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參數(shù)資料
| 型號： | XRP7740ILBTR-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 1610K |
| 描述： | IC REG 5OUT BCK/LINEAR 40TQFN |
| 產(chǎn)品變化通告： | Packing Change 15/Oct/2010 |
| 標準包裝： | 3,000 |
| 系列： | PowerXR |
| 拓撲： | 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)動器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 是 |
| 電源電壓： | 6.5 V ~ 20 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： | 帶卷 (TR) |
| 配用： | 1016-1352-ND - EVAL BOARD FOR XRP7740 1016-1344-ND - IN-SOCKET PROG BRD VIA USB/GUI |
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?2012 Exar Corporation
14/28
Rev. 1.2.2
Fig. 190: VCCA (green) Startup Waveform
STANDBY LOW DROP-OUT REGULATOR
This 100mA low drop-out regulator can be programmed as 3.3V or 5V in SET_STBLDO_EN_CONFIG
register. Its output is seen on the LDOOUT Pin. This LDO is fully controllable via the Enable Pin
(configured to turn on as soon as power is applied), a GPIO, and/or I
2
C communication.
The standby LDO should be bypassed with a minimum of 2.2uF ceramic capacitor.
ENABLING, DISABLING AND RESET
The XRP7708 is enabled via raising the ENABLE Pin high. The chip can then be disabled by
lowering the same ENABLE Pin. There is also the capability for resetting the Chip via an I
2
C
SOFTRESET Command.
For enabling a specific channel, there are several ways that this can be achieved. The chip can be
configured to enable a channel at start-up as the default configuration residing in the non-volatile
configuration memory of the IC. The channels can also be enabled using GPIO pins and/or an I
2
C
Bus serial command. The registers that control the channel enable functions are the
SET_EN_CONFIG and SET_CH_EN_I2C.
INTERNAL GATE DRIVERS
The XRP7708 integrates Internal Gate Drivers for all 4 PWM channels. These drivers are optimized
to drive both high-side and low side N-MOSFETs for synchronous operation. Both high side and low
side drivers have the capability of driving 1 nF load with 30 ns rise and fall time. The drivers have
built-in non-overlapping circuitry to prevent simultaneous conduction of the two MOSFETs.
FAULT HANDLING
While the chip is operating there are four different types of fault handling:
" Under Voltage Lockout (UVLO) monitors the input voltage to the chip, and the chip will
shutdown all channels if the voltage drops to critical levels.
" Over Temperature Protection (OTP) monitors the temperature of the chip, and the chip
will shutdown all channels if the temperature rises to critical levels.
" Over Voltage Protection (OVP) monitors the voltage of channel and will shutdown the
channel if it surpasses its voltage threshold.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRP77XXEVB-XCM | 功能描述:EVAL BOARD W/USB-I2C FOR XRP7704 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓撲結(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| XRP77XXEVB-XPM | 功能描述:電源管理IC開發(fā)工具 XRP77XXEVB-XPM RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| XRP9710EVB | 制造商:Exar Corporation 功能描述:Evaluation Board for the XRP9710 Series Dual 6 A Programmable Power Module 制造商:Exar Corporation 功能描述:XRP9710 eval |
| XRP9710EVB-DEMO-1 | 功能描述:XRP9710 - DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board 制造商:exar corporation 系列:- 零件狀態(tài):有效 主要用途:DC/DC，步降 輸出和類型:2，非隔離 功率 - 輸出:- 電壓 - 輸出:1.8V，2.5V 電流 - 輸出:6A，6A 電壓 - 輸入:5.5 V ~ 22 V 穩(wěn)壓器拓撲:降壓 頻率 - 開關(guān):- 板類型:完全填充 所含物品:板 使用的 IC/零件:XRP9710 標準包裝:1 |
| XRP9710EY-F | 制造商:Exar Corporation 功能描述:Dual 6Amp Programmable Power Module |
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