深圳市中立信电子科技有限公司

MAX1615EUK+T

High-Voltage, Low-Power Linear Regulators  for Notebook Computers

线性稳压器 Linear Regulator for Notebooks

Features MAX1615EUK+T

♦ 4V to 28V Input Range

♦ 8μA (max) Quiescent Supply Current

♦ <1μA Shutdown Supply Current

♦ 3.3V or 5V, Pin-Selectable Output (MAX1615)

Adjustable 1.24V to 28V Output (MAX1616)

♦ 30mA Output Current

♦ ±2% Initial Output Accuracy

♦ Thermal-Overload Protection

♦ 5-Pin SOT23 Package

♦ Low Cost

Applications MAX1615EUK+T

CMOS/RTC Backup Power

Microcontroller Power

Notebook Computers

Smart-Battery Packs

PDAs and Handy-Terminals

Battery-Powered Systems

General Description MAX1615EUK+T

The MAX1615/MAX1616 are micropower, SOT23-5 linear regulators that supply always-on, keep-alive power to CMOS RAM and microcontrollers (μCs) in systems with high-voltage batteries. Key features include wide input voltage range, low dropout voltage, and low quiescent supply current.

Despite a miserly 8μA (max) no-load supply current, the  MAX1615/MAX1616 have excellent line-transient  response and AC power-supply rejection ratio. They  provide a clean, fixed 5V or 3.3V output (MAX1615) or  an adjustable 1.24V to 28V output (MAX1616), even  when subjected to fast supply-voltage changes that  occur during the switchover from battery to AC adapter  input power. The space-saving SOT23-5 package has  excellent thermal characteristics and tolerates up to  571mW of power dissipation. Fault protection is provided  by internal foldback current limiting and thermalshutdown  circuitry. The MAX1615/MAX1616 are now  available in lead-free packages.