MAX1638 datasheet(5/16 Pages) MAXIM

Part #	MAX1638

Description	High-Speed Step-Down Controller with Synchronous Rectification for CPU Power

Download	16 Pages

Scroll/Zoom	100%

Manufacturer	MAXIM [Maxim Integrated Products]

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

Logo

5 / 16 page

High-Speed Step-Down Controller with

Synchronous Rectification for CPU Power

_______________________________________________________________________________________

5

FOLDBACK CURRENT LIMIT

VO = 2.0V NOMINAL

A: VOUT = 0.5V/div

B: INDUCTOR CURRENT, 5A/div

A

B

10

µs/div

START-UP WAVEFORMS

A: VOUT = 0.5V/div

B: INDUCTOR CURRENT, 5A/div

A

B

400

µs/div

1

µs/div

SWITCHING WAVEFORMS

C

0

VIN = 5V, VOUT = 2.5V, LOAD = 5A

A: LX, 5V/div

C: INDUCTOR CURRENT,

B: VOUT, 20mV/div, AC COUPLED

5A/div

B

A

LOAD-TRANSIENT RESPONSE

WITHOUT GLITCHCATCHER (COUT = 880µF)

VIN = 5V, VOUT = 2.0V, LOAD = 14A, 3A/µs

A: VOUT, 50mV/div, AC COUPLED

B: INDUCTOR CURRENT, 10A/div

A

B

10

µs/div

LOAD-TRANSIENT RESPONSE

WITHOUT GLITCHCATCHER (COUT = 440µF)

VIN = 5V, VOUT = 2.0V, LOAD = 14A, 3A/µs

A: VOUT, 100mV/div, AC COUPLED

B: INDUCTOR CURRENT, 10A/div

A

B

10

µs/div

LOAD-TRANSIENT RESPONSE

WITH GLITCHCATCHER

COUT = 440µF, VIN = 5V, VOUT = 2.0V, LOAD = 14A, 30A/µs

A: VOUT, 100mV/div,

C: NDRV, 5V/div

AC COUPLED

D: INDUCTOR CURRENT,

B: PDRV, 5V/div

10A/div

A

D

B

C

10

µs/div

__________________________________________Typical Operating Characteristics

(TA = +25°C, using the MAX1638 evaluation kit, unless otherwise noted.)

100

90

30

0.1

10

100

EFFICIENCY vs. OUTPUT CURRENT

50

40

80

70

60

OUTPUT CURRENT (A)

1

VOUT = 2.0V

VOUT = 1.3V

VOUT = 3.5V

5.094

1.094

0.001

0.1

1

0.01

10

REFERENCE VOLTAGE

vs. OUTPUT CURRENT

1.594

2.094

OUTPUT CURRENT (mA)

2.594

3.594

3.094

4.094

4.594

SOURCING

CURRENT

SINKING

CURRENT

50

55

0

MAXIMUM DUTY CYCLE

vs. SWITCHING FREQUENCY

65

60

70

SWITCHING FREQUENCY (kHz)

85

95

90

75

80

200

800

1000

1200

100

600

400

Similar Part No. - MAX1638

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX163	563Kb / 14P	CMOS 12-Bit A/D Converters With Track-and-Hold
	MAX163-MAX167	563Kb / 14P	CMOS 12-Bit A/D Converters With Track-and-Hold
	MAX1630	237Kb / 28P	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers 19-0480; Rev 3; 4/97
	MAX1630A	288Kb / 29P	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers 19-3518; Rev 1; 8/05
	MAX1630AEAI	288Kb / 29P	Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers Rev 1; 8/05

More results

Similar Description - MAX1638

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	MAX1639	108Kb / 13P	High-Speed Step-Down Controller with Synchronous Rectification for CPU Power 19-1337; Rev 0; 2/98
	MAX1624	223Kb / 24P	High-Speed Step-Down Controllers with Synchronous Rectification for CPU Power 19-1227; Rev 1; 6/97
	MAX798	89Kb / 12P	High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power Rev 0; 12/96
	MAX797H	59Kb / 8P	High-Voltage, Step-Down Controller with Synchronous Rectifier for CPU Power Rev 0; 7/97
STMicroelectronics	L6910	453Kb / 21P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
	L6732	900Kb / 37P	Adjustable step-down controller with synchronous rectification
	L6910	682Kb / 29P	ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
	L6730	1Mb / 52P	Adjustable step-down controller with synchronous rectification
	L6730C	1Mb / 50P	Adjustable step-down controller with synchronous rectification
	L6732_0906	823Kb / 36P	Adjustable step-down controller with synchronous rectification

More results

MAX1638 Datasheet(PDF) 5 Page - Maxim Integrated Products

MAX1638 Datasheet(HTML) 5 Page - Maxim Integrated Products

Similar Part No. - MAX1638

Similar Description - MAX1638

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Datasheet Download

Link URL