KB3301
ABSOLUTE MAXIMUM RATINGS
Paramenter
Supply Voltage
LX Pin Switch Voltage
Other I/O Pin Voltages
Lx Pin Switch Current
EXT Pin Driver Current
Package Thermal Resistance
Operating Junction Temperature
Storage Temperature Range
(Ta=25
Unit
V
V
V
A
mA
/W
/W
SOT-26
SOT-89-5
Symbol Ratings
Vin
- 0.3V
7V
- 0.3
(VDD + 0.8V)
- 0.3V
(VDD + 0.3V)
2.5
200
Pd
145
45
Tj
125
- 65 ~ +150
ELECTRICAL CHARACTERISTICS
(Vin =1.5V, VDD=3.3V, I=0, Ta = 25
Parameter
Start-UP Voltage
Operating VDD Range
No Load Current I (V
IN
)
Switch-off Current I (VDD)
Shutdown Current I (V
IN
)
Feedback Reference Voltage
Switching Frequency
Maximum Duty
LX ON Resistance
Current Limit Setting
EXT ON Resistance to VDD
EXT ON Resistance to GND
Line Regulation
Load Regulation
CE Pin Trip Level
Temperature Stability for Vout
Thermal Shutdown
Thermal Shutdown Hysterises
Symbol
V
ST
V
DD
I
NO LOAD
I
SWITCH OFF
I
OFF
V
REF
F
S
D
MAX
I
LIMIT
, unless otherwise spec
Test Conditions
I
L
= 1mA
VDD pin voltage
V
IN
= 1.5V, V
OUT
= 3.3V
V
IN
= 6V
CE Pin = 0V, V
IN
= 4.5V
Close Loop, VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
V
IN
= 1.5 ~ 2.5V, I
L
= 1mA
V
IN
= 2.5V, I
L
= 1 ~ 100mA
VDD = 3.3V
Min
--
2
--
--
--
1.225
--
--
--
--
--
--
--
--
0.4
--
--
--
Typ
0.80
--
75
14
0.01
1.25
500
95
0.3
2
5
5
10
0.25
0.8
50
165
10
Max
0.85
6.5
--
--
1
1.275
--
--
--
--
--
--
--
--
1.2
--
--
--
Units
V
V
µA
µA
µA
V
KHz
%
Ω
A
Ω
Ω
mV/V
mV/mA
V
ppm/
V
LINE
V
LOAD
T
S
T
SD
T
SD
* Note: The CE pin shall be tied to VDD pin and inhibit to act the ON/OFF state whenever the VDD pin voltage
may reach to 5.5V or above.
P3 / 5
KINGBOR [ KINGBOR TECHNOLOGY CO ]
