TC828AECTTR

TC828AECTTR Datasheet

TC828A

Part	Datasheet
TC828AECTTR	TC828AECTTR (pdf)

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TC828A Switched Capacitor Voltage Converter s Charge Pump in 5-Pin SOT-23A Package s >95% Voltage Conversion Efficiency s Voltage Inversion and/or Doubling s Low 38µA Quiescent Current s Operates from +1.8V to +5.5V s Up to 25mA Output Current s Only Two External Capacitors Required s Lower Power Version of TCM828 s LCD Panel Bias s Cellular Phones s Pagers s PDAs, Portable Dataloggers s Battery-Powered Devices PIN CONFIGURATION 5-Pin SOT-23A OUT 1 VIN 2 TC828ECT The TC828A is a CMOS “charge-pump” voltage converter in an ultra-small 5-Pin SOT-23A package. It can invert and/or double an input voltage that can range from +1.8V to +5.5V. Conversion efficiency is typically >95%, and switching frequency is 12KHz. The external component requirement is only two capacitors 10µF nominal for standard voltage inverter applications. With a few additional components a positive doubler can also be built. All other circuitry, including control, oscillator, power MOSFETs are integrated on-chip. Supply current is 38µA typically. The TC828A is available in a 5-Pin SOT-23A surface mount package. ORDERING INFORMATION Package Temp. Range TC828AECT 5-Pin SOT-23A 40°C to +85°C NOTE 5-Pin SOT-23A is equivalent to EIAJ-SC74A. 4 GND NOTE 5-Pin SOT-23A is equivalent to EIAJ SC-74A TYPICAL OPERATING CIRCUIT Voltage Inverter TC828A INPUT OUTPUT TC828A-1 5/1/00 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices. Switched Capacitor Voltage Converters TC828A ABSOLUTE MAXIMUM RATINGS Input Voltage VIN to GND +6.0V, 0.3V Output Voltage OUT to GND + 0.3V Current at OUT Pin 50mA Short-Circuit Duration OUT to GND Indefinite Operating Temperature Range 40°C to +85°C Power Dissipation TA 70°C 5-Pin SOT-23A Storage Temperature Unbiased 65°C to +150°C Lead Temperature Soldering, 10 sec +300°C *This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS TA = to +85°C, VIN = +5V, C1 = C2 = 10 µF, unless otherwise noted. Typical values are at TA = +25°C. Parameter Test Conditions Min Typ Max Unit Supply Current Minimum Supply Voltage Maximum Supply Voltage RLOAD = 1 RLOAD = 1 FOSC PEFF VEFF Oscillator Frequency Power Efficiency Voltage Conversion Efficiency RLOAD = 1 TA = +25°C RLOAD = ∞ ROUT Output Resistance IOUT = 5 mA, TA = +25°C TA = to +85°C NOTE Capacitor contribution is approximately 20% of the output impedance [ESR = 1 / pump frequency x capacitance ]. All 40°C to +85°C specifications above are guaranteed by design. PIN DESCRIPTION Pin No. 5-Pin SOT-23A

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TC828A

Switched Capacitor Voltage Converter
s Charge Pump in 5-Pin SOT-23A Package s >95% Voltage Conversion Efficiency s Voltage Inversion and/or Doubling s Low 38µA Quiescent Current s Operates from +1.8V to +5.5V s Up to 25mA Output Current s Only Two External Capacitors Required s Lower Power Version of TCM828
s LCD Panel Bias s Cellular Phones s Pagers s PDAs, Portable Dataloggers s Battery-Powered Devices

PIN CONFIGURATION
5-Pin SOT-23A

OUT 1

VIN 2 TC828ECT

The TC828A is a CMOS “charge-pump” voltage converter in an ultra-small 5-Pin SOT-23A package. It can invert and/or double an input voltage that can range from +1.8V to +5.5V. Conversion efficiency is typically >95%, and switching frequency is 12KHz.

The external component requirement is only two capacitors 10µF nominal for standard voltage inverter applications. With a few additional components a positive doubler can also be built. All other circuitry, including control, oscillator, power MOSFETs are integrated on-chip. Supply current is 38µA typically.

The TC828A is available in a 5-Pin SOT-23A surface mount package.
ORDERING INFORMATION

Package

Temp. Range

TC828AECT
5-Pin SOT-23A
40°C to +85°C

NOTE 5-Pin SOT-23A is equivalent to EIAJ-SC74A.
4 GND

NOTE *5-Pin SOT-23A is equivalent to EIAJ SC-74A

TYPICAL OPERATING CIRCUIT Voltage Inverter

TC828A

INPUT

OUTPUT

TC828A-1 5/1/00 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.

Switched Capacitor Voltage Converters

TC828A

ABSOLUTE MAXIMUM RATINGS*

Input Voltage VIN to GND +6.0V, 0.3V Output Voltage OUT to GND + 0.3V Current at OUT Pin 50mA Short-Circuit Duration OUT to GND Indefinite Operating Temperature Range 40°C to +85°C

Power Dissipation TA 70°C 5-Pin SOT-23A

Storage Temperature Unbiased 65°C to +150°C Lead Temperature Soldering, 10 sec +300°C
*This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS TA = to +85°C, VIN = +5V, C1 = C2 = 10 µF, unless otherwise
noted. Typical values are at TA = +25°C.

Parameter

Test Conditions

Min Typ Max Unit

Supply Current

Minimum Supply

Voltage

Maximum Supply

Voltage

RLOAD = 1 RLOAD = 1

FOSC PEFF VEFF

Oscillator Frequency Power Efficiency Voltage Conversion Efficiency

RLOAD = 1 TA = +25°C RLOAD = ∞

ROUT

Output Resistance

IOUT = 5 mA, TA = +25°C TA = to +85°C

NOTE Capacitor contribution is approximately 20% of the output impedance [ESR = 1 / pump frequency x capacitance ]. All 40°C to +85°C specifications above are guaranteed by design.

PIN DESCRIPTION

Pin No. 5-Pin SOT-23A

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived TC828AECTTR Datasheet file may be downloaded here without warranties.

Datasheet ID: TC828AECTTR 648225