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参数资料
| 型号： | LDS89001008-T2 |
| 厂商： | IXYS CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO8 |
| 封装： | 3 X 2 MM, ROHS COMPLIANT, MO-220, DFN-8 |
| 文件页数： | 3/30页 |
| 文件大小： | 622K |
| 代理商： | LDS89001008-T2 |
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LDS9003 / 9001
2009 IXYS Corp.
11
Doc. No. 9003/9001_DS, Rev. N1.0
Characteristics subject to change without notice
PIN DESCRIPTION
Pin #
Name
LDS9001
Name
LDS9003
Function
1
SCLK
I
2C Serial clock input
2
SDAT
I
2C Serial data input/output
3
SADD
I
2C Serial interface Address Programming
4
GND
Ground Reference
5
EN
NC
Not connect (no internal connect to the device)
6
TSENSE
EN
9001: LED Led-Sense for LED anaode
9003: Device enable (active high)
7
IPWM
NC
9001: PWM current source output 1mA
9003: NC
8
VIN
IPWM3
9001: Power Source Input; connect to 2.5V-5.5Vdc
9003: PWM3 current source output 1mA
9
TSENSE3 LED-Sense input for LED3 anode
10
IPWM2
PWM3 current source output 1mA
11
TSENSE2 LED-Sense input for LED2 anode
12
IPWM1
PWM1 current source output 1mA
13
TSENSE1 LED-Sense input for LED1 anode
14
VIN
Power Source Input; connect to 2.5-5.5Vdc
15
TST
Not connected by user; leave floating Factory Test pin
16
NC
Not connect (no internal connect to the device)
PAD
Connect to GND on the PCB
Top View :
DFN 8-Lead 3 x 2 mm
2
Top View :
TQFN 16 -Lead 3 x 3 mm
2
PIN FUNCTION
VIN is the supply pin. The operating input voltage
range is from 2.5 V to 5.5 V.
EN is the enable input for the entire device.
Guaranteed levels of logic high and logic low are set
at 1.3 V and 0.4V respectively. When EN is initially
taken high, the device becomes enabled and
may
communicate through I
2C interface
SDAT is the I
2C serial data line. This is a bidirectional
line allowing data to be written into and read from
internal registers.
SCLK is the I
2C serial clock input.
SADD is I
2C Serial interface Addresses tie to either
GND or VIN pin to allow choice of two slave
addresses. Allows two 9003 or 9001 on same control
bus for optional increased LED-SenseTM point
monitoring control
GND is the ground reference for internal circuitry.
The pin must be connected to the ground plane on
the PCB.
TSENSE1, TSENSE2, TSENSE3 (LDS9003) and
TSENSE
(LDS9001)
are
the
LED-Sense
TM
temperature sensing pins for the LEDs. These
connect to the LED anodes.
These pins force
currents of 1mA and 200ua and measure voltages for
calculation of LED junction temperature. These pins
enter high-impedance zero current state whenever
the device is in shutdown mode.
IPWM1, IPWM2, IMPWM3 (LDS9003) and IPWM
(LDS9001) are the PWM 1mA peak to GND current
sources outputs for controlling PWM of external HB
LED driver. User adds resistor to GND to generate
desired PWM voltage range levels. These pins enter
high-impedance zero current state whenever the
device is in shutdown mode.
TST is a test pin used by factory only. Leave it
floating (no external connection)
PAD is the exposed pad underneath the package.
For best thermal performance, the tab should be
soldered to the PCB and connected to the ground
plane
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