AMC3202DMF datasheet(4/11 Pages) ADDTEK

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AMC3202

DD074_B -- AUGUST 2006

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min

Typ

Max

Unit

Supply Voltage

VIN

2.7

Average Supply Current

IIN

1.3

Output Voltage

VOUT

Operating Free-air Temperature Range

°C

DC ELECTRICAL CHARACTERISTICS

VCC = 3.3V, TA = 25°C, (Unless otherwise noted)

Parameter

Conditions

Min

Typ

Max

Unit

FB Reference Voltage

COMP tied to FB; Measure at FB;

2.7V≦VCC≦30V

1.246

1.276

1.300

FB Input Current

FB=VREF

-1.0

0.1

1.0

FB Reference Voltage Line

Regulation

COMP=FB, 2.7V≦VCC≦30V

0.01

0.03

%/V

Error Amp Transconductance

ICOMP=±25uA

(Note)

300

550

800

uMh

Error Amp Gain

(Note)

200

500

V/V

COMP Source Current

FB=1.0V, COMP=1.25V

COMP Sink Current

FB=1.5V, COMP=1.25V

200

625

1500

COMP High Clamp Voltage

FB=1.0V, COMP sources 25uA

1.5

1.7

1.9

COMP Low Clamp Voltage

FB=1.5V, COMP sinks 25uA

0.25

0.50

0.65

COMP Threshold

Reduce COMP from 1.5V until switching

stops

0.75

1.05

1.30

Base Operating Frequency

FB=1V

230

280

310

kHz

Reduced Operating Frequency

FB=0V

120

kHz

Maximum Duty Cycle

FB=1V

FB Frequency Shift Threshold

Frequency drops to reduced operating

frequency

0.36

0.40

0.44

Synchronization Range

320

500

kHz

Synchronization Pulse

Transition Threshold

Rise time=20ns

2.5

EN Bias Current

EN=0V

EN=3.0V

-15

-3.0

3.0

8.0

Shutdown Threshold

0.50

0.85

1.20

Shutdown Delay

2.7V≦VCC≦12V

12V≦VCC≦30V

350

200

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