KA3882E/KA3883E
3
Electrical Characteristics
(Continued)
(V
CC
= 15V, R
T
= 10kΩ, C
T
= 3.3nF, T
A
= 0°C to +70°C, Unless otherwise specified)
* Adjust VCC above the start threshold before setting at 15V
Notes :
1. These parameters, although guaranteed, are not 100% tested in production.
2. Parame ter me as ured at trip point of latch with VFB = 0V.
3. Gain def ine d as:
4. Junction-to-air thermal resistance test enviroments.
-. PCB info rm at i on ;
Board thicknes s : 1.6mm , Board dime nsion : 76.2 X 114.3 mm2 , Ref. : EIA / JSED51-3 and EIA / JSED51-7
-. Board structure; Using the single layer PCB.
Parameter Symbol Conditions Min. Typ. Max. Unit
ERROR AMPLIFIER SECTION
Input voltage V
I
V
PIN1
= 2.5V 2.42 2.50 2.58 V
Input bias current I
BIAS
V
FB
=0V - -0.3 - 2 uA
Open loop gain G
VO
V
O
= 2V to 4V (Note1) 65 90 - dB
Unity gain bandwidth GBW T
J
= 25°C (Note1) 0.7 1 - MHz
PSRR PSRR V
CC
= 12V to 25V (Note1) 60 70 - dB
Output sink current I
SINK
V
PIN2
= 2.7V, V
PIN1
= 1.1V 2 6 - mA
Output source current I
SOURCE
V
PIN2
= 2.3V, V
PIN1
= 5.0V -0.5 -0.8 - mA
Output high voltage V
OH
V
PIN2
= 2.3V, R1 = 15kΩ to GND 5 6 - V
Output low voltage V
OL
V
PIN2
= 2.7V, R1 = 15kΩ to Vref - 0.8 1.1 V
OUTPUT SECTION
Output low level V
OL
I
SINK
= 20mA - 0.1 0.4 V
I
SINK
= 200mA - 1.5 2.2 V
Output high level V
OH
I
SOURCE
= 20mA 13 13.5 - V
I
SOURCE
= 200mA 12 13.5 - V
Rise time t
R
T
J
= 25°C, C1 = 1nF (Note1) - 40 100 ns
Fall time t
F
T
J
= 25°C, C1 = 1nF (Note1) - 40 100 ns
Output voltage swing limit V
OLIM
V
CC
= 27V, C1 = 1nF - 22 - V
UNDER VOLTAGE LOCKOUT SECTION
Start threshold V
TH
KA3882E 15 16 17 V
KA3883E 7.8 8.4 9.0 V
Min. operating voltage
( after turn on ) V
TL
KA3882E 9 10 11 V
KA3883E 7.0 7.6 8.2 V
PWM SECTION
Maximum duty cycle D
MAX
KA3882E/KA3883E 94 96 100 %
Minimum duty cycle D
MIN
---0%
TOTAL STANDBY CURRENT
Start-up current I
ST
--0.20.4mA
Operating supply current I
CC
V
PIN2
= V
PIN3
= 0V - 11 17 mA
V
CC
zener voltage V
Z
I
CC
= 25mA - 29 - V
G
V
∆V
COMP
∆V
SENSE
------------------------- 0V
SENSE
0.8V≤≤;=