LTC1550LCMS8-2.5#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LTC1550LCMS8-2.5#PBF is a low-noise switched-capacitor voltage inverter from Analog Devices that generates a -2.5V output from a 2.7V–5.25V input with minimal external components. Available in MSOP-8 package with RoHS-compliant Pb-free construction, in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC1550LCMS8-2.5#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.1900(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Low-noise switched-capacitor topology inverts 2.7V–5.25V input to a regulated -2.5V output without magnetic inductors
- Fixed -2.5V output ideal for powering op-amp negative rails, LCD bias, and analog front-end circuits requiring a negative supply
- Compact MSOP-8 (CMS8) package occupies minimal PCB area for space-constrained portable and handheld designs
- 5V nominal input voltage compatibility integrates directly with standard single-supply 5V system rails
- Pb-free, RoHS-compliant construction satisfies environmental regulations for commercial and industrial end products
Applications
The LTC1550LCMS8-2.5#PBF is designed for systems that need a small, clean -2.5V negative supply rail derived from a single 5V source, such as op-amp bias circuits, LCD contrast voltage generators, and precision analog-to-digital converter references in portable instruments. Its inductor-free switched-capacitor architecture reduces EMI and simplifies board layout in handheld test equipment, data loggers, and medical diagnostic devices. The MSOP-8 package and minimal external capacitor requirements make it a drop-in negative rail solution for battery-powered mixed-signal designs.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHED CAPACITOR REGULATOR |
| Input Voltage-Max | 5.25V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | -2.562 V |
| Output Voltage-Min | -2.438 V |
| Output Voltage-Nom | -2.5 V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 7mA |
| Surface Mount | YES |
| Switcher Configuration | DOUBLER INVERTER |
| Switching Frequency-Max | 900kHz |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LTC1550LCMS8-2.5#PBF:
suggested
suggested
suggested
Frequently Asked Questions
What output voltage does the LTC1550LCMS8-2.5#PBF produce and what input range does it require?
The LTC1550LCMS8-2.5#PBF generates a regulated -2.5V output from an input voltage between 2.7V and 5.25V, with 5V being the nominal input; this makes it directly compatible with standard 5V single-supply systems that need a negative rail for op-amps, ADC references, or LCD bias without a separate inverting regulator.
How does the switched-capacitor topology of the LTC1550LCMS8-2.5#PBF reduce noise compared to inductor-based inverters?
Unlike PWM buck-boost inverters that switch inductors and generate broadband EMI, the LTC1550LCMS8-2.5#PBF uses a charge-pump switched-capacitor architecture that transfers energy via flying capacitors typically in the 1µF to 10µF range, producing lower high-frequency noise and avoiding the magnetic field emissions that complicate shielding of sensitive 16-bit ADC circuits operating from the -2.5V rail.
What external components are needed to complete the LTC1550LCMS8-2.5#PBF design, and how much board area is required?
A typical LTC1550LCMS8-2.5#PBF application requires two flying capacitors of approximately 1µF each and one output filter capacitor of 10µF; combined with the MSOP-8 package footprint of roughly 3mm × 3mm, the complete power supply occupies under 50mm² of PCB area, making it one of the smallest negative-rail solutions available.
Can the LTC1550LCMS8-2.5#PBF supply enough current for a dual-supply rail-to-rail op-amp in a portable instrument?
The LTC1550LCMS8-2.5#PBF is designed for low-current negative rail applications; it can typically source 20–30mA from its -2.5V output, which is sufficient for one or two low-power op-amps with quiescent currents under 10mA each but may be insufficient for high-drive audio or motor-driver negative rails requiring over 100mA.
When should a designer choose the LTC1550LCMS8-2.5#PBF over a linear negative regulator like an LM337 for generating -2.5V?
The LTC1550LCMS8-2.5#PBF is preferred when the system has only a single 5V rail and no negative input voltage is available, since the LM337 requires a negative input supply several volts below -2.5V to regulate; the switched-capacitor approach generates the -2.5V autonomously from the positive rail, eliminating the dual-supply transformer or boost stage the LM337 would otherwise demand.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $4.2300 | $80.37 |
| 250+ | $3.5722 | $893.06 |
| 500+ | $3.4625 | $1731.25 |
| 1000+ | $3.1900 | $3190.00 |
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