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參數(shù)資料
| 型號(hào)： | LDS9003-002-T2 |
| 廠商： | IXYS |
| 文件頁數(shù)： | 6/30頁 |
| 文件大?。?/td> | 425K |
| 描述： | IC TEMP/PWM CONTROLLER 16WQFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 外部 |
| 拓?fù)洌?/td> | ADC，振蕩器，寄存器庫 |
| 輸出類型： | I²C? |
| 輸出警報(bào)： | 無 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 2.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-TQFN |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | LDS9003-002-T2-6 |
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LDS9003 / 9001
?009 IXYS Corp.
6
Doc. No. 9003/9001_DS, Rev. N1.0
Characteristics subject to change without notice
Write Instruction Example - Setting 20mACurrent in LEDB1 and LEDB2
LDS9003 / 9001 REGISTERS DEFINITION AND PROGRAMMING
Note: Unlisted register addresses are for factory use only; For proper operation write only to registers fin .
ADDRESS DESCRIPTION
BITS NOTES
00h
IPWM1 Current setting
IPWM (9001)
8
01h
IPWM2 Current setting
(Not used for 9001)
8
02h
IPWM3 Current setting
(Not used for 9001)
8
User Loads code 08h ( 8 decimal) for 1 mA peak current
For PWM control current output.
This is only valid user code.
03h
IPWMx and TSENSEx
Channel Enable
6
User loads 2Ah for 9003.
User loads 02h for 9001.
04h
Global PWM Dimming
8
Log mode: (default)
Simultaneously decreases PWM duty cycle for IPWMx
Data Code 00h = 0 dB dimming, FEh = 72 dB FFh = OFF
Example: 50% brightness reduction ( 6dB) requires:
6dB / 0.17dB = 35 (decimal) = 23hsteps
Linear Mode:
Simultaneously decreases I
LED
in banks A C by subtracting
Global Dimming Code (Reg04h data) from PWM Duty Cycle
Code (Reg05h Reg07h data)
Data Code 00h = 0 dimming, If Global Dimming Code is
equal or exceeds PWM Duty Cycle Code, I
LED
= 0 mA.
05h
IPWM1 UserDuty Cycle
IPWM (9001)
8
Log Mode:
~ 0.17dB dimming per LSB for currents > 300 礎(chǔ); Refer to
8 to 12 bit conversion curve (Figure 3 and Table 10) for
resolution in range 0 300 礎(chǔ)
Data Code 00h = 0% Duty Cycle, FFh = 100% Duty Cycle
Example: 50% brightness reduction ( 6dB) requires: 255
( 6 dB / 0.17 dB) = 255 35 = 220 (decimal) = DCh steps
06h
IPWM2 UserDuty Cycle
IPWM (9001)
8
Same as above for reg 05h
07h
IPWM3 User Duty Cycle
IPWM (9001)
8
Same as above for reg 05h
19h
LED Diagnostics Test
8
See Table 2; Bit 5 = 1 sets user-initiated LED short/open
diagnostic
1Ch
LED Faults Status
( shorted to GND)
5
Bits from bit 5 to bit 0 represent LED status for sensed LEDs
Bit =1 LED short to GND
1Dh
LED Faults Status
(shorted to V
IN
/open)
5
Bits from bit 5 to bit 0 represent LED status for sensed LEDs
respectively. Bit = 1 represents LED shorted to V
IN
/open
1Eh
Configuration register
8
See Table 3
1Fh
Software reset, Standby
8
See Table 4
49h
Ta-Tj Temperature Offset
8
Since LED junction temperature is measured, the values
loaded here allow an offset to account for Tj Ta gradient.
This allows correction tables to be referenced to ~ Ta levels.
Two 4 bit offsets value for the LED and the Si Diode;
Bit [7:4] = Tj-Ta offset for the LEDs
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