MP2365 – 3A, 28V, 1.4MHz STEP-DOWN CONVERTER

MP2365 Rev. 0.91

www.MonolithicPower.com

2

7/10/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

PACKAGE REFERENCE

BS

IN

SW

GND

SS

EN

COMP

FB

1

2

3

4

8

7

6

5

TOP VIEW

EXPOSED PAD

CONNECT TO PIN 4

Part Number*

Package

Temperature

MP2365DN

SOIC8N

–40

°C to +85°C

For RoHS compliant packaging, add suffix –LF

(eg. MP2365DN–LF–Z)

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)

Ambient Operating Temp ..........–40

°C to +85°C

Thermal Resistance

(3)

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

Parameters

Symbol Condition

Min

Typ

Max Units

Shutdown Supply Current

20

30

µA

Supply Current

1.3

1.5

mA

Feedback Voltage

4.75V

0.90

0.92

0.94

V

Error Amplifier Voltage Gain

400

V/V

Error Amplifier Transconductance

330

530

730

µA/V

High-Side Switch-On Resistance

100

mΩ

Low-Side Switch-On Resistance

10

Ω

High-Side Switch Leakage Current

0.1

10

µA

Short Circuit Current Limit

6.5

A

Current Sense to COMP Transconductance

6.2

A/V

Oscillation Frequency

1.4

MHz

Short Circuit Oscillation Frequency

220

KHz

Maximum Duty Cycle

65

%

Minimum On Time

130

ns

EN Threshold Voltage

0.9

1.2

1.5

V

Enable Pull Up Current

0.9

1.6

2.3

µA

Under Voltage Lockout Threshold Rising

2.3

2.6

2.9

V

Under Voltage Lockout Threshold Hysteresis

210

mV

Soft-Start Period

10

ms

Thermal Shutdown

160

°C