ADI公司的ADP1607是一款高效、同步、固定頻率、升壓型DC/DC轉換器，主要應用于便攜設備，輸出電壓可調范圍為1.8V至3.3V。該芯片具有2Mhz的固定輸出頻率、小封裝、同步矯正、內部補償、內部限流、輸出隔離、熱關斷、優秀的瞬態響應和外圍器件少等特點。本文通過總結ADP1607器件的特點，介紹器件、特性、應用方向及內部結構框圖，并給參考設計實例主要特性、原理圖、制板圖及元器件清單。

The ADP1607 is a high efficiency, synchronous, fixed frequency, step-up dc-to-dc switching converter with an adjustable output voltage between 1.8 V and 3.3 V for use in portable applications.

The 2 MHz operating frequency enables the use of small footprint, low profile external components. Additionally, the synchronous rectification, internal compensation, internal fixed current limit, and current mode architecture allow for excellent transient response and a minimal external part count.

Other key features include fixed PWM and light load PFM mode options, true output isolation, thermal shutdown (TSD), and logic controlled enable. Available in a lead-free, thin, 6-lead LFCSP package, the ADP1607 is ideal for providing efficient power conversion in portable devices.

ADP1607主要特性：

Up to 96% efficiency
0.8 V to VOUT input voltage range
Low 0.9 V input start-up voltage
1.8 V to 3.3 V output voltage range
23 μA quiescent current
Fixed PWM and light load PFM mode options
Synchronous rectification
True shutdown output Isolation
Internal soft start, compensation, and current limit
2 mm × 2 mm, 6-lead LFCSP
Compact solution size

ADP1607應用：

1-cell and 2-cell alkaline and NiMH/NiCd powered devices
Portable audio players, instruments, and medical devices
Solar cell applications
Miniature hard disk power supplies
Power LED status indicators



圖1. ADP1607方框圖

ADP1607參考設計主要特性：

0.8 V to VOUT input voltage range
Low 0.9 V input start-up voltage
Fixed 2 MHz PWM and light load PFM mode options
Auto PFM/PWM transition modes (ADP1607-EVALZ)
PWM mode only (ADP1607-001-EVALZ)
3.3 V output voltage
Jumper for enable/shutdown control
R1 and R2 selected for VOUT = 3.3 V output voltages

ADP1607設計原理圖：



圖2. ADP1607設計原理圖

ADP1607設計方案材料清單：



PCB元件布局圖：