MAX1579 Maxim Integrated Products, MAX1579 Datasheet - Page 12

• Manufacturer Part Number: MAX1579
• Description: Complete Bias and White LED Power Supplies for Small TFT Displays
• Manufacturer: Maxim Integrated Products

Complete Bias and White LED Power Supplies
for Small TFT Displays
Table 1. Recommended Components for
the Typical Application Circuit
12
DESIGNATION
C9, C10, C11,
C4, C5, C12
C13, C14
______________________________________________________________________________________
C1, C8
C6, C7
D2–D7
R2, R3
C2
C3
D1
L1
R1
4.7µF, 6.3V X5R ceramic capacitors (0603)
Murata GRM188R60J475KE19
0.1µF, 6.3V X5R ceramic capacitor (0402)
TDK C1005X5R1A104K
0.1µF, 50V X7R ceramic capacitor (0603)
TDK C1608X7R1H104K
1µF, 16V X7R ceramic capacitors (0805)
TDK C2012X7R1C105K
2.2µF, 6.3V X5R ceramic capacitors (0603)
Taiyo Yuden JMK107BJ225KA
1µF, 6.3V X5R ceramic capacitors (0402)
Murata GRM155R60J105KE19
40V, 0.5A Schottky diode
International Rectifier MBRX0540
White LEDs
Nichia NSCW215T
22µH, 250mA inductor (1210)
Murata LQH32CN220K53
22.1Ω ±1% resistor (0402)
200Ω ±5% resistors (0402)
DESCRIPTION
Figure 3. Typical Application Circuit
MAIN OUTPUT
2.7V TO 5.5V
PWM OR
ANALOG
DIMMING
+5V, 25mA
OFF
4.7µF
INPUT
C1
ON
0.1µF
2.2µF
2.2µF
4.7µF
1µF
C9
C2
C6
C7
C8
IN
CTRL
COMP
ONBIAS
C1P
C1N
C2P
C2N
V
MAIN
GND
DD
MAX1578
MAX1579
22µH
L1
PGND
PMPB
PMP
OUT
CU1
CD1
CU2
CD2
POS
CU3
NEG
CS
LX
C14
1µF
C13
1µF
D1
C12
1µF
C11
1µF
C5
1µF
C10
1µF
www.DataSheet4U.com
200Ω
200Ω
R2
R3
C3
0.1µF
OUTPUT UP TO
8 LEDS IN SERIES
C4
1µF
POSITIVE OUTPUT
+15V, 100µA
NEGATIVE OUTPUT
-10V, 100µA
R1
22.1Ω
D2–D7