MCP19035-AAAAESLASHMF datasheet(4/44 Pages) MICROCHIP

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MCP19035

DS22326B-page 4

 2012-2013 Microchip Technology Inc.

Error Amplifier

Gain Bandwidth Product

GBP

6.5

—

MHz

Note 1

Open Loop Gain

AOL

—

Note 1

Input Offset Voltage

VOS

-5

0.1

Note 1

Input Bias Current

(FB Pin)

IBIAS

——

Note 1

Error Amplifier

Sink Current

ISINK

—5—

Note 1

Error Amplifier

Source Current

ISOURCE

—5—

Note 1

PWM Section

Maximum Duty Cycle

DCMAX

—

Note 1

Minimum ON time

tON(MIN)

—

100

 VIN < 30V, Note 1

Soft Start

Soft Start Time

tSS

—8—

Shutdown

Logic Low-to-High

Threshold

SHDNHI

0.85

—

4.5V

 VIN < 30V, VCC goes

from 0V to 5V

Logic High-to-Low

Threshold

SHDNLO

—

0.4

4.5V

 VIN < 30V, VCC goes

from 5V to 0V

Power Good

Threshold High

PGTH-H

—93

% of VREF

Power Good

Threshold Low

PGTH-LOW

—

% of VREF

Power Good

Threshold Hysteresis

PGTH-HYS

—3—

% of VREF

Power Good Delay

tPG-DELAY

—

150

—

VFB = (PGTH-HI + 100 mV) to

(PGTH-LOW – 100 mV)

Power Good Active

Time-Out Period

tPG-TIME-OUT

—

120

—

VFB = (PGTH-HI – 100 mV) to

(PGTH-HI + 100 mV)

MOSFET Drivers

High-Side Driver Pull-up

Resistance

RHI-SOURCE

—2

3.5



VBOOT –VPHASE = 4.5V,

IHDRV = 100 mA, Note 1

High-Side Driver Pull-

Down Resistance

RHI-SINK

—2

3.5



VBOOT –VPHASE = 4.5V,

IHDRV = 100 mA, Note 1

Low-Side Driver Pull-Up

Resistance

RLO-SOURCE

—2

3.5



VCC = 5V, Note 1

Low-Side Driver Pull-

Down Resistance

RLO-SINK

—1

2.5



VCC = 5V, Note 1

HDRV Rise Time

tRH

—15

CLOAD = 1.0 nF, Note 1

HDRV Fall Time

tFH

—15

CLOAD = 1.0 nF, Note 1

LDRV Rise Time

tRL

—10

CLOAD = 1.0 nF, Note 1

DC ELECTRICAL CHARACTERISTICS (CONTINUED)

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

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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