MP2303DN datasheet(2/12 Pages) MPS

2 / 12 page

MP2303 – 3A, 28V, 340KHz SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER

INITIAL RELEASE – SPECIFICATIONS SUBJECT TO CHANGE

MP2303 Rev. 0.91

www.MonolithicPower.com

3/10/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

PACKAGE REFERENCE

Part Number*

Package

Temperature

MP2303DN

SOIC8N

(Exposed Pad)

–40°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2303DN–Z)

For Lead Free, add suffix –LF (eg. MP2303DN–LF–Z)

ABSOLUTE MAXIMUM RATINGS

(1)

Supply Voltage VIN....................... –0.3V to +30V

Switch Voltage VSW................. –1V to VIN + 0.3V

Boost Voltage VBS..........VSW – 0.3V to VSW + 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 28V

Output Voltage VOUT ........................ 0.8V to 25V

Ambient 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

(4)

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

Parameter

Symbol Condition

Min

Typ

(4)

Max

Units

Shutdown Supply Current

VEN = 0V

0.3

3.0

µA

Supply Current

VEN = 2.7V, VFB = 1.0V

1.3

1.5

4.75V

≤ VIN ≤ 28V,

TA = +25°C

0.780

0.800

0.820

Feedback Voltage

VFB

–40

°C ≤ TA ≤ +85°C

0.772

0.828

OVP Threshold Voltage

0.90

0.95

1.00

Error Amplifier Voltage Gain

AEA

400

V/V

Error Amplifier Transconductance

GEA

∆IC = ±10µA

550

820

1100

µA/V

High-Side Switch-On Resistance

RDS(ON)1

120

mΩ

Low-Side Switch-On Resistance

RDS(ON)2

120

mΩ

High-Side Switch Leakage Current

VEN = 0V, VSW = 0V

µA

Upper-Switch Current Limit

4.3

6.3

Lower-Switch Current Limit

From Drain to Source

1.25

COMP to Current Sense

Transconductance

GCS

A/V

TA = +25°C

300

340

380

KHz

Oscillation Frequency

Fosc1

–40

°C ≤ TA ≤ +85°C

270

400

KHz

Short Circuit Oscillation Frequency

Fosc2

VFB = 0V

110

KHz

Maximum Duty Cycle

DMAX

VFB = 0.7V

Minimum On-Time

220

EN Shutdown Threshold Voltage

VEN Rising

1.1

1.5

2.0

GND

COMP

TOP VIEW

MP2303_PD01_SOIC8N

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