LTC1261LCMS8-4.5#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LTC1261LCMS8-4.5#PBF is a switched-capacitor voltage inverter IC from Analog Devices, generating a fixed -4.5V output from a 5V input rail. It operates with an input voltage range of 4.75V to 5.25V and comes in a compact MSOP-8 package, ideal for space-constrained designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC1261LCMS8-4.5#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
- Fixed -4.5V output from a 5V input using switched-capacitor topology, eliminating inductors for a simpler BOM
- Tight input voltage range of 4.75V to 5.25V ensures stable negative-rail generation in 5V-only systems
- Compact MSOP-8 (MS8) package with lead-free (PBF) RoHS-compliant construction for modern PCB designs
- Voltage-mode control with low quiescent current, suitable for noise-sensitive analog and mixed-signal applications
Applications
The LTC1261LCMS8-4.5#PBF is well suited for generating a negative supply rail in portable instruments, data acquisition systems, and op-amp bias circuits powered from a single 5V source. Its switched-capacitor design makes it ideal for LCD bias supplies, RS-232 transceivers, and analog front-end circuits where an inverting charge-pump is needed without a bulky inductor. The RoHS-compliant PBF package makes it appropriate for consumer electronics and industrial sensor modules requiring compact, clean negative-voltage generation.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| Reach Compliance Code | Compliant |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHED CAPACITOR REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Input Voltage-Max | 5.25V |
| Input Voltage-Min | 4.75V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.02A |
| Output Voltage-Max | -4.343 V |
| Output Voltage-Min | -4.657 V |
| Output Voltage-Nom | -4.5 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) | 1.5mA |
| Surface Mount | YES |
| Switcher Configuration | DOUBLER INVERTER |
| Switching Frequency-Max | 650kHz |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage does the LTC1261LCMS8-4.5#PBF produce and from what input range?
The LTC1261LCMS8-4.5#PBF generates a fixed -4.5V output from an input voltage range of 4.75V to 5.25V (nominal 5V). This makes it a convenient single-supply solution for creating a negative rail without any inductors, using a switched-capacitor charge-pump architecture.
Which applications benefit most from the LTC1261LCMS8-4.5#PBF switched-capacitor inverter?
Typical applications include RS-232 transceiver bias, LCD panel negative-supply rails, op-amp dual-supply circuits, and data acquisition front-ends needing a clean -4.5V rail. The inductor-free switched-capacitor topology keeps board space below 50 mm² for the power section, making it ideal for compact handheld instruments.
How does the MSOP-8 package size of LTC1261LCMS8-4.5#PBF compare to standard SOIC-8 for board-space-critical layouts?
The MSOP-8 (MS8) package occupies roughly 9 mm² of PCB area, compared to approximately 29 mm² for a standard SOIC-8, saving about 20 mm² per device. This size advantage, combined with the charge-pump's inductor-free design, makes the LTC1261LCMS8-4.5#PBF a strong choice for high-density mixed-signal boards.
Is LTC1261LCMS8-4.5#PBF RoHS compliant and what does the PBF suffix indicate?
Yes, the PBF (Pb-Free) suffix confirms the LTC1261LCMS8-4.5#PBF is manufactured with lead-free solder terminations, meeting RoHS and REACH compliance standards. The part uses a tin-based finish on the 8-pin MSOP package, suitable for wave or reflow soldering at standard lead-free profiles up to 260°C peak.
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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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