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MP9141

1.8A Step-Down DC to DC Converter

Monolithic Power Systems 

MP9141 – 1.8A STEP-DOWN DC TO DC CONVERTER

MPS CONFIDENTIAL AND PROPRIETARY INFORMATION– INTERNAL USE ONLY

ELECTRICAL CHARACTERISTICS

VIN = 12V, VEN = 5V, TA = +25°C, unless otherwise noted.

Parameter

Symbol Condition

Feedback Voltage

Upper Switch On-Resistance

4.75V ≤ VIN ≤ 20V

Lower Switch On-Resistance

Upper Switch Leakage

Current Limit

VEN = 0V, VSW = 0V

Oscillator Frequency

Short Circuit Frequency

Maximum Duty Cycle

Minimum Duty Cycle

Enable Threshold

VFB = 0V

VFB = 1.0V

VFB = 1.5V

Under Voltage Lockout

Threshold Rising

Under Voltage Lockout

Threshold Hysteresis

Shutdown Supply Current

Operating Supply Current

Thermal Shutdown

VEN = 0V

VEN = 5V, VFB = 1.4V

Min

1.184

2.4

0.7

2.0

Typ

1.222

0.25

10

380

42

90

1.1

2.5

Max

1.258

10

4.2

0

1.4

3.0

Units

V

Ω

Ω

µA

A

kHz

kHz

%

%

V

V

200

mV

25

50

μA

1.0

1.5

mA

160

°C

MP9141 Rev. 1.11

www.MonolithicPower.com

3

4/18/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

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