© 2002 Microchip Technology Inc.

DS21395B-page 3

TC170

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage ....................................................... 18V

Package Thermal Resistance:

SOIC (Wide)

SOIC (Wide)

PDIP (Narrow)

PDIP (Narrow)

Operating Temperature Range ............... 0°C to +70°C

Storage Temperature Range .............. -65°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.

TC170 ELECTRICAL SPECIFICATIONS

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Reference Voltage

Reference Voltage

5

5.1

5.3

V

Line Regulation

5

15

mV

Load Regulation

13

20

mV

Temperature Coefficient

0.4

0.5

mV/°C

Over operating temperature range.

Oscillator

F

Oscillator Frequency

35

42

46

kHz

Voltage Stability

1.1

1.5

%/V

Temperature Stability

5

10

%

Over operating temperature range.

Error Amplifier

Input Offset Voltage

±30

mV

Input Bias Current

±1

nA

Common-Mode Input Voltage

0

V

Open-Loop Voltage Gain

70

dB

BW

Unity Gain Bandwidth

1.2

MHz

CMRR

Common-Mode Rejection Ratio

60

dB

PSRR

Power Supply Rejection Ratio

60

dB

Current Sense Amplifier

Amplifier Gain

3

3.15

3.3

V/V

Pin 3 = 0V to 1.1V

Maximum Differential Input Signal

≤ 1.1

V

Common-Mode Input Voltage

0

V

Current Limit Adjust

Current Limit Offset Voltage

0.5

1

V

Input Bias Current

1

nA

Shutdown Terminal

Threshold Voltage

0.3

0.35

0.4

V

Input Voltage Range

0

V

Minimum Latching Current at Pin 1

125

µA

Maximum Nonlatching Current at Pin 1

50

µA