MCP1603

DS22042A-page 4

© 2007 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

Output Short Circuit Current..................................Continuous

Power Dissipation (Note 5) ..........................Internally Limited

Storage Temperature.....................................-65°C to +150°C

Ambient Temp. with Power Applied.................-40°C to +85°C

Operating Junction Temperature...................-40°C to +125°C

ESD Protection On All Pins:

HBM..............................................................................4 kV

MM...............................................................................300V

† Notice: Stresses above those listed under "Maximum

Ratings" may cause permanent damage to the device. This is

a stress rating only and functional operation of the device at

those or any other conditions above those indicated in the

operational sections of this specification is not intended.

Exposure to maximum rating conditions for extended periods

may affect device reliability.

DC CHARACTERISTICS

Parameters

Sym

Min

Typ

Max

Units

Conditions

Input Characteristics

Input Voltage

2.7

—

5.5

V

Note 1

Maximum Output Current

500

——

mA

Note 1

Shutdown Current

—

0.1

1

µA

SHDN = GND

Quiescent Current

—45

60

µA

Shutdown/UVLO/Thermal Shutdown Characteristics

SHDN, Logic Input Voltage Low

——

15

SHDN, Logic Input Voltage High

45

——

SHDN, Input Leakage Current

-1.0

±0.1

1.0

µA

Undervoltage Lockout

UVLO

2.12

2.28

2.43

—

140

—

mV

Thermal Shutdown

—

150

—

°C

Note 4, Note 5

Thermal Shutdown Hysteresis

—10

—

°C

Note 4, Note 5

2: Reference Feedback Voltage Tolerance applies to adjustable output voltage setting.

4: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable

allowable power dissipation causes the device to initiate thermal shutdown.

to the GND pin. In cases where these diodes are forward-biased, the package power dissipation limits

must be adhered to. Thermal protection is not able to limit the junction temperature for these cases.

6: The current limit threshold is a cycle-by-cycle peak current limit.