TC2185-50VCTTR Datasheet, PDF (1/20 Pages) Microchip Technology – 50 mA, 100 mA, 150 mA CMOS LDOs with

TC2014/2015/2185
50 mA, 100 mA, 150 mA CMOS LDOs with
Shutdown and Reference Bypass
Features
• Low Supply Current: 80 µA (Max)
• Low Dropout Voltage: 140 mV (Typ.) @ 150 mA
• High-Output Voltage Accuracy: ±0.4% (Typ.)
• Standard or Custom Output Voltages
• Power-Saving Shutdown Mode
• Reference Bypass Input for Ultra Low-Noise
Operation
• Fast Shutdown Response Time: 60 µsec (Typ.)
• Overcurrent and Overtemperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin-Compatible Upgrades for Bipolar Regulators
• Wide Operating Temperature Range:
-40°C to +125°C
• 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/GSM/PHS Phones
• Linear Post-Regulator for SMPS
• Pagers
Related Literature
• Application Notes: AN765, AN766, AN776 and
AN792
Package Type
5-Pin SOT-23A
V_OUT
Bypass
5
4
TC2014
TC2015
TC2185
1
2
3
V_{IN GND SHDN}
General Description
The TC2014, TC2015 and TC2185 are high-accuracy
(typically ±0.4%) CMOS upgrades for bipolar Low
Drop-out Regulators (LDOs), such as the LP2980.
Total supply current is typically 55 µA; 20 to 60 times
lower than in bipolar regulators.
The key features of the device include low noise oper-
ation (plus bypass reference), low dropout voltage
– typically 45 mV for the TC2014, 90 mV for the
TC2015, and 140 mV for the TC2185, at full load – and
fast response to step changes in load. Supply current
is reduced to 0.5 µA (max) and V_OUT falls to zero when
the shutdown input is low. These devices also
incorporate overcurrent and overtemperature
protection.
The TC2014, TC2015 and TC2185 are stable with an
output capacitor of 1 µF and have maximum output
currents of 50 mA, 100 mA and 150 mA, respectively.
For higher-output current versions, see the TC1107
(DS21356), TC1108 (DS21357) and TC1173
(DS21362) (I_OUT = 300 mA) data sheets.
Typical Application
1
V_IN
V_IN
+
1 µF
V_OUT ⁵
V_OUT
+
1 µF
2
TC2014
GND _TC2015
TC2185
3
SHDN
Bypass ⁴
Shutdown Control
(from Power Control Logic)
0.01 µF
Reference
Bypass Cap
(Optional)
© 2006 Microchip Technology Inc.
DS21662E-page 1