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TC1107 Schematic ( PDF Datasheet ) - Microchip

Teilenummer TC1107
Beschreibung 300mA CMOS LDO with Shutdown and VREF Bypass
Hersteller Microchip
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Gesamt 12 Seiten
TC1107 Datasheet, Funktion
TC1107
300mA CMOS LDO with Shutdown and VREF Bypass
Features
• Extremely Low Supply Current (50µA, 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
Package
Junction
Temp. Range
TC1107-xxVOA 8-Pin SOIC -40°C to +125°C
TC1107-xxVUA 8-Pin MSOP -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
VOUT 1
8 VIN
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 50µA 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 0.05µA
(typical) and VOUT 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 1µF and has a maximum
output current of 300mA.
Typical Application
VOUT
1
+ C1 VOUT
1µF
2
GND
8
VIN
VIN
7
NC
TC1107
3 NC
6
NC
4
Bypass
SHDN 5
CBYPASS
470pF
(Optional)
Shutdown Control
(from Power Control Logic)
8-Pin SOIC
VOUT 1
8 VIN
GND 2
7 NC
TC1107VOA
NC 3
6 NC
Bypass 4
5 SHDN
© 2002 Microchip Technology Inc.
DS21356B-page 1






TC1107 Datasheet, Funktion
TC1107
5.0 TYPICAL CHARACTERISTICS
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
0.012
Line Regulation
0.010
0.008
0.006
0.004
0.002
0.000
-0.002
-0.004
-40° -20° 0° 20° 40° 60° 80° 100° 120°
TEMPERATURE (°C)
Output Noise
10.0
RLOAD = 50
COUT = 1µF
1.0
0.1
0.0
0.01
0.01 1
10 100
FREQUENCY (kHz)
1000
Load Regulation
2.00
1.80
1.60
1 to 300mA
1.40
1.20
1.00
0.80
0.60 1 to 100mA
0.40 1 to 50mA
0.20
0.00
-40° -20° 0° 20° 40° 60° 80° 100° 120°
TEMPERATURE (°C)
100.0
90.0
Supply Current
80.0
70.0
60.0
50.0
40.0
-40° -20° 0° 20° 40° 60° 80° 100° 120°
TEMPERATURE (°C)
Dropout Voltage vs. Load Current
0.40
125°C
0.35
85°C
0.30
70°C
0.25
25°C
0.20
0.15
0°C
0.10
0.05
-40°C
0.00
0
50 100 150 200 250 300
LOAD CURRENT (mA)
3.075
VOUT vs. Temperature
VIN = 4V
ILOAD = 100µA
CLOAD = 3.3µF
3.025
2.975
2.925
-40° -20° 0° 20° 40° 60° 80° 100° 120°
TEMPERATURE (°C)
Power Supply Rejection Ratio
-30dB
-35dB
-40dB
VOUT = 5V
RLOAD = 50
VINAC = 50mV p-p
-45dB
-50dB
-55dB
-60dB
COUT = 1µF
-65dB
-70dB
-75dB
-80dB
10 100 1K 10K 100K 1M
FREQUENCY (Hz)
DS21356B-page 6
© 2002 Microchip Technology Inc.

6 Page









TC1107 pdf, datenblatt
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05/01/02
DS21356B-page 12
*DS21356B*
© 2002 Microchip Technology Inc.

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