AAT1217中文资料600mA, 1.2MHz, Micropower Synchronous Step-Up Converter数据手册Skyworks规格书

描述 Description

The AAT1217 a high efficiency, synchronous, fixed frequency, step-up converter designed for single-cell or dual-cell alkaline, NiMH, or NiCd battery-powered applications. The high 1.2MHz switching frequency and completely integrated control circuitry minimize the total solution footprint area while maintaining excellent regulation, ripple, and transient response throughout the full load range.
Pulse skipping mode operation and low quiescent current allow the AAT1217 to maintain high efficiency performance for light load and sleep mode conditions. With a 1.2A peak switch current limit, the AAT1217 is capable of delivering 100mA to the load from a single AA cell or up to 400mA from dual AA cells.
The AAT1217 has a 0.85V start-up voltage with operation down to 0.5V. The AAT1217 is available in a Pb-free, space-saving low profile (1mm) 6-pin TSOT23 package and is rated over the -40°C to +85°C ambient temperature range.

特性 Features

·VOUT Range: 2.5V to 5.5V
·100mA Output from a Single AA Cell Input
·400mA Output from a Dual AA Cell Input
·High Efficiency: Up to 93% Efficiency
·Low Start-Up Voltage: 0.85V Typical
·Internal Synchronous Rectifier
·VOUT ≤ 4.5V: No External Schottky Diode
·Fixed Frequency Pulse Width Modulation (PWM)Current-Mode Control Scheme with Internal Compensation
·1.2MHz Fixed Switching Frequency
·1.2A Current Limit
·Light Load Pulse Skipping Mode Operation
·Low 80µA No Load Input Current
·Over-Current Protection
·EMI Reduction Anti-Ringing Control Circuitry
·Low Shutdown Current: <1.0µA
·-40°C to +85°C Ambient Temperature Range
·Low Profile (1mm) TSOT23-6 Package

简介

AAT1217属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的AAT1217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。