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ADI MAX1044CPA
Charge Pump Switching Regulator IC Positive or Negative Fixed -Vin, nVin, Vin/2 1 Output 20mA 8-DIP (0.300", 7.62mm)
Brands: Analog Devices, Inc
Mfr.Part #: MAX1044CPA
Datasheet: MAX1044CPA Datasheet (PDF)
Package/Case: TO-99-8
Product Type: Voltage Converter
RoHS Status:
Stock Condition: 2334 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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The MAX1044 is a voltage converter and inverter IC (integrated circuit) produced by Maxim Integrated (now part of Analog Devices, Inc.). It is designed to take a single positive voltage supply and generate dual supplies, including both positive and negative voltages. The MAX1044 is a monolithic, CMOS-based voltage converter. It can perform several voltage conversion functions, including inversion, doubling, dividing, or multiplying a positive input voltage. The MAX1044 is pin-compatible with industry-standard ICs such as the ICL7660 and LTC1044, making it a drop-in replacement for these devices. It operates reliably over an input voltage range from 1.5V to 10V. Unlike some voltage converters, the MAX1044 doesn't require an external diode for operation. It can deliver up to 10mA of output current with a minimal output voltage drop of 0.5V. The MAX1044 features a BOOST pin that can increase the oscillator frequency beyond the audio band, reducing the size requirements for external capacitors. It combines low quiescent current and high efficiency, making it suitable for battery-powered applications. The IC includes on-chip control circuitry for the oscillator and four power MOSFET switches.
MAX1044 Pinout
The MAX1044 is a switched-capacitor voltage converter that can be used to double an input voltage or invert it. It is commonly used in electronic circuits to generate a negative voltage supply from a positive voltage source.
GND (Pin 1): Ground connection. Connect this pin to the ground reference of your circuit.
CAP+ (Pin 2): Positive switched capacitor flying voltage. Connect an external capacitor from this pin to the V+ supply.
CAP- (Pin 3): Negative switched capacitor flying voltage. Connect an external capacitor from this pin to the V- supply.
V- (Pin 4): Negative voltage output. This pin provides the generated negative voltage.
V+ (Pin 5): Positive voltage input. Connect this pin to your positive voltage source.
OSC (Pin 6): Oscillator frequency setting. Connect a resistor from this pin to V- to set the oscillator frequency.
SHDN (Pin 7): Shutdown/enable control. Pull this pin low to shut down the device and reduce power consumption.
C1- (Pin 8): External capacitor connection for voltage doubling. Connect an external capacitor from this pin to the V- supply.
C1+ (Pin 9): External capacitor connection for voltage doubling. Connect an external capacitor from this pin to the V+ supply.
MAX1044 Charge Pump
Manufacturer
The MAX1044 is manufactured by Maxim Integrated, a well-known semiconductor company that specializes in analog and mixed-signal integrated circuits. Maxim Integrated, a subsidiary of Analog Devices, specializes in the creation, production, and distribution of analog and mixed-signal integrated circuits, catering to a wide array of industries such as automotive, industrial, communications, consumer electronics, and computing. Within its comprehensive product lineup, Maxim offers an extensive range of solutions, encompassing power and battery management ICs, sensors, analog ICs, interface ICs, cutting-edge communication solutions, digital ICs, embedded security technologies, and microcontrollers. Headquartered in the bustling tech hub of San Jose, California, Maxim boasts a global presence with design hubs, state-of-the-art manufacturing facilities, and a network of sales offices strategically positioned across the globe.
Specification
| Specification | Value |
| Input Voltage Range | 4.5V to 15V |
| Output Voltage Range | Typically -5V |
| Output Voltage Accuracy | ±5% |
| Quiescent Current | Typically 80μA |
| Dropout Voltage | Typically 0.5V |
| Output Current | Up to 20mA |
| Operating Temperature Range | -40°C to +85°C |
| Package Options | DIP, SOIC, SOT, TO-220 |
| Shutdown Current (Typical) | 0.01μA |
| Maximum Output Current (Pulsed) | 40mA |
| Reverse Supply Voltage | -0.3V to +6V |
| Output Voltage Ripple | Typically 1mVp-p |
Features
The MAX1044 is a versatile voltage converter and inverter IC known for its ability to generate dual power supplies from a single positive voltage source.
Miniature µMAX Package
The MAX1044 is available in a miniature µMAX package, which is a compact and space-efficient package option. This makes it suitable for applications where PCB real estate is limited.
Operating Supply Voltage Range
The MAX1044 can operate with an input voltage supply range from 1.5V to 10.0V. This wide range allows flexibility in choosing the input voltage source.
High Power-Conversion Efficiency
The MAX1044 is designed for high efficiency, with a typical power-conversion efficiency of 98%. This ensures that minimal power is wasted during the voltage conversion process, making it energy-efficient.
Voltage Conversion Capabilities
The MAX1044 can perform various voltage conversion functions, including inversion, doubling, dividing, or multiplying input voltages. This versatility allows it to adapt to different application requirements.
BOOST Pin (MAX1044)
In the MAX1044 variant, there is a BOOST pin that can be used to increase the switching frequencies of the IC. This feature can be beneficial in certain applications where adjusting the switching frequency is desired.
Low No-Load Supply Current
The MAX1044 is designed to minimize power consumption, even when there is no load connected. It has a low no-load supply current of 200µA (maximum) at 5V, making it suitable for battery-powered and low-power applications.
No External Diode Required
Unlike some voltage converters, the MAX1044 does not require an external diode for higher-voltage operation. This simplifies the external component count and reduces the overall complexity of the circuit.The MAX1044 is commonly used in applications such as:
Providing dual power supplies for operational amplifiers (op-amps).
Generating positive and negative voltage rails for analog signal processing circuits.
Powering audio amplifiers, where both positive and negative supply voltages are needed.
Mixed-signal circuits requiring dual voltage references for ADCs and DACs.
Portable and battery-powered devices where power efficiency is critical.
Signal conditioning circuits where amplification and signal inversion are required.
Overall, the MAX1044 is a versatile IC with a wide input voltage range, high efficiency, and various voltage conversion capabilities, making it valuable in a range of electronic designs, particularly those requiring bipolar power supplies. Its miniature package and low power consumption also enhance its suitability for space-constrained and low-power applications.
Absolute Maximum Ratings
| Absolute Maximum Ratings | Applications |
| Voltage on V+ or V- | -0.3V to +7V |
| Input Voltage (IN, SHDN, C2-) | -0.3V to (V+) + 0.3V |
| Voltage on N.C. Pin (MAX1044E) | -0.3V to +5.5V |
| Voltage on N.C. Pin (MAX1044) | -0.3V to +6V |
| Output Short-Circuit Duration | Indefinite |
|
Continuous Power Dissipation (TA = +70°C)
|
500mW (MAX1044), 800mW (MAX1044E) |
| Operating Temperature Range |
0°C to +70°C (MAX1044), -40°C to +85°C (MAX1044E)
|
| Storage Temperature Range | -65°C to +160°C |
MAX1044 vs TC1044SCPA
| Feature | MAX1044 | TC1044SCPA |
| Manufacturers | Maxim Integrated | Microchip Technology |
| Voltage Conversion | Capable of doubling or inverting input voltage | Capable of doubling or inverting input voltage |
| Pinout | Similar pinout with slight configuration differences | Similar pinout with slight configuration differences |
| Operating Voltage Range | Limited to around 10V | Wide operating voltage range, up to 15V |
| Output Current | Lower output current capability | Generally higher output current capability |
| Shutdown Control | Features SHDN pin for device shutdown | Features SHDN pin for device shutdown |
| Oscillator Frequency | Frequency setting may vary | Fixed oscillator frequency |
| Temperature Range | Operating range may be narrower | Wide temperature operating range |
MAX1044 vs ICL7660
| Feature | MAX1044 | ICL7660 |
| Manufacturers | Maxim Integrated | Intersil (now part of Renesas Electronics) |
| Voltage Conversion | Capable of doubling or inverting input voltage | Capable of doubling or inverting input voltage |
| Pinout | Similar pinout with slight configuration differences | Similar pinout with slight configuration differences |
| Operating Voltage Range | Limited to around 10V | Wide operating voltage range, up to 12V |
| Output Current | Lower output current capability | Generally higher output current capability |
| Shutdown Control | Features SHDN pin for device shutdown | Features SHDN pin for device shutdown |
| Oscillator Frequency | Frequency setting may vary | Fixed oscillator frequency |
| Temperature Range | Operating range may be narrower | Wide temperature operating range |
LT1054 vs MAX1044
Read More: LT1054 vs MAX1044
| Feature | LT1054 | MAX1044 |
| Manufacturers | Linear Technology (Analog Devices) | Maxim Integrated |
| Voltage Conversion | Capable of doubling or inverting input voltage | Capable of doubling or inverting input voltage |
| Pinout | Similar pinout with slight configuration differences | Similar pinout with slight configuration differences |
| Operating Voltage Range | Wider range, up to 15V | Limited to around 10V |
| Output Current | Generally higher output current capability | Lower output current capability |
| Shutdown Control | Features SHDN pin for device shutdown | Features SHDN pin for device shutdown |
| Oscillator Frequency | Frequency setting may vary | Frequency setting may vary |
| Temperature Range | Offers a wider temperature operating range | Operating range may be narrower |
MAX1044 Voltage Doubler Schematic
Application
-5V Supply from +5V Logic Supply: It is commonly used to generate a negative voltage supply (-5V) from a positive logic supply (+5V). This is valuable in circuits where both positive and negative supply voltages are required.
Personal Communications Equipment: The MAX1044 can be used in personal communication devices, such as cell phones and smartphones, to provide necessary voltage conversions or negative supply rails for various components.
Portable Telephones: Portable telephones and cordless phones often require multiple supply voltages for different components. The MAX1044 can help generate these voltages efficiently.
Op-Amp Power Supplies: It is used in applications where operational amplifiers (op-amps) require dual supply voltages (positive and negative) for proper operation.
EIA/TIA-232E and EIA/TIA-562 Power Supplies: The MAX1044 can be employed in RS-232 and RS-562 serial communication interfaces to generate required voltage levels.
Data-Acquisition Systems: Data acquisition systems often require precise voltage levels for analog signal conditioning and digitization. The MAX1044 can provide these voltages.
Hand-Held Instruments: Handheld electronic instruments like multimeters, oscilloscopes, and signal generators may use the MAX1044 for generating required supply voltages.
Panel Meters: Panel meters, used in various industrial and measurement applications, may utilize the MAX1044 to power the metering circuitry.
MAX1044 Equivalent/Alternative/Replacement
| Part Number | Manufacturer | Definition | Function |
| ICL7660 | Intersil (now Renesas) | Voltage converter and inverter IC that generates positive and negative voltages from a single positive supply. |
Voltage inversion and conversion. Widely used in various applications.
|
| TC1044 | Microchip Technology | Voltage converter and inverter IC capable of similar voltage conversion tasks. Available in various packages. |
Voltage inversion and conversion. A potential replacement for the MAX1044 in certain applications.
|
| LT1054 | Linear Technology (Analog Devices) | Versatile voltage converter and regulator IC that can produce both positive and negative output voltages. |
Voltage regulation and conversion. Similar applications to the MAX1044.
|
| MAX660 | Maxim Integrated | Voltage converter and inverter IC that can provide dual supplies from a single positive input voltage. |
Voltage inversion and conversion. Similar to the MAX1044.
|
Related Parts
| Part Number | Definition | Manufacturer | Application |
| MAX1044C/D+ | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044CPA+ | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044CSA+ | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044CSA+T | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044EPA+ | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044ESA+ | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044ESA+T | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044MJA | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
| MAX1044MJA/883B | Voltage Converter IC | Maxim Integrated | Voltage Doubling/Inverting |
Read more:
Please click here to know more information about MAX1044:
Pin Configurations
Pin Description
Operating Circuit
Electrical Characteristics
Operating Characteristics
Design Information
Application Circuits
Chip Topographies
Package Information
Documentation & Resources
Reliability Data
MAX1044 reliability data
Design Notes
High-frequency switching IC powers portable devices
PC Printer Port Control Data Logger
Technical Article
Integrated Charge Pump DC-DC Conversion Guide
MAX1044 Spice Model
https://support.analog.com/en-us/knowledgebase/article/KA-16919
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Part points
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The MAX1044 IC Voltage Converter chip is a voltage converter that converts a positive input voltage to a corresponding negative output voltage. it is commonly used in audio applications to generate a negative supply voltage from a positive one, enabling the use of single supply systems. the chip requires only two external capacitors, making it a cost-effective solution for inverting voltage requirements.
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Equivalent
Equivalent products to the MAX1044 IC Voltage Converter chip include icl7660, ltc1044, and cmos pump-up voltage converters like tc1044. these chips provide similar functions and capabilities for voltage conversion applications. -
Features
The MAX1044 IC Voltage Converter is a charge-pump voltage converter with features including a variable-input voltage range, low quiescent current, high output current capability, and the ability to operate in a low-voltage starved condition. it enables voltage doubling, inverting, and splitter applications while simplifying circuit designs and reducing component count. -
Pinout
The MAX1044 IC Voltage Converter is a voltage converter ic with 8 pins. its function is to convert a positive input voltage into a negative output voltage, typically used in applications that require a negative voltage source. -
Manufacturer
The manufacturer of the MAX1044 IC Voltage Converter is maxim integrated. it is a global semiconductor company that designs, develops, manufactures, and sells a range of analog and mixed-signal integrated circuits. maxim integrated provides solutions for various industries including automotive, consumer electronics, healthcare, industrial, and more. -
Application Field
The MAX1044 IC Voltage Converter is commonly used in applications such as voltage doublers, charge pumps, and voltage inverters. it can be used in audio applications, sensor circuits, and battery-powered systems requiring voltage conversion. it is also useful in low-power designs, where it offers high efficiency through its low quiescent current and low ripple output. -
Package
The MAX1044 IC Voltage Converter chip comes in an 8-pin pdip (plastic dual-in-line package) form factor. it has a size of approximately 10.16mm x 6.6mm x 4.83mm.
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