MCP19035 datasheet(3/44 Pages) MICROCHIP

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 2012 Microchip Technology Inc.

DS22326A-page 3

MCP19035

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings †

VIN - VGND........................................................ -0.3V to +30V

VBOOT................................................................ -0.3V to +36V

VHDRV, HDRV Pin................. +VPHASE -0.3V to VBOOT+0.3V

VLDRV, LDRV Pin.....................+ (VGND-0.3V) to (VCC+0.3V)

Max. Voltage on Any Pin ...........+ (VGND-0.3V) to (VCC+0.3V)

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

Maximum Junction Temperature................................. +150°C

ESD protection on all pins (HBM) .................................... 1 kV

ESD protection on all pins (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

the

operational

sections

this

specification is not intended. Exposure to maximum

rating conditions for extended periods may affect

device reliability.

DC ELECTRICAL CHARACTERISTICS

Electrical Specifications

: Unless otherwise noted, VIN = 12V, FSW = 300 kHz, CIN = 1.0 µF, TA = +25°C (for typical

values), TA = -40°C to +125°C (for minimum and maximum).

Parameters

Symbol

Min

Typ

Max

Units

Conditions

Inputs

Input Voltage Range

VIN

4.5

—

UVLO (VIN Rising)

UVLOON

44.2

4.4

UVLO (VIN Falling)

UVLOOFF

3.4

3.6

3.8

UVLO Hysteresis

UVLOHYST

—

600

—

Input Quiescent Current

I(VIN)—

Shutdown Current

IIN_SHDN

—

µA

SHDN = GND.

Internal Voltage Regulator is

also disabled

Linear Regulator

Output Voltage

VCC

4.875

5.125

 VIN < 30V

Output Current

IVCC-OUT

—

6.5V

 VIN < 30V, Note 2

Short-Circuit

Output Current

IVCC-OUT_SC

—

100

VIN = 6V, RLOAD < 0.1

Load Regulation

—

0.1

—

Note 1

Line Regulation

—

0.05

—

Note 1

Dropout Voltage

—

0.75

1.3

IVCC_OUT = 50 mA

Power Supply

Rejection Ratio

PSRR

—

 1000 Hz,

IVCC_OUT = 50 mA

CIN = 0 µF,

CVCC-OUT = 4.7 µF, Note 1

Internal Oscillator

Switching

Frequency

FSW

255

300

345

kHz

See Section 4.4, Internal

Oscillator

Ramp Signal Amplitude

VRAMP

0.911.1

VPP

Note 1

Reference Voltage

Generator

VREF

585

600

615

Note 1:

Ensured by design. Not production tested.

Limited by the maximum power dissipation of the case.

Possibility to be adjusted for high volumes.

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