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Fabricante

TC57

Line Regulator Controller

Microchip Technology 

TC57

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Input Voltage ........................................................+12V

Output Current ....................................................50mA

Output Voltage............................. -0.3V to (VIN + 0.3V)

Power Dissipation.............................................150mW

Operating Temperature Range.............-40°C to +85°C

Storage Temperature Range ..............-40°C to +150°C

*Stresses above those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. These

are stress ratings only and functional operation of the device

at these or any other conditions above those indicated in the

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC55 ELECTRICAL SPECIFICATIONS

TC57EP3002 Electrical Characteristics: SHDN = GND, VIN = VOUT + 1V, VOUT = 3V to 5V, IOUT = 0, TA = 25°C, Test Circuit of

Figure 3-1, unless otherwise noted. (Note 2)

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

VIN

VEXT

VOUT

VOUT

VIN - VOUT

IDD

ISHDN

VOUT/VIN

Input Voltage

Voltage on EXT Output

Output Voltage

Load Regulation

Dropout Voltage

Supply Current

Shutdown Supply Current

Line Regulation

—

—

8

V

—

—

8

V

0.98 X VR VR ±0.5% 1.02 X VR

V

IOUT = 50mA (Note 1)

-60

—

60

mV 1mA  IOUT 100mA (Note 3)

—

100

—

mV IOUT = 100mA (Note 2)

—

50

80

A VSHDN = VIN = 5V

—

—

0.6

A VSHDN = GND

—

0.1

0.3

%/V IOUT = 50mA, 4V VIN 8V

(Note 3)

VOUT/T VOUT Temperature Coefficient

—

±100

—

ppm/°C IOUT = 10mA, -40°C <TJ85°C

(Note 3)

ILEXT

EXT Pin Leakage Current

—

—

0.5

A

IEXT

EXT Sink Current

—

—

25

mA Note 4

VIH

SHDN Input High Logic Threshold

1.5

—

—

V

VIL

SHDN Input Low Logic Threshold

—

—

0.25

V

IIH

SHDN Input Current @ VIH

—

—

0.1

A VSHDN = VIN = 5V

IIL

SHDN Input Current @ VIL

-0.2

-0.05

0

A VSHDN = GND

Note 1: VR is the regulator output voltage setting.

2: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at a

1V differential.

3: Varies with type of pass transistor used. Numbers shown are for the test circuit of Figure 3-1.

4: The product of IEXT X VEXT must be less than the maximum allowable power dissipation.

DS21437C-page 2

 2001-2012 Microchip Technology Inc.

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