參數(shù)資料
型號(hào): MAX1610
廠(chǎng)商: Maxim Integrated Products, Inc.
英文描述: Digitally Controlled CCFL Backlight Power Supplies
中文描述: 數(shù)控CCFL背光燈電源
文件頁(yè)數(shù): 1/20頁(yè)
文件大?。?/td> 137K
代理商: MAX1610
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
BATT
LX
BST
GND
VL
CS
OTP
REF
UP
DN
SHDN
SYNC
SS
CC
CSAV
MINDAC
TOP VIEW
MAX1610
SO
M
Digitally Controlled CCFL Bac klight
Power S upplies
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
1
19-1128; Rev 0; 9/96
EVALUATION KIT
AVAILABLE
_______________General Desc ription
The MAX1610/MAX1611 are fully integrated, high-
efficiency drivers for cold-cathode fluorescent lamps
(CCFLs). They operate from a 4.5V to 26V power
source. An on-board, high-switching-frequency power
MOSFET reduces external component count and mag-
netics size. The MAX1610/MAX1611 protect against
open or shorted lamps. The CCFL can be driven from
an isolated transformer secondary winding to improve
efficiency and avoid flicker at dim tube settings.
Brightness is adjusted by scaling the lamp current, or
by operating with a fixed lamp current and chopping
the CCFL on and off at a rate faster than the eye can
detect.
The MAX1610’s digital inputs increment, decrement, or
clear an internal, 5-bit up/down counter, which sets
C C FL brightness. The MAX1611 uses a System
Management Bus (SMBus) 2-wire serial interface to
directly set CCFL brightness. Both devices include
micropower shutdown and a linear regulator that elimi-
nates the need for a separate logic supply. The digital
interface remains active in shutdown, preserving the
brightness setting.
________________________Applic ations
Notebook/Laptop Computers
Point-of-Sale Terminals
Portable Medical Equipment
Instrument Displays
____________________________Features
Direct Digital Control of CCFL Brightness
Low Supply Current: 3mA Max Operating
20μA Max Shutdown
Low-Voltage Operation, Down to 4.5V
Internal 26V, 0.7
W
Power Switch
Protection Against Open or Shorted Lamps
Supports Isolated Transformer Secondary
Winding
SMBus Serial Interface (MAX1611)
No Flicker at Low Brightness (internal 280Hz
current chopping)
High Power-to-Light Efficiency
Selectable 290kHz/145kHz Switching Frequency
Oscillator SYNC Input
16-Pin Narrow SO Package
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
BATT
LX
BST
GND
VL
CS
OTP
REF
SDA
SCL
SMBSUS
SYNC
SS
CC
CSAV
MINDAC
MAX1611
SO
__________________________________________________________Pin Configurations
PART
MAX1610
CSE
MAX1611
CSE
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
16 Narrow SO
16 Narrow SO
______________Ordering Information
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