MCP14628T-E/MF【PDF 3/24 页】IC MOSFET DVR 2A SYNC BUCK 8-DFN

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MCP14628

1.0

ELECTRICAL

CHARACTERISTICS

? 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

Absolute Maximum Ratings ?

V CC , Device Supply Voltage............................. -0.3V to +7.0V

operational sections of this specification is not intended.

Exposure to maximum rating conditions for extended periods

may affect device reliability.

V BOOT , BOOT Voltage.................................... -0.3V to +36.0V

V PHASE , Phase Voltage........... V BOOT - 7.0V to V BOOT + 0.3V

V FCCM , FCCM Voltage ........................... -0.3V to V CC + .0.3V

V PWM , PWM Voltage ............................... -0.3V to V CC + 0.3V

V UGATE , UGATE Voltage ....... V PHASE - 0.3V to V BOOT + 0.3V

V LGATE , LGATE Voltage .......................... -0.3V to V CC + 0.3V

ESD Protection on all Pins ....................................2 kV (HBM)

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, V CC = 5V, T J = -40°C to +125°C

Parameters

Sym

Min

Typ

Max

Units

Conditions

V CC Supply Requirements

Recommended Operating Range

V CC

4.5

5.0

5.5

V

Bias Supply Voltage

I VCC

—

80

—

μA

PWM pin floating,

V FCCM = 5V

UVLO (Rising V CC )

UVLO (Falling V CC )

Hysteresis

—

2.40

—

3.40

2.90

500

3.90

—

—

V

V

mV

PWM Input Requirements

PWM Input Current

PWM Rising Threshold

PWM Falling Threshold

Tri-State Shutdown Hold-off Time

I PWM

t TSSHD

—

—

0.70

3.50

100

250

-250

1.00

3.80

175

—

—

1.30

4.10

250

μA

μA

V

V

ns

V PWM = 5V

V PWM = 0V

T A = +25°C, Note 2

FCCM input Requirements

FCCM Low Threshold

FCCM High Threshold

0.50

—

—

—

—

2.0

V

V

Output Requirements

High Drive Source Resistance

—

1.0

2.5

Ω

500 mA source current,

Note 1

High Drive Sink Resistance

—

1.0

2.5

Ω

500 mA sink current,

Note 1

High Drive Source Current

High Drive Sink Current

Low Drive Source Resistance

—

—

—

2.0

2.0

1

—

—

2.5

A

A

Ω

Note 1

Note 1

500 mA source current,

Note 1

Low Drive Sink Resistance

—

0.5

1.0

Ω

500 mA sink current,

Note 1

Low Drive Source Current

Low Drive Sink Current

—

—

2.0

3.5

—

—

A

A

Note 1

Note 1

Note 1:

2:

Parameter ensured by design, not production tested.

See Figure 4-1 for parameter definition.

? 2008 Microchip Technology Inc.

DS22083A-page 3

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