LTC3621 datasheet(5/20 Pages) AD

Part #	LTC3621

Description	Quad 17V, 1.25A Parallelable Synchronous Step-Down Regulator with Ultralow Quiescent Current

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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5 / 20 page

LTC3644/LTC3644-2

Rev. 0

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

Line Regulation, No Load

Load Regulation

Oscillator Frequency vs

Temperature

Peak Current Limit vs

Temperature

Reference Voltage vs

Temperature

RDS(ON) vs Input Voltage

TA = 25°C, unless otherwise noted.

PMOS

NMOS

INPUT VOLTAGE (V)

10 12 14 16 18

100

200

300

400

500

3644 G09

TEMPERATURE (°C)

–50 –25

100 125

0.8

0.9

1.0

1.1

1.2

3644 G10

TEMPERATURE (°C)

–50 –25

100 125

1.6

1.8

2.0

2.2

2.4

3644 G11

TEMPERATURE (°C)

–50 –25

100 125

597.0

597.5

598.0

598.5

599.0

599.5

600.0

600.5

601.0

601.5

602.0

3644 G12

VOUT = 2.5V

fSW = 1MHz

L = 3.3µH

FORCED CONTINUOUS MODE

INPUT VOLTAGE (V)

0 1 2 3 4 5 6 7 8 9 1011121314151617

–0.5

–0.3

–0.1

0.1

0.3

0.5

3644 G13

VIN = 12V

VOUT = 2.5V

fSW = 1MHz

L = 3.3µH

FORCED CONTINUOUS MODE

LOAD CURRENT (A)

0.25

0.50

0.75

1.25

–0.50

–0.25

0.25

0.50

Load Regulation

3644 G14

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