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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1302B Datasheet

LOW QUIESCENT CURRENT DUAL OUTPUT LDO

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TC1302B pdf
TC1302A/B
Low Quiescent Current Dual Output LDO
Features
• Dual Output LDO:
- VOUT1 = 1.5V to 3.3V @ 300 mA
- VOUT2 = 1.5V to 3.3V @ 150 mA
• Output Voltage (See Table 8-1)
www.DataSheet4U.com• Low Dropout Voltage:
- VOUT1 = 104 mV @ 300 mA Typical
- VOUT2 = 150 mV @ 150 mA Typical
• Low Supply Current: 116 µA Typical
TC1302A/B with both output voltages available
• Reference Bypass Input for Low-Noise Operation
• Both Output Voltages Stable with a Minimum of
1 µF Ceramic Output Capacitor
• Separate VOUT1 and VOUT2 SHDN pins
(TC1302B)
• Power-Saving Shutdown Mode of Operation
• Wake-up from SHDN: 5.3 µs. Typical
• Small 8-pin DFN or MSOP Package Options
• Operating Junction Temperature Range:
- -40°C to +125°C
• Overtemperature and Overcurrent Protection
Applications
• Cellular/GSM/PHS Phones
• Battery-Operated Systems
• Hand-Held Medical Instruments
• Portable Computers/PDAs
• Linear Post-Regulators for SMPS
• Pagers
Related Literature
• AN765, “Using Microchip’s Micropower LDOs”,
DS00765, Microchip Technology Inc., 2002
• AN766, “Pin-Compatible CMOS Upgrades to
BiPolar LDOs”, DS00766,
Microchip Technology Inc., 2002
• AN792, “A Method to Determine How Much
Power a SOT23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
Description
The TC1302A/B combines two Low Dropout (LDO)
regulators into a single 8-pin MSOP or DFN package.
Both regulator outputs feature low dropout voltage,
104 mV @ 300 mA for VOUT1, 150 mV @ 150 mA for
VOUT2, low quiescent current consumption, 58 µA each
and a typical regulation accuracy of 0.5%. Several
fixed-output voltage combinations are available. A
reference bypass pin is available to further reduce
output noise and improve the power supply rejection
ratio of both LDOs.
The TC1302A/B is stable over all line and load
conditions, with a minimum of 1 µF of ceramic output
capacitance, and utilizes a unique compensation
scheme to provide fast dynamic response to sudden
line voltage and load current changes.
Additional features include an overcurrent limit and
overtemperature protection that combine to provide a
robust design for all load fault conditions.
Package Types
8-Pin DFN/MSOP
DFN8
TC1302A
MSOP8
NC 1
VOUT1 2
GND 3
Bypass 4
8 NC
NC 1
7 VIN
VOUT1 2
6 VOUT2 GND 3
5 SHDN2 Bypass 4
8 NC
7 VIN
6 VOUT2
5 SHDN2
DFN8
TC1302B
MSOP8
NC 1
VOUT1 2
GND 3
Bypass 4
8 SHDN1 NC 1
7 VIN
6 VOUT2
VOUT1 2
GND 3
5 SHDN2 Bypass 4
8 SHDN1
7 VIN
6 VOUT2
5 SHDN2
© 2005 Microchip Technology Inc.
DS21333B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1302B Datasheet

LOW QUIESCENT CURRENT DUAL OUTPUT LDO

No Preview Available !

TC1302B pdf
TC1302A/B
Functional Block Diagrams
TC1302A
VIN
LDO #1
300 mA
SHDN2
www.DataSheet4U.com
GND
Bypass
LDO #2
150 mA
Bandgap
Reference
1.2V
VOUT1
VIN
SHDN1
VOUT2
SHDN2
GND
Bypass
TC1302B
LDO #1
300 mA
LDO #2
150 mA
Bandgap
Reference
1.2V
VOUT1
VOUT2
Typical Application Circuits
2.8V @ 300 mA
COUT1
1 µF Ceramic
X5R
CBYPASS(Note)
10 nF Ceramic
TC1302A
1 NC
8
NC
2 VOUT1
3 GND
VIN 7
VOUT2 6 2.6V @ 150 mA
BATTERY
CIN
1 µF
4 Bypass SHDN2 5
COUT2
1 µF Ceramic
X5R
2.7V
to
4.2V
ON/OFF Control VOUT2
2.8V @ 300 mA
COUT1
1 µF Ceramic
X5R
ON/OFF Control VOUT1
TC1302B
1
NC
SHDN1 8
2 VOUT1
3 GND
VIN 7
VOUT2 6
2.6V @ 150 mA
BATTERY
CIN
1 µF
4 Bypass SHDN2 5
COUT2
1 µF Ceramic
X5R
2.7V
to
4.2V
Note: CBYPASS is optional
ON/OFF Control VOUT2
DS21333B-page 2
© 2005 Microchip Technology Inc.


Part Number TC1302B
Description LOW QUIESCENT CURRENT DUAL OUTPUT LDO
Maker Microchip Technology
Total Page 26 Pages
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