Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover

General Description The MAX1774 is a complete power-supply solution for PDAs and other hand-held devices. It integrates two high-efficiency step-down converters, a boost converter for backup battery regulation, and four voltage detectors in a small 32-pin QFN or 28-pin QSOP package. Features ♦

双路、高效率、降压型转换器，带有备用电池切换开关

MAX1774是PDA和其他手持设备的完整电源解决方案。它在小型32引脚QFN或28引脚QSOP封装中集成了两个高效降压型转换器、一个用于备用电池调节的升压转换器以及四个电压检测器。\n\n MAX1774可接受+2.7V至+28V输入，并在超过2A的电流下提供1.25V至5.5V的可调主输出。副边核心转换器提供1V至5V的可调电压，并可提供高达1.5A的电流。主稳压器和核心稳压器都有独立的关断输入。\n\n 当交流适配器电源被移除时，外部P沟道MOSFET将输入切换到主电池。当主电池电量低时，备用升压型转换器维持主输出电压。当备用电池无法再提供所需负载时，系统会安全关断以 • 双通道、高效、同步整流降压型转换器\n\n• 薄型、小型（1mm高）QFN封装\n\n• 备用电池的升压型转换器\n\n• 主电源\n• 可调范围：+1.25V至+5.5V\n\n• 负载电流超过2A\n\n• 效率高达95%\n\n\n\n\n• 内核电源\n• 可调范围：1V至5V\n\n• 内部开关\n\n• 负载电流高达1.5A\n\n• 效率高达91%\n\n\n\n\n• 自动主电池切换\n\n• 占空比高达100%（最大值）\n\n• 开关频率高达1.25MHz\n\n• 输入电压范围：+2.7V至+28V\n\n• 四个低压检测器\n\n• 静态电流;

fully assembled and tested surface-mount circuit board Evaluation Kit

文件：181.69 Kbytes Page：6 Pages

Dual, High-Efficiency, Step-Down

文件：568.2 Kbytes Page：21 Pages

Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover

General Description The MAX1774 is a complete power-supply solution for PDAs and other hand-held devices. It integrates two high-efficiency step-down converters, a boost converter for backup battery regulation, and four voltage detectors in a small 32-pin QFN or 28-pin QSOP package. Features ♦

Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover

General Description The MAX1774 is a complete power-supply solution for PDAs and other hand-held devices. It integrates two high-efficiency step-down converters, a boost converter for backup battery regulation, and four voltage detectors in a small 32-pin QFN or 28-pin QSOP package. Features ♦

Dual, High-Efficiency, Step-Down

文件：568.2 Kbytes Page：21 Pages

Dual, High-Efficiency, Step-Down

文件：568.2 Kbytes Page：21 Pages

封装/外壳：28-SSOP（0.154"，3.90mm 宽） 功能：降压 包装：管件 描述：IC REG BCK ADJ 1.5A/2A DL 28QSOP 集成电路（IC） 稳压器 - DC-DC 开关稳压器

封装/外壳：28-SSOP（0.154"，3.90mm 宽） 功能：降压 包装：管件 描述：IC REG BCK ADJ 1.5A/2A DL 28QSOP 集成电路（IC） DC DC 开关稳压器

Dual, High-Efficiency, Step-Down

文件：568.2 Kbytes Page：21 Pages

fully assembled and tested surface-mount circuit board Evaluation Kit

文件：181.69 Kbytes Page：6 Pages

Integrated Circuit Dual, Bi-Directional Motor Driver

Description: The NTE1774 is a dual bidirectional motor driver. Since each channel has a 2–input logic circuit and performs bidirectional driving and braking functions, it is capable of direct driving motors of various types rated at 6V to 24V. The output voltage can be varied by the use of exte

SWITCHING DUAL P-CHANNEL POWER MOSFET

DESCRIPTION The µ PA1774 is Dual P-channel MOS Field Effect Transistor. FEATURES • Dual chip type • Low on-state resistance RDS(on)1 = 250 mΩ MAX. (VGS = –10 V, ID = –2.0 A) RDS(on)2 = 300 mΩ MAX. (VGS = –4.5 V, ID = –2.0 A) RDS(on)3 = 330 mΩ MAX. (VGS = –4.0 V, ID = –2.0 A) •