My Inquiry
My Account
Analog Devices Inc. LTC3459EDC#TRMPBF
- Part No.:
- LTC3459EDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3459EDC#TRMPBF.pdf
- Description:
- IC REG BOOST ADJ 60MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,751
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3459EDC#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower synchronous boost converter IC designed for low-current, size-constrained portable power rails. It operates from 1.5V to 5.5V input, delivers programmable output from 2.5V to 10V, achieves >85% efficiency at 30mA load, and features Burst Mode operation with <1μA shutdown current. It is used in LCD bias generation and supercapacitor charging circuits where ultralow quiescent current and compact solution size are critical.
For engineers reviewing the LTC3459EDC#TRMPBF datasheet, LTC3459EDC#TRMPBF pinout, LTC3459EDC#TRMPBF application, or LTC3459EDC#TRMPBF equivalent, key selection criteria include input voltage range (1.5–5.5V), programmable output (2.5–10V), peak switch current (75mA typ), Burst Mode efficiency profile, and DFN-6 (2mm × 2mm) package compatibility with high-density PCB layouts.
Technical Context
The LTC3459EDC#TRMPBF employs a fixed-frequency, current-mode synchronous boost architecture with integrated N-channel and P-channel MOSFETs. Its Burst Mode control uses a 1.22V reference and zero-current detection to minimize quiescent draw while maintaining regulation across wide load ranges (0.01–100mA).
Inductor current is actively limited during startup to prevent inrush, and tOFF timing scales inversely with (VOUT – VIN) to sustain continuous conduction in Burst packets. The internal 2.8Ω NMOS and 4.2Ω PMOS switches enable efficient operation without external diodes, and output disconnect in shutdown ensures true load isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 1.5V to 5.5V - supports single Li-ion, 2–3 alkaline/NiMH cells, or low-impedance sources |
| VOUT Range | 2.5V to 10V - set via external resistor divider on FB pin; enables LCD bias and supercap charging |
| Peak Switch Current | 75mA typical - limits inductor stress and thermal rise during burst cycles |
| Quiescent Current | 10μA typical - enables multi-month battery life in always-on sensor nodes |
| Shutdown Current | <1μA - isolates VOUT from VIN; critical for zero-leakage backup power systems |
| Efficiency | >85% at 30mA - achieved via synchronous rectification and Burst Mode optimization |
| Package | 6-pin 2mm × 2mm DFN (DC) - exposes thermal pad for PCB heat sinking; footprint ≤4mm² |
Pinout & Package
Package: 6-lead plastic DFN (2mm × 2mm), exposed thermal pad (Pin 7) connected to GND. Requires soldering of exposed pad for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply connection | Bypass with ≥1μF ceramic capacitor; supplies both control circuitry and power switch |
| VOUT (Pin 2) | Regulated output node | Delivers boosted voltage; requires 2.2–10μF X5R ceramic output capacitor for ripple control |
| SHDN (Pin 3) | Enable/disable logic input | Logic-high (>1V) enables operation; logic-low disables all functions and reduces IQ to <1μA |
| FB (Pin 4) | Feedback voltage sense | Connects to resistor divider; sets VOUT = 1.22V × (1 + R1/R2); leakage <50nA preserves accuracy |
| GND (Pin 5) | Signal and power ground | Common return for VIN, VOUT, and internal circuitry; must tie directly to capacitor negatives |
| SW (Pin 6) | Switch node | Drives external inductor (15–33μH); high dv/dt demands short, wide PCB traces to limit EMI |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated 2.8Ω NMOS and 4.2Ω PMOS eliminate external Schottky diode, reducing BOM count and losses |
| Burst Mode operation | Maintains >85% efficiency down to 10μA load by gating switching cycles-no external enable required |
| Inrush current limiting | Peak current comparator prevents surge at startup, protecting input source and enabling safe cold-boot into capacitive loads |
| Output disconnect in shutdown | VOUT is fully isolated from VIN when SHDN = GND, eliminating reverse leakage paths in backup power applications |
| Ultralow quiescent current | 10μA operating IQ extends battery life in intermittently active devices such as remote sensors and wearables |
Applications
| LCD Bias Generation | Supercapacitor Charging |
|---|---|
Use Scenario: Generating stable 5–10V bias for small monochrome or segment LCDs in handheld medical meters and industrial HMI panels. IC Role / Device Role / Timing Role: Boost regulator providing regulated high-voltage rail with minimal board area and no external diode. Use Value: Enables use of low-cost, low-profile 2mm × 2mm DFN layout; 85%+ efficiency at 1–5mA loads extends coin-cell life beyond 2 years. | Use Scenario: Charging a 2F/5V Maxwell Ultracap PC5-5 from a 3.3V microcontroller rail for backup SRAM retention during main power loss. IC Role / Device Role / Timing Role: Constant-current-controlled boost charger with inrush limiting and output disconnect. Use Value: Prevents damaging inrush surges; maintains regulation below VIN during initial charge phase; <1μA shutdown current avoids supercap self-discharge acceleration. |
| Digital Camera Flash Support | Low-Power OLED Display Supply |
Use Scenario: Providing 5V auxiliary rail for white LED flash drivers in compact digital cameras and action cams. IC Role / Device Role / Timing Role: Micropower boost converter delivering pulsed 30mA loads with fast transient response. Use Value: Burst Mode ensures near-zero standby drain between flashes; 75mA peak switch current supports short-duration high-current bursts. | Use Scenario: Supplying 3.3V or 5V bias to small OLED displays in portable test equipment and smart badges. IC Role / Device Role / Timing Role: Efficient, low-noise DC-DC source with tight output regulation over battery discharge curve. Use Value: Maintains display brightness across 1.8–3.6V input range; 10μA IQ allows >6-month shelf life on primary lithium batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3400ES6#TRMPBF | Higher peak current (600mA), wider VOUT range (up to 5V only), higher IQ (19μA), SOT-23-6 package | Optimized for higher-current 3.3V/5V rails; not suitable for >5V outputs like LCD bias | Select LTC3459EDC#TRMPBF when VOUT > 5V or ultralow IQ (<10μA) is mandatory |
| LTC3429EDC#TRMPBF | Includes soft-start and output disconnect, same 2mm × 2mm DFN, but higher IQ (20μA) and fixed 5V output | Designed for fixed-output applications requiring controlled turn-on; lacks programmability | Choose LTC3459EDC#TRMPBF for adjustable VOUT up to 10V and lowest possible shutdown current (<1μA) |
Compared with LTC3400ES6#TRMPBF and LTC3429EDC#TRMPBF, the LTC3459EDC#TRMPBF uniquely combines 10V programmable output, sub-10μA quiescent current, and 2mm × 2mm DFN packaging-making it the only option for space-constrained, high-voltage, micropower boost needs.
Availability
LTC3459EDC#TRMPBF is available at Aetrix Electronics and suitable for LCD bias generation, supercapacitor charging, digital camera flash support, and low-power OLED display supply requiring stable component supply and long-term lifecycle assurance.
Supply support for LTC3459EDC#TRMPBF 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 precision analog and power management product lines with full datasheet, reliability, and support continuity.
The LTC3459EDC#TRMPBF belongs to Linear's micropower DC/DC converter family, engineered specifically for ultra-low-IQ portable power management in battery-operated instrumentation, medical wearables, and energy-harvesting edge nodes.
FAQ
What is the maximum output voltage supported by the LTC3459EDC#TRMPBF?
The LTC3459EDC#TRMPBF supports a programmable output voltage range from 2.5V to 10V, set by an external resistor divider on the FB pin using the formula VOUT = 1.22V × (1 + R1/R2). This 10V capability makes the LTC3459EDC#TRMPBF suitable for LCD bias and other medium-voltage portable applications where higher-than-5V rails are required without external components.
Does the LTC3459EDC#TRMPBF require an external Schottky diode?
No, the LTC3459EDC#TRMPBF does not require an external Schottky diode because it integrates both N-channel and P-channel MOSFETs for synchronous rectification. The internal 2.8Ω NMOS and 4.2Ω PMOS switches replace the diode, reducing conduction losses and improving efficiency-especially at light loads-while simplifying the bill of materials and PCB layout.
How does the LTC3459EDC#TRMPBF handle input voltages higher than the output voltage?
The LTC3459EDC#TRMPBF maintains regulation even when VIN exceeds VOUT (e.g., 5V input to 3.3V output) by entering a pass-through mode where the internal P-channel MOSFET conducts with body diode behavior. In this mode, efficiency decreases due to higher RDS(ON), but output remains regulated-a feature useful for supercapacitor charging and battery-powered systems with varying input conditions.
What is the thermal performance of the LTC3459EDC#TRMPBF in its 2mm × 2mm DFN package?
The LTC3459EDC#TRMPBF in the DC package (2mm × 2mm DFN) has a θJA of 102°C/W. Its exposed thermal pad (Pin 7) must be soldered to a PCB copper plane to achieve rated performance. Under typical 5V-out-at-30mA operation, junction temperature rise remains within safe limits; however, during supercap charging at high duty cycle, die dissipation may reach 100–200mW, requiring adequate copper area for thermal management.
Can the LTC3459EDC#TRMPBF be used to charge NiCd batteries?
The LTC3459EDC#TRMPBF can deliver controlled current to NiCd cells, but it lacks dedicated charge termination circuitry (e.g., −ΔV detection or timer cutoff). While its peak current limiting and programmable VOUT make it usable for simple constant-current pre-charge stages, full NiCd charging requires external supervision. For supercapacitors-where voltage-based termination suffices-the LTC3459EDC#TRMPBF is fully self-contained and widely applied.
LTC3459EDC#TRMPBF 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#TRMPBF FAQ
1.How can I place an order for LTC3459EDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3459EDC#TRMPBF 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#TRMPBF reliable?
The price and inventory of LTC3459EDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3459EDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3459EDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3459EDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3459EDC#TRMPBF?
LTC3459EDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3459EDC#TRMPBF 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#TRMPBF?
For technical support, including LTC3459EDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3459EDC#TRMPBF requirements.
6.How does Aetrix verify that LTC3459EDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3459EDC#TRMPBF 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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3459EDC#TRMPBF?
All LTC3459EDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3459EDC#TRMPBF, 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#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3459EDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3459EDC#TRMPBF 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…
