LM2765M6 National Semiconductor, LM2765M6 Datasheet

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LM2765M6

Manufacturer Part Number
LM2765M6
Description
Manufacturer
National Semiconductor
Type
Step Upr
Datasheet

Specifications of LM2765M6

Operating Supply Voltage (min)
1.8V
Operating Supply Voltage (max)
5.5V
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Package Type
SOT-23
Pin Count
6
Mounting
Surface Mount
Output Voltage
3.6 to 11V
Output Current
20mA
Lead Free Status / RoHS Status
Not Compliant

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© 2004 National Semiconductor Corporation
LM2765
Switched Capacitor Voltage Converter
General Description
The LM2765 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 LM2765 operates at 50 kHz switching frequency to
reduce output resistance and voltage ripple. With an operat-
ing current of only 130 µA (operating efficiency greater than
90% with most loads) and 0.1µA typical shutdown current,
the LM2765 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)
Top View With Package Marking
10128113
DS101281
Voltage Doubler
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
Actual Size
10128101
10128122
www.national.com
March 2000

Related parts for LM2765M6

LM2765M6 Summary of contents

Page 1

... The device is manufactured in a SOT-23-6 pack- age. Basic Application Circuits Connection Diagram 6-Lead SOT (M6) 10128113 Top View With Package Marking © 2004 National Semiconductor Corporation Features n Doubles Input Supply Voltage n SOT23-6 Package n 20Ω Typical Output Impedance n 90% Typical Conversion Efficiency 0.1µA Typical Shutdown Current ...

Page 2

... Ordering Information Order Number Package Number LM2765M6 MA06A LM2765M6X 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. LM2765 Test Circuit (Circuit of Figure Output Resistance vs 10128104 Output Resistance vs 10128106 4 10128103 = 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 10128108 Switching Frequency vs 10128110 10128112 25˚C unless otherwise ...

Page 6

Circuit Description The LM2765 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 LM2765s 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 LM2765 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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