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TC1307 Datasheet

  • TC1307

  • Four-Channel CMOS LDO with Select Mode, Shutdown and Indepen...

  • 28頁

  • MICROCHIP   MICROCHIP

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M
Features
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Four Independent 150 mA LDOs
Low Supply Current (220 碌A typical)
High Output Voltage Accuracy (0.5% typical)
Low Dropout Voltage (100 mV typical with
150 mA load)
Four Independent Shutdown Inputs
Select Mode
鈩?/div>
: Selectable Output Voltages for
High Design Flexibility
Integrated Independent Microprocessor Reset
Low Noise Outputs
Fast Response from Shutdown (10 碌s typical)
RESET Output for Low Battery Detection or Reset
Generator
Over Current and Over-Temperature Protection
Small 16-Pin QSOP Package
Specified Junction Temperature Range:
- -40擄C to +125擄C
TC1307
All four LDOs have independent shutdown inputs and
can be programmed using two select inputs making the
TC1307 adaptable for a wide range of multiple output
applications. The tri-state SELECT12 input pin allows
the designer to select the output voltages on V
OUT1
,
and V
OUT2
from three different values (2.5V, 2.8V or
3.0V). The tri-state SELECT34 input pin allows the
designer to select the output voltages on V
OUT3
, and
V
OUT4
from three different values (1.8V, 2.5V or 2.8V).
All four LDO鈥檚 require only a 1 碌F output capacitor for
stability that can be ceramic, tantalum or aluminum
over the entire input voltage operating range and 0 mA
to 150 mA rated load range. All four LDOs have low
output noise and excellent dynamic response when
faced with sudden line and load changes.
The voltage detect pin is set for a threshold of 2.63V
(typical) and operates down to a minimum input voltage
of 1.0V. When the voltage on the detect pin rises above
the 2.63V threshold, the RESET output is held low for
300 ms (typical).
Additional integrated features include over-current pro-
tection and over-temperature protection providing full
protection from external load faults.
Four-Channel CMOS LDO with Select Mode, Shutdown and
Independent Reset
Applications
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Battery Operated Systems
Potable Computers
Set Top Boxes
Load Partitioning
Medical Instruments
Cellular / GSM / PHS Phones
Instrumentation
Linear Post Regulator for SMPS
Pagers
Package Types
QSOP
V
DET
SHDN1
SELECT12
V
IN
V
IN
GND
SHDN3
V
IN
1
2
3
4
TC1307
5
6
7
8
12
V
OUT
3
11
V
OUT
4
10
SELECT34
9
16
RESET
15
SHDN2
14
V
OUT
1
13
V
OUT
2
Description
The TC1307 combines four CMOS Low Dropout Linear
Regulators with a Microcontroller Monitor in a space-
saving 16-Pin QSOP package. Developed specifically
for battery powered portable applications, all four out-
puts of the TC1307 typically consume a total of 220 碌A
supply current, hold the output voltage to a tolerance of
0.5% and require 100 mV of headroom for regulation at
the maximum output current of 150 mA. In addition to
the four high performance LDOs, the TC1307 also
includes a voltage detector with a delayed RESET out-
put that can be configured for low battery detection or
Microcontroller Reset Generator.
SHDN4
錚?/div>
2002 Microchip Technology Inc.
DS21702A-page 1

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