TC1302A/B
Low Quiescent Current Dual Output LDO
Features
鈥?Dual Output LDO:
- V
OUT1
= 1.5V to 3.3V @ 300 mA
- V
OUT2
= 1.5V to 3.3V @ 150 mA
鈥?Output Voltage (See Table 8-1)
鈥?Low Dropout Voltage:
- V
OUT1
= 104 mV @ 300 mA Typical
- V
OUT2
= 150 mV @ 150 mA Typical
鈥?Low Supply Current: 116 碌A Typical
TC1302A/B with both output voltages available
鈥?Reference Bypass Input for Low-Noise Operation
鈥?Both Output Voltages Stable with a Minimum of
1 碌F Ceramic Output Capacitor
鈥?Separate V
OUT1
and V
OUT2
SHDN pins
(TC1302B)
鈥?Power-Saving Shutdown Mode of Operation
鈥?Wake-up from SHDN: 5.3 碌s. Typical
鈥?Small 8-pin DFN or MSOP Package Options
鈥?Operating Junction Temperature Range:
- -40掳C to +125掳C
鈥?Overtemperature and Overcurrent Protection
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 V
OUT1
, 150 mV @ 150 mA for
V
OUT2
, low quiescent current consumption, 58 碌A 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 碌F 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
NC 1
V
OUT1
2
GND 3
Bypass 4
8 NC
7 V
IN
6 V
OUT2
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Cellular/GSM/PHS Phones
Battery-Operated Systems
Hand-Held Medical Instruments
Portable Computers/PDAs
Linear Post-Regulators for SMPS
Pagers
TC1302A
NC 1
V
OUT1
2
GND 3
MSOP8
8 NC
7 V
IN
6 V
OUT2
5 SHDN2
5 SHDN2 Bypass 4
Related Literature
鈥?AN765, 鈥淯sing Microchip鈥檚 Micropower LDOs鈥?
DS00765, Microchip Technology Inc., 2002
鈥?AN766, 鈥淧in-Compatible CMOS Upgrades to
BiPolar LDOs鈥? DS00766,
Microchip Technology Inc., 2002
鈥?AN792, 鈥淎 Method to Determine How Much
Power a SOT23 Can Dissipate in an Application鈥?
DS00792, Microchip Technology Inc., 2001
NC 1
V
OUT1
2
GND 3
Bypass 4
DFN8
TC1302B
NC 1
8 SHDN1
V
OUT1
2
7 V
IN
6 V
OUT2
GND 3
5 SHDN2 Bypass 4
MSOP8
8 SHDN1
7 V
IN
6 V
OUT2
5 SHDN2
漏
2005 Microchip Technology Inc.
DS21333B-page 1
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