APS2415TBER-ADJ

Chipown
Chipown APS2415 1.2MHz, 1.5A Synchronous Step-Down Converter General Description Features The APS2415 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages, such as 1.2V, 1.5V, 1.8V, etc. Supply current with no load is 300uA and drops to <1uA in shutdown....
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Технические характеристики

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Корпус SOT235
Тип преобразователя
Режим преобразования
Входное напряжение
Выходное напряжение
Максимальный выходной ток
Кол-во выходов
Частота преобразования
Ток собственного потребления
Максимальная скважность преобразования
Встроенные возможности
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Chipown APS2415 1.2MHz, 1.5A Synchronous Step-Down Converter General Description Features The APS2415 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages, such as 1.2V, 1.5V, 1.8V, etc. Supply current with no load is 300uA and drops to <1uA in shutdown. The 2.5V to 6.5V input voltage range makes the APS2415 ideally suited for single Li-Ion, two to four AA battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The APS2415 is available in a small SOT package. z z z z High Efficiency: Up to 96% 1.2MHz Constant Switching Frequency 1.5A Output Current at VIN=3V Integrated Main switch and synchronous rectifier. No Schottky Diode Required 2.5V to 6.5V Input Voltage Range Output Voltage as Low as 0.6V 100% Duty Cycle in Dropout Quiescent Current: 300µA(input < 4.2V) Slope Compensated Current Mode Control for Excellent Line and Load Transient Response Short Circuit Protection <1uA Shutdown Current Soft start Space Saving 5-Pin SOT23 package z z z z z z z z z Package SOT23-5L Applications z z z z z z z Cellular and Smart Phones Microprocessors and DSP Core Supplies Wireless and DSL Modems PDAs MP3 / MP4 /PMP Player Digital Still and Video Cameras Portable Instruments Typical Application Circuit η vs Io(Vo=1.8V) 100 95 90 η(%) 85 80 75 70 Vin=2.5V Vin=3.6V Vin=4.2V Vin=5V Vin=6V 65 60 55 50 0 300 600 900 1200 1500 Io(mA) Figure 1. Basic Application Circuit with Figure 2. Typical Efficiency Curve APS2415 adjustable version 8/F, ChuangYuan Building No.21-1 Changjiang Road, Wuxi New Destrict Tel: +86(510)8521-7718 http://www.chipown.com.cn V0.0 1/8 PDF
Документация на серию APS2415 

Дата модификации: 11.01.2023

Размер: 540.7 Кб

8 стр.

Chipown APS2415 1.5MHz，1.5A 同步降压稳压器 概述 特性 APS2415 是一款高效率，1.5MHz 固定工作频率， 电流模式架构的单片同步降压稳压器。该芯片有可 调版本和固定输出版本，稳压器在无负载时的工作 电流为 300uA；当处于关断时，工作电流降到 1uA 以下。输入工作电压范围为 2.5V 至 6.5V，使 APS2415 非常适合于单节锂离子电池或两至四节 干电池供电的电子产品。APS2415 采用 100%占空 比的方式，实现了低压差工作，延长了便携式设备 的电池寿命。在输出负载变低时，APS2415 工作于 脉冲跳跃模式，保证了低输出纹波电压，有利于对 噪声敏感的应用。1.5MHz 的开关频率，允许使用 较小的表面贴装电感电容。内置同步整流开关可提 高效率，且无需外接肖特基二极管。反馈端电压设 置为 0.6V，可使输出电压低至 0.6V。APS2415 适 用于较小的 SOT 封装。 z z z z z z z z z z z z z 高效率：高达 96% 1.5MHz 恒定开关频率 1.5A输出电流（VIN =3.6V & Vout=1.8V） 内置功率开关管及同步整流开关， 无需外部肖特基二极管 2.5V 至 6.5V 输入电压范围 输出电压可低至 0.6V 允许低压差操作：占空比可达 100% 低静态工作电流：300μA（VIN ＜4.2V） 电流模式实现优异的线性和负载瞬态响应 短路保护和过温保护 待机电流小于 1uA 软启动 节约空间的 5 引脚 SOT23 封装 封装 应用 z z z z z z z SOT23-5L 手机和智能电话 微处理器和 DSP 内核供电 无线和 DSL 调制解调器 掌上电脑 各种媒体播放器 数码相机和摄像机 各种手持设备 典型应用电路 典型效率曲线 η vs Io(Vo=1.8V) 100 95 90 η(%) 85 80 75 70 Vin=2.5V Vin=3.6V Vin=4.2V Vin=5V Vin=6V 65 60 55 50 0 300 600 900 1200 1500 Io(mA) 图1 典型应用电路 中国·无锡新区 长江路 21-1 号 创源大厦 8 楼 电话：+86(510)85217718 图2 典型效率曲线 网址：http://www.chipown.com.cn V2.0 1/8 PDF
Документация на APS2415TBER-ADJ 

CHIPOWN

Дата модификации: 05.12.2012

Размер: 447.3 Кб

8 стр.

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