TC1224-XXVCT datasheet(4/14 Pages) MICROCHIP

Nome de Peças	TC1224-XXVCT

Descrição Electrónicos	50mA and 100mA CMOS LDOs with Shutdown

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TC1223/TC1224

DS21368B-page 4

3.0

DETAILED DESCRIPTION

The TC1223 and TC1224 are precision fixed output

voltage regulators. Unlike bipolar regulators, the

TC1223 and TC1224’s supply current does not

increase with load current. In addition, VOUT remains

stable and within regulation over the entire 0mA to

IOUTMAX operating load current range, (an important

consideration in RTC and CMOS RAM battery back-up

applications).

Figure 3-1 shows a typical application circuit. The

regulator is enabled any time the shutdown input

(SHDN)isatorabove VIH, and shutdown (disabled)

when SHDN is at or below VIL. SHDN may be

controlled by a CMOS logic gate, or I/O port of a micro-

controller. If the SHDN input is not required, it should be

connected directly to the input supply. While in

shutdown, supply current decreases to 0.05

µA(typical)

and VOUT fallstozerovolts.

FIGURE 3-1:

TYPICAL APPLICATION

CIRCUIT

3.1

Output Capacitor

A1

µF(min) capacitor from VOUT to ground is

recommended. The output capacitor should have an

effective series resistance greater than 0.1

Ω and less

than 5.0

Ω, and a resonant frequency above 1MHz. A

1

µF capacitor should be connected from VIN to GND if

there is more than 10 inches of wire between the

regulator and the AC filter capacitor, or if a battery is

used as the power source. Aluminum electrolytic or

tantalum capacitor types can be used. (Since many

aluminum electrolytic capacitors freeze at approxi-

mately -30°C, solid tantalums are recommended for

applications operating below -25°C.) When operating

from

sources

other

than

batteries,

supply-noise

rejection and transient response can be improved by

increasing the value of the input and output capacitors

and employing passive filtering techniques.

TC1223

TC1224

VOUT

SHDN

GND

NC

1

µF

+

VIN

VOUT

Shutdown Control

(to CMOS Logic or Tie

to VIN if unused)

1

µF

+

Battery

+

Nº de peça semelhante - TC1224-XXVCT

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Microchip Technology	TC1224-50VCTTR	463Kb / 14P	50mA and 100mA CMOS LDOs with Shutdown 05/01/02
Microchip Technology	TC1224-VCT	463Kb / 14P	50mA and 100mA CMOS LDOs with Shutdown 05/01/02

More results

Descrição semelhante - TC1224-XXVCT

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Microchip Technology	TC1223	240Kb / 16P	50mA and 100mA CMOS LDOs with Shutdown 2002-2012 10/26/12
	TC1224-50VCTTR	463Kb / 14P	50mA and 100mA CMOS LDOs with Shutdown 05/01/02
	TC1070	650Kb / 20P	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown 2007
	TC1070	495Kb / 16P	50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown 2002
	TC1014	558Kb / 20P	50mA, 100mA and 150mA CMOS LDOs with Shutdown and Reference Bypass 2002
	TC2054	519Kb / 16P	50mA, 100mA, and 150mA CMOS LDOs with Shutdown and Error Output 2002
	TC1054	501Kb / 18P	50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output 2002
	TC1073	564Kb / 20P	50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass 2002
	TC1072	727Kb / 22P	50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass 2007
	TC1072-25VCH713	658Kb / 22P	50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass 12/08/06

More results

TC1224-XXVCT Folha de dados(PDF) 4 Page - Microchip Technology

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