LM2664 - Switched Capacitor Voltage Converter

LM2664

Switched Capacitor Voltage Converter

Overview

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Reliability

Features

• Inverts Input Supply Voltage

• SOT23-6 Package

• 12 Typical Output Impedance

• 91% Typical Conversion Efficiency at 40 mA

• 1µA Typical Shutdown Current

Description
The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V to the corresponding negative voltage of -1.8V to -5.5V. The LM2664 uses two low cost capacitors to provide up to 40 mA of output current.

The LM2664 operates at 160 kHz oscillator frequency to reduce output resistance and voltage ripple. With an operating current of only 220 µA (operating efficiency greater than 91% with most loads) and 1 µA typical shutdown current, the LM2664 provides ideal performance for battery powered systems. The device is in SOT-23-6 package.

Applications

• Cellular Phones

• Pagers

• PDAs

• Operational Amplifier Power Suppliers

• Interface Power Suppliers

• Handheld Instruments

LM2664

1.80 <= V in Lower
V
<= V in Upper
V
<= 5.50

V out -5.50 <= V <= -1.80

I out A <= 0.04

Ambient Temperature °C <= 100

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LM2664

Typical Application *click for larger image

Connection Diagram *click for larger image

Typical Performance click for larger image

Parameters Values

Output Current 40 mA

Input Min Voltage 1.8 Volt

Input Max Voltage 5.8 Volt

Switching Frequency 160 kHz

On/Off Pin Yes

Efficiency (peak) 91 %

Error Flag No

Sync Pin No

Adj Switch Frequency No

Adjustable Output No

Inverting Yes

Step-Down No

Step-Up No

Multiple Output Capability No

RegType Switched Capacitor

Temperature Max 85 deg C

Temperature Min -40 deg C

Topology Charge Pump

Datasheet
Title Size Date Other
Language

LM2664 Switched Capacitor Voltage Converter 647
Kbytes 27-Sep-05 日本語

Featured Application Notes
Title Size Date Other
Language

AN-1142: Application Note 1142 LM2661/3/4 Evaluation Board 186
Kbytes 4-Oct-04

More Application Notes
Title Size Date Other
Language

AN-1367: Application Note 1367 LM5115 HV DC Evaluation Board 943
Kbytes 18-Oct-05 中文

Part Number(s)
(NSID)

Top View

Availability

Current Reported Stock

Budgetary Pricing

Standard Pack Size

LM2664M6/NOPB
LM2664M6

RoHS

SOT-23

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
ARROW	Worldwide	1626
AVNET-EM	Worldwide	3500
DIGIKEY	Worldwide	2301
FARNELL	Europe and Asia	4553
FUTURE	Worldwide	1100
NEWARK	Americas	1127
RS COMPONENTS	Worldwide	535

$0.39 each at 1K+ pcs

reel
of
1000

LM2664M6X/NOPB
LM2664M6X

RoHS

SOT-23

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
ARROW	Worldwide	3000
AVNET-EM	Worldwide	3000
DIGIKEY	Worldwide	0
FUTURE	Worldwide	1100

$0.39 each at 1K+ pcs

reel
of
3000

Part Number(s) (NSID)	Top View	Type	Pins	MSL Rating	Peak Reflow	RoHS	CAD Symbols	Models	Package Marking Format
LM2664M6/NOPB LM2664M6		SOT-23	6	1 1	260 260	RoHS	Download	N/A	S03A XTT
LM2664M6X/NOPB LM2664M6X		SOT-23	6	1 1	260 260	RoHS	Download	N/A	S03A XTT

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)

LM2664M6 ABCD150 0 34175 0 0 4234000 1 1201409060

LM2664M6X ABCD150 0 34175 0 0 4234000 1 1201409060

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

[Information as of 22-Nov-2009]