TC1044SEOA Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip TC1044SEOA is a switched-capacitor voltage converter that inverts a positive supply to a negative output, delivering up to 20 mA with an oscillator frequency of 45 kHz. Operating from a 1.5 V to 12 V input, it suits portable and battery-powered designs requiring a negative rail in an SOIC-8 package.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TC1044SEOA Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9202(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Inverts positive input voltage to regulated negative output up to -12 V
- Delivers up to 20 mA output current for light-load negative-rail circuits
- Internal oscillator at 45 kHz with optional external frequency control
- Wide input voltage range from 1.5 V to 12 V covers battery and regulated supplies
- Space-efficient SOIC-8 package suitable for compact PCB layouts
Applications
The TC1044SEOA is widely used in portable instruments, handheld test equipment, and medical devices where a negative supply rail must be derived from a single positive battery. It also finds use in op-amp biasing circuits, LCD contrast control, and data-acquisition systems that require a small negative voltage from an existing 5 V or 3.3 V bus.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 15Weeks |
| YTEOL | 8 |
| Analog IC - Other Type | SWITCHED CAPACITOR REGULATOR |
| Input Voltage-Max | 12V |
| Input Voltage-Min | 1.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | -12 V |
| Output Voltage-Min | -1.5 V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.18mA |
| Surface Mount | YES |
| Switcher Configuration | DOUBLER INVERTER |
| Switching Frequency-Max | 45kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much output current can TC1044SEOA supply from a 5 V input when inverting to a negative rail?
TC1044SEOA can supply up to 20 mA of output current when operating from a 5 V input rail, making it suitable for light-load negative-supply circuits such as op-amp biasing, LCD contrast, and reference voltage generation in portable designs.
What is the typical oscillator frequency of TC1044SEOA and how does it affect output ripple?
The internal oscillator runs at 45 kHz, which sets the switching rate of the charge-pump capacitors. Higher frequency reduces the required external capacitor size and lowers output ripple, enabling compact filter sections with capacitors in the 10 µF range for most applications.
Is TC1044SEOA suitable for battery-powered designs operating down to 1.5 V input?
Yes. TC1044SEOA operates over a wide input voltage range from 1.5 V to 12 V, so it functions with a single alkaline or NiMH cell down to approximately 1.5 V. This makes it viable for low-power portable instruments across its full -40°C to 85°C temperature range.
What are the RoHS compliance and package details for TC1044SEOA when qualifying it for a lead-free BOM?
TC1044SEOA is supplied in an SOIC-8 package and carries a Pb-free (e3) JEDEC finish code, confirming lead-free solder compatibility. The RoHS-compliant construction makes it straightforward to include on a lead-free BOM without additional exemption tracking.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2540 | $1.25 |
| 2+ | $0.9202 | $1.84 |
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