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TC115301EMTTR

Description
Conv DC-DC 0.9V to 10V Step Up Single-Out 3V 0.14A 6-Pin(5+Tab) SOT-89 T/R
File Size154KB,14 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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TC115301EMTTR Overview

Conv DC-DC 0.9V to 10V Step Up Single-Out 3V 0.14A 6-Pin(5+Tab) SOT-89 T/R

TC115301EMTTR Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeStep Up
Output TypeFixed
Switching Frequency (kHz)115
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)3
Maximum Output Current (A)0.14(Typ)
Minimum Input Voltage (V)0.9
Maximum Input Voltage (V)10
Operating Supply Voltage (V)0.9 to 10
Typical Quiescent Current (uA)80
Efficiency (%)85(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTape and Reel
Supplier PackageSOT-89
Pin Count6
MountingSurface Mount
Package Height1.6(Max)
Package Length4.6(Max)
Package Width2.6(Max)
PCB changed5
TabTab
TC115
PFM/PWM Step-Up DC/DC Converter
Features
• High Efficiency at Low Output Load Currents via
PFM Mode
• Assured Start-up at 0.9V
• 80 µA (Typ) Supply Current
• 85% Typical Efficiency at 100 mA
• 140 mA Typical Output Current @ V
IN
½
2.0V
• Low Power Shutdown Mode
• No External Switching Transistor Needed
• Space-Saving SOT-89 Package
Package Type
SOT-89-5
PS
5
GND
TC115
NC
1
PS
2
SHDN
3
4
LX
Applications
Pagers
Cellular Phones
Palmtops
1-Cell to 3-Cell Battery Powered Systems
Cameras, Video Recorders
Local +3V to +5V Supplies
General Description
The TC115 is a high-efficiency step-up DC/DC
converter for small, low input voltage or battery-
powered systems. This device has a start-up voltage
of 0.9V and a typical supply current of 80 µA. Phase
compensation and soft-start circuitry are included on-
chip. Unlike conventional PWM step-up converters,
the TC115 automatically shifts to pulse frequency
modulation (PFM) at low loads, resulting in reduced
supply current and improved efficiency.
The TC115 requires only an external diode, an inductor
and a capacitor, while supporting typical output cur-
rents of 140 mA. Supply current is reduced to less than
0.5 µA (max) when SHDN input is brought low.
Small size, low installed cost and low supply current
make the TC115 step-up converter ideal for use in a
wide range of battery-powered systems.
Functional Block Diagram
L
1
100 µH
Sumida
®
CD-54
+
1.5V
+
C
1
10 µF
5
GND
D
1
IN5817 +
C
2
47 µF
Tantalum
+3V
OUT
PS
4
LX
TC115
NC
1
PS
2
SHDN
3
1.5V to +3V, 50 mA Supply
2002-2012 Microchip Technology Inc.
DS21361D-page 1
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