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PDF TC1301B Data sheet ( Hoja de datos )
| Número de pieza | TC1301B | |
| Descripción | Dual LDO | |
| Fabricantes | Microchip Technology | |
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TC1301A/B
Dual LDO with Microcontroller RESET Function
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
www.DataSheet4U.com - 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, 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.
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
DFN8
8-Pin DFN/MSOP
TC1301A
MSOP8
RESET 1
VOUT1 2
GND 3
Bypass 4
8 VDET
7 VIN
6 VOUT2
5 SHDN2
RESET 1
VOUT1 2
GND 3
Bypass 4
8 VDET
7 VIN
6 VOUT2
5 SHDN2
DFN8
TC1301B
MSOP8
RESET 1
VOUT1 2
GND 3
Bypass 4
8 SHDN1
7 VIN
6 VOUT2
5 SHDN2
RESET 1
VOUT1 2
GND 3
Bypass 4
8 SHDN1
7 VIN
6 VOUT2
5 SHDN2
© 2005 Microchip Technology Inc.
DS21798B-page 1
1 page  
TC1301A/B
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits are specified for: VIN = +2.7V to +6.0V.
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Operating Junction Temperature
Range
Storage Temperature Range
Maximum Junction Temperature
Thermal Package Resistances
Thermal Resistance, MSOP8
Thermal Resistance, DFN8
www.DataSheet4U.com
TA -40 — +125 °C Steady State
TA -65 — +150 °C
TJ — — +150 °C Transient
θJA — 208 — °C/W Typical 4-Layer Board
θJA — 41 — °C/W Typical 4-Layer Board with Vias
© 2005 Microchip Technology Inc.
DS21798B-page 5
5 Page 
TC1301A/B
Note: Unless otherwise indicated, VIN = VR +1V, IOUT1 = IOUT2 = 100 µA, CIN = 4.7 µF, COUT1 = COUT2 = 1 µF (X5R or X7R),
CBYPASS = 0 pF, SHDN1 = SHDN2 > VIH. For the TC1301A, VDET = VOUT1, RESET = OPEN, TA = +25°C.
www.DataSheet4U.com
0.35
0.30
VR1 = 2.8V,VR2 = 2.6V
VDET = VTH - 20 mV
IOL = 3.2 mA
0.25
0.20
0.15
0.10
IOL = 1.2 mA
0.05
0.00
-40 -25 -10 5 20 35 50 65 80 95 110 125
Junction Temperature (°C)
FIGURE 2-31:
RESET Output Voltage Low
vs. Junction Temperature.
4.4
4.2
4.0
3.8
3.6 VR1 = 2.8V,VR2 = 2.6V
3.4 VDET = VTH + 20 mV
3.2
3.0
2.8
2.6
2.4
2.2
2.0
-40 -25 -10 5 20
VDET = 4.2V
RESETISOURCE = 800 µA
VDET = 3.0V
RESETISOURCE = 500 µA
35 50 65 80 95 110 125
Junction Temperature (°C)
FIGURE 2-32:
RESET Output Voltage High
vs. Junction Temperature.
© 2005 Microchip Technology Inc.
DS21798B-page 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet TC1301B.PDF ] | |
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