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| 型号： | MC35XS3400DPNAR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 25/46页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH HIGH SIDE QUAD 24QFN |
| 标准包装： | 1,200 |
| 类型： | 高端开关 |
| 输出数： | 4 |
| Rds（开）： | 35 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 6A |
| 输入电压： | 6 V ~ 20 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-PowerQFN |
| 供应商设备封装： | 24-PQFN（12x12） |
| 包装： | 带卷 (TR) |
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FUNCTIONAL DEVICE OPERATION
PROTECTION AND DIAGNOSTIC FEATURES
FAULT MODE
The 35XS3400 is in Fault mode when:
? V PWR and V DD are within the normal voltage range,
? wake-up = 1,
? fail = X,
? fault=1.
This device indicates the faults below as they occur by
driving the FS pin to logic [0] for RST input is pulled up:
? Over-temperature fault,
? Over-current fault,
? Severe short-circuit fault,
? Output(s) shorted to VPWR fault in OFF state,
? OpenLoad fault in OFF state,
? Over-voltage fault (enabled by default),
? Under-voltage fault.
The FS pin will automatically return to logic [1] when the
fault condition is removed, except for over-current, severe
short-circuit, over-temperature and under-voltage which will
be reset by a new turn-on command (each fault_control
signal to be toggled).
Fault information is retained in the SPI fault register and is
available (and reset) via the SO pin during the first valid SPI
The OpenLoad fault in ON state is only reported through
SPI register without effect on the corresponding output state
(HS[x]) and the FS pin.
START-UP SEQUENCE
The 35XS3400 enters in Normal mode after start-up if
following sequence is provided:
? VPWR and VDD power supplies must be above their
under-voltage thresholds,
? generate wake-up event (wake-up=1) from 0 to 1 on
RSTB. The device switches to Normal mode with SPI
register content is reset (as defined in Table 11 and
after 50 ? s typical and all SPI registers are set to default
values (set to logic [0]). The UV fault is reported in the
SPI status registers.
And, in case of the PWM module is used (PWM_en bit is
set to logic [1]) with an external reference clock:
? apply PWM clock on IN0 input pin after maximum
200 ? s (min. 50 ? s).
If the correct start-up sequence is not provided, the PWM
function is not guaranteed.
communication.
PROTECTION AND DIAGNOSTIC FEATURES
hson signal
PWM
PROTECTIONS
Over-temperature Fault
The 35XS3400 incorporates over-temperature detection
and shutdown circuitry for each output structure.
Two cases need to be considered when the output
temperature is higher than T SD :
? If the output command is ON: the corresponding output
is latched OFF. FS will be also latched to logic [0]. To
delatch the fault and be able to turn ON again the
outputs, the failure condition must disappear and the
autoretry circuitry must be active or the corresponding
output must be commanded OFF and then ON (toggling
fault_control signal of corresponding output) or
V SUPPLY(POR) condition if V DD = 0.
? If the output command is OFF: FS will go to logic [0] until
the corresponding output temperature will be below
T SD .
For both cases, the fault register OT[0:3] bit into the status
register will be set to [1]. The fault bits will be cleared in the
status register after a SPI read command.
Over-current Fault
The 35XS3400 incorporates output shutdown in order to
protect each output structure against resistive short-circuit
condition. This protection is composed by eight predefined
current levels (time dependent) to fit 28 W bulb profiles.
In the first turn-on, the lamp filament is cold and the current
will be huge. fault_control signal transition from logic [0] to [1]
or an auto-retry define this event. In this case, the over-
current protection will be fitted to inrush current, as shown in
OC[1:0] bits select over-current slope speed and OCHI1
current step can be removed in case the OCHI bit is set to [1].
Over-current thresholds
fault_control
hson
In steady state, the wire harness will be protected by
OCLO2 current level by default. Three other DC over-current
levels are available: OCLO1 or OCLO3 or OCLO4 based on
the state of the OCLO[1,0] bits.
If the load current level ever reaches the over-current
detection level, the corresponding output will latch the output
OFF and FS will be also latched to logic [0]. To delatch the
fault and be able to turn ON again the corresponding output,
35XS3400
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
25
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相关代理商/技术参数 |
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| MC35XS3500DHFK | 功能描述:电源开关 IC - 配电 PENTA 35MOHM ESWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC35XS3500DHFKR2 | 功能描述:电源开关 IC - 配电 PENTA 35MOHM ESWITCH RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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