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Microchip Technology TC1044SEOA713
- Part No.:
- TC1044SEOA713
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TC1044SEOA713.pdf
- Description:
- IC REG CHARGE PUMP 20MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:15,607
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Product details
Overview
TC1044SEOA713 from Microchip Technology is a charge pump DC-DC voltage converter that inverts +1.5V to +12V input to –1.5V to –12V output using only two external capacitors. It delivers 99.9% voltage conversion efficiency, supports 10kHz/45kHz oscillator frequency selection via BOOST pin, and operates across –40°C to +85°C in 8-pin SOIC package for RS-232 negative power supply generation.
For engineers reviewing the TC1044SEOA713 datasheet, TC1044SEOA713 pinout, TC1044SEOA713 application, or TC1044SEOA713 equivalent, key selection criteria include input voltage range (1.5–12V), output source resistance (≤120Ω at 20mA), low quiescent current (80µA typ. at 5V), BOOST pin frequency control, and extended temperature operation without inductors.
Technical Context
The TC1044SEOA713 implements a four-switch MOS charge pump topology with logic-controlled substrate biasing to prevent latch-up across its full input range. Its internal oscillator operates at 10kHz nominally, scalable to 45kHz when BOOST pin is tied to V+, enabling smaller external capacitors.
It features dual-mode LV pin control: open for latch-up protection above 3.5V input, grounded for improved low-voltage operation below 3.5V. Output impedance is dominated by capacitive reactance of C1 at half-cycle switching frequency, yielding ~60Ω typical source resistance at 5V/20mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 12V - supports single-supply systems from low-power logic to industrial rails |
| Voltage Conversion Efficiency | 99.9% typ. - minimizes energy loss during inversion, critical for battery-powered instrumentation |
| Oscillator Frequency | 10kHz (BOOST open) or 45kHz (BOOST = V+) - enables trade-off between capacitor size and EMI |
| Supply Current | 80µA typ. at VIN = 5V - ultra-low quiescent draw preserves system standby power budget |
| Output Source Resistance | 60Ω typ. at 20mA - defines load regulation and voltage droop under dynamic current demand |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Package | 8-pin SOIC - surface-mount compatible with automated PCB assembly and thermal management |
Pinout & Package
TC1044SEOA713 is housed in an 8-pin Small Outline Integrated Circuit (SOIC) package with standard JEDEC MS-012AC dimensions (3.90mm × 4.90mm × 1.75mm), rated for 470mW power dissipation at TA ≤ 70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator frequency control input | Connect to V+ to raise FOSC from 10kHz to 45kHz; leave open or ground for nominal/low-frequency operation |
| 2 (CAP+) | Charge pump capacitor positive terminal | Drives external pump capacitor C1; polarity-sensitive with + terminal connected here |
| 3 (GND) | Ground reference | System return path for internal regulator, oscillator, and switch logic; must be low-impedance |
| 4 (CAP–) | Charge pump capacitor negative terminal | Completes C1 charging loop; connects to negative side of polarized electrolytic capacitor |
| 5 (VOUT) | Inverted output voltage node | Delivers –VIN; requires reservoir capacitor C2 to ground for ripple suppression |
| 6 (LV) | Low-voltage mode enable | Ground to disable internal regulator for <3.5V operation; leave open for >3.5V to prevent latch-up |
| 7 (OSC) | Oscillator timing node | Accepts external capacitor to ground for frequency reduction; may be driven by external clock via 1kΩ series resistor |
| 8 (V+) | Positive supply input | Primary power rail; absolute max rating +13V; must be applied before any other inputs to avoid latch-up |
Key Features
| Feature | Design Value |
|---|---|
| No inductor required | Enables compact, low-EMI DC-DC inversion using only two low-cost electrolytic capacitors |
| Frequency boost capability | 45kHz operation reduces required C1/C2 values by ~4.5× versus 10kHz, shrinking BOM footprint |
| Latch-up protection architecture | Active substrate bias control prevents destructive latch-up across full 1.5–12V input range |
| ESD robustness | 10kV HBM rating ensures reliability during handling and board-level integration |
| Wide temperature qualification | –40°C to +85°C operation validated per Microchip's industrial-grade screening flow |
Applications
| RS-232 Transceiver Power Supply | Portable Instrumentation Bias Rail |
|---|---|
Use Scenario: Generating –5V from a +5V microcontroller supply to meet RS-232 driver/receiver level requirements. IC Role / Device Role / Timing Role: Charge pump inverter providing isolated negative rail without magnetics or high-voltage DC-DC stages. Use Value: Eliminates need for transformer-based or switching-regulator solutions, reducing cost, size, and EMI in serial interface designs. | Use Scenario: Powering precision analog front-ends (e.g., ADC reference buffers) requiring clean ±5V rails from a single 5V battery source. IC Role / Device Role / Timing Role: Low-noise, high-efficiency voltage inverter delivering stable negative bias for op-amp and data converter circuits. Use Value: Achieves 99.9% conversion efficiency and 60Ω output impedance, minimizing voltage droop and thermal drift in measurement systems. |
| Industrial Sensor Signal Conditioning | Legacy Display Module Interface |
Use Scenario: Providing –12V bias for piezoelectric sensor amplifiers or –5V for legacy op-amp comparators in factory automation nodes. IC Role / Device Role / Timing Role: Robust inverting DC-DC converter operating continuously across –40°C to +85°C ambient. Use Value: Maintains ≤120Ω output resistance over full temperature range, ensuring consistent load regulation in unregulated industrial environments. | Use Scenario: Supplying –5V to older LCD or VFD display modules originally designed for dual-rail 9V battery operation. IC Role / Device Role / Timing Role: Drop-in replacement for TC7660 in legacy display power trees, leveraging pin compatibility and enhanced specs. Use Value: Delivers identical functionality with improved 12V input support and 10kV ESD protection, extending field life of aging equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TC7660CPA | Legacy predecessor; max input 10V, no BOOST pin, 8-pin DIP only, lower ESD rating (3kV) | Limited to commercial temp (0°C to +70°C); unsuitable for industrial ambient or 12V systems | Select only for legacy DIP board reuse where 10V max input suffices and SOIC is not feasible |
| MAX1044CPA | Same pinout; higher 15V abs max input; 100µA supply current; no LV pin control | Fixed internal regulator; cannot optimize for sub-3.5V operation like TC1044SEOA713 | Prefer when input exceeds 12V or when simplified LV handling is acceptable |
Compared with TC7660CPA and MAX1044CPA, TC1044SEOA713 uniquely combines extended –40°C to +85°C operation, BOOST-enabled frequency scaling, LV-selectable low-voltage mode, and 10kV ESD robustness in a space-efficient SOIC package-making it optimal for new industrial and portable designs requiring reliable, flexible inversion.
Availability
TC1044SEOA713 is available at Aetrix Electronics and suitable for RS-232 interface power supplies, portable instrumentation bias rails, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for TC1044SEOA713 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a leading provider of microcontrollers, analog devices, and connectivity solutions, headquartered in Chandler, Arizona.
The TC1044S product line was designed specifically for low-noise, inductorless voltage inversion in space-constrained and cost-sensitive applications such as communication interfaces and portable test equipment.
FAQ
What is the maximum input voltage supported by the TC1044SEOA713?
The TC1044SEOA713 supports a maximum continuous input voltage of +12V, with an absolute maximum rating of +13V. Exceeding +13V risks permanent damage. This 12V capability distinguishes it from earlier variants like the TC7660, which is limited to 10V, making TC1044SEOA713 suitable for wider industrial supply rails.
How does the BOOST pin affect TC1044SEOA713 performance?
When the BOOST pin of the TC1044SEOA713 is connected to V+, the internal oscillator frequency increases from 10kHz to 45kHz. This allows use of smaller external capacitors (e.g., 10µF instead of 47µF) while maintaining output ripple and regulation, reducing board area and BOM cost without sacrificing efficiency.
Can TC1044SEOA713 operate from a 3.3V supply?
Yes, the TC1044SEOA713 can operate from a 3.3V supply, but the LV pin must be grounded to disable the internal voltage regulator and ensure proper low-voltage switching. At 3.3V, typical output is –3.1V at light loads, with conversion efficiency remaining above 99% and supply current near 80µA.
What is the purpose of the LV pin on the TC1044SEOA713?
The LV pin on the TC1044SEOA713 controls internal regulator activation: grounding it disables the regulator for optimized operation below 3.5V input, while leaving it open enables latch-up protection for inputs above 3.5V. Incorrect LV connection (e.g., grounding at 5V) risks device failure due to substrate bias violation.
Is TC1044SEOA713 pin-compatible with TC7660-based designs?
Yes, TC1044SEOA713 is fully pin-compatible with the TC7660 in both SOIC and DIP packages. It upgrades functionality with 12V input support, BOOST pin, LV control, and 10kV ESD protection-requiring no PCB changes when replacing TC7660 in existing layouts, provided the BOOST and LV pins are appropriately terminated.
TC1044SEOA713 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- -Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 10kHz, 45kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TC1044SEOA713 FAQ
1.How can I place an order for TC1044SEOA713 through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1044SEOA713 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TC1044SEOA713 reliable?
The price and inventory of TC1044SEOA713 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1044SEOA713 is usually 5 days.
3.What payment methods are accepted for TC1044SEOA713?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1044SEOA713 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1044SEOA713?
TC1044SEOA713 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1044SEOA713 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TC1044SEOA713?
For technical support, including TC1044SEOA713 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1044SEOA713 requirements.
6.How does Aetrix verify that TC1044SEOA713 is sourced from the original manufacturer or authorized distributors?
All TC1044SEOA713 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TC1044SEOA713 meets industry standards.
7.What is the process for return or replacement of TC1044SEOA713?
All TC1044SEOA713 units undergo pre-shipment inspection (PSI). If there is an issue with TC1044SEOA713, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TC1044SEOA713 part is unused and in its original packaging.
Return procedure for TC1044SEOA713:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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