特点
Plug-In Compatible with 7660 with These Additional Features:
Guaranteed
Operation to 9V, with No External Diode, Over Full Temperature Range
Boost Pin (Pin 1) for Higher Switching Frequency
Lower Quiescent Power
Efficient Voltage Doubler
200μA
Max.
No Load Supply Current at 5V
97%
Min.
Open Circuit Voltage Conversion Efficiency
95%
Min.
Power Conversion Efficiency
Wide Operating Supply Voltage Range, 1.5V to 9V
Easy to Use
Commercial Device
Guaranteed
Over -40°C to 85°C Temperature Range
典型应用
典型应用
描述
The H (Metal Can), J (Ceramic), and K (Metal Can) Packages From Linear Technology Are Now Obsolete
The LTC1044 provides several voltage conversion functions: the input voltage can be inverted (V OUT =-V IN ), doubled (V OUT =2 V IN ), divided (V OUT =V IN /2) or multiplied (V OUT =±nV IN ). Designed to be pin-for-pin and functionally compatible with the popular 7660, the LTC1044 provides significant features and improvements over earlier 7660 designs. These improvements include: full 1.5V to 9V supply operation over the entire operating temperature range, without the need for external protection diodes; 21/2 times lower quiescent current for greater power conversion efficiency; and a "boost" function which is available to raise the internal oscillator frequency to optimize performance in specific applications. Although the LTC1044 provides significant design and performance advantages over the earlier 7660 device, it still maintains its compatibility with existing 7660 designs.