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参数资料
| 型号： | MAX7504MUA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/13页 |
| 文件大小： | 710K |
| 描述： | IC TEMP SENSOR DIGIT 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 温度监视系统（传感器），监视器 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC（三角积分型），寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
See Figure 4. Set bit D1 to 1 to run the overtemperature
shutdown block in interrupt mode. OS is asserted in
interrupt mode when the temperature rises above the
T
OS
value or falls below the T
HYST
value. OS is
deasserted only after performing a read operation.
Set bit D0, the shutdown bit, to zero for normal opera-
tion. Set bit D0 to 1 to shut down the MAX7500
MAX7504 internal blocks, dropping the supply current
to 3礎. The I
2
C interface remains active as long as the
shutdown bit is set. The T
OS
, T
HYST
, and configuration
registers can still be written to and read from while in
shutdown.
T
OS
and T
HYST
Registers
In comparator mode, the OS output behaves like a ther-
mostat. The output asserts when the temperature rises
above the limit set in the T
OS
register. The output
deasserts when the temperature falls below the limit set
in the T
HYST
register. In comparator mode, the OS output
can be used to turn on a cooling fan, initiate an emer-
gency shutdown signal, or reduce system clock speed.
In interrupt mode, exceeding T
OS
also asserts OS. OS
remains asserted until a read operation is performed on
any of the registers. Once OS has asserted due to
crossing above T
OS
and is then reset, it is asserted
again only when the temperature drops below T
HYST
.
The output remains asserted until it is reset by a read.
Putting the MAX7500MAX7504 into shutdown mode
also resets OS.
The T
OS
and T
HYST
registers are accessed with 2
bytes, with bits D15D7 containing the data. Bits
D6D0 are dont cares when writing to these two regis-
ters and read-back zeros when reading from these reg-
isters. The LSB represents 0.5癈 while the MSB
represents 64癈. See Table 7.
Digital Temperature Sensors and Thermal
Watchdog with Bus Lockup Protection
_______________________________________________________________________________________ 9
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
Fault queue
Fault queue
OS polarity
Comparator/
interrupt
Shutdown
Table 5. Configuration Register Definition
D4
D3
NO. OF FAULTS
0
0
1 (POR state)
0
1
2
1
0
4
1
1
6
Table 6. Configuration Register Fault
Queue Bits
T
OS
T
HYST
OS OUTPUT
(COMPARATOR MODE)
OS SET ACTIVE LOW
OS OUTPUT
(INTERRUPT MODE)
OS SET ACTIVE LOW
READ
OPERATION
READ
OPERATION
READ
OPERATION
TEMPERATURE
Figure 4. OS Timing Diagram
UPPER BYTE
LOWER BYTE
COMMAND
D15
D14
D13
D12
D11 D10
D9
D8
D7
D6 D5 D4 D3 D2 D1 D0
Write
Sign bit
1 = negative
0 = positive
MSB
64癈
32癈
16癈
8癈
4癈
2癈
1癈
LSB
0.5癈
X
X
X
X
X
X
X
Read
Sign bit
1 = negative
0 = positive
MSB
64癈
32癈
16癈
8癈
4癈
2癈
1癈
LSB
0.5癈
0
0
0
0
0
0
0
Table 7. T
OS
and T
HYST
Register Definitions
X = Dont care.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX750ACPA | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX750ACSA | 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX750ACSA+ | 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX750ACSA+T | 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX750ACSA-T | 功能描述:直流/直流开关调节器 Adjustable PWM Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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