MP2105 datasheet(2/8 Pages) MPS

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MP2105 – 1MHz 800mA SYNCHRONOUS STEP-DOWN CONVERTER

MP2105 Rev. 1.3

www.MonolithicPower.com

5/11/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

PACKAGE REFERENCE

Part Number*

Package

Temperature

MP2105DJ

TSOT23-5

–40

°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2105DJ–Z)

For Lead Free, add suffix –LF (eg. MP2105DJ–LF–Z)

ABSOLUTE MAXIMUM RATINGS (1)

VIN to GND .................................. –0.3V to +6.5V

VSW to GND........................... –0.3V to VIN +0.3V

VFB, VEN to GND.......................... –0.3V to +6.5V

Junction Temperature.............................+150

°C

Lead Temperature ..................................+260

°C

Storage Temperature .............–65

°C to +150°C

Recommended Operating Conditions

(2)

Supply Voltage VIN............................. 2.5V to 6V

Output Voltage VOUT .......................... 0.6V to 6V

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

°C to +85°C

Thermal Resistance

(3)

θJA

θJC

TSOT23-5.............................. 220 .... 110..

°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 = VEN = 3.6V, TA = +25°C, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

Supply Current

VEN = VIN, VFB = 0.65V

440

600

µA

Shutdown Current

VEN = 0V, VIN = 6V

0.10

µA

IN Undervoltage Lockout

Threshold

Rising Edge

2.15

2.30

2.40

IN Undervoltage Lockout

Hysteresis

TA = +25°C

0.588

0.600

0.612

Regulated FB Voltage

VFB

–40°C ≤ TA ≤ +85°C

0.582

0.600

0.618

FB Input Bias Current

VFB = 0.65V

–50

0.5

+50

PFET On Resistance

ISW = 100mA

0.42

Ω

NFET On Resistance

ISW = –100mA

0.26

Ω

SW Leakage Current

VEN = 0V, VIN = 6V,

VSW = 0V or 6V

–1

µA

PFET Current Limit

Duty Cycle = 100%,

Current Pulse Width < 1ms

1.2

1.6

2.1

Oscillator Frequency

fOSC

0.85

1.05

1.25

MHz

Thermal Shutdown Trip

Threshold

145

°C

EN Trip Threshold

–40°C ≤ TA ≤ +85°C

0.3

0.96

1.5

EN Input Current

VEN = 0V to 6V

–1

µA

Notes:

4) 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.

TOP VIEW

GND

MP2105_PD01_TSOT23-5

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