參數(shù)資料
型號(hào): MAX1579
廠商: Maxim Integrated Products, Inc.
英文描述: Complete Bias and White LED Power Supplies for Small TFT Displays
中文描述: 可提供完備偏置的白光LED電源,用于TFT顯示器
文件頁(yè)數(shù): 12/13頁(yè)
文件大?。?/td> 221K
代理商: MAX1579
M
Complete Bias and White LED Power S upplies
for S mall T FT Displays
12
______________________________________________________________________________________
DESIGNATION
DESCRIPTION
C1, C8
4.7μF, 6.3V X5R ceramic capacitors (0603)
Murata GRM188R60J 475KE19
C2
0.1μF, 6.3V X5R ceramic capacitor (0402)
TDK C1005X5R1A104K
C3
0.1μF, 50V X7R ceramic capacitor (0603)
TDK C1608X7R1H104K
C4, C5, C12
1μF, 16V X7R ceramic capacitors (0805)
TDK C2012X7R1C105K
C6, C7
2.2μF, 6.3V X5R ceramic capacitors (0603)
Taiyo Yuden J MK107BJ 225KA
C9, C10, C11,
C13, C14
1μF, 6.3V X5R ceramic capacitors (0402)
Murata GRM155R60J 105KE19
D1
40V, 0.5A Schottky diode
International Rectifier MBRX0540
D2–D7
White LEDs
Nichia NSCW215T
L1
22μH, 250mA inductor (1210)
Murata LQH32CN220K53
R1
22.1
±1% resistor (0402)
200
±5% resistors (0402)
R2, R3
Table 1. Recommended Components for
the Typical Application Circuit
MAX1578
MAX1579
IN
MAIN
ONBIAS
C1P
C1N
C2P
C2N
V
DD
GND
CTRL
COMP
OUT
PGND
LX
INPUT
2.7V TO5.5V
L1
22
μ
H
MAIN OUTPUT
+5V, 25mA
PWM OR
ANALOG
DIMMING
OUTPUT UP TO
8 LEDS IN SERIES
CS
ON
OFF
D2–D7
D1
C2
0.1
μ
F
C9
1
μ
F
C6
2.2
μ
F
C7
2.2
μ
F
C8
4.7
μ
F
C1
4.7
μ
F
C3
0.1
μ
F
POSITIVE OUTPUT
+15V, 100
μ
A
POS
CU3
NEG
NEGATIVE OUTPUT
-10V, 100
μ
A
C4
1
μ
F
C5
1
μ
F
C12
1
μ
F
R1
22.1
CU1
PMP
CD1
C10
1
μ
F
C13
1
μ
F
R2
200
CU2
PMPB
CD2
C11
1
μ
F
C14
1
μ
F
R3
200
Figure 3. Typical Application Circuit
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