EV2354DS-00A 데이터 시트보기 (PDF) - Monolithic Power Systems

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EV2354DS-00A

2A, 23V, 380KHz Step-Down Converter

Monolithic Power Systems 

TM

MP2354 – 2A, 23V, 380KHz STEP-DOWN CONVERTER

PACKAGE REFERENCE

TOP VIEW

SYNC 1

BST 2

VIN 3

LX 4

8 RUN

7 COMP

6 FB

5 GND

MP2354_PD01-SOIC8

Part Number* Package

Temperature

MP2354DS

SOIC8

–40°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2354DS–Z)

For Lead Free, add suffix –LF (eg. MP2354DS–LF–Z)

ABSOLUTE MAXIMUM RATINGS (1)

Supply Voltage (VIN) .................................... 25V

Switch Voltage (VLX) ....................... –1V to +26V

Bootstrap Voltage (VBST)....................... VLX + 6V

Feedback Voltage (VFB) ................... –0.3 to +6V

Enable/UVLO Voltage (VRUN)........... –0.3 to +6V

Comp Voltage (VCOMP) ..................... –0.3 to +6V

Sync Voltage (VSYNC) ....................... –0.3 to +6V

Junction Temperature...............................150°C

Lead Temperature ....................................260°C

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

Recommended Operating Conditions (2)

Input Voltage (VIN) ......................... 4.75V to 23V

Operating Temperature .............–40°C to +85°C

Thermal Resistance (3) θJA θJC

SOIC8.................................... 105 ..... 50... °C/W

Notes:

1) Exceeding these ratings may damage the device.

2) The device is not guaranteed to function outside of its

operating conditions.

3) Measured on approximately 1” square of 1 oz copper.

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

VRUN = 0V, VLX = 0V

Current Sense

Transconductance

Output Current to Comp Pin

GCS

Voltage

Error Amplifier Voltage Gain AVEA

Error Amplifier

Transconductance

GEA ∆IC = ±10µA

Oscillator Frequency

Short Circuit Frequency

Sync Frequency

fS

VFB = 0V

Sync Drive 0V to 2.7V

Maximum Duty Cycle

Minimum Duty Cycle

DMAX

DMIN

VFB = 1.0V

VFB = 1.5V

Min

1.198

2.7

Typ

1.222

0.18

10

0

3.4

Max

1.246

10

Units

V

Ω

Ω

µA

A

1.95

A/V

400

V/V

500

700 1000 µA/V

342

380

418 KHz

35

KHz

445

600 KHz

90

%

0

%

MP2354 Rev. 1.4

www.MonolithicPower.com

2

1/6/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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