Part Number |
MAX8719 |
Manufacturers |
Maxim Integrated Products |
Logo |
|
Description |
(MAX8718 / MAX8719) High-Voltage / Low-Power Linear Regulators for Notebook Computers |
Datasheet |
MAX8719 Datasheet (PDF) |
19-3495; Rev 0; 11/04
High-Voltage, Low-Power Linear Regulators for Notebook Computers
General Description
The MAX8718/MAX8719 are micropower, 8-pin TDFN linear regulators that supply always-on, keep-alive power to CMOS RAM, real-time clocks (RTC), and microcontrollers in systems with high-voltage batteries. The circuits consist of a 100mA linear regulator and a power-good comparator (PGOOD) with fixed-output delay. Key features include wide input voltage range, low-dropout voltage, and low-quiescent supply current. Despite a miserly 25µA (max) no-load quiescent current, the MAX8718/MAX8719 have good line- and loadtransient response and excellent AC power-supply rejection. They provide a clean fixed 5V or 3.3V output (MAX8718), or an adjustable 1.24V to 28V output (MAX8719), even when subjected to fast supply-voltage changes that occur during the switchover from battery to AC-adapter input power. The space-saving TDFN package has excellent thermal characteristics and tolerates up to 1.