SC2620 datasheet(23/26 Pages) SEMTECH

Part #	SC2620

Description	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz

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Manufacturer	SEMTECH [Semtech Corporation]

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 2006 Semtech Corp.

www.semtech.com

SC2620

POWER MANAGEMENT

C15

10

µF

SC2620

GND

SS2

PVIN

SW1

FB2

COMP2

R7

9.76k

BOOST1

C1

10

µF

BOOST2

SW2

L1

1.8

µH

C2

0.1

µF

L2

1.8

µH

C4

0.1

µF

SS1

PGOOD1

COMP1

FB1

C3

22

µF

D1

10BQ015

D2

10BQ015

OUT1

1.2V/2A

R3

24.9k

10.7k

R2

R1

2.15k

C7

22nF

C10

22nF

ROSC

R9

15.0k

C8

390pF

R5

15.8k

C5

390pF

D4

1N4148

L1 & L2: Wurth 744 062 0018

OUT2

3.3V/2A

D3

1N4148

5V VIN

C9

10pF

10.7k

R4

C3: Murata GRM21BR60J 226M

C1 & C15: Murata GRM21BR60J106K

VIN

10

R10

C16

0.1

µF

Figure 16(a). 1.2MHz 5V to 3.3V and 1.2V xDSL Power

Supply. Channel 2 does not start until

Channel 1 output voltage becomes regu-

lated.

Typical Application Circuits

Efficiency

50

55

60

65

70

75

80

85

90

95

00.5

11.5

2

Load Current (A)

VOUT1 = 3.3V

VOUT2 = 1.2V

VIN = 5V

Figures 16(b) and 16(c). Load Transient Response. I

OUT is switched between 0.3A and 2A.

40

µs/div

Upper Trace : OUT1 Voltage, AC Coupled, 0.5V/div

Lower Trace : L

1 Inductor Current, 0.5A/div

(b)

40

µs/div

Upper Trace : OUT2 Voltage, AC Coupled, 0.2V/div

Lower Trace : L

2 Inductor Current, 0.5A/div

(c)

OUT2

OUT1

Similar Part No. - SC2620

Manufacturer	Part #	Datasheet	Description
Semtech Corporation	SC2620	536Kb / 26P	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz
	SC2620EVB	536Kb / 26P	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz
	SC2620SETRT	536Kb / 26P	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz
	SC2620	536Kb / 26P	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz

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Similar Description - SC2620

Manufacturer	Part #	Datasheet	Description
Semtech Corporation	SC2620	536Kb / 26P	Dual 2A, 30V Step-down Regulator with Programmable Frequency up to 1.4MHz
Semtech Corporation	SC4524	1Mb / 21P	Programmable Frequency, 2A Output 30V Step-Down Switching Regulator
Shenzhen Huazhimei Semi...	HM8112	1Mb / 7P	30V 1.2A 1.4MHz Synchronous Step-Down Regulator
Semtech Corporation	SC2440A	4Mb / 28P	Dual 30V Step-Down Switching Regulator with 2A Switches
Shenzhen Huazhimei Semi...	HM1482D	1Mb / 7P	30V 2A Synchronous Step-Down Regulator
Feeling Technology Corp...	FP6186	622Kb / 17P	2A, 23V, 1.4MHz Step-Down Converter
SG Micro Corp	SGM6232	1Mb / 14P	2A, 38V, 1.4MHz Step-Down Converter
Unisonic Technologies	UD24202	257Kb / 5P	2A, 24V, 1.4MHz STEP-DOWN CONVERTER
Global Mixed-mode Techn...	G5699	100Kb / 1P	Dual 1.4MHz, 1A Synchronous Step-Down Regulator
Shenzhen Huazhimei Semi...	HM8114	1Mb / 7P	30V 2A 500KHz Synchronous Step-Down Regulator

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SC2620 Datasheet(PDF) 23 Page - Semtech Corporation

SC2620 Datasheet(HTML) 23 Page - Semtech Corporation

Similar Part No. - SC2620

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