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LTC3100

3100fa

Maximum Load Current During

Start-Up vs VIN

VINBST (V)

0.7

100

1000

0.9

1.1

0.8

1.2

1.3

3100 G07

VBST = 1.8V, RESISTIVE LOAD

VBST = 1.8V, CONSTANT-CURRENT LOAD

VBST = 3.3V, RESISTIVE LOAD

VBST = 3.3V, CONSTANT-CURRENT LOAD

VBST = 5V, RESISTIVE LOAD

VBST = 5V, CONSTANT-CURRENT LOAD

TYPICAL PERFORMANCE CHARACTERISTICS

Maximum Output Current vs VIN

Burst Mode Threshold

Current vs VIN

Start-Up Voltage vs Temperature

VOUT and IIN During Soft-Start

Output Voltage Ripple in Fixed

Frequency and Burst Mode Operation

TA = 25°C, unless otherwise speciﬁed.

Step-Up DC/DC Converter

No-Load Input Current vs VIN,

Mode = Open, LDO and Buck Off

VINBST (V)

400

600

200

300

100

500

0.5

1.5

4.5

2.5

3.5

3100 G06

VOUT = 1.8V

VOUT = 3.3V

VOUT = 5V

VINBST (V)

1.0

2.5

3.5

3100 G08

1.5

2.0

3.0

4.0

4.5

L = 3.3μH

VOUT = 1.8V

VOUT = 3.3V

VOUT = 5V

TEMPERATURE (°C)

–45

0.70

0.85

–15

0.60

0.65

0.55

0.50

0.80

0.75

–30

3100 G09

3100 G10

500μs/DIV

IIN

200mA/DIV

VBST

1V/DIV

3100 G11

0.5μs/DIV

100mA LOAD

20mV/DIV

20μs/DIV

5mA LOAD

20mV/DIV

VBST COUT = 20μF

VINBST (V)

1.0

100

3.0

180

3100 G05

2.0

1.5

3.5

4.0

2.5

4.5

120

140

160

VOUT = 5V

VOUT = 3.3V

VOUT = 1.8V

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