MAX1809ETI datasheet(5/17 Pages) MAXIM

Part #	MAX1809ETI

Description	3A, 1MHz, DDR Memory Termination Supply

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Manufacturer	MAXIM [Maxim Integrated Products]

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3A, 1MHz, DDR Memory Termination Supply

_______________________________________________________________________________________

5

LOAD-TRANSIENT RESPONSE

0A

0V

50mV/div

IOUT

5A/div

V(LX)

5V/div

VOUT

(AC-COUPLED)

10

µs/div

VEXTREF = 1.25V, VIN = 3.3V, IOUT = -2A to +2A to -2A

RDROOP 12m

Ω

LINE-TRANSIENT RESPONSE

0V

50mV/div

VIN

2V/div

VOUT

(AC-COUPLED)

20

µs/div

IOUT = 2A, VIN = 5V to 3.3V to 5V

SWITCHING WAVEFORMS (SOURCING)

0V

50mV/div

V(LX)

5V/div

VOUT

(AC-COUPLED)

400ns/div

IOUT = 2A, VIN = 5V

I(LX)

2A/div

0A

SWITCHING WAVEFORMS (SINKING)

0V

50mV/div

V(LX)

5V/div

VOUT

(AC-COUPLED)

400ns/div

IOUT = -2A, VIN = 5V

I(LX)

2A/div

0A

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VOUT = 1.25V, for VIN = 5V: L = 1µH, RTOFF = 130k

Ω; for VIN = 3.3V: L = 0.68µH, RTOFF = 73.2kΩ.)

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