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參數(shù)資料
| 型號(hào)： | MAX6689UP9A+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 7-Channel Precision Temperature Monitor |
| 中文描述： | 7-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, MO-153AC, TSSOP-20 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大?。?/td> | 240K |
| 代理商： | MAX6689UP9A+T |
MAX6689
In both cases, the alert is cleared even if the fault condi-
tion exists, but the ALERT output reasserts at the end of
the next conversion. The bits indicating the fault for the
OVERT interrupt output clear only on reading the status 2
register even if the fault conditions still exist. Reading the
status 2 register does not clear the OVERT interrupt out-
put. To eliminate the fault condition, either the measured
temperature must drop below the temperature threshold
minus the hysteresis value (4°C), or the trip temperature
must be set at least 4°C above the current temperature.
Applications Information
Remote-Diode Selection
The MAX6689 directly measures the die temperature of
CPUs and other ICs that have on-chip temperature-
sensing diodes (see the Typical Application Circuit) or
it can measure the temperature of a discrete diode-
connected transistor.
Effect of Ideality Factor
The accuracy of the remote temperature measure-
ments depends on the ideality factor (n) of the remote
“diode” (actually a transistor). The MAX6689 is opti-
mized for n = 1.012. A thermal diode on the substrate
of an IC is normally a pnp with the base and emitter
brought out the collector (diode connection) grounded.
DXP_ must be connected to the anode (emitter) and
DXN_ must be connected to the cathode (base) of this
pnp. If a sense transistor with an ideality factor other
than 1.012 is used, the output data is different from the
data obtained with the optimum ideality factor.
Fortunately, the difference is predictable. Assume a
remote-diode sensor designed for a nominal ideality
7-Channel Precision Temperature Monitor
12
______________________________________________________________________________________
BIT
NAME
POR
STATE
FUNCTION
7 (MSB)
STOP
0
Standby-Mode Control Bit. If STOP is set to logic 1, the MAX6689 stops
converting and enters standby mode.
6POR
0
Reset Bit. Set to logic 1 to put the device into its power-on state. This bit is self-
clearing.
5
TIMEOUT
0
Timeout Enable Bit. Set to logic 0 to enable SMBus timeout.
4
Fast remote 1
0
Channel 1 Fast-Conversion Bit. Set to logic 1 to enable fast conversion of
channel 1.
3
Resistance
cancellation
0
Resistance Cancellation Bit. When set to logic 1, the MAX6689 cancels series
resistance in the channel 1 thermal diode.
2
Reserved
0
—
1
Reserved
0
—
0
Reserved
0
—
Table 4. Configuration 1 Register
Table 5. Configuration 2 Register
BIT
NAME
POR
STATE
FUNCTION
7 (MSB)
Reserved
0
—
6
Mask Local ALERT
0
Local Alert Mask. Set to logic 1 to mask local channel
ALERT.
5
Mask ALERT 6
0
Channel 6 Alert Mask. Set to logic 1 to mask channel 6
ALERT.
4
Mask ALERT 5
0
Channel 5 Alert Interrupt Mask. Set to logic 1 to mask channel 5
ALERT.
3
Mask ALERT 4
0
Channel 4 Alert Mask. Set to logic 1 to mask channel 4
ALERT.
2
Mask ALERT 3
0
Channel 3 Alert Interrupt Mask. Set to logic 1 to mask channel 3
ALERT.
1
Mask ALERT 2
0
Channel 2 Alert Mask. Set to logic 1 to mask channel 2
ALERT.
0
Mask ALERT 1
0
Channel 1 Alert Mask. Set to logic 1 to mask channel 1
ALERT.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6689UP9E | 制造商:Maxim Integrated Products 功能描述:7-CHANNEL PRECISION TEMPERATURE MONITOR - Rail/Tube |
| MAX6689UP9E-T | 制造商:Maxim Integrated Products 功能描述:7-CHANNEL PRECISION TEMPERATURE MONITOR - Tape and Reel |
| MAX668EUB | 功能描述:電流型 PWM 控制器 1.8V to 28V Step-Up RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX668EUB | 制造商:Maxim Integrated Products 功能描述:PWM STEP UP CONTROLLER SMD SOIC10 |
| MAX668EUB+ | 功能描述:電流型 PWM 控制器 1.8V to 28V Step-Up RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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