MP2108 datasheet(2/12 Pages) MPS

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MP2108 – 2A, 6V, 740KHz SYNCHRONOUS BUCK CONVERTER

MP2108 Rev 1.1

www.MonolithicPower.com

10/2/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

PACKAGE REFERENCE

BST

VIN

PGND

SGND

RUN

VREF

COMP

TOP VIEW

Part Number*

Package

Temperature

MP2108DK

MSOP10

–40

°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2108DK–Z)

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

MP2108DK–LF–Z)

TOP VIEW

BST

VIN

PGND

SGND

RUN

VREF

COMP

EXPOSED PAD

ON BACKSIDE

Part Number**

Package***

Temperature

MP2108DQ

QFN10

(3mm x 3mm)

–40

°C to +85°C

***

For Tape & Reel, add suffix –Z (eg. MP2108DQ–Z)

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

MP2108DQ–LF–Z)

Recommended for output currents higher than 1.5A

ABSOLUTE MAXIMUM RATINGS

(1)

Input Supply Voltage VIN ............................. 6.5V

LX Voltage VLX ..................... –0.3V to VIN + 0.3V

BST to LX Voltage .........................–0.3V to +6V

Voltage on All Other Pins............... –0.3V to +6V

Storage Temperature...............–55

°C to +150°C

Recommended Operating Conditions

(2)

Input Supply Voltage VIN ...................... 2.6V to 6

Output Voltage VOUT...........................0.9V to 5V

Operating Temperature..............–40

°C to +85°C

Thermal Resistance

(3)

θJA

θJC

MSOP10 ................................ 150 ..... 65...

°C/W

QFN10 (3mm x 3mm)............. 50 ...... 12...

°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 = 5.0V, TA = +25°C, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

Input Voltage Range

VIN

2.6

Input Undervoltage Lockout

2.2

Input Undervoltage Lockout

Hysteresis

100

Shutdown Supply Current

VRUN ≤ 0.3V

0.5

1.0

µA

Operating Supply Current

VRUN > 2V, VFB = 1.1V

1.2

1.8

VREF Voltage

VREF

VIN = 2.6V to 6V

2.4

RUN Input Low Voltage

VIL

0.4

RUN Input High Voltage

VHL

1.5

RUN Hysteresis

100

RUN Input Bias Current

µA

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