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  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1307 Datasheet

Four-Channel CMOS LDO

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TC1307 pdf
M
TC1307
Four-Channel CMOS LDO with Select Mode, Shutdown and
Independent Reset
Features
• Four Independent 150 mA LDOs
• Low Supply Current (220 µA typical)
www.DataSheet4U.com• High Output Voltage Accuracy (0.5% typical)
• Low Dropout Voltage (100 mV typical with
150 mA load)
• Four Independent Shutdown Inputs
• Select Mode: Selectable Output Voltages for
High Design Flexibility
• Integrated Independent Microprocessor Reset
• Low Noise Outputs
• Fast Response from Shutdown (10 µs 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°C to +125°C
Applications
• Battery Operated Systems
• Potable Computers
• Set Top Boxes
• Load Partitioning
• Medical Instruments
• Cellular / GSM / PHS Phones
• Instrumentation
• Linear Post Regulator for SMPS
• Pagers
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 µA
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.
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 VOUT1,
and VOUT2 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 VOUT3, and
VOUT4 from three different values (1.8V, 2.5V or 2.8V).
All four LDO’s require only a 1 µF 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.
Package Types
QSOP
VDET 1
SHDN1 2
SELECT12 3
VIN 4
VIN 5
GND 6
SHDN3 7
VIN 8
TC1307
16 RESET
15 SHDN2
14 VOUT1
13 VOUT2
12 VOUT3
11 VOUT4
10 SELECT34
9 SHDN4
2002 Microchip Technology Inc.
DS21702A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

TC1307 Datasheet

Four-Channel CMOS LDO

No Preview Available !

TC1307 pdf
TC1307
1.0 ELECTRICAL
CHARACTERISTICS
1.1 Maximum Ratings*
VDD..............................................................................6.5V
All inputs and outputs w.r.t. ....... ...VIN + 0.3V to -0.3V
Output Short Circuit Current ...... ...............continuous
Storage temperature.................... .... -65°C to +150°C
Operating Junction Temperature,
TJ..................................................-40°C < TJ < +150°C
Maximum Junction Temperature, TJ..................150°C
www.DataSheet4UE.ScDomprotection on all pins...................................4 kV
*Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational listings of this specification
is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
PIN FUNCTION TABLE
Name
Function
VDET
SHDN1
SELECT12
VIN
VIN
GND
SHDN3
VIN
SHDN4
SELECT34
VOUT4
VOUT3
VOUT2
VOUT1
SHDN2
RESET
Voltage Detect Input
Shutdown for VOUT1
Input for setting VOUT1 and VOUT2.
Input Voltage Connection
Input Voltage Connection
Ground connection
Shutdown for VOUT3
Input Voltage Connection
Shutdown for VOUT4
Input for setting VOUT3 and VOUT4.
LDO4 Output
LDO3 Output
LDO2 Output
LDO1 Output
Shutdown for VOUT2
Reset Output
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, all limits are established for VIN = VR+1, IL = 100 µA, CL = 3.3 µF, SHDN > VIH, TA = 25°C.
Boldface type specifications apply for junction temperatures, TJ (Note 9) of -40°C to +125°C.
Parameter
Sym
Min Typ Max Units
Conditions
Input Characteristics:
Input Operating Voltage
Input Quiescent Current
Input Shutdown Current
Output Characteristics:
VIN
IIN
IIN_SHDN
2.7
— 220
— 0.1
6.0
370
0.5
V Note 1
µA SHDN = VIH, IL = 0
µA SHDN = 0V
Maximum Output Current
Output Short Circuit Current
(Average)
IOUT_MAX
IOUT_SC
150
— 360
mA
mA VOUT = 0V
Voltage Regulation
LDO1/LDO2/LDO3/LDO4
VOUT
VR-2.5% VR±0.5 VR+2.5%
V Note 2
Note 1: The minimum VIN must meet two conditions: VIN 2.7V and VIN (VR + 2.5%) + VDROPOUT.
2:
3:
VR is the
TCVOUT
=no(VmOinUaTl-HreIGgHul-aVtoOrUoTu-LtpOuWt)v*ol1ta0g6e/.(FVoRr*exTaemmpplee:rVatRur=e)1,.V8VO,U2T-.H5VIG,H2=.8HVigohr e3s.0t Vv.oltage
measured
over
the
tempera-
ture range. VOUT-LOW = Lowest voltage measured over the temperature range.
4: Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is
tested over a load range from 1mA to the maximum specified output current. Changes in output voltage due to heating
effects are determined using thermal regulation specification TCVOUT.
5: Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied.
Specifications are for a current pulse equal to ILMAX at VIN = 6.0V for t = 10 msec.
6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value
with a 1V differential applied.
7: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temper-
ature and the thermal resistance from junction to air. (i.e. TA, TJ, θJA). Exceeding the maximum allowable power dissipa-
tion will cause the device operating junction temperature to exceed the maximum 150°C rating. Sustained junction
temperatures above 150°C can impact the device reliability.
8: VTH-MIN = 2.55V and VTH-MAX = 2.70V.
9: The Junction temperature is approximated by soaking the device under test at an ambient temperature equal to the
desired Junction temperature. The test time is small enough such that the rise in the Junction temperature over the Ambi-
ent temperature is not significant.
DS21702A-page 2
2002 Microchip Technology Inc.


Part Number TC1307
Description Four-Channel CMOS LDO
Maker Microchip Technology
Total Page 28 Pages
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