参数资料
型号: L6728AH
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: SWITCHING CONTROLLER, PDSO10
封装: 3 X 3 MM, ROHS COMPLIANT, VFDFPN-10
文件页数: 33/33页
文件大小: 1033K
代理商: L6728AH
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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相关代理商/技术参数
参数描述
L6728AHTR 功能描述:电流型 PWM 控制器 HIGH FREQ PWM CNTRL W/PO 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
L6728ATR 功能描述:电压模式 PWM 控制器 HIGH FREQ SINGLE PHASE PWM CNTRL 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
L6728D 功能描述:电流型 PWM 控制器 SNGL PHASE PWM 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
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