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TC2055-1.8VCTTR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
© 2009 Microchip Technology Inc. DS21663D-page 1
TC2054/2055/2186
Features
• Low Supply Current (55 µA Typical) for Longer
Battery Life
• Low Dropout Voltage: 140 mV (Typical) @
150 mA
• High Output Voltage Accuracy: ±0.4% (Typical)
• Standard or Custom Output Voltages
• Power-Saving Shutdown Mode
• ERROR
Output Can Be Used as a Low Battery
Detector or Processor Reset Generator
• Fast Shutdown Reponse Time: 60 µs (Typical)
• Overcurrent and Overtemperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
• Standard Output Voltage Options:
- 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V,
3.3V, 5.0V
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular / GSMS / PHS Phones
• Pagers
Typical Application
General Description
The TC2054, TC2055 and TC2186 are high accuracy
(typically ±0.4%) CMOS upgrades for older (bipolar)
low dropout regulators. Designed specifically for
battery-operated systems, the devices’ total supply
current is typically 55 µA at full load (20 to 60 times
lower than in bipolar regulators).
The devices’ key features include low noise operation,
low dropout voltage – typically 45 mV (TC2054); 90 mV
(TC2055); and 140 mV (TC2186) at full load - and fast
response to step changes in load. An error output
(ERROR
) is asserted when the devices are
out-of-regulation (due to a low input voltage or
excessive output current). Supply current is reduced to
0.5 µA (maximum) and both V
OUT
and ERROR are
disabled when the shutdown input is low. The devices
also incorporate overcurrent and overtemperature
protection.
The TC2054, TC2055 and TC2186 are stable with a
low esr ceramic output capacitor of 1 µF and have a
maximum output current of 50 mA, 100 mA and
150 mA, respectively. This LDO Family also features a
fast response time (60 µs typically) when released from
shutdown.
Package Type
1µF
Shutdown Control
(from Power Control Logic)
TC2054
TC2055
TC2186
V
IN
1
2
34
5
V
IN
V
OUT
ERROR
SHDN
GND
1M
V
OUT
ERROR
1µF
TC2054
TC2055
TC2186
1
3
4
5
2
ERROR
GND
V
OUT
V
IN
SHDN
5-Pin SOT-23A
Top View
50 mA, 100 mA, and 150 mA CMOS LDOs
with Shutdown and Error Output
TC2054/2055/2186
DS21663D-page 2 © 2009 Microchip Technology Inc.
NOTES:
© 2009 Microchip Technology Inc. DS21663D-page 3
TC2054/2055/2186
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage .........................................................6.5V
Output Voltage ...............................(-0.3) to (V
IN
+ 0.3)
Operating Temperature.................. -40°C < T
J
< 125°C
Storage Temperature .........................-65°C to +150°C
Maximum Voltage on Any Pin ........V
IN
+0.3V to -0.3V
† Notice: 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 operation sections of the
specifications is not implied. Exposure to Absolute
Maximum Rating conditions for extended periods my
affect device reliability.
ELECTRICAL SPECIFICATIONS
Electrical Specifications: Unless otherwise noted, V
IN
= V
R
+ 1V, I
L
= 100 µA, C
L
= 3.3 µF, SHDN > V
IH
, T
A
= +25°C.
BOLDFACE type specifications apply for junction temperature of -40°C to +125°C.
Parameter Sym Min Typ Max Units Conditions
Input Operating Voltage V
IN
2.7 — 6.0 V Note 1
Maximum Output Current I
OUT
MAX
50 — — mA TC2054
100 — — TC2055
150 — — TC2186
Output Voltage V
OUT
V
R
- 2.0% V
R
± 0.4% V
R
+ 2.0% V Note 2
V
OUT
Temperature
Coefficient
TCV
OUT
— 20 — ppm/°C Note 3
—40—
Line Regulation ΔV
OUT
/
ΔV
IN
— 0.05 0.5 % (V
R
+ 1V) < V
IN
< 6V
Load Regulation ΔV
OUT
/
V
OUT
-1.0 0.33 +1.0 % TC2054;TC2055 I
L
= 0.1 mA to IOUT
MAX
-2.0 0.43 +2.0 TC2186 I
L
= 0.1 mA to IOUT
MAX
Note 6
Dropout Voltage, Note 7 V
IN
– V
OUT
—2—mV I
L
= 100 µA
—4570 I
L
= 50 mA
— 90 140 TC2015; TC2185 I
L
= 100 mA
— 140 210 TC2185 I
L
= 150 mA
Note 7
Supply Current I
IN
— 55 80 µA SHDN = V
IH
, I
L
=0
Shutdown Supply Current I
INSD
— 0.05 0.5 µA SHDN = 0V
Power Supply Rejection
Ratio
PSRR — 50 — dB F
RE
≤ 100 kHz
Output Short Circuit Current I
OUT
SC
160 300 — mA V
OUT
= 0V
Note 1: The minimum V
IN
has to meet two conditions: V
IN
= 2.7V and V
IN
= V
R
+ V
DROPOUT
.
2: V
R
is the regulator output voltage setting. For example: V
R
= 1.8V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V.
3: TCV
OUT
=
4:
5:
6: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested
over a load range from 1.0 mA to the maximum specified output current. Changes in output voltage due to heating
effects are covered by the thermal regulation specification.
7: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal
value at a 1V differential.
8: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied,
excluding load or line regulation effects. Specifications are for a current pulse equal to I
MAX
at V
IN
= 6V for T = 10 ms.
9: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction tem-
perature and the thermal resistance from junction-to-air (i.e. T
A
, T
J
, θ
JA
).
10: Hysteresis voltage is referenced by V
R
.
11: Time required for V
OUT
to reach 95% of V
R
(output voltage setting), after V
SHDN
is switched from 0 to V
IN
.
V
OUTMAX
V
OUTMIN
–()10
6
×
V
OUT
ΔT×
-----------------------------------------------------------------------------------------
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TC2055-1.8VCTTR

Mfr. #:
Buy TC2055-1.8VCTTR
Manufacturer:
Microchip Technology
Description:
LDO Voltage Regulators .1mA w/Shtdn & Error 1.8V
Lifecycle:
New from this manufacturer.
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