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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)： | 7/12頁(yè) |
| 文件大?。?/td> | 168K |
| 代理商： | L9823 |
7/12
L9823
Output Control register structure :
Power outputs characteristics
for flyback current, outputs short circuit protection and diagnostics
For output currents flowing into the circuit the output voltages are limited. The typical value of this voltage is 50V.
This function allows that the flyback current of a inductive load recirculates into the circuit; the flyback energy is
absorbed in the chip.
Output short circuit protection SFPD = Low (dedicated for loads without inrush current): when the output current
exceeds the short circuit threshold, the corresponding output overload latch is set after a delay time t
dly SCB
and
the output is switched off. The delay timer is started after each rise of CSB and valid datas are transfered to the
output control register. If the short takes place after the delay time has elapsed the shutdown is immediate (with-
in 15μs).
Output short circuit protection SFPD = High (dedicated for loads with inrush current, as lamps): when the load
current would exceed the short circuit limit value, the corresponding output goes in a current regulation mode.
The output current is determined by the output characteristics and the output voltage depends on the load re-
sistance. In this mode high power is dissipated in the output transistor and its temperature increases rapidly.
When the power transistor temperature exceeds the thermal shutdown threshold, the overload latch is set and
the corresponding output switched off.
For the load diagnostic in output off condition each output features a diagnostic current sink, of typ 60μA.
FUNCTIONAL DESCRIPTION
General
The L9823 integrated circuit features 8 power low-side-driver outputs. Data is transmitted to the device using
the Serial Peripheral Interface = SPI protocol. The power outputs features voltage clamping function for flyback
current recirculation and are protected against short circuit to Vbat.
The diagnostics recognizes two outputs fault conditions: 1) overcurrent and thermal overload in switch-ON con-
dition and 2) open load or short to GND in switch-OFF condition for all outputs. The outputs status can be read
out via the serial interface.
The chip internal Reset is a OR function of the external Reset signal and internally generated undervoltage Re-
set signal.
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
MSB
LSB
Control-bit output 7
Control-bit output 6
Control-bit output 5
Control-bit output 4
Control-bit output 3
Control-bit output 2
Control-bit output 1
Control-bit output 0
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PDF描述 |
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| L9825 | Octal Low-side Driver For Resistive and Inductive Loads With Serial / Parallel Input Control, Output Protection and Diagnostic |
| L9826 | Octal Low-Side Driver for resistive and inductive loads with serial/parallel input control, output protection and diagnostic |
| L9830 | MONOLITHIC LAMP DIMMER |
| L9848 | OCTAL CONFIGURABLE LOW/HIGH SIDE DRIVER |
| L9903 | MOTOR BRIDGE CONTROLLER |
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(chēng):未知廠家 功能描述: |
| L9824D | 制造商:未知廠家 制造商全稱(chēng):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(chēng):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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