TC1107_13 Datasheet, PDF (1/14 Pages) Microchip Technology – 300mA CMOS LDO with Shutdown and VREF Bypass

TC1107
300mA CMOS LDO with Shutdown and V_REF Bypass
Features
• Extremely Low Supply Current (50A, Typ.)
• Very Low Dropout Voltage
• 300mA Output Current
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Power Saving Shutdown Mode
• Bypass Input for Ultra Quiet Operation
• Over Current and Over Temperature Protection
• Space-Saving MSOP Package Option
Applications
• Battery Operated Systems
• Portable Computers
• Medical Instruments
• Instrumentation
• Cellular/GSM/PHS Phones
• Linear Post-Regulators for SMPS
• Pagers
Device Selection Table
Part Number
TC1107-xxVOA
TC1107-xxVUA
Package
8-Pin SOIC
8-Pin MSOP
Junction
Temp. Range
-40°C to +125°C
-40°C to +125°C
NOTE: xx indicates output voltages
Available Output Voltages: 2.5, 2.8, 3.0, 3.3, 5.0.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
8-Pin MSOP
V_OUT ¹
8 V_IN
GND ² _TC1107VUA 7 NC
NC ³
6 NC
Bypass ⁴
5 SHDN
General Description
The TC1107 is a fixed output, high accuracy (typically
±0.5%) CMOS upgrade for older (bipolar) low dropout
regulators. Total supply current is typically 50A at full
load (20 to 60 times lower than in bipolar regulators).
TC1107 key features include ultra low noise operation
(plus optional Bypass input); very low dropout voltage
(typically 240mV at full load), and fast response to step
changes in load. Supply current is reduced to 0.05A
(typical) and V_OUT falls to zero when the shutdown
input is low.
The TC1107 incorporates both over temperature and
over current protection. The TC1107 is stable with an
output capacitor of only 1F and has a maximum
output current of 300mA.
Typical Application
V_OUT
1
+ _C1 ^VOUT
1μF
2
GND
8
V_IN
V_IN
7
NC
TC1107
3 _NC
6
NC
4
Bypass
SHDN ⁵
C_BYPASS
470pF
(Optional)
Shutdown Control
(from Power Control Logic)
8-Pin SOIC
V_OUT 1
8 V_IN
GND 2
7 NC
TC1107VOA
NC 3
6 NC
Bypass 4
5 SHDN
 2002-2012 Microchip Technology Inc.
DS21356C-page 1