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APW7093

APW7093

  • 厂商:

    ANPEC(茂达电子)

  • 封装:

  • 描述:

    APW7093 - 3A, 1MHz, Step Down DC/DC Regulator - Anpec Electronics Coropration

  • 详情介绍
  • 数据手册
  • 价格&库存
APW7093 数据手册
APW7093 3A, 1MHz, Step Down DC/DC Regulator Features • • • • Source/Sink 3A Up to 1MHz Switches Frequency Up to 94% Efficiency Internal PMOS/NMOS Switches - 70mΩ/40mΩ On-Resistance at VIN = 4.5V - 90mΩ/60mΩ On-Resistance at VIN = 3V General Description The APW7093 is a reversible energy flow, constantoff-time, pulse-width modulated (PWM), step-down DC-DC converter. It is ideal for use in notebook and sub-notebook computers that require 1.1V to 5V active termination power supplies. This device features an internal PMOS power switch and internal synchronous rectifier for high efficiency and reduced component count. The internal 90mΩ PMOS power switch and 60mΩ NMOS synchronous-rectifier switch easily deliver continuous load currents up to 3A. The APW7093 accurately tracks an external reference voltage, produces an adjustable output from 1.1V to VIN, and achieves efficiencies as high as 94%. The APW 7093 uses a unique current-mode, constant-off-time, PWM control scheme that allows the output to source or sink current. This feature allows energy to return to the input power supply that otherwise would be wasted. The programmable constant-off-time architecture sets switching frequencies up to 1MHz, allowing the user to optimize performance trade-offs between efficiency, output switching noise, component size, and cost. The APW7093 features an adjustable soft-start to limit surge currents during startup, a 100% duty-cycle mode for low-dropout operation, and a low-power shutdown mode that disables the power switches and reduces supply current below 1µA. The APW7093 is available in a 32-pin QFN with an exposed backside pad or a 16-pin SSOP. • • • • • • • • • ± 1% Output Accuracy 1.1V to VIN Adjustable Output Voltage 3V to +5.5V Input Voltage Range 2KV, VMM > 200V 10ms , Itr > 1 00mA Carrier Tape & Reel Dimension t E Po P P1 D F W Bo Ao D1 Ko Copyright © A NPEC Electronics Corp. Rev. A.5 - Jun., 2005 19 www.anpec.com.tw APW7093 Carrier Tape & Reel Dimension T2 J C A B T1 Application A 6.95 B 5.4 T2 2.2 D0 D1 E 1.75±0.1 C1 13±0.3 F 5.5±0.05 C2 21±0.8 P0 4.0±0.1 T1 13.5±0.5 P1 8.0±0.1 T2 2.0±0.2 P2 2.0±0.05 C 80±1 1.55±0.05 1.55±0.1 W 12.0±0.3 W1 9.5 SSOP-16 T 0.3±0.05 (mm) Cover Tape Dimensions Application SSOP- 16 Carrier Width 16.8 Cover Tape Width 12.3 Devices Per Reel 2500 Customer Service Anpec Electronics Corp. Head Office : 5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. Tel : 886-2-89191368 Fax : 886-2-89191369 Copyright © A NPEC Electronics Corp. Rev. A.5 - Jun., 2005 20 www.anpec.com.tw
APW7093
物料型号: - 型号:APW7093

器件简介: - APW7093是一款可逆能量流、恒定关断时间、脉冲宽度调制(PWM)的降压DC-DC转换器。适用于需要1.1V至5V主动终止电源的笔记本电脑和子笔记本电脑。该装置具有内部PMOS电源开关和内部同步整流器,以提高效率并减少组件数量。内部90mΩ PMOS电源开关和60mΩ NMOS同步整流器开关可以轻松提供高达3A的连续负载电流。

引脚分配: - N.C(无连接):1, 5, 7, 9, 11, 13, 16, 19, 25, 26, 28, 30, 32 - IN(输入电压):2, 4 - LX(电感连接):3, 21, 22, 27, 29 - SS(软启动):6 - EXTREF(外部参考输入):8 - TOFF(关断时间选择):10 - FB(反馈输入):12 - GND(模拟地):14, 17, 背面垫,角片 - REF(参考输出):15 - Vcc(模拟供电电压输入):18 - PGND(电源地):20, 23, 24 - SHDN(关闭控制输入):31

参数特性: - 输入电压范围:3V至5.5V - 输出电压范围:1.1V至VIN - 效率高达94% - 关断供应电流:<1µA - 可编程恒定关断时间操作 - 热关机 - 可调整软启动涌流电流限制 - 输出短路保护 - 无铅可用(符合RoHS)

功能详解: - APW7093在所有负载下均以恒定关断时间模式运行,通过改变PMOS开关的导通时间相对于恒定的关断时间来调节输出电压。 - 同步整流:使用低电阻NMOS同步整流开关代替肖特基二极管,减少导通损耗并提高效率。 - 电流源和汇:根据输出电流要求,电路以两种模式运行。第一种模式为输出从输入电源轨提取电流,第二种模式为输出由另一电源供应时,APW7093作为同步升压运行,从输出取电并返回到输入。

应用信息: - 适用于主板、显卡、电缆或DSL调制解调器、机顶盒、DSP电源、内存电源等。 - 设置输出电压:通过外部电压设置EXTREF引脚来设定APW7093的输出电压。 - 编程开关频率和关断时间/导通时间:通过RTOFF设置PMOS电源开关的关断时间。

封装信息: - 32引脚QFN封装,带有暴露的背面垫。 - 16引脚SSOP封装。
APW7093 价格&库存

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