CXSD6269空载供电电流为22_A，停机时降至<1_A。脉冲宽度调制（pulse width modulation）操作为噪声敏感应用提供非常低的输出纹波电压。100%的占空比能力提供低辍学操作，延长电池寿命在便携式系统
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目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
The CXSD6269 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The 2.7V to 5.5V input voltage range makes the CXSD6269 ideally suited for single Li-Ion battery-powered applications. Supply current with no load is 22ȝA, dropping to<1ȝA in shut-down. PWM (Pulse Width Modulation) operation provides very low output ripple voltage for noise sensitive applications. 100% duty cycle capability provides low dropout operation, extending battery life in portable systems.
The switching frequency is internally set at 1.5MHz, allowing the use of tiny surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage. The CXSD6269 is available in SOT23 package. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode.
二.产品特点
Ƶ 600mA Output Current
Ƶ High Efficiency: Up to 95%
Ƶ Tiny 5-Pin SOT23 Package
Ƶ 1.5MHz Constant Frequency Operation
Ƶ 2.7V to 5.5V Input Voltage Range
Ƶ Low Dropout Operation: 100% Duty Cycle
Ƶ Low Quiescent Current: Only 22ȝA During Operation
Ƶ Shutdown Mode Draws < 1ȝA Supply Current
Ƶ No Schottky Diode Required
Ƶ 0.6V Reference Allows Low Output Voltages
Ƶ Overtemperature Protected
Ƶ Adjustable Output Voltage.
Ƶ Current Mode Operation for Excellent Line and Load Transient Response
三.应用范围
Ƶ Cellular Telephones
Ƶ Personal Information Appliances
Ƶ Wireless and DSL Modems
Ƶ Digital Still Cameras
Ƶ MP3 Players
Ƶ Portable Instruments
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南 更多同类产品......
| 降压型开关稳压器 | |||||||||||
| Product | VIN | VOUT | IOUT | IQ | Freq. | VFB | Efficiency | PD(@TA = 25¡ãC) | Package | ||
| Min | Max | Min | Max | Max | Typ | Typ | Typ | Max | Max | ||
| (V) | (V) | (mA) | (uA) | (KHz) | (V) | % | (W) | ||||
| CXSD6271 | 2.7 | 5.5 | 1 | 4 | 2000 | 80 | 1000 | 0.6 | 96% | 0.5 | SOT-23-5L |
| CXSD6272 | 3 | 5.5 | 1 | 4 | 2000 | 80 | 1000 | 0.6 | 96 | 0.5 | SOT-23-5L |
| CXSD6270 | 2.7 | 5.5 | 1 | 4 | 1200 | 65 | 1500 | 0.6 | 92 | 0.5 | SOT-23-5L |
| CXSD6269 | 2.7 | 5.5 | 1 | 4 | 600 | 22 | 1500 | 0.6 | 95 | 0.5 | SOT-23-5L |
