LTC3370 datasheet(10/44 Pages) LINER

10 / 44 page

LTC3372

Rev. A

For more information www.analog.com

TYPICAL PERFORMANCE CHARACTERISTICS

Load Step Burst Mode Operation

Load Step Pulse-Skipping Mode

Load Step Forced Continuous

Mode

Inductor Current at Light Load

Soft Start-Up

(HV Controller) TA = 25°C, unless otherwise noted.

Shutdown (RUN) Threshold

vs Temperature

Undervoltage Lockout Threshold

vs Temperature

TRACK/SS Pull-Up Current

vs Temperature

VIN = 5V

TEMPERATURE (°C)

–75 –50 –25 0

25 50 75 100 125 150

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

3372 G17

RISING

FALLING

VIN = 12V

TEMPERATURE (°C)

–75 –50 –25 0

25 50 75 100 125 150

1.100

1.125

1.150

1.175

1.200

1.225

1.250

1.275

1.300

3372 G18

RISING

FALLING

TEMPERATURE (°C)

–75 –50 –25 0

25 50 75 100 125 150

3.70

3.75

3.80

3.85

3.90

3.95

4.00

4.05

4.10

4.15

4.20

3372 G19

VIN = 12V

VOUT = 3.3V

ILOAD = 100mA to 8A

100µs/DIV

ILOAD

5A/DIV

IIND

5A/DIV

VOUT

AC–COUPLED

100mV/DIV

3372 G21

VIN = 12V

VOUT = 3.3V

ILOAD = 100mA to 8A

100µs/DIV

ILOAD

5A/DIV

IIND

5A/DIV

VOUT

AC–COUPLED

100mV/DIV

3372 G22

VIN = 12V

VOUT = 3.3V

ILOAD = 200µA

5µs/DIV

FORCED

CONTINUOUS

2A/DIV

PULSE-

SKIPPING

2A/DIV

BURST

2A/DIV

3372 G23

VOUT = 5V

VOUT = 3.3V

2ms/DIV

VIN

5V/DIV

VOUT

2V/DIV

3372 G24

VIN = 12V

VOUT = 3.3V

ILOAD = 100mA to 8A

100µs/DIV

ILOAD

5A/DIV

IIND

5A/DIV

VOUT

AC–COUPLED

100mV/DIV

3372 G20

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