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參數(shù)資料
| 型號： | 101-0558 |
| 廠商： | Rabbit Semiconductor |
| 文件頁數(shù)： | 83/94頁 |
| 文件大?。?/td> | 0K |
| 描述： | COMPUTER SNG BD BL1800 512K SRAM |
| 標(biāo)準(zhǔn)包裝： | 10 |
| 系列： | SBC |
| 模塊/板類型： | 單板計算機模塊 |
| 適用于相關(guān)產(chǎn)品： | BL1800 |
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80
Jackrabbit (BL1800)
The linear voltage regulator is simply a fixed-voltage regulator with a ±5% voltage output
tolerance as the temperature changes. The regulator has a small heat sink, which increases
the maximum external input voltage. Higher external input voltages increase the voltage
dropped by the regulator. The Vcc coming out of the regulator is always 5 V.
The power necessarily dissipated by the regulator can be calculated if both the external
input voltage and the current drawn by the Jackrabbit board and daughterboards connected
to the Jackrabbit board are known. The current provided by the high-power output drivers
does not have to be included if a separate power supply is connected to K so that power
does not come from Vcc.
The linear regulator maintains its output voltage to within ±5% as long as the heat sink is
dissipating less than 2 W. The regulator will operate outside its specifications when the
heat sink is dissipating 2 W to 3.3 W. Thermal shutdown turns the regulator off above
3.3 W. Figure C-2 shows the power operating curves.
Figure C-2. 7805 Linear Regulator Power Operating Curve
The Jackrabbit operating at 14.74 MHz with no loading at the outputs typically consumes
105 mA when the programming cable is connected, and 95 mA when the programming
cable is not connected. This means that DCIN can safely be from 7.5 V to 25 V. An addi-
tional 50 mA is available for a daughterboard, but the voltage regulation would suffer
slightly.
510
15
20
25
30
35
350
300
250
200
150
100
50
Current
(mA)
DCIN (V)
3.3 W
__________
(DCIN 5 V)
2 W
__________
(DCIN 5 V)
Regulated
within
specifications
Regulated
outside
specifications
Undervolt
age
dropout
area
Thermal
shutdown
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| 101-0411 | INTERFACE 12KEYDISP ETHNT OP6700 |
| AT24C02A-10PI-2.7 | IC EEPROM 2KBIT 400KHZ 8DIP |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 10105584 | 制造商:Amphenol Corporation 功能描述:10-341374-222 - Bulk |
| 101055OO | 制造商:TE Connectivity 功能描述: |
| 101056084S | 制造商:Amphenol Aerospace 功能描述:CONNECTOR |
| 101-0561 | 功能描述:模塊化系統(tǒng) - SOM RCM3400 RABBITCORE RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in |
| 10-105610-02S | 制造商:Amphenol Aerospace 功能描述:PLUG |
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