MAX5951ETJ datasheet(9/25 Pages) MAXIM

Part #	MAX5951ETJ

Description	12V/5V Input Buck PWM Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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12V/5V Input Buck PWM Controller

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9

EFFICIENCY vs. LOAD CURRENT

ILOAD (A)

0.8

0.6

0.4

0.2

10

20

30

40

50

60

70

80

90

100

0

01.0

VPWM_IN = 12V

VPWM_IN = 16V

VOUT = 3.3V

VPWM_IN = 5V

VPWM_IN = 8V

EFFICIENCY vs. LOAD CURRENT

ILOAD (A)

0.8

0.6

0.4

0.2

10

20

30

40

50

60

70

80

90

100

0

01.0

VPWM_IN = 12V

VPWM_IN = 16V

VOUT = 2.5V

VPWM_IN = 5V

VPWM_IN = 8V

EFFICIENCY vs. LOAD CURRENT

ILOAD (A)

2.0

1.5

1.0

0.5

10

20

30

40

50

60

70

80

90

100

0

2.5

VIN = 12V

VIN = 16V

VOUT = 1.2V

VIN = 5V

VIN = 8V

LOAD-TRANSIENT RESPONSE

MAX5951 toc23

400

µs/div

IOUT1

1A/div

VOUT1

50mV/div

AC-COUPLED

LOAD-TRANSIENT RESPONSE

MAX5951 toc24

400

µs/div

IOUT1

1A/div

1.25A

0A

VOUT1

20mV/div

AC-COUPLED

Typical Operating Characteristics (continued)

(Typical Operating Circuits. VIN = 12V or VIN = VREG = 5V, VDREG = VREG, VPGND = 0V, VSYNCIN = 0V, RRT = 49.9k

Ω, RILIM = 48.7kΩ,

CREG = 2.2µF, TA = +25°C.)

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