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TC1306 Datasheet

  • TC1306

  • Dual 150mA CMOS LDOWith Select Mode? Operation, Shutdown and...

  • 16頁

  • MICROCHIP   MICROCHIP

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TC1306
Dual 150mA CMOS LDO With Select Mode鈩?Operation,
Shutdown and RESET Output
Features
鈥?Extremely Low Supply Current for Longer Battery
Life
鈥?Select Mode鈩?Operation: Selectable Output
Voltages for High Design Flexibility
鈥?Very Low Dropout Voltage
鈥?10碌sec (Typ.) Wake-Up Time from SHDN
鈥?Maximum 150mA Output Current per Output
鈥?High Output Voltage Accuracy
鈥?Power-Saving Shutdown Mode
鈥?RESET Output Can Be Used as a Low Battery
Detector or Processor Reset Generator
鈥?Over Current Protection and Over Temperature
Shutdown
鈥?Space Saving 8-Pin MSOP Package
General Description
The TC1306 combines two CMOS Low Dropout Regu-
lators and a Microprocessor Monitor in a space saving
8-Pin MSOP package. Designed specifically for battery
operated systems, total supply current is typically
120碌A(chǔ) at full load, 20 to 60 times lower than in bipolar
regulators.
The TC1306 features selectable output voltages for
higher design flexibility. The dual-state SELECT input
pin allows the user to select V
OUT2
from 2 different
values (2.8V and 3.0V). V
OUT1
supplies a fixed 1.8V
voltage.
An active low RESET is asserted when the output
voltage V
OUT2
falls below the 2.63V reset voltage
threshold. The RESET output remains low for 300msec
(typical) after V
OUT2
rises above reset threshold. When
the shutdown control (SHDN1) is low, the regulator
output voltage V
OUT1
falls to zero and RESET output
remains valid. When the shutdown control (SHDN2) is
low, the regulator output voltage V
OUT2
falls to zero and
RESET output is low.
Other key features for the device include ultra low noise
operation, fast response to step changes in load and
very low dropout voltage (typically 125mV at full load).
The device also incorporates both over temperature
and over current protection. Each regulator is stable
with an output capacitor of only 1碌F and has a
maximum output current of 150mA.
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Load Partitioning
Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Pagers and Cellular/GSM/PHS Phones
Linear Post-Regulator for SMPS
Device Selection Table
Part Number
TC1306R-BDVUA
Package
8-Pin MSOP
Junction
Temperature
Range
-40擄C to +125擄C
Typical Application
V
IN
GND
3
SELECT
SHDN1
4
1
2
8
7
RESET
V
OUT2
3.3碌F
6
3.3碌F
5
SHDN2
V
OUT1
NOTE:
鈥淩鈥?denotes the suffix for the 2.63V RESET threshold.
鈥淏鈥?indicates V
OUT1
= 1.8V (fixed).
鈥淒鈥?indicates V
OUT2
= 2.8V, 3.0V (selectable).
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
TC1306
Package Type
8-Pin MSOP
V
IN
1
GND 2
SELECT 3
SHDN1 4
8 RESET
7 V
OUT2
TC1306
6 V
OUT1
5
SHDN2
2002 Microchip Technology Inc.
DS21527B-page 1
漏

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