參數(shù)資料
型號(hào)： LX1688
廠商： Microsemi Corporation
英文描述： MULTIPLE LAMP CCFL CONTROLLER
中文描述： 多燈CCFL控制器
文件頁(yè)數(shù)： 2/15頁(yè)
文件大小： 624K
代理商： LX1688
Microsemi
Integrated Products, Power Management
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
Copyright
2001
Rev. 1.1a, 2003-03-21
W
M
.
C
RangeMAX
LX1688
M
ULTIPLE
L
AMP
CCFL
C
ONTROLLER
I N T E G R A T E D P R O D U C T S
A B S O L U T E M A X I M U M R A T I N G S
Supply Voltage (VDD_P, VDD)....................................................................... 6.5V
Digital Inputs..............................................................................-0.3V to V
DD
+0.5V
Analog Inputs............................................................................–0.1V to V
DD
+0.5V
Digital Outputs ..........................................................................-0.3V to V
DD
+0.5V
Analog Outputs.........................................................................-0.1V to V
DD
+0.5V
Operating Junction Temperature ..................................................................125°C
Storage Temperature....................................................................................150°C
Lead Temperature (Soldering, 10 Seconds).................................................300°C
Note 1:
Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified terminal.
P A C K A G E P IN O U T
BEPOL
BRITE
CPOR
ENABLE
VDD
VDDSW
TRI_C
OLSNS
ISNS
ICOMP
VCOMP
VSNS
SLAVE
FAULT
A
OUT
PWP
ACKAGE
(Top View)
2
3
4
5
6
7
8
9
10
11
12
1
23
22
21
20
19
18
17
16
15
14
13
24
VSS_P
VSS
I_R
CPWM1
CPWM2
RMP_RST
PHA_SYNC
VDD_P
B
T H E R M A L D A T A
PW
Plastic TSSOP 24-Pin
THERMAL RESISTANCE
-
JUNCTION TO
A
MBIENT
,
θ
JA
100°C/W
Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JC
).
The
θ
JA
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
F U N C T I O N A L P I N D E S C R I P T I O N
Description
Output Driver A
Connects to dedicated GND for Aout and
Bout Drivers
Connects to analog GND
Tri-mode input pin to control the polarity of
the ENABLE and BRITE signal
Analog/PWM input for brightness control
Connects an external capacitor C
POR
to
VDD and is used for setting power-up reset
pulse width.
Pin Name
A
OUT
VSS_P
VSS
BEPOL
BRITE
Pin Name
B
OUT
VDD_P
VDD
VDDSW
TRI_C
Description
Output Driver B
Connects to dedicated VDD for Aout and
Bout Drivers
Connects to analog VDD
Switchable VDD output controlled by
ENABLE
Connects to external capacitor C
TRI
CPOR
OLSNS
Analog input to detect open-lamp condition
ENABLE
Used to enable or disable the chip
ISNS
Analog input from lamp current, has built-in
300mv offset
Current error Amp’s output; connects to
external capacitor C
ICOMP
Voltage error Amp’s output; connects to
external capacitor C
VCOMP
, can be used for
soft-start
I_R
Connects to external resistor R
I
; for bias
current setting for internal oscillator
Connects to external capacitor C
PWM
, used
for integrating an external digital PWM
signal for analog dimming
Connects to external capacitor C
PWM
, used
for integrating an external digital PWM
signal for analog dimming.
If SLAVE = “0”, RMP_RST is a CMOS
output; if SLAVE = “1”, it is a CMOS input
that locks the ramp oscillation frequency to
the master clock
If SLAVE= “0”, PHA_SYNC is a CMOS
output; if SLAVE = “1”, it is a CMOS input
that
make
the
synchronous with the master
ICOMP
CPWM1
VCOMP
CPWM2
VSNS
Analog input from transformer output
voltage
RMP_RST
SLAVE
Input control pin for setting the IC either in
Master or Slave mode; “1” for slave mode
and “0” for master mode.
PHA_SYNC
A
OUT
/B
OUT
phase
FAULT
Digital output to indicate maximum number
of lamp striking attempts has occurred
without lamp ignition.
P
A
C
K
A
G
E
D
A
T
A
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LX1688IPW-TR 制造商:Microsemi Corporation 功能描述:CCFL Controller 3.3V/5V 24-Pin TSSOP T/R 制造商:Microsemi Corporation 功能描述:CCFL DRVR 5.5V 24TSSOP - Tape and Reel
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