UAC3092L-S20-R datasheet(6/9 Pages) UTC

6 / 9 page

UAC3092

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 9

www.unisonic.com.tw

QW-R101-017,B

ELECTRICAL CHARACTERISTICS(Cont.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SWITCHING CHARACTERISTICS

Fundamental Regulation Output

Frequency, [Pin 17 (21**)]

Clock oscillator frequency divided by

4096

Suggested Clock Oscillator

Frequency Range, (Pin 9)

fosc

Determined by external resistor, RT

205

280

350

kHz

Duty Cycle [Pin 17 (21**)]

At Start–up

During Overvoltage Condition

StartDC

OVDC

3.5

4.7

5.5

Low/High RPM Transition

Frequency (Pin 10)

LRCFreq

247

273

309

LRCS

Low RPM Mode (LRCFreq < 247 Hz),

Pin 11 = Open (Slow Rat)

8.5

9.5

10.5

LRCF

Low RPM Mode (LRCFreq < 247 Hz),

Pin 11 = Grounded (Fast Rate)

LRC Duty Cycle Increase Rate

LRCH

High RPM Mode (LRCFreq > 309 Hz),

Pin 11 = Don’t Care (LRC Mode is

disabled)

409

455

501

%/sec

Note:

** For 24-pin package.

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