MPQ2128 – 3MHz, 1A, SYNCHRONOUS, STEP-DOWN CONVERTER

MPQ2128 Rev. 1.1

www.MonolithicPower.com

3

4/1/2013

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ELECTRICAL CHARACTERISTICS

(5)

Parameters

Condition

Min

Typ

Max

Units

Supply Current

350

750

μA

Shutdown Current

0.01

1.2

μA

IN Under Voltage Lockout Threshold

Rising Edge

1.75

2.1

2.3

V

IN Under Voltage Lockout Hysteresis

250

mV

Regulated FB Voltage

0.582

0.594

0.606

V

–40°C

≤ T

j

≤ 125°C

0.574

0.594

0.614

V

FB Input Bias Current

-200

200

nA

PFET Current Limit

Duty Cycle

≤ 40%

Tj = 25°C

1.8

A

-40°C

≤T

j

≤125°C

1.2

PFET On-Resistance

200

m

Ω

NFET On-Resistance

150

m

Ω

SW Leakage Current

–3

3

μA

EN High Threshold

–40°C

≤ T

J

≤125°C

1.6

V

EN Low Threshold

–40°C

≤ T

J

≤125°C

0.4

V

Internal Soft-Start Time

100

µs

Oscillator Frequency

2.2

2.8

3.4

MHz

Thermal Shutdown Threshold

Hysteresis=20°C

150

°C

Note:

5) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.