LM2766M6 National Semiconductor, LM2766M6 Datasheet

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LM2766M6

Manufacturer Part Number
LM2766M6
Description
IC,DC/DC CONVERTER,+3.6 TO +11V,CMOS,TSOP,6PIN
Manufacturer
National Semiconductor
Datasheet

Specifications of LM2766M6

Rohs Compliant
NO

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© 2004 National Semiconductor Corporation
LM2766
Switched Capacitor Voltage Converter
General Description
The LM2766 CMOS charge-pump voltage converter oper-
ates as a voltage doubler for an input voltage in the range of
+1.8V to +5.5V. Two low cost capacitors and a diode are
used in this circuit to provide up to 20 mA of output current.
The LM2766 operates at 200 kHz switching frequency to
reduce output resistance and voltage ripple. With an operat-
ing current of only 350 µA (operating efficiency greater than
90% with most loads) and 0.1µA typical shutdown current,
the LM2766 provides ideal performance for battery powered
systems. The device is manufactured in a SOT-23-6 pack-
age.
Basic Application Circuits
Connection Diagram
6-Lead SOT (M6)
DS101282
Top View With Package Marking
Voltage Doubler
Actual Size
10128222
Features
n Doubles Input Supply Voltage
n SOT23-6 Package
n 20Ω Typical Output Impedance
n 90% Typical Conversion Efficiency at 20 mA
n 0.1µA Typical Shutdown Current
Applications
n Cellular Phones
n Pagers
n PDAs
n Operational Amplifier Power Supplies
n Interface Power Supplies
n Handheld Instruments
10128213
10128201
www.national.com
March 2000

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LM2766M6 Summary of contents

Page 1

... LM2766 provides ideal performance for battery powered systems. The device is manufactured in a SOT-23-6 pack- age. Basic Application Circuits Connection Diagram 6-Lead SOT (M6) © 2004 National Semiconductor Corporation Features n Doubles Input Supply Voltage n SOT23-6 Package n 20Ω Typical Output Impedance n 90% Typical Conversion Efficiency 0.1µ ...

Page 2

... Ordering Information Order Number Package Number LM2766M6 MA06A LM2766M6X MA06A 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. Pin Description Pin ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V+ to GND (GND − 0.3V Continuous Output Current OUT Output Short-Circuit Duration to GND (Note 3) Continuous Power Dissipation (T = 25˚C)(Note 4) ...

Page 4

Test Circuit Typical Performance Characteristics specified) Supply Current vs Supply Voltage Output Resistance vs Supply Voltage www.national.com FIGURE 1. LM2766 Test Circuit (Circuit of Figure Output Resistance vs 10128204 Output Resistance vs 10128206 4 10128203 = 5V, ...

Page 5

Typical Performance Characteristics specified) (Continued) Output Voltage vs Load Current Switching Frequency vs Supply Voltage Output Ripple vs Load Current (Circuit of Figure 10128208 Switching Frequency vs 10128210 10128212 25˚C unless otherwise ...

Page 6

Circuit Description The LM2766 contains four large CMOS switches which are switched in a sequence to double the input supply voltage. Energy transfer and storage are provided by external capaci- tors. Figure 2 illustrates the voltage conversion scheme. When S ...

Page 7

Application Information Manufacturer Phone Nichicon Corp. (847)-843-7500 AVX Corp. (843)-448-9411 Sprague (207)-324-4140 Sanyo (619)-661-6835 Murata (800)-831-9172 Taiyo Yuden (800)-348-2496 Tokin (408)-432-8020 Other Applications PARALLELING DEVICES Any number of LM2766s can be paralleled to reduce the output resistance. Each device must ...

Page 8

Other Applications (Continued) REGULATING V OUT It is possible to regulate the output of the LM2766 by use of a low dropout regulator (such as LP2980-5.0). The whole converter is depicted in Figure 5. A different output voltage is possible ...

Page 9

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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