LTC3417AEDHC(RevA) 데이터 시트보기 (PDF) - Linear Technology

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LTC3417AEDHC
(Rev.:RevA)

Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator

Linear Technology 

LTC3417A

TYPICAL PERFOR A CE CHARACTERISTICS

OUT1 Burst Mode Operation

OUT1 Pulse Skipping

Mode Operation

VOUT

20mV/DIV

VOUT

20mV/DIV

OUT1 Forced Continuous

Mode Operation

VOUT

20mV/DIV

IL

250mA/DIV

IL

250mA/DIV

IL

250mA/DIV

VIN = 3.6V

2µs/DIV

VOUT = 1.8V

ILOAD = 100mA

REFER TO FIGURE 4

3417 G01

VIN = 3.6V

2µs/DIV

VOUT = 1.8V

ILOAD = 100mA

REFER TO FIGURE 4

3417 G02

VIN = 3.6V

2µs/DIV

VOUT = 1.8V

ILOAD = 100mA

REFER TO FIGURE 4

3417 G03

OUT2 Burst Mode Operation

OUT2 Pulse Skipping

Mode Operation

VOUT

20mV/DIV

VOUT

20mV/DIV

IL

250mA/DIV

VIN = 3.6V

2µs/DIV

VOUT = 2.5V

ILOAD = 60mA

REFER TO FIGURE 4

IL

250mA/DIV

3417 G04

VIN = 3.6V

2µs/DIV

VOUT = 2.5V

ILOAD = 60mA

REFER TO FIGURE 4

OUT2 Forced Continuous

Mode Operation

VOUT

20mV/DIV

IL

250mA/DIV

3417 G05

VIN = 3.6V

2µs/DIV

VOUT = 2.5V

ILOAD = 60mA

REFER TO FIGURE 4

3417 G06

OUT1 Efficiency vs Load Current

100 VIN = 2.5V

95 VOUT = 1.8V

90

85

80

75

70

65

60

0.001

Burst Mode

OPERATION

PULSE SKIP

FORCED

CONTINUOUS

REFER TO FIGURE 4

0.01

0.1

1

10

LOAD CURRENT (A)

3417 G07

4

OUT2 Efficiency vs Load Current

100

VIN = 3.6V

95 VOUT = 2.5V

90

85

80

75

70

65

60

0.001

Burst Mode

OPERATION

PULSE SKIP

FORCED

CONTINUOUS

REFER TO FIGURE 4

0.01

0.1

1

10

LOAD CURRENT (A)

3417 G08

OUT1 Efficiency vs VIN

(Burst Mode Operation)

100 VOUT = 1.8V

95

ILOAD = 460mA

90

ILOAD = 1.4A

85

80

75

REFER TO FIGURE 4

70

2 2.5 3 3.5 4 4.5 5 5.5

VIN (V)

3417 G09

3417afa

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