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參數(shù)資料
| 型號(hào)： | XRP7714ILB-0X14-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 16/29頁 |
| 文件大?。?/td> | 1009K |
| 描述： | IC REG 5OUT BCK/LINEAR 40TQFN |
| 標(biāo)準(zhǔn)包裝： | 490 |
| 系列： | PowerXR |
| 拓?fù)洌?/td> | 降壓（降壓）同步（4），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數(shù)： | 5 |
| 頻率 - 開關(guān)： | 1.5MHz |
| 電壓/電流 - 輸出 1： | 控制器 |
| 電壓/電流 - 輸出 2： | 控制器 |
| 電壓/電流 - 輸出 3： | 控制器 |
| 帶 LED 驅(qū)動(dòng)器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 是 |
| 電源電壓： | 4.75 V ~ 25 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 40-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-TQFN（6x6） |
| 包裝： | 托盤 |
| 其它名稱： | 1016-1700 |
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?2011 Exar Corporation
16/29
Rev. 1.1.6
" Over Temperature Fault
If the over temperature condition occurs both the OTP and OTPW bits will be set in the
READ_OVV_UVLO_OVT_FLAG register and the IC will shut down all channels (but I
2
C will remain
operational). The actual over temperature threshold can be set by the user by using a 7bit
SET_THERMAL_SHDN register with an LSB of 5K.
If the over temperature fault condition clears, then the IC can be set to restart the chip
automatically. The restart temperature threshold can be set by the SET_THERMAL_RESTART
register.
OUTPUT VOLTAGE SETTING AND MONITORING
The Output Voltage setting is controlled by the SET_VOUT_TARGET_CHx register. This register
allows the user to set the output voltage with a resolution of 50mV for output voltages between 0
and 2.5V and with a resolution of 100mV for output voltages between 2.6V and 5.1V. Output
voltages higher than 5.1V can be achieved by adding an external voltage divider network. The
output voltage of a particular channel can be read back using the READ_VOUTx register.
Output Voltage from 0.9V to 5.1V
Per the equation below, for values between 0.9V and 5.1V the output voltage is equal to the binary
number stored in the SET_VOUT_TARGET_CHx register multiplied by 50mV. When programming an
output voltage from 2.6V to 5.1V, odd binary values should be avoided. As a result, the set
resolution for an output voltage higher than 2.5V is 100mV.
5
55H5G
= 5F585G_5I5B5H5G_5G545E5:585G_565;5K ?505Z5I
Output VOUT Higher Than 5.1V
To set the output voltage higher than 5.1V, the user needs to add an external voltage divider. The
resistors used in the voltage divider should be below 10k&. The SET_VOUT_TARGET_CHx register
should be set to 0x32 which is equivalent to an output voltage of 2.5V without the external divider
network. The output voltage regulation in this case might exceed 2% due to extra error from the
resistor divider. R1 and R2 follows the definition below.
Voutx pin
Vout>5.1V
R1
R2
Fig. 23: External divider network for high output voltage
5
55H5G
= ?/DIV>
5
1
5
2
+ 1??5F585G_5I5B5H5G_5G545E5:585G_565;5K ?505Z5I
Output Voltage Lower Than 0.9V
The XRP7714 can be programmed to regulate an output voltage lower than 0.9V. However, in this
case the specification of ?0mV output voltage accuracy is not guaranteed.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRP7714ILB-0X18-F | 功能描述:電壓模式 PWM 控制器 4CH DIGITAL PWM CTRL I2C INTERFACE RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| XRP7714ILB-0X1C-F | 功能描述:電壓模式 PWM 控制器 4CH DIGITAL PWM CTRL I2C INTERFACE RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| XRP7714ILB-F | 功能描述:軟開關(guān) PWM 控制器 4Ch Digital Pwr Cntr w/LDO prog. thru PC RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| XRP7714ILBTR-0X10-F | 制造商:EXAR 制造商全稱:EXAR 功能描述:Quad Channel Digital PWM Step Down Controller |
| XRP7714ILBTR-0X14-F | 制造商:EXAR 制造商全稱:EXAR 功能描述:Quad Channel Digital PWM Step Down Controller |
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