KIB3401F Datasheet, PDF (1/6 Pages) KEC(Korea Electronics) – BICD LINEAR INTEGRATED CIRCUIT

SEMICONDUCTOR
TECHNICAL DATA
KIB3401F
BICD LINEAR INTEGRATED CIRCUIT
White LED Step-Up Converter
The KIB3401F is a monolithic step-up DC/DC converter specifically
designed to drive white LEDs with a constant current from Li-ion cell.
Relative large 320mV feedback voltage & it’s high accuracy help you
setting LED current with a external resistor.
KIB3401F is available in a extremely low profile & small TS-6 package.
A 10 H inductor is sufficient for most application.
FEATURES
Inherently Matched LED Current.
High Efficiency : 85% (max.)
Built in a open circuits protection for the LEDs fail.
Drives Up to four LEDs without external zener diode.
Drives Up to six LEDs with external zener diode.
Built in a N-channel MOSFET Switch.
Fast 1.1MHz(typ.) Switching Frequency.
Uses Tiny 1mm Tall Inductors.
Bulit in Thermal protection.
Wide Dimming control range : 25%~100%.
Extremely low height & small Packaging.
APPLICATIONS
Celluars Phones
PDAs
Digital Cameras
MP3 Players, Color Displays
E
K
B
K
1
6
2
5
3
4
DIM
A
B
C
D
E
F
G
H
I
J
K
L
MILLIMETERS
2.9+_ 0.2
1.6+0.2/-0.1
0.70+_ 0.05
0.4+_ 0.1
2.8+0.2/-0.3
1.9+_ 0.2
0.95
0.16+_ 0.05
0.00-0.10
0.25+0.25/-0.15
0.60
0.55
H
J
J
TS6
Marking
654
401 ^{Type Name}
Lot No.
TYPICAL APPLICATION
L1
4.7 µH~10 µH
D1
V_IN
6
3
LED1
C1
1µF
V_CC
SW
LED2
OVD 2
ON
OFF
LED3
C2
KIB3401F
1µF
LED4
1 ^CTL
Shutdown and
Dimming control
GND
5
FB 4
R1
21.5Ω
0
C1, C2 : X5R OR X7R DIELECTRIC
D1 : KEC KDR730E/KDR720E (Low V_F )
L1 : MURATA LQH32CN100K53L OR EQUIVALENT
Figure1. 4Series White LED Driver in Thin TS6
123
CONVERSION EFFICIENCY
87.00
85.00
83.00
81.00
79.00
77.00
75.00
0
Vin
3.0V
3.6V
4.3V
5
10
15
20
25
LOAD CURRENT (mA)
2006. 4. 13
Revision No : 3
1/6