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參數(shù)資料
| 型號： | L6728D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, DFN-10 |
| 文件頁數(shù)： | 33/33頁 |
| 文件大?。?/td> | 1215K |
| 代理商： | L6728D |
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L6728D
Device description
Doc ID 16498 Rev 1
9/33
5
Device description
The L6728D is a single-phase PWM controller with embedded high-current drivers which
provides complete control logic and protection features for easy implementation of a general
DC-DC step-down converter. Designed to drive N-channel MOSFETs in a synchronous
buck topology, this 10-pin device provides a high level of integration to allow a reduction in
cost and size of power supply solutions, while also providing real-time PGOOD in a compact
DFN10 3x3 mm package.
The L6728D is designed to operate from a 5 V or 12 V supply. The output voltage can be
precisely regulated to as low as 0.8 V with ±0.8% accuracy over line and temperature
variations. The switching frequency is internally set to 300 kHz.
This device provides a simple control loop with a voltage-mode error amplifier. The error
amplifier features a 15 MHz gain-bandwidth product and 8 V/s slew rate, allowing high
regulator bandwidth for fast transient response.
To prevent load damage, the L6728D provides protection against overcurrent, overvoltage,
undervoltage and feedback disconnection. The overcurrent trip threshold is programmable
using a resistor connected from Lgate to GND. Output current is monitored across the low-
side MOSFET RDS(on), eliminating the need for expensive and space-consuming sense
resistors. Output voltage is monitored through the dedicated VSEN pin.
The L6728D implements soft-start by increasing the internal reference in closed-loop
regulation. The low side-less feature allows the device to perform soft-start over a pre-
biased output, avoiding high current return through the output inductor and dangerous
negative spike at the load side.
The L6728D is available in a compact DFN10 3x3 mm package with exposed pad.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6728DTR | 功能描述:電流型 PWM 控制器 Single-Phase PWM 5V to 12V Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 |
| L6728H | 功能描述:電壓模式 PWM 控制器 Sgl Output 300 KHz DFN-10 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 |
| L6728HTR | 功能描述:電流型 PWM 控制器 SINGLE PHASE PWM CNTRL PWR GOOD RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 |
| L6728TR | 功能描述:DC/DC 開關(guān)控制器 Sngl phase PWM controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| L6730 | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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