ADP1708: 1 A, Low Dropout, CMOS Linear Regulator

The ADP1706/ADP1707/ADP1708 are CMOS, low dropout linear regulators that operate from 2.5 V to 5.5 V and provide up to 1 A of output current. Using an advanced proprietary architecture, they provide high power supply rejection and achieve excellent line and load transient response with a small 4.7 μF ceramic output capacitor.

The ADP1706/ADP1707 are available in 16 fixed output volt-age options. The ADP1708 is available in an adjustable version, which allows output voltages that range from 0.8 V to 5.0 V via an external divider. The ADP1706 allows an external soft start capacitor to be connected to program the start-up time; the ADP1707 and ADP1708 contain internal soft start capacitors that give a typical start-up time of 100 μs. The ADP1707 includes a tracking feature that allows the output to follow an external voltage rail or reference.

The ADP1706/ADP1707/ADP1708 are available in an 8-lead, exposed paddle SOIC package and an 8-lead, 3 mm × 3 mm exposed paddle LFCSP, making them not only very compact solutions but also providing excellent thermal performance for applications requiring up to 1 A of output current in a small, low profile footprint.

产品应用领域 Applications

Notebook computers
Memory components
Telecommunications equipment
Network equipment
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems

ADP1708 特点

Maximum output current: 1 A
Input voltage range: 2.5 V to 5.5 V
Low shutdown current: <1 μA
Low dropout voltage: 345 mV @ 1 A load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2.5%
16 fixed output voltage options with soft start: 0.75 V to 3.3 V (ADP1706)
16 fixed output voltage options with tracking 0.75 V to 3.3 V (ADP1707)
Adjustable output voltage option: 0.8 V to 5.0 V (ADP1708)
Stable with small 4.7 μF ceramic output capacitor
Excellent load/line transient response
Current limit and thermal overload protection

ADP1708 功能框图

ADP1708 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
ADP1708-BL1-EVZ	量产	评估板	-	待定
ADP1708-EVALZ	量产	评估板	-	商业
ADP1708ACPZ-R7	量产	8 ld LFCSP (3x3mm)	8	工业
ADP1708ARDZ-R7	量产	8 ld SOIC-EP (2.41mm Exposed pad)	8	工业