LTC3803-3 datasheet(4/16 Pages) LINER

Part #	LTC3803-3

Description	Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC3803-3

4

38033fd

TYPICAL PERFORMANCE CHARACTERISTICS

Reference Voltage vs Temperature

Reference Voltage

vs Supply Voltage

Reference Voltage

vs VCC Shunt Regulator Current

Oscillator Frequency

vs Temperature

Oscillator Frequency

vs Supply Voltage

Oscillator Frequency

vs VCC Shunt Regulator Current

VCC Undervoltage Lockout

Thresholds vs Temperature

VCC Shunt Regulator Voltage

vs Temperature

ICC Supply Current

vs Temperature

TA = 25°C unless otherwise noted.

TEMPERATURE (°C)

–60

90

38033 G01

0

–30

30

60

150

120

VCC = 8V

780

785

790

795

800

805

810

815

820

VCC SUPPLY VOLTAGE (V)

6

799.0

799.2

799.6

799.8

800.0

801.0

800.4

7

8

8.5

38033 F02

799.4

800.6

800.8

800.2

6.5

7.5

9

9.5

VCC VCLAMP1mA

ICC (mA)

0

799

800

801

15

25

38033 G03

798

797

796

510

20

802

803

804

–60

90

0

–30

30

60

150

120

TEMPERATURE (°C)

38033 G04

VCC = 8V

330

320

310

300

290

280

270

VCC SUPPLY VOLTAGE (V)

6

270

280

290

300

310

330

6.5

7

7.5

8

38033 G05

8.5

9

320

ICC (mA)

0

270

280

290

300

310

330

5

10

15

20

38033 G06

25

30

35

320

–60

90

0

–30

30

60

150

120

TEMPERATURE (°C)

4.0

4.5

5.0

5.5

6.5

7.0

7.5

9.0

8.5

38033 G07

6.0

8.0

VTURNOFF

VTURNON

–60

90

0

–30

30

60

150

120

TEMPERATURE (°C)

9.0

9.1

9.3

9.4

9.5

10.0

9.7

38033 G08

9.2

9.8

9.9

9.6

ICC = 25mA

ICC = 1mA

–60

90

0

–30

30

60

150

120

TEMPERATURE (°C)

200

225

350

250

38033 G09

300

325

275

VCC = 8V

VITH/RUN = 1.3V

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