MCP16311-ESLASHMS datasheet(4/40 Pages) MICROCHIP

4 / 40 page

MCP16311/2

DS20005255B-page 4

 2013-2014 Microchip Technology Inc.

Feedback Input

Bias Current

IFB

—10

250

Output Current

IOUT

1—

—

Notes 1 to 3, Figure 2-7

Switching Characteristics

Switching Frequency

fSW

425

500

575

kHz

Maximum Duty Cycle

DCMAX

—

Note 3

Minimum Duty Cycle

DCMIN

—2

—

Note 4

High-Side NMOS Switch-On

Resistance

RDS(ON)

—0.3

—



VBOOST –VSW = 5V,

Note 3

Buck NMOS Switch

Current Limit

I(MAX)

—1.8

—

VBOOST –VSW = 5V,

Note 3

Synchronous NMOS Switch-

On Resistance

RDS(ON)

—0.17

—



Note 3

EN Input Characteristics

EN Input Logic High

VIH

1.85

——

EN Input Logic Low

VIL

——

0.4

EN Input Leakage Current

IENLK

—0.1

µA

VEN =5V

Soft-Start Time

tSS

—

300

—

µs

EN Low-to-High,

90% of VOUT

Thermal Characteristics

Thermal Shutdown

Die Temperature

TSD

—150

—

°C

Note 3

Die Temperature Hysteresis

TSDHYS

—25

—

°C

Note 3

TEMPERATURE CHARACTERISTICS

Electrical Specifications:

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

VOUT =5.0V.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges

Operating Junction Temperature Range

-40

—

+125

°C

Steady State

Storage Temperature Range

-65

—

+150

°C

Maximum Junction Temperature

—

+150

°C

Transient

Package Thermal Resistances

Thermal Resistance, 8L-MSOP

JA

—

211

—

°C/W

EIA/JESD51-3 Standard

Thermal Resistance, 8L-2x3 TDFN

JA

—

52.5

—

°C/W

EIA/JESD51-3 Standard

DC CHARACTERISTICS (CONTINUED)

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

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.

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

will be limited to under 1A.

Determined by characterization, not production tested.

This is ensured by design.

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