MP2364DF データシートの表示（PDF） - Monolithic Power Systems

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MP2364DF

Dual 1.5A, 23V, 1.4MHz Step-Down Converter

Monolithic Power Systems 

TM

MP2364 — DUAL 1.5A, 23V, 1.4MHz STEP-DOWN CONVERTER

ELECTRICAL CHARACTERISTICS

VIN = 12V, TA = +25°C, unless otherwise noted.

Parameter

Symbol Condition

Feedback Voltage

Upper Switch-On Resistance

Lower Switch-On Resistance

Upper Switch Leakage

Current Limit (4)

VFB

RDS(ON)1

RDS(ON)2

4.75V ≤ VIN ≤ 23V

VEN = 0V, VSW = 0V

Current Limit Gain

Output Current to Comp Pin GCS

Voltage

Error Amplifier Voltage Gain

Error Amplifier

Transconductance

AVEA

GEA

∆IC = ±10 µA

Oscillator Frequency

Short Circuit Frequency

Soft-Start Pin Equivalent

Output Resistance

fOSC

fSC

VFB = 0V

EN Shutdown Threshold

Voltage

VEN ICC > 100µA

Enable Pull-Up Current

EN UVLO Threshold Rising

EN UVLO Threshold

Hysteresis

IEN

VUVLO

VEN Rising

Supply Current (Shutdown)

IOFF VEN ≤ 0.4V

Supply Current (Quiescent)

ION VEN ≥ 3V

Thermal Shutdown

DMAX

Maximum Duty Cycle

VFB = 0.8V

Minimum On Time

tON

Note:

4) Equivalent output current = 1.5A ≥ 50% Duty Cycle

2.0A ≤ 50% Duty Cycle

Assumes ripple current = 30% of load current.

Slope compensation changes current limit above 40% duty cycle.

Min

0.892

2.5

Typ

0.920

0.18

10

3.0

Max

0.948

10

Units

V

Ω

Ω

µA

A

1.95

A/V

400

V/V

630

930 1230 µA/V

1.4

MHz

210

KHz

9

kΩ

0.7

1.0

1.3

V

1.0

µA

2.37 2.50 2.62

V

210

mV

40

70

µA

2.4

2.8

mA

160

°C

70

%

100

ns

MP2364 Rev. 1.4

www.MonolithicPower.com

3

3/22/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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