MP2112 데이터 시트보기 (PDF) - Monolithic Power Systems

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MP2112

1MHz, 1A Synchronous Step-Down Converter

Monolithic Power Systems 

TM

MP2112 – 1MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER

PACKAGE REFERENCE

TOP VIEW

FB 1

6 EN

GND 2

5 VINA

SW 3

EXPOSED PAD

ON BACKSIDE

4 VINB

MP2112_PD01_QFN6

Part Number*

MP2112DQ

Package

QFN6

(3mm x 3mm)

Temperature

–40°C to +85°C

* For Tape & Reel, add suffix –Z (eg. MP2112DQ–Z)

For Lead Free, add suffix –LF (eg. MP2112DQ–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

QFN6 (3x3)............................. 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 (4)

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

Parameter

Symbol Condition

Min

Typ

Max

Supply Current

Shutdown Current

IN Undervoltage Lockout

Threshold

VEN = VIN, VFB = 0.65V

VEN = 0V, VIN = 6V

Rising Edge

440

600

0.10

1

2.15 2.30 2.40

IN Undervoltage Lockout

Hysteresis

55

Regulated FB Voltage

FB Input Bias Current

VFB TA = +25°C

–40°C ≤ TA ≤ +85°C

VFB = 0.65V

0.588

0.582

–50

0.600

0.600

0.5

0.612

0.618

+50

PFET On Resistance

NFET On Resistance

ISW = 100mA

ISW = –100mA

0.42

0.26

SW Leakage Current

PFET Current Limit

VEN = 0V, VIN = 6V,

VSW = 0V or 6V

Duty Cycle = 100%,

Current Pulse Width < 1ms

–1

+1

1.2

1.6

2.1

Oscillator Frequency

fOSC

0.85 1.05 1.25

Thermal Shutdown Trip

Threshold

145

EN Trip Threshold

EN Input Current

–40°C ≤ TA ≤ +85°C

VIN = 0V to 6V

0.3

0.96

1.5

–1

1

Note:

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

Units

µA

µA

V

mV

V

nA

Ω

Ω

µA

A

MHz

°C

V

µA

MP2112 Rev. 1.2

www.MonolithicPower.com

2

3/6/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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