 2013-2019 Microchip Technology Inc.

DS20005255C-page 3

MCP16311/2

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VIN, SW ............................................................... -0.5V to 32V

BOOST – GND ................................................... -0.5V to 38V

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

VFB Voltage ........................................................ -0.5V to 6.0V

EN Voltage ............................................. -0.5V to (VIN +0.3V)

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

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

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

Ambient Temperature with Power Applied ....-40°C to +125°C

Operating Junction Temperature...................-40°C to +150°C

ESD Protection on All Pins:

HBM ..................................................................... 1 kV

MM ......................................................................200V

† 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: Unless otherwise indicated, TA =+25°C, VIN =VEN =7V, VBOOST -VSW =5.0V,

VOUT =5.0V, IOUT = 100 mA, L = 22 µH, COUT =CIN = 2 x 10 µF X7R Ceramic Capacitors.

Boldface specifications apply over the TA range of -40°C to +125°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

VIN Supply Voltage

Input Voltage

VIN

4.4

—

30

V

Note 1

Quiescent Current

IQ

—44

60

µA

Nonswitching,

VFB =0.9V

Quiescent Current -

PFM Mode

IQ_PFM

—85

—

µA

Switching,

IOUT =0 (MCP16311)

Quiescent Current -

PWM Mode

IQ_PWM

—3.8

8

mA

Switching,

IOUT =0 (MCP16312)

Quiescent Current -

Shutdown

IQ_SHDN

—3

9

µA

VOUT =EN = 0V

VIN Undervoltage Lockout

Undervoltage Lockout Start

UVLOSTRT

—4.1

4.4

VVIN Rising

Undervoltage Lockout Stop

UVLOSTOP

3.18

3.6

—

V

VIN Falling

Undervoltage Lockout

Hysteresis

UVLOHYS

0.2

0.5

1

V

Output Characteristics

Feedback Voltage

VFB

0.784

0.800

0.816

VIOUT =5 mA

Output Voltage

Adjust Range

VOUT

2.0

—

24

V

Note 2, Note 3

Feedback Voltage

Line Regulation

VFB/VFB)/VIN -0.15

0.01

0.15

%/V

VIN = 7V to 30V,

IOUT =50mA

Feedback Voltage

Load Regulation

VFB / VFB

—0.25

—

%

IOUT = 5 mA to 1A,

MCP16312

Note 1:

The input voltage should be greater than the output voltage plus headroom voltage; higher load currents

increase the input voltage necessary for regulation. See characterization graphs for typical input-to-output

operating voltage range.

2:

For VIN <VOUT, VOUT will not remain in regulation; for output voltages above 12V, the maximum current

will be limited to under 1A.

3:

Determined by characterization, not production tested.

4:

This is ensured by design.