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LPS3015

High Voltage Input Integrated Switch Step-Down Regulator

Microchip Technology 

MCP16301

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VIN, SW ............................................................... -0.5V to 40V

BOOST – GND ................................................... -0.5V to 46V

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 +85°C

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

ESD Protection On All Pins:

HBM ................................................................. 3 kV

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

† 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 = 12V, VBOOST - VSW = 3.3V,

VOUT = 3.3V, IOUT = 100 mA, L = 15 µH, COUT = CIN = 2 X 10 µF X7R Ceramic Capacitors

Boldface specifications apply over the TA range of -40oC to +85oC.

Parameters

Sym

Min

Typ

Max Units

Conditions

Input Voltage

Feedback Voltage

Output Voltage Adjust Range

Feedback Voltage

Line Regulation

VIN

VFB

VOUT

(ΔVFB/VFB)/ΔVIN

—

0.784

2.0

—

4.0

0.800

—

0.01

30

0.816

15.0

0.1

V Note 1

V

V Note 2

%/V VIN = 12V to 30V;

Feedback Input Bias Current

Undervoltage Lockout Start

Undervoltage Lockout Stop

Undervoltage Lockout

Hysteresis

IFB

-250

±10

UVLOSTRT

—

3.5

UVLOSTOP

2.4

3.0

UVLOHYS

—

0.4

+250

4.0

—

—

nA

V VIN Rising

V VIN Falling

V

Switching Frequency

fSW

425

500

550

kHz IOUT = 200 mA

Maximum Duty Cycle

DCMAX

90

95

—

% VIN = 5V; VFB = 0.7V;

IOUT = 100 mA

Minimum Duty Cycle

DCMIN

—

1

—

%

NMOS Switch On Resistance

RDS(ON)

—

0.46

—

Ω VBOOST - VSW = 3.3V

NMOS Switch Current Limit

IN(MAX)

—

1.3

—

A VBOOST - VSW = 3.3V

Quiescent Current

IQ

—

2

7.5

mA VBOOST= 3.3V; Note 3

Quiescent Current - Shutdown

IQ

—

7

10

µA VOUT = EN = 0V

Maximum Output Current

IOUT

600

—

—

mA Note 1

EN Input Logic High

VIH

1.4

—

—

V

EN Input Logic Low

VIL

—

—

0.4

V

EN Input Leakage Current

IENLK

—

0.05

1.0

µA VEN = 12V

Soft-Start Time

tSS

—

150

—

µS EN Low to High,

90% of VOUT

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: For VIN < VOUT, VOUT will not remain in regulation.

3: VBOOST supply is derived from VOUT.

© 2011 Microchip Technology Inc.

DS25004A-page 3

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