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TC1301B-FHAVUA 数据表(PDF) 1 Page - Microchip Technology

部件名 TC1301B-FHAVUA
功能描述  Dual LDO with Microcontroller RESET Function
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

TC1301B-FHAVUA 数据表(HTML) 1 Page - Microchip Technology

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© 2005 Microchip Technology Inc.
DS21798B-page 1
TC1301A/B
Features
• Dual Output LDO with Microcontroller Reset
Monitor Functionality:
-VOUT1 = 1.5V to 3.3V @ 300 mA
-VOUT2 = 1.5V to 3.3V @ 150 mA
-VRESET = 2.20V to 3.20V
• 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
• 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
• 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
• 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 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
@300 mA for VOUT1, 150mV @ 150mA 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.
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.
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.
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.
Package Types
8-Pin DFN/MSOP
RESET
SHDN2
Bypass
GND
VDET
1
2
3
45
6
7
8
VOUT2
VIN
1
2
3
4
5
6
7
8
VOUT1
TC1301A
RESET
SHDN2
Bypass
GND
VDET
VOUT2
VIN
VOUT1
DFN8
MSOP8
RESET
SHDN2
Bypass
GND
SHDN1
1
2
3
45
6
7
8
VOUT2
VIN
1
2
3
4
5
6
7
8
VOUT1
TC1301B
RESET
SHDN2
Bypass
GND
SHDN1
VOUT2
VIN
VOUT1
DFN8
MSOP8
Dual LDO with Microcontroller RESET Function


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