LT1109ACS8#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT1109ACS8#PBF is an adjustable boost switching regulator IC capable of delivering up to 2 A output current from a 2 V to 9 V input supply using pulse frequency modulation control. It integrates the power switch and control circuitry in an 8-pin SOIC package for compact DC-DC conversion. Suitable for battery-powered portables, handheld devices, and 5V rail generation from single-cell batteries.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1109ACS8#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0800(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1109ACS8#PBF?
- Adjustable output voltage boost regulator with up to 2A output current capability
- Wide input voltage range of 2V to 9V supporting single-cell and multi-cell battery inputs
- Pulse frequency modulation control for improved light-load efficiency
- Voltage-mode control for stable closed-loop regulation across load transients
- Compact 8-pin SOIC package integrating switch and control in minimal board area
- Low minimum input voltage of 2V enabling deep battery discharge operation
What is LT1109ACS8#PBF used for?
The LT1109ACS8#PBF is used in portable electronics, handheld instruments, and battery-operated IoT nodes where a single AA or Li-ion cell must be boosted to a regulated 5V or custom output voltage at up to 2 A. Its pulse frequency modulation topology keeps efficiency high under light-load conditions, extending battery life in duty-cycled systems such as wireless sensor nodes and remote controls. It is also applied in industrial handheld scanners and medical portable equipment requiring compact, efficient power conversion from a 2V to 9V source.
What are the specifications of LT1109ACS8#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1610 (S8) |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE FREQUENCY MODULATION |
| Input Voltage-Max | 9V |
| Input Voltage-Min | 2V |
| Input Voltage-Nom | 3V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 2A |
| Output Voltage-Nom | 1.25V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 120kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 | Malaysia |
Where can I find the LT1109ACS8#PBF datasheet?
LT1109ACS8#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1109ACS8#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output current can the LT1109ACS8#PBF deliver, and what input voltage range does it accept?
The LT1109ACS8#PBF can deliver up to 2 A of output current and accepts an input voltage ranging from 2V to 9V, enabling it to operate from a single AA alkaline cell down to near-end-of-life or from a Li-ion battery over its full discharge curve.
How does the LT1109ACS8#PBF achieve high efficiency at light loads in battery-powered systems?
The LT1109ACS8#PBF uses pulse frequency modulation (PFM) control, which reduces switching frequency at light loads to minimize switching losses; this technique typically extends battery runtime by 20–40% compared to fixed-frequency PWM regulators in duty-cycled applications drawing only a few milliamps on average.
Can the LT1109ACS8#PBF generate a fixed 5V output from a 3V lithium coin-cell battery?
Yes, the LT1109ACS8#PBF boosts inputs as low as 2V up to a regulated adjustable output, so setting the feedback network to target 5V output is straightforward from a 3V lithium coin cell; maximum available output current at that conversion ratio depends on input current limits and inductor selection.
Which industrial temperature-range scenarios are feasible with the LT1109ACS8#PBF given its package and rating?
The LT1109ACS8#PBF in an 8-pin SOIC package is rated for commercial temperature operation; for designs needing -40°C to +85°C industrial temperature range, the LT1109A family includes variants qualified over that extended range, suitable for outdoor handheld and industrial field equipment.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $5.4100 | $102.79 |
| 100+ | $4.8743 | $487.43 |
| 500+ | $4.8200 | $2410.00 |
| 1000+ | $4.0800 | $4080.00 |
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