GENERAL DESCRIPTION

The ADP5020 provides a highly integrated power solution that includes all of the power circuits necessary for a digital imaging module. It comprises two step-down dc-to-dc converters, one LDO, and a power sequence controller. All dc-to-dc converters integrate power pMOSFETs and nMOSFETs, making the system simpler and more compact and reducing the cost. The ADP5020 has digitally programmed output voltages and buck converters that can source up to 600 mA. A fixed frequency operation of 3 MHz enables the use of tiny inductors and capacitors. The buck converters use a voltage mode, constant-frequency PWM control scheme, and the synchronous rectification is implemented to reduce the power loss. The Buck 1 regulator operates at up to 93 efficiency.

FEATURES

Input voltage range: 2.4 V to 5.5 V

Low standby current: 1 μA

Switching frequency: 3 MHz

I2C interface

Synchronous Buck 1 regulator: 600 mA

Synchronous Buck 2 regulator: 250 mA

Low dropout regulator (LDO): 150 mA

Internal compensation

Internal soft start

Thermal shutdown

20-lead 4 mm × 4 mm LFCSP

APPLICATIONS

Digital cameras, handsets

Mobile TVs

ADP5020屬于開發(fā)板，套件，編程器 > 評估板 - DC/DC 與 AC/DC（離線）SMPS。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的ADP5020評估板 - DC/DC 與 AC/DC（離線）SMPS該系列產(chǎn)品提供了一種方便的方法，可對開關(guān)模式電源轉(zhuǎn)換所用的器件（包括 DC-DC 和 AC-DC 型）進(jìn)行性能或特性評估?！胺€(wěn)壓器”（包含內(nèi)部電源開關(guān)裝置）和“控制器”（設(shè)計(jì)為控制外部電源開關(guān)）之類的器件均包括在內(nèi)。