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參數(shù)資料
| 型號： | LX1686ECPW-TR |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | FLUORESCENT LIGHT CONTROLLER, 256 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | ROHS COMPLIANT, PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 143K |
| 代理商： | LX1686ECPW-TR |
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2004
Rev. 1.1, 2006-02-27
WWW
.Microse
m
i
.CO
M
LX1686E
Digital Dimming CCFL Controller IC
PRODUCTION DATA SHEET
TM
FUNCTIONAL PIN DESCRIPTION
PIN NAME
DESCRIPTION
AOUT
Output driver A, typical 10K pull down resistor to VSS_P.
VSS_P
Power ground for output drivers only.
VSS
Signal ground.
AFD_C
Connects to an external capacitor, CAFD. Forcing to ground or VDD will make the VCO oscillate at approximately
50% of the maximum VCO frequency. Forcing to VDD/2 will make the VCO oscillate at 2x the FVERT frequency.
RAMP_C
Connects to external capacitor CRAMP for setting Direct Drive PWM operating frequency.
RAMP_R
Connects to external resistor RRAMP for setting Direct Drive PWM operating frequency.
FVERT
Vertical frequency reference digital input. Has internal pull down.
PD_CR
Phase Detector Filter. Part of phase lock loop. Connects to external capacitor and resistor network.
VCO_C
Connects to external capacitor CVCO
BRT_POS
Brightness control polarity. Has internal pull up. Leave open or pull up to VDD for dimming brightness
proportional to BRITE voltage, connect to ground for brightness inversely proportional to BRITE voltage.
BRITE
Analog voltage input for brightness control.
DIG_DIM
Digital Dimming Enable internal pull up. Leave open or pull up to VDD for operating in digital dimming mode.
Connect to ground for analog dimming mode.
ENABLE
Chip Enable internal pull up. High enables the chip. Low disables.
I_R
Current Reference Resistor. External resistor to ground (Ri) determines internal capacitor CICOMP.
BRT
Current Error Amplifier non-inverting input
VCOMP
Voltage Error Amplifier output. Connects to external frequency compensation capacitor CVCOMP. Controls soft-
start timing.
VSNS
Voltage Error Amplifier inverting input.
ICOMP
Current Error Amplifier output. Connects to external frequency compensation capacitor CICOMP.
ISNS
Current Error Amplifier inverting Input.
OLSNS
Open Lamp Sense Input.
TRI_C
Connects to external capacitor CTRI for setting strike Frequency ramp slope.
VDD
VDD_P
Dedicated VDD for output buffers only.
BOUT
Output Driver B typical 10K pull down resistor to VSS_P.
PP
AA
CC
KK
AA
GG
EE
DD
AA
TT
AA
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