UC3846L-S16-R datasheet(4/9 Pages) UTC

4 / 9 page

UC3846

LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

4 of 9

www.unisonic.com.tw

QW-R103-061.D



ABSOLU T E M AX I M U M RAT I N G (Note)

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage (Pin 15)

VIN

+40

Collector Supply Voltage (Pin 13)

+40

Output Current, Source or Sink (Pins 11, 14)

500

Analog Inputs (Pins 3, 4, 5, 6, 16)

-0.3 ~ +VIN

Reference Output Current (Pin 2)

IREF

-30

Sync Output Current (Pin 10)

ISYNC-OUT

-5

Error Amplifier Output Current (Pin 7)

IO-EA

-5

Soft Start Sink Current (Pin 1)

ISINK

Oscillator Charging Current (Pin 9)

IOSC

TA=25°C

1000

Power Dissipation

TC=25°C

2000

Storage Temperature

TSTG

-65 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



ELECT RI CAL CH ARACT ERI ST I CS

(TJ=TA=0°C~+70°C, VIN=15V, RT=10k, CT=4.7nF, Unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

REFERENCE SECTION

Output Voltage

VREF

TJ=25°C, IO=1mA

5.0

5.1

5.2

Line Regulation

∆V1

VIN=8V~40V

Load Regulation

∆V2

IL=1mA~10mA

Temperature Stability

Over Operating Range, (Note 2)

0.4

mV/°C

Total Output Variation

VREF-O

Line, Load, and Temperature (Note 2)

4.95

5.25

Output Noise Voltage

10Hz

≤f≤10kHz, TJ=25°C (Note 2)

100

µV

Long Term Stability

∆V3

TJ=125°C, 1000 Hrs. (Note 2)

Short Circuit Output Current

VREF=0V

-10

-45

OSCILLATOR SECTION

Initial Accuracy

FOSC

TJ=25°C

kHz

Voltage Stability

∆V

VIN=8V~40V

-1

Temperature Stability

∆TS

Over Operating Range (Note 2)

-1

Sync Output High Level

VOH(SYNC)

3.9

4.35

Sync Output Low Level

VOL(SYNC)

2.3

2.5

Sync Input High Level

VIH(SYNC)

Pin 8=0V

3.9

Sync Input Low Level

VIL(SYNC)

Pin 8=0V

2.5

Sync Input Current

ISYNC

Sync Voltage=3.9V, Pin 8=0V

1.3

1.5

ERROR AMP SECTION

Input Offset Voltage

VIO

0.5

Input Bias Current

IBIAS

-0.6

-2

µA

Input Offset Current

IIO

250

Common Mode Range

VCM

VIN=8V~40V

VIN-2V

Open Loop Voltage Gain

GVO

∆VO=1.2~3V, VCM=2V

105

Unity Gain Bandwidth

TJ=25°C (Note 2)

0.7

1.0

MHz

CMRR

CMRRA

VCM=0V~38V, VIN=40V

100

PSRR

PSRRA

VIN=8V~40V

105

Output Sink Current

ISINK

VID=-15mV~-5V, VPIN 7=1.2V

Output Source Current

ISOURCE

VID=15mV~5V, VPIN 7=2.5V

-0.2

-0.5

High Level Output Voltage

VOH

4.3

4.6

Low Level Output Voltage

VOL

RL=(Pin 7) 15k

Ω

0.7

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