© 2005 Microchip Technology Inc.

DS21936B-page 5

MCP1726

Fixed-Output Characteristics

Voltage Regulation

2.5%

±0.5%

2.5%

V

Note 2

Dropout Characteristics

Dropout Voltage

—220

500

mV

(Note 5)

Power Good Characteristics

Input Voltage Operating Range

for Valid PWRGD

1.0

—

6.0

V

1.2

—

6.0

PWRGD Threshold Voltage

PWRGD_THF

88

92

96

89

92

95

PWRGD_THR

89

94

98

90

93

96

PWRGD Output Voltage Low

—0.2

0.4

PWRGD Leakage

—0.1

—

µA

PWRGD Time Delay

—200

—

µs

10

30

55

ms

—300

—

ms

Detect Threshold to PWRGD

Active Time Delay

—170

—

µs

Shutdown Input

Logic-High Input

45

Logic-Low Input

15

SHDN Input Leakage Current

-0.1

±0.001

+0.1

µA

SHDN = GND

DC CHARACTERISTICS (Continued)

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

2:

3:

4:

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load

regulation is tested over a load range from 1 mA to the maximum specified output current.

5:

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2%

6:

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

mum allowable power dissipation will cause the device operating junction temperature to exceed the maxi-

mum 150°C rating. Sustained junction temperatures above 125°C can impact device reliability.

7:

The junction temperature is approximated by soaking the device under test at an ambient temperature

equal to the desired junction temperature. The test time is small enough such that the rise in the junction

temperature over the ambient temperature is not significant.