MIC26603中文资料28V/6A DC-DC Buck Regulator w/Hyper Light Load™数据手册Microchip规格书

描述 Description

The MIC26603 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive on-time control architecture. The MIC26603 operates over a supply range of 4.5V to 28V. It has an internal linear regulator which provides a regulated 5V to power the internal control circuitry. MIC26603 operates at a constant 600kHz switching frequency in continuous-conduction mode and can be used to provide up to 6A of output current. The output voltage is adjustable down to 0.8V. HyperLight Load® architecture provides the same high-efficiency and ultra-fast transient response as the Hyper Speed Control™ architecture under medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable-frequency, discontinuous-mode operation.The MIC26603 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under voltage lockout to ensure proper operation under power-sag conditions, thermal shutdown, internal soft-start to reduce the inrush current, foldback current limit and \"hiccup\" mode short-circuit protection. The MIC26603 includes a Power Good (PG) output to allow simple sequencing.

特性 Features

• Hyper Speed Control™ architecture enables
• HyperLight Load® efficiency - up to 80% at 10mA
• Hyper Speed Control™ architecture enables
•High delta V operation (VIN = 28V and VOUT = 0.8V)
•Small output capacitance
• Input voltage range: 4.5V to 28V
• Output current up to 6A
• Up to 95% efficiency
• Adjustable output voltage from 0.8V to 5.5V
• ±1% FB accuracy
• Any CapacitorTM  stable - zero-to-high ESR
• 600kHz switching frequency
• Power Good (PG) output
• Foldback current-limit and \"hiccup\" mode short-circuit protection
• Safe start-up into pre-biased loads
• -40°C to +125°C junction temperature range

简介

MIC26603属于集成电路（IC）的DCDC开关稳压器。由制造生产的MIC26603稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。