS |
Current Consumption |
VIN = 6.0V |
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1.1 |
3.0 |
A |
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VOUT(A)·100 |
Voltage Regulation |
IOUT = 40mA |
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0.2 |
0.3 |
%/V |
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∆ VIN·VOUT(S) |
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6.0V ≤ VIN ≤ 10.0V |
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VIN |
Input Voltage |
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10.0 |
V |
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6 |
Temperature Coefficient |
IOUT = 40mA |
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± 100 |
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ppm/ ° C |
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∆ VOUT(A)·10 |
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VOUT(S)·∆ TA |
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of Output Voltage |
– 40° C ≤ TA ≤ 85° C |
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Long Term Stability |
TA = 125° C, 1000 Hours |
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0.5 |
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% |
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REMARKS: |
VOUT(S): Preset value of Output voltage |
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VOUT(A): Actual value of Output voltage |
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Vdif: |
Definition of I/O voltage difference = {VIN1 – VOUT(A)} |
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VOUT(A): Output Voltage when IOUT is fixed and VIN = VOUT(S) + 1.0V |
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VIN1: |
Input Voltage when the output voltage is 98% VOUT(A) |
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TC55RP40 ELECTRICAL CHARACTERISTICS: VOUT(S) = 4.0V, TA = 25° C unless otherwise specified (see REMARKS).
Symbol |
Parameter |
Test Conditions |
Min |
Typ |
Max |
Unit |
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VOUT(A) |
Output Voltage |
IOUT = 40mA |
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V |
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VIN = 5.0V |
3.92 |
4.0 |
4.08 |
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IOUTmax |
Maximum Output Current |
VIN = 5.0V, VOUT(A) ≥ 3.6V |
200 |
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mA |
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∆ VOUT |
Load Regulation |
VIN = 5.0V, 1mA ≤ IOUT ≤ 100mA |
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45 |
90 |
mV |
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Vdif |
I/O Voltage Difference |
IOUT = 100mA |
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170 |
330 |
mV |
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IOUT = 200mA |
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400 |
630 |
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ISS |
Current Consumption |
VIN = 5.0V |
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1.0 |
2.9 |
A |
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∆ VOUT(A)·100 |
Voltage Regulation |
IOUT = 40mA |
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0.2 |
0.3 |
%/V |
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∆ VIN·VOUT(S) |
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5.0V ≤ VIN ≤ 10.0V |
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VIN |
Input Voltage |
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10.0 |
V |
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∆ VOUT(A) |
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Temperature Coefficient |
IOUT = 40mA |
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± 100 |
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ppm/ ° C |
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VOUT(S)·∆ TA |
of Output Voltage |
– 40° C ≤ TA ≤ 85° C |
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Long Term Stability |
TA = 125° C, 1000 Hours |
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0.5 |
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% |
TC55-24 9/30/99 |
2 |
1 A LOW DROPOUT POSITIVE VOLTAGE REGULATOR
TC55 Series
TC55RP30 ELECTRICAL CHARACTERISTICS: VOUT(S) = 3.0V, TA = 25° C unless otherwise specified (see REMARKS).
Symbol |
Parameter |
Test Conditions |
Min |
Typ |
Max |
Unit |
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VOUT(A) |
Output Voltage |
IOUT = 40mA |
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V |
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VIN = 4.0V |
2.94 |
3.0 |
3.06 |
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IOUTmax |
Maximum Output Current |
VIN = 4.0V, VOUT(A) ≥ 2.7V |
150 |
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mA |
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∆ VOUT |
Load Regulation |
VIN = 4.0V, 1mA ≤ IOUT ≤ 80mA |
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45 |
90 |
mV |
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Vdif |
I/O Voltage Difference |
IOUT = 80mA |
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180 |
360 |
mV |
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IOUT = 160mA |
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400 |
700 |
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ISS |
Current Consumption |
VIN = 4.0V |
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0.9 |
2.8 |
A |
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VOUT(A)·100 |
Voltage Regulation |
IOUT = 40mA |
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0.2 |
0.3 |
%/V |
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∆ VIN·VOUT(S) |
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4.0V ≤ VIN ≤ 10.0V |
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VIN |
Input Voltage |
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10.0 |
V |
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6 |
Temperature Coefficient |
IOUT = 40mA |
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± 100 |
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ppm/ ° C |
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∆ VOUT(A)·10 |
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∆ TA·VOUT(S) |
of Output Voltage |
– 40° C ≤ TA ≤ 85° C |
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Long Term Stability |
TA = 125° C, 1000 Hours |
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0.5 |
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% |
MARKING
3-Pin SOT-23A |
3-Pin SOT-89 |
TC55-24 9/30/99 |
3 |