DatasheetsPDF.com

TC110

Microchip
Part Number TC110
Manufacturer Microchip
Description PFM/PWM Step-Up DC/DC Controller
Published Aug 21, 2005
Detailed Description TC110 PFM/PWM Step-Up DC/DC Controller Features • • • • • Assured Start-up at 0.9V 50µA (Typ) Supply Current (fOSC = 100...
Datasheet PDF File TC110 PDF File

TC110
TC110


Overview
TC110 PFM/PWM Step-Up DC/DC Controller Features • • • • • Assured Start-up at 0.
9V 50µA (Typ) Supply Current (fOSC = 100kHz) 300mA Output Current @ VIN ≥ 2.
7V 0.
5µA Shutdown Mode 100kHz and 300kHz Switching Frequency Options • Programmable Soft-Start • 84% Typical Efficiency • Small Package: 5-Pin SOT-23A General Description The TC110 is a step-up (Boost) switching controller that furnishes output currents of up to 300mA while delivering a typical efficiency of 84%.
The TC110 normally operates in pulse width modulation mode (PWM), but automatically switches to pulse frequency modulation (PFM) at low output loads for greater efficiency.
Supply current draw for the 100kHz version is typically only 50µA, and is reduced to less than 0.
5µA when the SHDN input is brought low.
Regulator operation is suspended during shutdown.
The TC110 accepts input voltages from 2.
0V to 10.
0V, with a guaranteed start-up voltage of 0.
9V.
The TC110 is available in a small 5-Pin SOT-23A package, occupies minimum board space and uses small external components (the 300kHz version allows for less than 5mm surface-mount magnetics).
Applications • • • • Palmtops Battery-Operated Systems Positive LCD Bias Generators Portable Communicators Functional Block Diagram Device Selection Table Part Number TC110501ECT TC110331ECT TC110301ECT TC110503ECT TC110333ECT TC110303ECT + Output Voltage (V)* 5.
0 3.
3 3.
0 5.
0 3.
3 3.
0 Package 5-Pin SOT-23A 5-Pin SOT-23A 5-Pin SOT-23A 5-Pin SOT-23A 5-Pin SOT-23A 5-Pin SOT-23A Osc.
Freq.
(kHz) 100 100 100 300 300 300 Operating Temp.
Range -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C Battery 3V 10µF – + 47µH D1 IN5817 VOUT Si9410DY 47µF Tantalum + 5 EXT 4 GND TC110 VOUT 1 VDD 2 SHDN/SS 3 R OFF ON *Other output voltages are available.
Please contact Microchip Technology Inc.
for details.
C Package Type *RC Optional 5-Pin SOT-23A EXT 5 GND 4 3V to 5V Supply TC110 1 VOUT 2 3 VDD SHDN/SS NOTE: 5-Pin SOT-23A i...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)