LT1683 データシートの表示（PDF） - Linear Technology

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LT1683

Slew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller

Linear Technology 

LT1683

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: Supply current specification includes loads on each gate as in

Figure 1a. Actual supply currents vary with operating frequency, operating

voltages, V5 load, slew rates and type of external FET.

Note 3: The LT1683E is guaranteed to meet performance specifications

from 0°C to 70°C. Specifications over the –40°C to 125°C operating range

are assured by design, characterization and correlation with statistical

process controls. The LT1683I is guaranteed and tested over the – 40° to

125° operating temperature range.

Note 4: Output gate drivers will be enabled at this voltage. The GCL voltage

will also determine drivers’ activity.

Note 5: Gate drivers are ensured to be on when VIN is greater than the

maximum value.

TYPICAL PERFORMANCE CHARACTERISTICS

Feedback Voltage and Input

Current vs Temperature

1.260

750

1.258

700

1.256

650

1.254

600

1.252

550

1.250

500

1.248

450

1.246

400

1.244

350

1.242

300

1.240

250

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

1683 G01

Negative Feedback Voltage and

Input Current vs Temperature

2.480

3.2

2.485

3.0

2.490

2.8

2.495

2.6

2.500

2.4

2.505

2.2

2.510

2.0

2.515

1.8

2.520

–50 –25

1.6

0 25 50 75 100 125 150

TEMPERATURE (°C)

1683 G02

Feedback Overvoltage Shutdown

vs Temperature

1.70

1.65

1.60

1.55

1.50

1.45

1.40

1.35

1.30

1.25

1.20

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

1683 G03

Error Amp Transconductance

vs Temperature

2000

1900

1800

1700

1600

1500

1400

1300

1200

1100

1000

–50 –25 0 25 50 75 100 125 150

TEMPERATURE (°C)

1683 G04

Error Amp Output Current vs

Feedback Pin Voltage from Nominal

500

400

– 40°C

300

200

25°C

100

125°C

0

–100

–200

–300

– 400

– 500

–400 –300 –200 –100 0 100 200 300 400

FEEDBACK PIN VOLTAGE FROM NOMINAL (mV)

1683 G05

1683fd

4

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