MOS6020 데이터 시트보기 (PDF) - Microchip Technology

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MOS6020

24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication

Microchip Technology 

MCP16321/2

DC CHARACTERISTICS (CONTINUED)

Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VIN = 12V, VOUT = 3.3V, IOUT = 300 mA,

L = 4.7 µH, COUT = 2x22 µF, CIN = 2x10 µF. Boldface specifications apply over the TJ range of -40°C to +125°C.

Parameters

Sym

Min

Typ

Max

Units Conditions

PFM Mode Feedback

EN Input Characteristics

VFB-PFM

—

VOUT + 1%

—

V

EN Input Logic High

EN Input Logic Low

EN Input Hysteresis

EN Input Leakage Current

Soft-Start Time

Switching Characteristics

VIH

VIL

VEN-HYST

IENLK

tSS

2.2

—

—

—

—

480

—

3.5

—

-1.5

—

4

—

V

0.8

V

—

mV

—

µA VEN = 5V

—

µA VEN = 0V

—

ms

Switching Frequency

fSW

0.9

1

1.1

MHz Open Loop VFB

Low

Maximum Duty Cycle

DCMAX

95

97

99

% Open Loop VFB

Low

Note 1

Minimum Duty Cycle

—

7

—

%

NMOS Low-Side

Switch On Resistance

Low-Side RDS(ON)

—

120

—

mΩ

NMOS High-Side

Switch On Resistance

NMOS High-Side

Switch Current Limit

High-Side

—

180

RDS(ON)

IN(MAX)

1.4

1.8

2.4

2.8

—

mΩ

2.4

A MCP16321

3.4

A MCP16322

PG Output Characteristics

PG Low-level

Output Voltage

PGIL

—

—

0.01

V IPG = -0.3 mA

PG High-Level Output Leak-

age Current

IPGLK

—

0.5

—

µA VPG = 5V

PG Release Timer

tPG

—

10

—

ms

VOUT Undervoltage Threshold

VOUT-UV

91% VOUT 93% VOUT 95% VOUT

VOUT Undervoltage

Hysteresis

VOUT-UV_HYST

—

1.5% VOUT

—

VOUT Overvoltage

Threshold

VOUT-OV

—

103% VOUT

—

VOUT Overvoltage

Hysteresis

VOUT-OV_HYST

—

1% VOUT

—

Thermal Characteristics

Thermal Shutdown

Die Temperature

TSD

—

170

—

°C

Die Temperature

Hysteresis

TSDHYS

—

10

—

°C

Note 1: Regulator SW pin is forced off for 240 ns every 8 cycles to ensure the BOOST cap is replenished.

DS22285A-page 4

© 2011 Microchip Technology Inc.

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