Features +5V regulated output Inverts V05(+5V) to VNEG(−5V) Doubles input supply voltage TSSOP-14 package 80% typical conversion efficiency at 25mA Input voltage range of 2.85V to 6.5V Independent shutdown control pins Description The LM2685 CMOS charge-pump voltage converter operates as an input voltage doubler, +5V regulator and inverter for an input voltage in the range of +2.85V to +6.5V. Five low cost capacitors are used in this circuit to provide up to 50mA of output current at +5V (± 5%), and 15mA at −5V. The LM2685 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 800µA (operating efficiency greater than 80% with most loads) and 6µA typical shutdown current, the LM2685 is ideal for use in battery powered systems. The device is in a small 14-pin TSSOP package. Applications Cellular phones Pagers PDAs Handheld instrumentation 3.3V to 5V voltage conversion applications

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LM2685 Dual Output Regulated Switched Capacitor Voltage Converter	326 Kbytes	22-Sep-11	日本語

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM2685MTC	LM3370	National Semiconductor	30 Nov 2009
LM2685MTCX	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009