LTC3530 datasheet(4/16 Pages) LINER

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LTC3530

3530fb

RBURST (kΩ)

125

225

3530 G04

175

325

275

425

375

500

475

ENTER Burst Mode

OPERATION

LEAVE Burst Mode

OPERATION

TEMPERATURE (°C)

–45

1.78

1.80

1.82

3530 G05

1.76

1.74

–5

–25

115

1.72

1.70

1.84

TEMPERATURE (°C)

–55

–1%

–2%

–3%

–4%

–5%

–15

125

3530 G06

–35

85 105

VIN = VOUT = 3.3V

TEMPERATURE (°C)

–45

1.05

1.07

1.11

1.13

1.15

1.25

1.19

–5

3530 G07

1.09

1.21

1.23

1.17

–25

95 115

TEMPERATURE (°C)

–45

1.215

1.220

1.225

115

3530 G08

1.210

1.205

1.200

–25

–5

50ns/DIV

3530 G09

SW1

2V/DIV

SW2

2V/DIV

VIN = 2.9V

VOUT = 3.3V AT 500mA

50ns/DIV

3530 G10

SW1

2V/DIV

SW2

2V/DIV

VIN = 3.3V

VOUT = 3.3V AT 500mA

50ns/DIV

3530 G11

SW1

2V/DIV

SW2

2V/DIV

VIN = 4.2V

VOUT = 3.3V AT 500mA

1μs/DIV

3530 G12

VOUT = 3.3V

20mV/DIV

AC COUPLED

COUT = 22μF, X5R CERAMIC

VIN = 4.2V

VIN = 3.3V

VIN = 2.7V

Automatic Burst Mode Threshold

vs RBURST

Minimum Start Voltage

vs Temperature

Average Input Current Limit

vs Temperature

Frequency Change vs Temperature

Feedback Voltage vs Temperature

Switch Pins Before Entering

Boost Mode

TA = 25°C, unless otherwise speciﬁed.

Switch Pins in Buck-Boost Mode

Switch Pins Entering

Buck-Boost Mode

LTC3530 Output Ripple

500mA Load

TYPICAL PERFORMANCE CHARACTERISTICS

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