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參數(shù)資料
| 型號(hào)： | KDR720E |
| 廠商： | KEC Holdings |
| 英文描述： | White LED Step-Up Converter |
| 中文描述： | 白光LED升壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 421K |
| 代理商： | KDR720E |
2007. 2. 26
2/7
KAB3403T/DN
Revision No : 0
L1
4.7
μ
H ~ 22
μ
H
LOAD CURRENT (mA)
10
CONVERSION EFFICIENCY
E
75
70
65
60
80
85
90
0
5
30
15
35
20
25
3.6V
4.3V
5.0V
3.0V
SW
C1
1
μ
F
C2
1
μ
F
KAB3403T/DN
D1
CTL
FB
OVD
LED1
LED2
LED3
LED4
GND
V
CC
V
IN
V
OUT
VFB
ON
Shutdown and
Dimming control
OFF
R1
16
TYPICAL APPLICATION
OVD
SW
V
CC
CTL
FB
GND
Soft
Start
Error
Amp
Reference
Generator
Vref (320mV)
Shutdown
Dimming
Ramp
Generator
1.1MHz
Oscillator
OVER
VOLTAGE
DETECTION
I sens
Comparator
Q
R
S
Driver
BLOCK DIAGRAM
figure 2. KAB3403T/DN Block Diagram
NO.
SYMBOL
FUNCTION AND CONNECTION.
KAB3403T
KAB3403DN
6
1
V
CC
Input supply pin. Must be locally bypassed.
5
2
GND
Ground pin. Connect directly to local ground plane,
4
3
FB
Feedback pin. Reference voltage is 320mV. Connect cathode of lowest LED and resistor here.
3
4
SW
Switch pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
2
5
OVD
Over output voltage detect pin. Connect cathode of schottky diode and anode of highest LED.
1
6
CTL
Control pin : Shutdown or dimming control. Connect external enable or dimming circuits.
Shutdown mode (IF = 0) : V
CTL
<1.0V
Dimming control mode : (IF = 12% ~ 100%, depend on V
CTL
)
PIN FUNCTIONS
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| KDR720F | 制造商:KEC 制造商全稱:KEC(Korea Electronics) 功能描述:SCHOTTKY BARRIER TYPE DIODE |
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