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LM2664

ACTIVE

1.8-V to 5.5-VIN switched capacitor voltage inverter

Product details

Vin (min) (V) 1.8 Vin (max) (V) 5.5 Vout (min) (V) -5.5 Vout (max) (V) -1.8 Iout (max) (A) 0.04 Regulated outputs (#) 1 Switching frequency (min) (kHz) 40 Switching frequency (max) (kHz) 80 Iq (typ) (mA) 0.22 Features Enable Operating temperature range (°C) -40 to 85 Rating Catalog Type Charge pump
Vin (min) (V) 1.8 Vin (max) (V) 5.5 Vout (min) (V) -5.5 Vout (max) (V) -1.8 Iout (max) (A) 0.04 Regulated outputs (#) 1 Switching frequency (min) (kHz) 40 Switching frequency (max) (kHz) 80 Iq (typ) (mA) 0.22 Features Enable Operating temperature range (°C) -40 to 85 Rating Catalog Type Charge pump
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Inverts Input Supply Voltage
  • 6-Pin SOT-23 Package
  • 12-Ω Typical Output Impedance
  • 91% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current
  • Inverts Input Supply Voltage
  • 6-Pin SOT-23 Package
  • 12-Ω Typical Output Impedance
  • 91% Typical Conversion Efficiency at 40 mA
  • 1-µA Typical Shutdown Current

The LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.8 V to 5.5 V to the corresponding negative voltage of −1.8 V to −5.5 V. The device 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 LM2664 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.8 V to 5.5 V to the corresponding negative voltage of −1.8 V to −5.5 V. The device 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.

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Technical documentation

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* Data sheet LM2664 Switched Capacitor Voltage Converter datasheet (Rev. E) PDF | HTML 17 Dec 2014
EVM User's guide AN-1142 LM2661/3/4 Evaluation Board (Rev. C) 30 Apr 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM2661-3-4EVAL — Switched Capacitor Voltage Converter

The LM2661, LM2663, and LM2664 are part of a family of CMOS charge-pump voltage converters (Table 2). Each uses two small capacitors to achieve voltage inversion or voltage doubling without the cost, size, and EMI of inductor based converters. Each device has a shutdown feature and the LM2661 and (...)

User guide: PDF
Not available on TI.com
Simulation model

LM2664 PSPICE Model

SNVMBY1.ZIP (47 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Reference designs

PMP15038 — 50A, 0.05% Current Accuracy Power Reference Design for Battery Test Systems

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Test report: PDF
Schematic: PDF
Reference designs

PMP15043 — 6A, 0.05% Current Accuracy Power Solution for Battery Test Systems Reference Design

This reference design circuit introduces a highly accurate, bi-directional current power solution used in battery test systems (BTS). The maximum current capability is 6A with lower than 0.05% full scale accuracy. Controlling through a logic pin, the circuit can be used to charge or discharge a (...)
Test report: PDF
Schematic: PDF
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TIDA-01040 — Battery Tester Reference Design for High Current Applications

Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range.  This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) (...)
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Schematic: PDF
Reference designs

TIDA-01041 — Battery tester reference design for multi-phase high-precision 0.5 to 100 A battery formation

This reference design provides a multi-phase solution for a wide range of current battery test applications. Leveraging the dual phase buck/boost controller LM5170's daisy chain configuration gives the design the ability to achieve 100A charging/discharging rates. Utilizing high accuracy constant (...)
Design guide: PDF
Schematic: PDF
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TIDA-01042 — Modular battery tester reference design for 50-A, 100-A, and 200-A applications

This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be (...)
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TIDA-010087 — 100-A Dual-phase digital control battery tester reference design

This reference design illustrates a method to precisely control the current and voltage of a bidirectional interleaved buck-converter power stage using a C2000™ microcontroller (MCU) and a precision ADC ADS131M08. This design achieves less than ±20-mA current regulation error, and (...)
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Schematic: PDF
Package Pins Download
SOT-23 (DBV) 6 View options

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