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參數資料
| 型號： | MAX6649YMUA+T |
| 廠商： | Maxim Integrated |
| 文件頁數： | 1/16頁 |
| 文件大小： | 194K |
| 描述： | IC SENSOR REMOTE SMBUS 8UMAX |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | -55°C ~ 125°C，外部傳感器 |
| 精確度： | ±3°C 本地（最大），±3.2°C 遠程（最大） |
| 拓撲： | ADC，多路復用器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
General Description
The MAX6646/MAX6647/MAX6649 are precise, two-
channel digital temperature sensors. The devices accu-
rately measure the temperature of their own die and a
remote PN junction, and report the temperature in digital
form using a 2-wire serial interface. The remote PN junc-
tion is typically the emitter-base junction of a common-
collector PNP on a CPU, FPGA, or ASIC.
The 2-wire serial interface accepts standard system man-
agement bus (SMBus) write byte, read byte, send byte,
and receive byte commands to read the temperature
data and to program the alarm thresholds. To enhance
system reliability, the MAX6646/MAX6647/MAX6649
include an SMBus timeout. A fault queue prevents the
ALERT and OVERT outputs from setting until a fault has
been detected one, two, or three consecutive times
(programmable).
The MAX6646/MAX6647/MAX6649 provide two system
alarms: ALERT and OVERT. ALERT asserts when any of
four temperature conditions are violated: local overtem-
perature, remote overtemperature, local undertempera-
ture, or remote undertemperature. OVERT asserts when
the temperature rises above the value in either of the two
OVERT limit registers. The OVERT output can be used to
activate a cooling fan, or to trigger a system shutdown.
Measurements can be done autonomously, at the pro-
grammed conversion rate, or in a single-shot mode. The
adjustable conversion rate allows optimizing supply cur-
rent and temperature update rate to match system needs.
Remote accuracy is ?癈 maximum error between +60癈
and +145癈 with no calibration needed. The MAX6646/
MAX6647/MAX6649 operate from -55癈 to +125癈, and
measure temperatures between 0癈 and +145癈. The
MAX6646/MAX6647/MAX6649 are available in an 8-pin
糓AX
?/DIV>
package.
Applications
Features
f Dual Channel: Measures Remote and Local
Temperature
f 0.125?/SPAN>C Resolution
f High Accuracy ?/SPAN>1?/SPAN>C (max) from +60?/SPAN>C to +145?/SPAN>C
(Remote), and ?癈 (max) from +60癈 to +100癈
(Local)
f Measures High-Ideality Thermal Diodes Up to
+170癈 (Apparent)
+145癈 (Real)
f Two Alarm Outputs: ALERT and OVERT
f Programmable Under/Overtemperature Alarm
Temperature Thresholds
f Programmable Conversion Rate
f SMBus-Compatible Interface
f SMBus Timeout
+145癈 Precision SMBus-Compatible Remote/
Local Sensors with Overtemperature Alarms
Ordering Information
V
CC
DXP
DXN
10k?EACH
CLOCK
TO FAN DRIVER OR
SYSTEM SHUTDOWN
3.3V
DATA
INTERRUPT TO 糚
200?/DIV>
0.1糉
SDA
SCLK
ALERT
GND
2200pF
糚
MAX6646
MAX6647
MAX6649
OVERT
Typical Operating Circuit
19-2540; Rev 4; 7/12
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN-
PACKAGE
MEASURED
TEMP RANGE
MAX6646MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6647MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
MAX6649MUA+
-55癈 to
+125癈
8 糓AX
0癈 to +145癈
Selector Guide, Pin Configurations, and Functional Diagram
appear at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
糓AX is a registered trademark of Maxim Integrated Products, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX664C/D | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX664CJA | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX664CPA | 功能描述:低壓差穩壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX664CPA+ | 功能描述:低壓差穩壓器 - LDO 5V Prog uPower Voltage Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX664CSA | 功能描述:低壓差穩壓器 - LDO 5V Prog uPower Voltage Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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