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參數(shù)資料
| 型號(hào)： | L9823 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Octal Low-Side Driver for bulb, resistive and inductive loads with serial input control, output protection and diagnostic |
| 中文描述： | 八路低端的燈泡，電阻和串行輸入控制，輸出保護(hù)和診斷感性負(fù)載驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 168K |
| 代理商： | L9823 |
L9823
8/12
Output Stages Control
Each output is controlled with its latch and with a common Reset line, which enables all outputs.
The control data are transmitted via the SI input, the timing of the serial interface is shown in Fig. 1.
The device is selected with low CSB signal and the input data are transferred into the 8 bit shift register at every
falling SCLK edge. The rising edge of the CSB latches the new data from the shift register to the drivers.
Figure 1. Timing of the Serial Interface
The SPI register data are transferred to the output latch at rising CSB edge. The digital filter between CSB and
the output latch ensures that the data are transferred only after 8 SCLK cycles or multiple of 8 SCLK cycles
since the last CSB falling edge. The CSB changes only at low SCLK.
Diagnostics
The output voltage at all outputs is compared with the diagnostic threshold, typ 0,55
V
DD
= V
DG
.
Diagnostic Table for outputs:
Fault condition 1) "output short circuit to Vbat" : For SFPD = Low the output was switched on and the voltage at
the output exceeded the diagnostics threshold due to overcurrent, the output overload latch was set and the
output has been switched off. The diagnostic bit is high.
: For SFPD = High the output was switched on and the voltage at the output exceeds the diagnostics threshold.
The output operates in current regulation mode or has been switched off due to thermal shutdown. The status
bit is high.
Fault condition 2) "open load" or "output short circuit to GND" : the output is switched off and the voltage at the
output drops below the diagnostics threshold, because the load current is lower than the output diagnostic cur-
rent source, the load is interrupted. The diagnostic bit is low.
At the falling edge of CSB the output status data are transferred to the shift register. When SCB is low, data bits
contained in the shift register are transferred to SO output at every rising SCLK edge.
Output
Output-voltage
Status-bit
Output-mode
off
> DG-threshold
high
correct operation
off
< DG-threshold
low
fault condition 2)
on
< DG-threshold
low
correct operation
on
> DG-threshold
high
fault condition 1)
CSB
SCLK
SI
SO
tsclch
thclcl
tclh
tcll
tsclcl
thclch
tcsdv
tpcld
tpchdz
not defined
D7
D0
tscld
thcld
D7
D6
D0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9823013TR | 功能描述:電源開(kāi)關(guān) IC - 配電 Octal Lowside Driver Bulb, Resistive RoHS:否 制造商:Exar 輸出端數(shù)量:1 開(kāi)啟電阻（最大值）:85 mOhms 開(kāi)啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| L9824 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| L9824D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| L9825 | 功能描述:電源開(kāi)關(guān) IC - 配電 Octal Low Side RoHS:否 制造商:Exar 輸出端數(shù)量:1 開(kāi)啟電阻（最大值）:85 mOhms 開(kāi)啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| L9825_03 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Octal Low-side Driver For Resistive and Inductive Loads With Serial / Parallel Input Control, Output Protection and Diagnostic |
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