My Inquiry
My Account
Analog Devices Inc. LTC3459EDC#TRPBF
- Part No.:
- LTC3459EDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3459EDC#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 60MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3459EDC#TRPBF from Analog Devices (formerly Linear Technology) is a micropower synchronous boost converter IC designed for low-input-voltage, size-constrained portable systems. It operates from 1.5V to 5.5V input, delivers programmable output from 2.5V to 10V, achieves >85% efficiency across wide load range (0.01–100mA), and features Burst Mode® operation with 10μA quiescent current. It is used in LCD bias generation and supercapacitor charging where ultralow power and compact solution size are critical.
For engineers reviewing the LTC3459EDC#TRPBF datasheet, LTC3459EDC#TRPBF pinout, LTC3459EDC#TRPBF application, or LTC3459EDC#TRPBF equivalent, key selection criteria include its 2mm × 2mm DFN package, internal N- and P-channel MOSFETs (RDS(ON) = 2.8Ω/4.2Ω), 75mA typical peak switch current, inrush-limited startup, and output disconnect in shutdown.
Technical Context
The LTC3459EDC#TRPBF employs a fixed-frequency Burst Mode® control architecture with zero-current detection and tOFF timer proportional to 1/(VOUT – VIN). It integrates both N-channel (main switch) and P-channel (synchronous rectifier) MOSFETs, eliminating external diode requirements and enabling regulation even when VOUT < VIN.
Its feedback comparator uses a precise 1.22V reference (±3%) to set output voltage via external resistor divider. The device includes thermal shutdown, overtemperature protection, and logic-level SHDN pin with 1V rising-edge threshold and 80mV hysteresis - all optimized for battery-powered operation with sub-1μA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 5.5V - supports single Li-ion, 2–3 alkaline/NiMH cells, or low-impedance sources. |
| Output Voltage Range | 2.5V to 10V - programmable via external resistor divider; enables flexible biasing for OLED/LCD panels. |
| Quiescent Current | 10μA - enables multi-year battery life in always-on sensor or backup power applications. |
| Shutdown Current | <1μA - ensures negligible battery drain during system sleep or storage. |
| Peak Switch Current | 75mA (typ) - defines maximum deliverable output current at given VIN/VOUT and inductor value. |
| Switching Frequency | ~2MHz - allows use of small 15–33μH inductors and ceramic capacitors for minimal PCB footprint. |
| N-MOSFET RDS(ON) | 2.8Ω @ VOUT = 5V - limits conduction loss and thermal rise during high-duty-cycle operation. |
| P-MOSFET RDS(ON) | 4.2Ω @ VOUT = 5V - determines efficiency in synchronous rectification phase, especially at low VOUT. |
Pinout & Package
The LTC3459EDC#TRPBF is housed in a 6-pin, 2mm × 2mm plastic DFN package (DC grade) with exposed pad (Pin 7) soldered to PCB ground for thermal and electrical performance. Pin 1 is marked by a dot or chamfered corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply connection | Bypass with ≥1μF low-ESR ceramic capacitor; accepts 1.5–5.5V source including partially discharged batteries. |
| VOUT (Pin 2) | Regulated output node | Delivers programmable 2.5–10V; requires 2.2–10μF ceramic output capacitor for stable ripple <50mVp-p. |
| SHDN (Pin 3) | Enable/disable control input | Logic-high (>1V) enables operation; logic-low disables all circuitry and reduces IQ to <1μA. |
| FB (Pin 4) | Feedback input to error amplifier | Sets VOUT = 1.22V × (1 + R1/R2); input leakage <50nA preserves divider accuracy. |
| GND (Pin 5) | Signal and power ground reference | Must be short, low-impedance path to (–) terminals of VIN/VOUT capacitors; connects to exposed pad. |
| SW (Pin 6) | Internal switch node | Connects to inductor; drives 15–33μH external inductor; high dv/dt demands short, wide PCB trace. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-channel MOSFETs eliminate Schottky diode, improving efficiency by 5–10% vs. asynchronous designs. |
| Burst Mode® operation | Maintains >85% efficiency down to 10μA load by pulsing full switching cycles only when needed. |
| Inrush current limiting | Peak current control prevents surge at startup - critical for charging supercapacitors without damaging inrush. |
| Output disconnect in shutdown | VOUT is fully isolated from VIN during SHDN, preventing backfeed and preserving battery charge. |
| Ultralow quiescent current | 10μA operating IQ extends runtime in coin-cell or energy-harvesting applications with intermittent loads. |
| Wide input/output flexibility | Regulates VOUT below VIN (buck-like mode) and above VIN (boost mode), supporting hybrid power architectures. |
Applications
| LCD Bias Generation | OLED Display Power |
|---|---|
Use Scenario: Providing stable 5–10V bias rails for segment or active-matrix LCD panels in handheld medical devices. IC Role / Device Role / Timing Role: Primary DC/DC regulator generating high-side gate drive and common electrode voltages. Use Value: Delivers regulated output with <50mVp-p ripple using only three external components, minimizing board area in space-constrained enclosures. |
Use Scenario: Supplying 3.3V or 5V anode voltage for small monochrome or color OLED modules in wearables. IC Role / Device Role / Timing Role: Micropower boost controller maintaining constant brightness across battery discharge curve. Use Value: Achieves >85% efficiency at 20mA load from 2xAA input, extending battery life while avoiding audible switching noise via Burst Mode®. |
| Supercapacitor Charging | Digital Camera Backlight |
Use Scenario: Charging a 2F/5V Maxwell Ultracap PC5-5 from 3.3V rail to serve as backup power for real-time clocks or SRAM. IC Role / Device Role / Timing Role: Constant-current charger with controlled peak inductor current (75mA typ) and soft-start behavior. Use Value: Prevents destructive inrush by limiting ILIMIT and regulating during VOUT < VIN phase - no external current-sense or termination circuitry required. |
Use Scenario: Driving white LED backlight strings requiring 5V from 3.3V logic rail in compact digital cameras or camcorders. IC Role / Device Role / Timing Role: High-efficiency boost stage delivering up to 30mA at 5V with minimal thermal rise. Use Value: Enables 5V@30mA output from 3.3V input with only 22μH inductor and 4.7μF output cap - solution size under 15mm². |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3400EDC#TRPBF | Higher 600mA peak current, 1.2MHz switching, fixed 5V output (non-programmable), 19μA IQ | Optimized for higher-current 5V-only loads; lacks VOUT programming and sub-10μA quiescent capability | Select when fixed 5V output and >100mA load are required; not suitable for ultra-low-power or adjustable-VOUT designs. |
| LT1613CS6#TRMPBF | 550mA ISW, 1.4MHz, 3mA IQ, 0.9–10V input, 34V max VOUT, ThinSOT-6 package | Supports wider input range and higher VOUT but lacks synchronous rectification and output disconnect | Choose for higher-output-voltage (>10V) or higher-input-voltage (>5.5V) needs; accept lower efficiency and no VOUT isolation in shutdown. |
Compared with LTC3400EDC#TRPBF and LT1613CS6#TRMPBF, the LTC3459EDC#TRPBF uniquely combines programmable 2.5–10V output, 10μA quiescent current, integrated synchronous switches, and output disconnect - making it optimal for ultra-low-power, size-sensitive, and battery-backed applications where precision biasing and minimal standby drain are essential.
Availability
LTC3459EDC#TRPBF is available at Aetrix Electronics and suitable for LCD bias generation, supercapacitor charging, OLED display power, and portable medical instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for LTC3459EDC#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its high-performance analog and power management portfolio. Linear pioneered precision DC/DC conversion for demanding portable and industrial applications.
The LTC3459EDC#TRPBF belongs to Linear's micropower synchronous boost converter family, engineered specifically for battery-powered systems needing high efficiency at microamp loads, minimal solution footprint, and robust start-up behavior under low-VIN conditions.
FAQ
What is the minimum input voltage supported by the LTC3459EDC#TRPBF?
The LTC3459EDC#TRPBF supports a minimum input voltage of 1.5V, enabling operation from nearly depleted alkaline or NiMH cells and single-cell Li-ion batteries down to end-of-discharge. This specification is guaranteed across the –40°C to 85°C operating temperature range and allows reliable startup even when VIN drops below VOUT during supercapacitor charging phases.
Does the LTC3459EDC#TRPBF require an external Schottky diode?
No, the LTC3459EDC#TRPBF does not require an external Schottky diode because it integrates both N-channel and P-channel MOSFETs for synchronous rectification. This eliminates conduction losses associated with diode forward voltage drop and improves efficiency by 5–10% compared to asynchronous boost converters - a key advantage confirmed in the device's typical efficiency curves and block diagram.
How is the output voltage programmed on the LTC3459EDC#TRPBF?
The output voltage of the LTC3459EDC#TRPBF is programmed using an external resistor divider between VOUT, FB, and GND, based on the formula VOUT = 1.22V × (1 + R1/R2). The FB pin has a precise 1.22V reference (±3%) and low 50nA input leakage, ensuring accurate and stable regulation across temperature and load - as verified in the Electrical Characteristics table and Typical Performance plots.
What package type is used for the LTC3459EDC#TRPBF?
The LTC3459EDC#TRPBF uses a 6-pin, 2mm × 2mm plastic DFN package (DC grade) with exposed thermal pad (Pin 7). This low-profile package is specified in Linear's drawing #05-08-1703 and requires soldering the exposed pad to PCB ground for optimal thermal performance and electrical stability - a requirement explicitly stated in the Absolute Maximum Ratings and Package Description sections.
Can the LTC3459EDC#TRPBF regulate output voltage when VOUT is less than VIN?
Yes, the LTC3459EDC#TRPBF can maintain regulation when VOUT is less than VIN - a feature confirmed in the device description: "Although the part is primarily intended for boost applications, VOUT will maintain regulation below VIN (at reduced efficiency)." This occurs by operating the P-channel MOSFET as a linear pass element, enabling hybrid buck-boost functionality without external components.
LTC3459EDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 10V (Switch)
- Current - Output:
- 60mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
LTC3459EDC#TRPBF FAQ
1.How can I place an order for LTC3459EDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3459EDC#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC3459EDC#TRPBF reliable?
The price and inventory of LTC3459EDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3459EDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3459EDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3459EDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3459EDC#TRPBF?
LTC3459EDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3459EDC#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC3459EDC#TRPBF?
For technical support, including LTC3459EDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3459EDC#TRPBF requirements.
6.How does Aetrix verify that LTC3459EDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3459EDC#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC3459EDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3459EDC#TRPBF?
All LTC3459EDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3459EDC#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC3459EDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3459EDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3459EDC#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
