描述 Description

The AAT2630 contains two fully integrated, step-down converters,eight low-dropout (LDO) regulators, a 1.25 V voltage reference, a19.2 MHz clock buffer, a 32 kHz frequency output, and three LEDdrivers in a 3 mm x 3 mm Wafer Level Chip Scale Package(WLCSP), making it ideal for wireless data cards or modules andon-board modems.
The two step-down converters are synchronous with internalcompensation. Switching at 1.92 MHz, they operate 180° out ofphase to minimize the number and size of the externalcomponents and to provide efficiencies higher than 90%.The eight LDOs are high PSRR type, requiring only a small outputceramic capacitor for stability.
Power-on reset and automatic power-up sequence, which arecommon in system architectures involving a processor, aredefined for the supplies. The AAT2630 also includes over-currentand over-temperature protection.
The AAT2630 is available in a 49-bump, 3 mm x 3 mm WLCSPpackage.

特性 Features

·VIN range: 3.0 V to 5.5 V
·Two 1.92 MHz synchronous step-down converters:·180° out-of-phase operation
·Buck1: 1.375 V, 500 mA output
·Buck2: 2.1 V, 500 mA output
·Light load, low noise switching mode

·Eight LDO regulators:·Two with 300 mA output:·LDO1 for MSME: 1.8 V
·LDO3 for MSMA: 2.6 V

·Three with 150 mA output:·LDO2 for MSMP: 2.6 V
·LDO4 for MMC: 3.0 V
·LDO8 for RFRX: 2.75 V

·Three with 50mA output:·LDO5 for RUIM: 1.8 V/3.0 V
·LDO6 for TCXO: 2.85 V
·LDO7 for USB: 3.1 V

·High PSRR (70 dB @1 KHz)

·Over-current and over-temperature protection
·Power-on reset
·Power up with defined sequence
·1.25 V voltage reference
·19.2 MHz clock buffer
·32.7645 kHz frequency output
·WLCSP (49-bump, 3 mm x 3 mm) package (MSL1, 260 oC per JEDEC J-STD-020)

簡(jiǎn)介

AAT2630屬于集成電路（IC）的電源管理-專(zhuān)用。由制造生產(chǎn)的AAT2630電源管理 - 專(zhuān)用專(zhuān)用型電源管理集成電路 (PMIC) 用于電源的控制或操作，適合特定或小范圍的目標(biāo)應(yīng)用，例如汽車(chē)氣囊管理、電容器組平衡、AC 公共電力監(jiān)控、存儲(chǔ)器總線端接、接地故障檢測(cè)、能量收集、小型引擎管理、處理器或芯片集專(zhuān)用電壓調(diào)節(jié)、負(fù)載突降保護(hù)、觸覺(jué)驅(qū)動(dòng)器、熱電制冷器控制等。