APEK8583KLP-33-MH

• Product Introduction

The A8583 is an adjustable-frequency, high-output-current, PWM regulator that integrates a low-resistance, high-end, N-channel MOSFET. The A8583 integrates current-mode control to provide simple compensation, excellent loop stability, and fast transient response. The A8583 utilizes external compensation to be compatible with a wide range of power components to optimize transient response without compromising stability.

The A8583 is adjustable from 4.7 to 36 V input voltages, providing output voltages as low as 0.8 V and load currents of at least 3.5 A. The A8583 features an externally adjustable switching frequency, an externally set soft-start time to minimize inrush current, an EN/SYNC input that enables VOUT and/or synchronized PWM switching frequencies, and a power supply operating (POK) output that indicates VOUT within the regulation range. The A8583 turns on the low-end FET to charge the boost capacitor only when needed, not on every PWM cycle. This results in improved light-load efficiency and a no-load current as low as 3.5 mA at 2 MHz. The A8583 control circuit conducts less than 3 μA in sleep mode.

Protection features include VIN Undervoltage Lockout (UVLO), Pulse-by-Pulse Overcurrent Protection (OCP), Hiccup Mode Short Circuit Protection (HIC), Overvoltage Protection (OVP), and Overtemperature Shutdown (TSD). In addition, the A8583 offers one-of-a-kind secondary tube (D1) missing protection, open and adjacent pin short-circuit protection, and ground short-circuit protection for each pin to meet the most demanding applications.

The A8583 is available in a 16-pin TSSOP package with an exposed heatsink for enhanced thermal functionality. It is packaged as a lead-free product and features a 100% matte tin plated pin frame.

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• GPS/资讯娱乐系统
• 汽车音频
• 家庭音频
• 网络和电信
• • 较宽的工作电压范围：4.7 至 36 V
  • UVLO 停止阈值为 3.8 V（典型）
  • 支持 40 V 输入，以进行电涌和甩负荷测试
  • 能够提供至少 3.5 A 稳态输出电流
  • 可调输出电压低至 0.8V
  • 内部 70 mΩ 高端开关 MOSFET
  • 可调开关频率，fSW：0.25 至 2.4 MHz
  • 同步到外部时钟：1.2 × fSW 到 1.5 × fSW
  • 睡眠模式的供给电流低于 3 µA
  • 通过 SS 针脚从外部设置软启动时间
  • 极低的空载电流，典型值为 3.5 mA
  • 兼容预偏置启动
  • 电源工作正常 (POK) 输出
  • 逐脉冲电流限制 (OCP)
  • 打嗝模式短路保护 (HIC)
  • 过温保护 (TSD)
  • 过压保护 (OVP)
  • 异步二极管 (D1) 缺失保护
  • 开路和相邻针脚短路耐受
  • 每个针脚的接地短路耐受
  • 外部可调补偿
  • 兼容陶瓷输出电容器