LM2797MM-1.8 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LM2797MM-1.8 is a switched-capacitor DC-DC voltage regulator providing a fixed 1.8 V output at up to 120 mA from a 2.6 V to 5.5 V input. It uses pulse-frequency modulation for efficient regulation without inductors, simplifying layout in compact designs. Housed in a 10-pin MSOP package suitable for portable and space-constrained power supply applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- OBSOLETE
- Datasheet
- LM2797MM-1.8 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Switched-capacitor topology with pulse-frequency modulation delivering 1.8 V at up to 120 mA without inductors, simplifying PCB layout
- 2.6 V to 5.5 V input range supporting operation from single-cell Li-ion, 2-cell alkaline, or 3.3 V/5 V logic rails
- 10-pin MSOP package enabling compact power conversion in portable, wearable, and space-constrained embedded designs
Applications
The LM2797MM-1.8 is designed for powering low-voltage logic, memory, and wireless modules in handheld instruments, portable consumer electronics, and battery-backed embedded systems that require a clean 1.8 V rail without the EMI and layout complexity of an inductive switcher. Its inductor-free switched-capacitor design is particularly advantageous in audio-sensitive or RF-adjacent circuits where magnetic field emissions must be minimized.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHED CAPACITOR REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE FREQUENCY MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.6V |
| Input Voltage-Nom | 3V |
| JESD-30 Code | S-PDSO-G10 |
| Number of Functions | 1 |
| Output Current-Max | 0.12A |
| Output Voltage-Max | 1.89V |
| Output Voltage-Min | 1.71V |
| Output Voltage-Nom | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 500kHz |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the inductor-free switched-capacitor design of the LM2797MM-1.8 simplify PCB layout compared to inductive buck converters?
The LM2797MM-1.8 eliminates the power inductor, freeing up to 20 mm2 of PCB area, removing the need to route high-current switching nodes that radiate EMI, and reducing the BOM by at least 1 large magnetic component, making layout and compliance testing significantly simpler for portable consumer and medical device designs.
What output current limitation should engineers consider when selecting the LM2797MM-1.8 for a microcontroller supply rail?
The LM2797MM-1.8 is limited to 120 mA maximum output, which comfortably covers the typical 20 mA to 80 mA active-mode current of most low-power microcontrollers and wireless SoCs operating at 1.8 V, but may be insufficient for designs that simultaneously power flash memory, display drivers, or multiple radio peripherals exceeding 100 mA combined.
Over what input voltage range can the LM2797MM-1.8 maintain its 1.8 V regulated output, and which battery chemistries does this range support?
The LM2797MM-1.8 regulates from inputs between 2.6 V and 5.5 V, covering single-cell Li-ion discharge from 4.2 V to 3.0 V, two-cell NiMH from 2.8 V to 2.4 V top end, and regulated 3.3 V or 5 V logic rails, providing broad battery chemistry compatibility without auxiliary boost circuitry for most portable product architectures.
What procurement strategy is recommended for the end-of-life LM2797MM-1.8 in high-volume production programs?
Because the LM2797MM-1.8 has a YTEOL rating of 0 indicating end-of-life status, procurement teams should secure a last-time-buy inventory covering at least 18 to 24 months of production demand, validate the date codes from authorized distributors, and simultaneously qualify a pin- and function-compatible switched-capacitor 1.8 V regulator as a second source to avoid supply disruption.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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