LTC1550LCMS8-2.5 Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LTC1550LCMS8-2.5 is a low-noise switched-capacitor regulated voltage inverter from Analog Devices, accepting 2.7 V to 5.25 V input and generating a regulated -2.5 V output at up to 20 mA, packaged in an 8-pin SOIC.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LTC1550LCMS8-2.5 Datasheet PDF
- Category
- Integrated Circuit
- 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 generates a regulated -2.5 V output from a 2.7 V to 5.25 V input without an inductor
- 20 mA maximum output current in a single-function 8-pin SOIC for compact negative-rail generation
- Input voltage range of 2.7 V to 5.25 V supports both 3.3 V and 5 V system power buses
Applications
LTC1550LCMS8-2.5 is used in mixed-signal and analog circuits that require a small negative supply rail, such as op-amp bias supplies, LCD contrast generators, and sensor signal conditioning circuits. It is particularly valuable in battery-powered portable instruments where space is limited and an inductor-based inverter would occupy too much board area. The regulated -2.5 V output at up to 20 mA satisfies the bias needs of most low-power analog front-ends.
Specifications
| YTEOL | 0 |
| 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 | e0 |
| Number of Functions | 1 |
| Output Current-Max | 0.02A |
| Output Voltage-Nom | -2.5 V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 235 |
| 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 | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage and maximum current does LTC1550LCMS8-2.5 provide?
LTC1550LCMS8-2.5 generates a regulated -2.5 V output with a maximum output current of 20 mA. This is sufficient to bias low-power op-amps, reference ICs, and analog sensor circuits that require a small negative supply rail derived from a single positive 3.3 V or 5 V bus in space-constrained portable designs.
What input voltage range does LTC1550LCMS8-2.5 accept, and which power buses does it support?
LTC1550LCMS8-2.5 accepts input voltages from 2.7 V to 5.25 V, with a nominal input of 5 V. This range covers both 3.3 V lithium-ion battery outputs and standard 5 V regulated rails, giving design engineers flexibility to use a single part across multiple platform configurations without changing the voltage inverter component.
Why would a designer choose LTC1550LCMS8-2.5 over an inductor-based negative supply for an op-amp circuit?
LTC1550LCMS8-2.5 uses a switched-capacitor topology that eliminates the need for an external inductor, reducing BOM cost and EMI compared to inductive DC-DC inverters. For loads up to 20 mA at -2.5 V, the switched-capacitor approach occupies less than half the board area of a typical inductor-based inverter, which is critical in handheld instruments and wearable medical devices with tight PCB constraints.
What package does LTC1550LCMS8-2.5 use, and how does it support thermal management at 20 mA output?
LTC1550LCMS8-2.5 is housed in an 8-pin SOIC (PDSO-G8) package. At 20 mA maximum output current and 5 V input, the power dissipation is low enough that the standard SOIC thermal resistance is adequate without heatsinking in ambient temperatures up to 70°C, making it suitable for commercial-grade battery-powered and benchtop instrument applications.
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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.
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