KA3843AC

3

°C to +70°C, Unless otherwise specified)

Notes :

1. These parameters, although guaranteed, are not 100% tested in production.

3. Gain defined as:

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

ERROR AMPLIFIER SECTION

Input voltage

2.42

2.50

2.58

V

Input bias current

-

-0.3

- 2

uA

Open loop gain

65

90

-

dB

Unity gain bandwidth

GBW

°C (Note1)

0.7

1

-

MHz

PSRR

PSRR

60

70

-

dB

Output sink current

2

6

-

mA

Output source current

-0.5

-0.8

-

mA

Output high voltage

R1 = 15K

Ω to GND

56

-

V

Output low voltage

R1 = 15k

Ω to Vref

-0.7

1.1

V

OUTPUT SECTION

Output Low Level

-

0.1

0.4

V

-

1.5

2.2

V

Output high level

13

13.5

-

V

12

13.5

-

V

Rise time

°C, C1 = 1nF (Note1)

-

40

100

ns

Fall time

°C, C1 = 1nF (Note1)

-

40

100

ns

Output voltage swing limit

-

22

-

V

UNDER VOLTAGE LOCKOUT SECTION

Start threshold

KA3882E

15

16

17

V

KA3883E

7.8

8.4

9.0

V

Min. operating voltage

( after turn on )

KA3882E

9

10

11

V

KA3883E

7.0

7.6

8.2

V

PWM SECTION

Maximum duty cycle

KA3882E/KA3883E

94

96

100

%

Minimum duty cycle

--

-

0

%

TOTAL STANDBY CURRENT

Start-up current

--

0.2

0.4

mA

Operating supply current

-

11

17

mA

-

29

-

V

G

V

∆V

CO MP

∆V

SE NSE

------------------------- OV

SENSE

0.8V

≤≤

;

=