LTC1708EG-PG 查看數據表（PDF） - Linear Technology

零件编号

产品描述 (功能)

生产厂家

LTC1708EG-PG

Dual Adjustable 5-Bit VID High Efficiency, 2-Phase Current Mode Synchronous Buck DC/DC Controller

Linear Technology 

LTC1708-PG

TYPICAL PERFOR A CE CHARACTERISTICS

Load Regulation

0.0

–0.1

FCB = 0V

VIN = 15V

FIGURE 1

VOUT2

–0.2

–0.3

–0.4

0

1

2

3

4

5

LOAD CURRENT (A)

1708 G13

Maximum Current Sense

Threshold vs Temperature

80

78

76

74

72

70

–50 –25

0 25 50 75

TEMPERATURE (°C)

100 125

1708 G17

Load Step (Figure 13)

VITH vs VRUN/SS

2.5

VEAIN = 0.7V

2.0

1.5

1.0

0.5

0

0

1

2

3

4

VRUN/SS (V)

56

1708 G14

SENSE Pins Total Source Current

100

50

0

–50

–100

0

2

4

6

VSENSE COMMON MODE VOLTAGE (V)

1708 G15

Dropout Voltage vs Output Current

4

VOUT = 5V

3

2

RSENSE = 0.015Ω

1

RSENSE = 0.010Ω

0

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

OUTPUT CURRENT (A)

1708 G18

Load Step (Figure 13)

RUN/SS Current vs Temperature

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

–50 –25

0 25 50 75

TEMPERATURE (°C)

100 125

1708 G25

Load Step (Figure 13)

VOUT

100mV/DIV

IOUT

5A/DIV

VOUT

100mV/DIV

IOUT

5A/DIV

VOUT

100mV/DIV

IOUT

5A/DIV

VIN = 15V

10µs/DIV

VOUT2 = 1.6V

LOAD STEP = 100mA – 15A

1708 G22

CONSTANT FREQUENCY MODE: VFCB = VINTVCC

ACTIVE VOLTAGE POSITIONING CIRCUIT

VIN = 15V

10µs/DIV

VOUT2 = 1.6V

LOAD STEP = 100mA – 15A

Burst Mode OPERATION: VFCB = OPEN

ACTIVE VOLTAGE POSITIONING CIRCUIT

1708 G20

VIN = 15V

10µs/DIV

VOUT2 = 1.6V

LOAD STEP = 100mA – 15A

CONTINUOUS MODE: VFCB = 0V

ACTIVE VOLTAGE POSITIONING CIRCUIT

1708 G21

1708f

6

Share Link: