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| 型号： | L6728D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 30 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, DFN-10 |
| 文件页数： | 33/33页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6728DTR | 功能描述:电流型 PWM 控制器 Single-Phase PWM 5V to 12V Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| L6728H | 功能描述:电压模式 PWM 控制器 Sgl Output 300 KHz DFN-10 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| L6728HTR | 功能描述:电流型 PWM 控制器 SINGLE PHASE PWM CNTRL PWR GOOD RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| L6728TR | 功能描述:DC/DC 开关控制器 Sngl phase PWM controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6730 | 功能描述:DC/DC 开关控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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