 2014 Microchip Technology Inc.

DS20005308B-page 3

MCP16331

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

BOOST – GND ................................................... -0.5V to 60V

BOOST – SW Voltage........................................ -0.5V to 6.0V

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

Power Dissipation ....................................... Internally Limited

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

Electrical Characteristics:

Boldface

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Input Voltage

4.4

—

50

V

Note 1

Feedback Voltage

0.784

0.800

0.816

V

Output Voltage Adjust Range

2.0

—

24

V

Note 1, Note 3

Feedback Voltage



Line Regulation

—

0.002

0.1

%/V

Feedback Voltage



Load Regulation

—

0.13

0.35

%

500 mA

Feedback Input Bias Current

—

+/- 3

—

nA

Undervoltage Lockout Start

—

4.1

4.4

V

Undervoltage Lockout Stop

3

3.6

—

V

Undervoltage Lockout



Hysteresis

—

0.5

—

V

Switching Frequency

425

500

550

kHz

Maximum Duty Cycle

90

93

—

%

Minimum Duty Cycle

—

1

—

%

Note 4

NMOS Switch On Resistance

—

0.6

—



Note 3

NMOS Switch Current Limit

—

1.3

—

A

Note 3

Quiescent Current

—

1

1.7

mA

Quiescent Current - Shutdown

—

6

10

A

Output Current

500

—

—

mA

Note 1; see Figure 2-9

EN Input Logic High

1.9

—

—

V

Note

1:

The input voltage should be > output voltage + headroom voltage; higher load currents increase the input voltage

necessary for regulation. See characterization graphs for typical input to output operating voltage range.

2:

3:

Determined by characterization, not production tested.

4:

This is ensured by design.