IRU3033CS

IRU3033CS

  • 厂商:

    IRF

  • 封装:

  • 描述:

    IRU3033CS - 8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC - International Rectifier

  • 详情介绍
  • 数据手册
  • 价格&库存
IRU3033CS 数据手册
Data Sheet No. PD94147 IRU3033 8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC FEATURES DESCRIPTION LDO Controller allows the use of a low cost pass transistor for the I/O supply 8-Pin SOIC combines switching and linear controller Internal pre-regulator eliminates cross talk between switching and linear regulators Automatic shut down of the linear regulator when connected to the Vcc2 detect pin On-Board MOSFET Driver Fastest transient response of any controller method (0 to 100% Duty Cycle in 100ns) 1% Internal Voltage Reference Internal Under-Voltage Lockout protects MOSFET during start-up The IRU3033 IC combines a switching controller and a linear regulator controller all in a compact 8-pin surface mount package, providing a total solution for dual supply processor applications such as an Intel P55C™ , AMD K6™ , as well as Cyrix 6X86L™ and the M2™ processors. Typically in these applications a dual supply regulator converts 5V to 3.3V for I/O supply and a jumper programmable supply of 1.25V to 3.5V for Core supply. The linear regulator controller portion in the IRU3033 is a programmable controller allowing flexibility for the I/O regulator and has a minimum of 50mA drive current capability designed to provide ample current for an external pass transistor. The IC uses an internal regulator generated from the 12V supply to power the controller as well as the 12V supply to drive the power MOSFET, allowing a low cost N-channel MOSFET switch to be used. The IC also includes an error comparator for fast transient response, a precise voltage reference for setting the output voltage as well as a direct drive of the MOSFET for the minimum part count. APPLICATIONS Dual supply low voltage processor applications, such as: P55C™ , CYRIX M2™ , POWER PC™ and AMD K6™ Simple 5V to 3.3V switcher for Pentium with AGP or Pentium II™ applications TYPICAL APPLICATION 5V C1 R9 C8 V12 Drv1 Drv2 VFB2 R8 Gnd D2 R7 Q1 R10 R6 C6 5V I/O 12V CPU Vcc2 Det IRU3033 V12(SW) VFB1 VHYST L2 C3 R3 L1 Q2 C2 D1 R5 C5 R4 Core C7 Figure 1 - Typical application of IRU3033 in a flexible mother board designed for Intel P55™ , P54™ , AMD K5, K6™ as well as Cyrix M1™ and M2™ applications. Notes: P54C, P55C, Pentium II are trademarks of Intel Corp. K5 & K6 are trademarks of AMD Corp. Cyrix 6X86L, M1, M2 are trademarks of Cyrix Corp. Power PC is trademark of IBM Corp. PACKAGE ORDER INFORMATION TA (°C) 0 To 70 Rev. 1.7 07/17/02 8-PIN PLASTIC SOIC (S) IRU3033CS www.irf.com 1 IRU3033 ABSOLUTE MAXIMUM RATINGS V12,V12(SW) Supply Voltages ....................................... Fb Pin Voltages ........................................................ Storage Temperature Range ...................................... Operating Junction Temperature ................................ 20V -0.3V To 5V -65°C To 150°C 0°C To 150°C PACKAGE INFORMATION 8-PIN PLASTIC SOIC (S) TOP VIEW Drv1 1 V12(SW) 2 8 7 6 5 V12 Drv2 VFB2 Gnd VFB1 3 VHYST 4 uJA =1608C/W ELECTRICAL SPECIFICATIONS Unless otherwise specified, the following specification applies over V12=V12(SW) =12V and TA=0 to 70°C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. PARAMETER Linear Controller Section Fb Voltage Initial Accuracy Fb Voltage Total Variation Fb Voltage Line Regulation Fb Input Bias Current Maximum Drive Current V12 Supply Current Switching Controller Section Fb Voltage Initial Accuracy Fb Voltage Total Variation Fb Voltage Line Regulation Fb Input Bias Current Min On Time Min Off Time VHYST Pin Output-HI VHYST Pin Output-LO Supply Current Maximum Duty Cycle Minimum Duty Cycle Gate Drive Rise/Fall Time SYM VFB2 TEST CONDITION TJ=258C, Drv2=VFB2, CL=100m F Drv2=VFB2, CL=100m F 10
IRU3033CS
物料型号: - IRU3033CS (8-Pin SOIC)

器件简介: - IRU3033是一款8脚PWM开关和线性控制器IC,集成了开关控制器和线性调节器控制器,适用于双电源处理器应用,例如Intel P55C、AMD K6、Cyrix M2等。它提供了一个完整的双电源解决方案,通常包括将5V转换为3.3V的I/O供电和1.25V至3.5V的Core供电。

引脚分配: - Drv1: 线性调节器的驱动引脚,连接到12V供电。 - V12(SW): 开关控制器的供电引脚。 - VFB1: 开关控制器的反馈引脚,用于设置Core供电电压。 - VHYST: 开关控制器的滞后引脚。 - Gnd: 地引脚。 - VFB2: 线性调节器的反馈引脚,用于设置I/O供电电压。 - Drv2: 线性调节器的驱动引脚。 - V12: 线性调节器的供电引脚。

参数特性: - 内部预调节器消除了开关和线性调节器之间的串扰。 - 当连接到Vcc2检测引脚时,线性调节器自动关闭。 - 板上MOSFET驱动器,具有最快的瞬态响应(0至100%占空比在100ns内)。 - 1%的内部电压参考。 - 内部欠压锁定保护MOSFET在启动期间。 - 线性控制器部分是一个可编程控制器,允许I/O调节器的灵活性,并设计有最小50mA的驱动电流能力。

功能详解: - IRU3033利用开关调节器技术的高效率为Core供电,同时保持I/O供电的低成本LDO调节器,通过在一个8脚表面贴装封装中提供两种控制功能。 - LDO调节器的输出电压通过两个外部电阻器从1.25V到5V外部可编程。 - 开关控制器的操作是在上电后,输出驱动(Drv1)达到100%占空比,电流通过电感器充电输出电容器,使输出电压增加。

应用信息: - 适用于双电源低压处理器应用,例如Intel P55C、Cyrix M2TM、Power PC和AMD K6TM。 - 简单的5V至3.3V开关器,适用于带有AGP的Pentium或Pentium I ITM应用。

封装信息: - 8-PIN PLASTIC SOIC (S) - TA(°C) 范围:0至70
IRU3033CS 价格&库存

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