EV2355DN-00A Просмотр технического описания (PDF) - Monolithic Power Systems

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EV2355DN-00A

3A, 23V, 380KHz Step-Down Converter

Monolithic Power Systems 

TM

MP2355 – 3A, 23V, 380KHz STEP-DOWN CONVERTER

PACKAGE REFERENCE

TOP VIEW

SS 1

BST 2

VIN 3

LX 4

8 RUN

7 COMP

6 FB

5 GND

EXPOSED PAD

ON BACKSIDE

CONNECT TO PIN 5

MP2355_PD01-SOIC8N

Part Number* Package

Temperature

MP2355DN

SOIC8N

(Exposed Pad)

–40°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2355DN–Z)

For RoHS compliant packaging, add suffix –LF (eg.

MP2355DN –LF–Z)

ABSOLUTE MAXIMUM RATINGS (1)

Supply Voltage VIN....................... –0.3V to +25V

Switch Voltage VLX....................... –0.3V to +26V

Boost Voltage VBST ..........VLX – 0.3V to VLX + 6V

All Other Pins................................. –0.3V 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

SOIC8N .................................. 50 ...... 10... °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

Shutdown Supply Current

VRUN = 0V

Supply Current

VRUN = 2.8, VFB = 1.5V

Feedback Voltage

VFB

4.75V ≤ VIN ≤ 23V,

VCOMP < 2V

Error Amplifier Voltage Gain AVEA

Error Amplifier

Transconductance

GEA ∆ICOMP = ±10µA

High-Side Switch-On

Resistance

RDS(ON)1

Low-Side Switch-On

Resistance

RDS(ON)2

High-Side Switch Leakage

Current

Current Limit (4)

VRUN = 0V, VLX = 0V

Current Sense to COMP

Transconductance

GCS

Oscillation Frequency

fS

Short Circuit Oscillation

Frequency

VFB = 0V

Maximum Duty Cycle

Minimum Duty Cycle

EN Shutdown Threshold

Voltage

DMAX

DMIN

VFB = 1.0V

VFB = 1.5V

Min

1.194

500

Typ

20

1.0

1.222

400

800

Max

30

1.2

1.250

1120

Units

µA

mA

V

V/V

µA/V

95

mΩ

10

Ω

0

10

µA

3.7

4.3

A

3.8

A/V

330

380

430 KHz

20

35

50

KHz

90

%

0

%

0.9

1.2

1.5

V

MP2355 Rev. 1.5

www.MonolithicPower.com

2

5/1/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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