파트넘버.co.kr LX1689IPW 데이터시트 PDF


LX1689IPW 반도체 회로 부품 판매점

Third Generation CCFL Controller



Microsemi Corporation 로고
Microsemi Corporation
LX1689IPW 데이터시트, 핀배열, 회로
INTEGRATED PRODUCTS
LX1689
Third Generation CCFL Controller
PRODUCTION DATA SHEET
DESCRIPTION
The LX1689 is the latest generation
The brightness control input allows the
Direct Drive CCFL (Cold Cathode use of either a DC voltage or a PWM
Fluorescent Lamp) Controller. It uses input to simplify design. Programmable
new circuit design techniques (patents polarity brightness control is retained,
pending) and combines digital and linear except in the case of externally clocked
circuits with an advanced BiCMOS digital dimming. Two onboard LDO
process to create a more complete regulators extend the input voltage range
controller in a small package.
of the IC up to 28 Volts without using
When compared to the original external circuitry as was required with our
LX1686 design, identical module previous controllers. The LX1689
applications use from 12 to 30 less includes a new lamp strike detection
components. New functions and scheme that saves a package pin and three
enhancements have been added to make external components. Internal circuits
the LX1689 even easier to use.
monitor lamp current pulses at the I_SNS
The on-chip PLL circuit used to input to determine if the lamp strikes and
synchronize the digital dimming burst if it stays ignited once operational.
frequency to the video frame rate, as
Integrating full wave rectifiers for
used in the LX1686, is replaced with a each of three lamp inputs has significantly
programmable counter. This counter can reduced the lamp feedback component
divide the video controller horizontal count. In addition the controller features
sync pulse, other external clock source include auto shutdown for open or broken
or the internal chip clock source to lamps, and a lamp fault detection with a
generate the burst frequency.
status reporting output.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ 3 to 28 Volt Single Fixed (±20%)
Supply Operating Range
ƒ Selectable Analog/Digital
Dimming Modes
ƒ Digital Dimming Can Synch to
External Or Internal Clocks
ƒ User Programmable Digital
Dimming Burst Frequency
ƒ 252 mS Power On Delay
ƒ Flexible Lamp Current
Compensation Input
ƒ Open Lamp Shutdown and Fault
Output Indicator
ƒ “On Chip” Full Wave Lamp
Current & Voltage Rectifiers
ƒ 20 Pin TSSOP Package
BENEFITS
ƒ Low Component Count /
Module Cost / Size
ƒ High “Nits/Watt” Efficiency
ƒ Operates Directly From 1 to 6
Li_Ion Cells
ƒ Lamp Current Compensation
Input Makes Indoor/Outdoor
And Wide Temperature Range
Applications Easy to Design
PRODUCT HIGHLIGHT
LX1689 CCFL Inverter Layouts Examples*
2.64in. (67mm)
Actual Inverter Size
OR
1.38in. (35mm)
.397 in.
(10mm)
.870 in.
(22mm)
Actual Inverter Size
*As Shown in Figure 1 (Typical Application)
Bill of Materials
1 LX1689CPW
1 Transformer
1 Dual FET
2 Connectors
7 Resistors
9 Capacitors
21 Total Count
Copyright 2000
Rev. 1.0b, 2003-03-31
TJ (°C)
0 to 70
-40 to 85
PACKAGE ORDER INFO
MIN VDD
3V
3V
MAX VDD
28V
28V
Plastic TSSOP
PW 20-PIN
LX1689CPW
LX1689IPW
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX1689CPWT)
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1


LX1689IPW 데이터시트, 핀배열, 회로
INTEGRATED PRODUCTS
LX1689
Third Generation CCFL Controller
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V_BATT)................................................................................................. 30V
Digital Input (ENABLE).....................................................................................-0.3V to 7V
Analog Inputs Transient Peak (I_SNS, OC_SNS, OV_SNS)..............................-25V to +25V
Analog Inputs (BRITE_IN, EA_IN).................................................................. -0.3V to 5.5V
Digital Inputs (DIM_CLK,DIM_MODE, DIV_248) ......................................... -0.3V to 5.5V
Digital Output (AOUT, BOUT) .................................................................-0.3V to VDD_P +0.5V
Analog Outputs (BRITE_C, I_R, BRITE_OUT, BRITE_R, EA_OUT) ...-0.3V to VDD_A_ +0.5V
Operating Temperature Range ..................................................................... -45°C – 100°C
Maximum Junction Temperature ...............................................................................125°C
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
PACKAGE PIN OUT
GND
AOUT
BOUT
DIM_CLK
DIM_MODE
DIV_248
BRITE_C
BRITE_R
BRITE_IN
ENABLE
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
PW PACKAGE
(Top View)
VDD_P
VDD_A
V_BATT
OC_SNS
OV_SNS
I_SNS
BRITE_OUT
EA_OUT
EA_IN
I_R
THERMAL DATA
PW Plastic TSSOP 20-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
144°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
PIN NAME
GND
VDD_P
AOUT
VDD_A
BOUT
V_BATT
FUNCTIONAL PIN DESCRIPTION
DESCRIPTION
Ground
Power VDD_P Supply Output. This output pin is used to connect an external capacitor to stabilize and filter the
on chip VDD_P LDO regulator. The input of the LDO is the switched V_BATT supply. LDO output is normally 5.3V
and is used only to drive the output buffers at AOUT and BOUT. The external capacitor will be a 100 to 1000nF
ceramic dielectric. Up to 5mA DC additional load may be imposed by external circuitry. External load must be
reduced if the combination of output current and input voltage exceeds power dissipation capability of the die.
A buffer N-FET driver output. The pin includes a internal 10K pull down resistor.
Analog VDD_A Supply Output. This output pin is used to connect an external capacitor to stabilize and filter the
on chip VDD_A LDO regulator. The input of the LDO is the switched V_BATT supply. LDO output is normally
2.95V and is used to drive all circuitry except the output buffers at AOUT and BOUT. Average internal load is
6mA. Up to 5mA DC additional load may be imposed by external circuitry. External load must be reduced if the
combination of output current and input voltage exceeds power dissipation capability of the die. The external
capacitor will be a 100 to 1000nF ceramic dielectric type.
B buffer N-FET driver output. The pin includes a internal 10K pull down resistor.
Voltage Input, 3 to 28V input range. V_BATT is switched (see ENABLE) to remove power from chip. Two LDO
regulators follow the switch, one generates VDD_P (see VDD_P) and the other VDD_A (see VDD_A). Care
must be taken in power distribution design to minimize transients and noise coupling from the VDD_P output to
the VDD_A output. The external capacitor will be a 100 to 1000nF ceramic dielectric type.
Copyright 2000
Rev. 1.0b, 2003-03-31
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2




PDF 파일 내의 페이지 : 총 15 페이지

제조업체: Microsemi Corporation

( microsemi )

LX1689IPW controller

데이터시트 다운로드
:

[ LX1689IPW.PDF ]

[ LX1689IPW 다른 제조사 검색 ]




국내 전력반도체 판매점


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877

[ 홈페이지 ]

IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈

( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )

전력반도체 문의 : 010-3582-2743



일반적인 전자부품 판매점


디바이스마트

IC114

엘레파츠

ICbanQ

Mouser Electronics

DigiKey Electronics

Element14


관련 데이터시트


LX1689IPW

Third Generation CCFL Controller - Microsemi Corporation