参数资料
| 型号： | ATA6838C-PXQW |
| 厂商： | Atmel |
| 文件页数： | 7/18页 |
| 文件大小： | 0K |
| 描述： | IC DVR HEX HALF BRIDGE 24QFN |
| 标准包装： | 6,000 |
| 类型： | 半桥，高端/低端 |
| 输入类型： | 串行 |
| 输出数： | 6 |
| 导通状态电阻： | 1 欧姆 |
| 电流 - 输出 / 通道： | 950mA |
| 电流 - 峰值输出： | 1.25A |
| 电源电压： | 7 V ~ 40 V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
| 其它名称： | ATA6838C-PXQW-ND |
3.2
3.3
3.4
3.5
3.6
Power-supply Fail
In case of undervoltage at pin VS, an internal timer is started. When during a permanent undervoltage the delay time (t dUV ) is
reached, the power supply fail bit (PSF) in the output register is set and all outputs are disabled. When normal voltage is present
again, the outputs are enabled immediately. The PSF bit remains high until it is reset by the SRR bit in the input register.
Open-load Detection
If the open-load detection bit (OLD) is set to low, a pull-up current for each high-side switch and a pull-down current for each
low-side switch is turned on (open-load detection current I HS1-6 , I LS1-6 ). If V VS – V HS1-6 or V LS1-6 is lower than the open-load
detection threshold (open-load condition), the corresponding bit of the output in the output register is set to high. Switching on
an output stage with OLD bit set to low disables the open load function for this output.
Overtemperature Protection
If the junction temperature exceeds the thermal prewarning threshold, T jPW set, the temperature prewarning bit (TP) in the
output register is set. When the temperature falls below the thermal prewarning threshold, T jPW reset, the bit TP is reset. The TP
bit can be read without transferring a complete 16-bit data word: with CS = high to low, the state of TP appears at pin DO. After
the microcontroller has read this information, CS is set high and the data transfer is interrupted without affecting the state of the
input and output registers.
If the junction temperature exceeds the thermal shutdown threshold, T j switch off , the outputs are disabled and all bits in the output
register are set high. The outputs can be enabled again when the temperature falls below the thermal shutdown threshold,
T j switch on , and when a high has been written to the SRR bit in the input register. Thermal prewarning and shutdown threshold
have hysteresis.
Short-circuit Protection
The output currents are limited by a current regulator. Current limitation takes place when the overcurrent limitation and
shutdown threshold (I HS1-6 , I LS1-6 ) are reached. Simultaneously, an internal timer is started. The shorted output is disabled when
during a permanent short the delay time (t dSd ) programmed by the short-circuit timer bit (SCT) is reached. Additionally, the
short-circuit detection bit (SCD) is set. If the temperature prewarning bit TP in the output register is set during a short, the
shorted output is disabled after t dSd and SCD bit is set. By writing a high to the SRR bit in the input register, the SCD bit is reset
and the disabled outputs are enabled.
Inhibit
There are two ways to inhibit the Atmel ? ATA6838C:
●
●
Set bit SI in the input register to 0
Switch pin INH to 0V
In both cases, all output stages are turned off but the serial interface stays active. The output stages can be activated again by
bit SI = 1 (when INH = VCC) or by pin INH switched back to VCC (when SI = 1).
Atmel ATA6838C [DATASHEET]
9237F–AUTO–05/12
7
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相关代理商/技术参数 |
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| ATA6838C-PXQW-1 | 功能描述:IC MOTOR DRIVER SER 24QFN 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:在售 电机类型 - 步进:- 电机类型 - AC，DC:有刷直流 功能:驱动器 - 全集成，控制和功率级 输出配置:半桥（6） 接口:SPI 技术:功率 MOSFET 步进分辨率:- 应用:通用 电流 - 输出:950mA 电压 - 电源:4.75 V ~ 5.25 V 电压 - 负载:5.5 V ~ 40 V 工作温度:-40°C ~ 150°C（TJ） 安装类型:表面贴装 封装/外壳:24-VQFN 裸露焊盘 供应商器件封装:24-QFN（5x5） 标准包装:1 |
| ATA6838-PXQW | 功能描述:功率驱动器IC 1A 5A Hex Half Bridge Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| ATA6839 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:High Temperature Hex Half-bridge Driver with Serial Input Control |
| ATA6839-PXQW | 功能描述:功率驱动器IC 1A 5A Hex Half Bridge Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| ATA6842 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Automotive Failsafe System IC |
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