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TC1301B-FSAVMF

更新时间： 2024-12-02 08:02:15
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美国微芯 - MICROCHIP /
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28页 753K
描述
DUAL LDO W/MICROCONTROLLER RESET FUNCTION, -40C to +125C, 8-DFN, TUBE

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TC1301B-FSAVMF 数据手册

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TC1301A/B  
Dual LDO with Microcontroller RESET Function  
Features  
Description  
• Dual Output LDO with Microcontroller Reset  
Monitor Functionality:  
The TC1301A/B combines two Low Dropout (LDO)  
regulators and a microcontroller RESET function into a  
single 8-pin MSOP or DFN package. Both regulator  
outputs feature low dropout voltage, 104 mV  
- VOUT1 = 1.5V to 3.3V @ 300 mA  
- VOUT2 = 1.5V to 3.3V @ 150 mA  
- VRESET = 2.20V to 3.20V  
@ 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 and detector 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.  
• Output Voltage and RESET Threshold Voltage  
Options Available (See Table 8-1)  
• Low Dropout Voltage:  
- VOUT1 = 104 mV @ 300 mA (typical)  
- VOUT2 = 150 mV @ 150 mA, (typical)  
The TC1301A/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.  
• Low Supply Current: 116 µA (typical),  
TC1301A/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  
For the TC1301A, the microcontroller RESET function  
operates independently of both VOUT1 and VOUT2. The  
input to the RESET function is connected to the VDET  
pin.The SHDN2 pin is used to control the output of  
VOUT2 only. VOUT1 will power-up and down with VIN.  
• Separate Input for RESET Detect Voltage  
(TC1301A)  
• Separate VOUT1 and VOUT2 SHDN pins  
(TC1301B)  
• RESET Output Duration: 300 ms (typical)  
• Power-Saving Shutdown Mode of Operation  
• Wake-up from SHDN: 5.3 µs (typical)  
• Small 8-pin DFN and MSOP Package Options  
• Operating Junction Temperature Range:  
- -40°C to +125°C  
In the case of the TC1301B, the detect voltage input of  
the RESET function is connected internally to VOUT1  
.
Both VOUT1 and VOUT2 have independent shutdown  
capability.  
Additional features include an overcurrent limit and  
overtemperature protection that, when combined,  
provide a robust design for all load fault conditions.  
• Overtemperature and Overcurrent Protection  
Applications  
Package Types  
• Cellular/GSM/PHS Phones  
• Battery-Operated Systems  
• Hand-Held Medical Instruments  
• Portable Computers/PDAs  
• Linear Post-Regulators for SMPS  
• Pagers  
8-Pin DFN/MSOP  
TC1301A  
DFN8  
MSOP8  
V
V
V
RESET 1  
V
8
7
6
5
1
2
3
4
RESET  
8
7
6
5
V
V
V
DET  
IN  
DET  
IN  
V
2
3
4
OUT1  
GND  
OUT1  
GND  
OUT2  
OUT2  
Related Literature  
Bypass  
SHDN2  
Bypass  
SHDN2  
• AN765, “Using Microchip’s Micropower LDOs”,  
DS00765, Microchip Technology Inc., 2002  
TC1301B  
DFN8  
MSOP8  
• AN766, “Pin-Compatible CMOS Upgrades to  
BiPolar LDOs”, DS00766, Microchip Technology  
Inc., 2002  
SHDN1  
RESET 1  
V
8
7
6
5
1
2
3
4
RESET  
8
7
6
5
SHDN1  
V
V
V
2
3
4
OUT1  
GND  
IN  
OUT1  
IN  
• AN792, “A Method to Determine How Much  
Power a SOT23 Can Dissipate in an Application”,  
DS00792, Microchip Technology Inc., 2001  
V
V
GND  
OUT2  
OUT2  
Bypass  
SHDN2  
Bypass  
SHDN2  
© 2008 Microchip Technology Inc.  
DS21798C-page 1  
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