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參數(shù)資料
| 型號： | L6728AHTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, VFDFPN-10 |
| 文件頁數(shù)： | 33/33頁 |
| 文件大小： | 1033K |
| 代理商： | L6728AHTR |
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L6728AH
Device description
Doc ID 15726 Rev 1
9/33
4
Device description
L6728AH is a single-phase PWM controller with embedded high-current drivers that
provides complete control logic and protections to realize in an easy and simple way a
general DC-DC step-down converter. Designed to drive N-channel MOSFETs in a
synchronous buck topology, with its high level of integration this 10-pin device allows
reducing cost and size of the power supply solution also providing real-time PGOOD in a
compact VFQFPN10 3x3 mm.
L6728AH 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 ±1% accuracy over line and temperature
variations. The switching frequency is internally set to 600 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 avoid load damages, L6728AH provides over-current protection as well as overvoltage,
under voltage and feedback disconnection protection. The over-current trip threshold is
programmable by a simple resistor connected from Lgate to GND. Output current is
monitored across low-side MOSFET RDS(on), saving the use of expensive and space-
consuming sense resistor. Output voltage is monitored through dedicated VSEN pin.
L6728AH implements soft-start increasing the internal reference in closed loop regulation.
low-side-less feature allows the device to perform soft-start over pre-biased output avoiding
high current return through the output inductor and dangerous negative spike at the load
side.
L6728AH is available in a compact VFDFN10 3 x 3 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 |
|---|---|
| L6728ATR | 功能描述:電壓模式 PWM 控制器 HIGH FREQ SINGLE PHASE PWM CNTRL 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 |
| L6728D | 功能描述:電流型 PWM 控制器 SNGL PHASE PWM 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 |
| 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 |
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