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34845 Datasheet(PDF) 15 Page - Freescale Semiconductor, Inc

Part # 34845
Description  Low Cost 6 Channel LED Backlight Driver with Integrated Power Supply
PDF  21 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34845 Datasheet(HTML) 15 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
15
34845
TYPICAL APPLICATIONS
INTRODUCTION
Figure 12. Typical Application Circuit for Single Wire Control, fS = 300 kHz
(VIN = 8.0 V, ILED = 20 mA/channel, 14 LEDs/channel, OVP = 49 V, VPWM = 3.3 V)
MC34845 B
CH5
CH1
CH2
CH3
33uH
CH4
20
23
18
11
10
9
8
7
3
4
80V, 1A
LED
LEG 2
VIN
LED
LEG 1
CH6
12
LED
LEG 3
SWA
SWB
LED
LEG 4
LED
LEG 5
LED
LEG 6
2.2uF
OVP
14
FAIL
22
1
VI N
2. 2uF
10V
VDC1
2.2uF
10V
VDC2
EN
6
24
VOUT
PGND
2
5
PGND
WAKE
EP
10uf
25V
15
7. 65 K O
0. 1%
21
13
GND
GND
PWM
16
1 MO
162 kO
2. 2uF
100 pF
100pF
100pF
100 pF
100pF
100 pF
Caps should be located
as cl oseas possi ble to
the MC 34845 device
0. 1uf
150pF
COMP
17
8.2nF
3.3 kO
Cont rol
Unit
2.2uF



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