ADP2138ACBZ-1.2-R7

所属类别：降压DC / DC转换
产品名称：紧凑型、800 mA、3 MHz、降压DC-DC转换器
厂商：ADI
生产批号：14+
封装：WLCSP-6
库存状态：有库存
库存量：3230
最低订购量：1
详细资料：

Product Introduction

Product Details:

Both the ADP2138 and ADP2139 are high-efficiency, geoquicentric, synchronous step-down DC-DC converters. ADP2139 additionally added an internal discharge switch. The entire solution requires only three small external components. When the MODE pin is set to high, the buck regulator will operate in forced PWM mode, providing low peak-to-peak ripple for power supply noise-sensitive loads at the expense of light-load efficiency. When the MODE pin is set to low, the buck regulator automatically switches the operating mode based on the load current level. When the output load is high, the buck regulator operates in PWM mode. When the load current drops below a predefined threshold, the regulator operates in power saving mode (PSM) to improve light load efficiency.

The ADP2138/ADP2139 operates from a 2.3 V to 5.5 V input voltage and can be powered by a single lithium or lithium polymer battery, multiple alkaline or NiMH batteries, PCMCIA, USB, and other standard power supplies. A maximum load current of 800mA is achieved over the entire input voltage range.

The ADP2138/ADP2139 is available in 3.3 V, 3.0 V, 2.8 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, 1.0 V, and 0.8 V fixed output voltages. All models have built-in power switches and synchronous rectifiers to reduce the number of external components and increase efficiency. ADP2138/ADP2139 has a built-in soft-start function with an internal compensation mechanism. During logic-controlled shutdown, the input is disconnected from the output and ADP2138/ADP2139 draws 0.2 μA (typical) from the input source.

Other important features include undervoltage latching to prevent deep battery discharge and soft start to prevent overshoot of input current during start-up. ADP2138/ADP2139 in a 6-pin wafer-scale chip-scale package (WLCSP).

apply - PDAs and handheld computers - Wireless cell phones - Digital audio, portable media player - Digital camera, GPS navigation device

Advantages and features:

输入电压：2.3 V至5.5 V
峰值效率：95%
3 MHz 固定工作频率
典型静态电流：24 μA
极小尺寸解决方案
6引脚、1 mm × 1.5 mm WLCSP封装
快速加载和线路瞬态响应

占空比：100%（低压差模式）
内部同步整流器、补偿和软启动
电流过载和热关断保护功能
超低关断电流：0.2 μA（典型值）
强制PWM和自动PWM/PSM模式
ADIsimPower设计工具支持

//www.chip100.com/

The ICs associated with ADP2138ACBZ-1.2-R7 include:

Model	Manufacturers	lot number	encapsulation	illustrate
ADP2138ACBZ-3.3-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-3.0-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-2.8-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-2.5-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-1.8-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-1.5-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-1.2-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-1.0-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter
ADP2138ACBZ-0.8-R7	ADI	14+	WLCSP-6	Compact, 800 mA, 3 MHz, step-down DC-DC converter

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