National Semiconductor LM2766 Data Sheet
Summary
This CMOS charge-pump voltage converter serves as an efficient voltage doubler for power systems operating between 1.8V and 5.5V. Designed for demanding, battery-powered applications—including cellular phones, PDAs, and handheld instruments—it delivers stable output up to 20mA with high efficiency (>90%) and ultra-low sleep current. This manual provides comprehensive details on the LM2766, covering electrical characteristics, usage guidelines, pin functionality (V+, GND, OUT), maximum ratings, and suitability for both operational and interface power supplies.
Page 1 Text Content
查询LM2766M6供应商
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LM itched apacitor Voltage onverter
LM2766 Switched Capacitor Voltage Converter General Description Features
The LM2766 CMOS charge-pump voltage converter oper- Doubles Input Supply Voltage
ates as voltage doubler for an input voltage in the range of SOT23-6 Package +1.8V to +5.5V. Two low cost capacitors and diode are 20Ω Typical Output Impedance used in this circuit to provide up to m A of output current.
90% Typical Conversion Efficiency at m A
The LM2766 operates at k Hz switching frequency to re- 0.1µA Typical Shutdown Current duce output resistance and voltage ripple. With an operating current of only µA (operating efficiency greater than 90%
Applications
with most loads) and 0.1µA typical shutdown current, the
Cellular Phones
LM2766 provides ideal performance for battery powered
Pagers
systems. The device is manufactured in SOT-23-6 pack-
age. PDAs Operational Amplifier Power Supplies Interface Power Supplies Handheld Instruments
Basic Application Circuits
Voltage Doubler
DS101282-1
Connection Diagram
6-Lead SOT (M6)
DS101282-22
Actual Size
DS101282-13
View With Package Marking
Ordering Information Order Number Package Package Supplied as
Number Marking
LM2766M6 MA06A S16B (Note 1) Tape and Reel (1000 units/reel) LM2766M6X MA06A S16B (Note 1) Tape and Reel (3000 units/reel)
Note 1: The small physical size of the SOT-23 package does not allow for the full part number marking. Devices will be marked with the designation shown in the column Package Marking.
National Semiconductor Corporation DS101282 www.national.com
Page Summary Contents For National Semiconductor LM2766 Data Sheet
Manual Details
| Brand | National |
|---|---|
| Pages | 9 |
| File Size | 210.51 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the LM2766's core function and input voltage range?
It operates as a CMOS charge-pump voltage converter, acting as a voltage doubler for an input range between +1.8V and +5.5V.
What are the specific pin connections needed to operate it?
Connect V+ to pin 1 and GND to pin 2. Connect the negative capacitor terminal (CAP−) to pin 3, and use pin 5 for the positive voltage output (OUT).
How does its low-power consumption affect battery life?
It provides ideal performance for battery-powered devices, featuring a typical shutdown current of only 0.1 μA.
What is the estimated efficiency when supplying a continuous 20 mA load?
The typical voltage conversion efficiency (EFFL) at 20 mA is specified as 94%.