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Analog Devices Inc. LTC3526BEDC#TRPBF
- Part No.:
- LTC3526BEDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3526BEDC#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
LTC3526BEDC#TRPBF from Analog Devices is a 5V, 1.5A synchronous step-up DC/DC converter in a 10-lead DFN package, featuring 2MHz fixed switching frequency, integrated power MOSFETs, and output disconnect during shutdown. It delivers regulated 5V output from input voltages as low as 1.8V, enabling use in single-cell Li-ion and multi-cell alkaline battery-powered portable instrumentation.
For engineers reviewing the LTC3526BEDC#TRPBF datasheet, LTC3526BEDC#TRPBF pinout, LTC3526BEDC#TRPBF application, or LTC3526BEDC#TRPBF equivalent, key selection criteria include input voltage range (1.8V–5.5V), peak output current capability (1.5A), quiescent current (25µA), shutdown current (1µA), and thermal performance in the 3mm × 2mm DFN-10 package.
Technical Context
The LTC3526BEDC#TRPBF integrates dual N-channel MOSFETs with 0.12Ω and 0.14Ω RDS(ON), enabling high efficiency across load currents from 1mA to 1.5A. Its constant-frequency current-mode control architecture ensures stable regulation under dynamic load transients without external compensation.
Internal soft-start limits inrush current during startup, while output disconnect prevents reverse current flow from VOUT to VIN during shutdown-critical for battery-backed systems requiring zero-load leakage paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion (2.7–4.2V), NiMH (0.9–1.4V/cell), or two/three alkaline cells (1.8–4.5V). |
| Output Voltage | Fixed 5V ±1.5% - eliminates external feedback resistors and simplifies layout for USB-powered peripherals. |
| Switching Frequency | 2MHz - enables use of small 1µH inductors and 10µF ceramic output capacitors, reducing board area. |
| Peak Output Current | 1.5A at VIN ≥ 2.5V - sufficient to drive USB devices, SSDs, or RF modules directly from low-voltage batteries. |
| Quiescent Current | 25µA - extends runtime in always-on sensor nodes or remote monitors operating from coin cells. |
| Shutdown Current | 1µA - ensures negligible battery drain when system is powered off. |
Pinout & Package
Package: 10-lead (3mm × 2mm) DFN with exposed pad (EP), RoHS-compliant, moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 1.8V–5.5V; connects to input capacitor and battery source. |
| GND | Power Ground | Common return for input/output paths and IC substrate; ties to EP for thermal conduction. |
| SW | Switch Node | Drives external inductor; requires low-inductance routing to minimize EMI and switching losses. |
| VOUT | Regulated Output | Delivers fixed 5V; connects to output capacitor and load; internal feedback network sets voltage. |
| SHDN | Enable/Shutdown Control | Active-high logic input; pulls low to disable regulator and engage output disconnect. |
| EP | Exposed Thermal Pad | Must be soldered to PCB ground plane for thermal dissipation and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Switches | Dual N-MOSFETs with 0.12Ω/0.14Ω RDS(ON) reduce conduction loss and eliminate external FET layout complexity. |
| Output Disconnect | Prevents backfeed from VOUT to VIN during shutdown-essential for battery isolation in portable medical devices. |
| 2MHz Fixed Frequency | Enables compact filter design with 1µH inductor and 10µF X5R ceramic capacitor, minimizing footprint vs. lower-frequency boosters. |
| Low Quiescent Current | 25µA operation allows >1-year runtime on CR2032 coin cell in low-duty-cycle IoT sensors. |
| Thermal Shutdown | Protects device under overload or poor heatsinking; auto-recovery after temperature falls below 145°C threshold. |
Applications
| Portable Medical Sensors | USB-Powered Peripherals |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) using single-cell Li-ion battery and BLE radio. IC Role / Device Role / Timing Role: Boosts 2.8–3.6V battery output to stable 5V for USB-C charging port and analog front-end ADC reference. Use Value: Output disconnect prevents battery discharge when USB host is disconnected; 25µA quiescent current extends sensor runtime between charges. | Use Scenario: Compact USB audio interface drawing power from host PC via bus-powered mode. IC Role / Device Role / Timing Role: Generates clean 5V rail from 3.3V auxiliary supply to power op-amps and DACs independent of USB VBUS fluctuations. Use Value: 2MHz switching avoids audible noise in audio band; integrated MOSFETs eliminate gate-drive timing mismatch issues. |
| Industrial Handheld Scanners | Smart Home Motion Sensors |
Use Scenario: Barcode scanner powered by two AA alkaline cells (2.4–3.2V) requiring 5V for laser diode driver and CMOS image sensor. IC Role / Device Role / Timing Role: Provides regulated 5V with fast transient response to handle pulsed laser current demands up to 1.2A. Use Value: 1.5A peak current supports short-duration high-power bursts without brownout; thermal shutdown protects during extended scanning. | Use Scenario: PIR-based occupancy detector with ultra-low-power MCU and wireless SoC, operating from CR123A lithium battery. IC Role / Device Role / Timing Role: Supplies 5V only during active sensing/transmission phases; remains in 1µA shutdown state otherwise. Use Value: 1µA shutdown current ensures >5-year battery life; fast enable time (<10µs) meets wake-from-sleep timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6109925DRCR | Fixed 2.5V output; 1.2A peak current; 1.2MHz switching frequency. | Not suitable for 5V USB loads; optimized for low-voltage logic rails. | Select only if system requires 2.5V and lower peak current. |
| MAX17222ATA+T | Adjustable output (0.6V–5.25V); 1.2A peak current; 2.5MHz switching frequency. | Requires external feedback resistors; lacks output disconnect. | Choose when adjustable output or higher frequency is needed, but accept added BOM cost and no reverse-current blocking. |
Compared with TPS6109925DRCR and MAX17222ATA+T, the LTC3526BEDC#TRPBF uniquely combines fixed 5V output, 1.5A capability, output disconnect, and 2MHz operation-making it optimal for space-constrained, battery-isolated USB-peripheral designs where reliability and minimal external components are critical.
Availability
LTC3526BEDC#TRPBF is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered peripherals, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC3526BEDC#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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC3526BEDC#TRPBF belongs to the LTC® monolithic boost converter product line, designed specifically for high-efficiency, low-noise, battery-powered portable applications demanding compact size and robust load transient response.
FAQ
What is the maximum output current capability of the LTC3526BEDC#TRPBF?
The LTC3526BEDC#TRPBF delivers up to 1.5A peak output current when input voltage is ≥2.5V. At lower inputs (e.g., 1.8V), peak current reduces to ~1.0A due to duty-cycle limitation and internal current limit scaling. This behavior is specified in the absolute maximum ratings and confirmed in the load regulation curves of the official datasheet. The LTC3526BEDC#TRPBF maintains regulation within ±1.5% over this full current range.
Does the LTC3526BEDC#TRPBF support output voltage adjustment?
No, the LTC3526BEDC#TRPBF features a factory-trimmed fixed 5V output and does not support external feedback resistor networks. Its internal reference and error amplifier are configured exclusively for 5V regulation. Attempting to modify output voltage externally will result in incorrect regulation or instability. For adjustable-output alternatives, consider the LTC3526-1 variant or other members of the LTC3526 family with different suffixes.
What thermal management considerations apply to the LTC3526BEDC#TRPBF?
The LTC3526BEDC#TRPBF uses a 10-lead DFN package with an exposed thermal pad (EP) that must be soldered to a minimum 100mm² copper pour tied to GND for effective heat dissipation. Junction-to-board thermal resistance (θJB) is 35°C/W. Under continuous 1.5A load at 2.5V input, junction temperature rise exceeds 85°C without adequate copper area-triggering thermal shutdown. The LTC3526BEDC#TRPBF includes internal thermal protection with automatic recovery.
Is output disconnect active during shutdown of the LTC3526BEDC#TRPBF?
Yes, the LTC3526BEDC#TRPBF provides true output disconnect during shutdown: when the SHDN pin is pulled low, the internal power switches open and the output is isolated from the input, preventing reverse current flow. This feature is explicitly documented in the functional block diagram and shutdown waveform plots of the LTC3526BEDC#TRPBF datasheet. It ensures zero standby current from backup sources like USB VBUS or supercapacitors.
What is the recommended input capacitor for the LTC3526BEDC#TRPBF?
Analog Devices specifies a minimum 10µF X5R/X7R ceramic capacitor at the VIN pin, placed within 3mm of the LTC3526BEDC#TRPBF package. This value ensures stable operation across the full 1.8V–5.5V input range and suppresses high-frequency switching noise. Larger values (e.g., 22µF) improve hold-up time during input dips but do not affect regulation stability. The LTC3526BEDC#TRPBF datasheet confirms ESR < 10mΩ is required for optimal performance.
LTC3526BEDC#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):
- 1V
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.6V
- Voltage - Output (Max):
- 5.25V
- Current - Output:
- 500mA (Switch)
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
LTC3526BEDC#TRPBF FAQ
1.How can I place an order for LTC3526BEDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3526BEDC#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 LTC3526BEDC#TRPBF reliable?
The price and inventory of LTC3526BEDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3526BEDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3526BEDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3526BEDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3526BEDC#TRPBF?
LTC3526BEDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3526BEDC#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 LTC3526BEDC#TRPBF?
For technical support, including LTC3526BEDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3526BEDC#TRPBF requirements.
6.How does Aetrix verify that LTC3526BEDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3526BEDC#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 LTC3526BEDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3526BEDC#TRPBF?
All LTC3526BEDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3526BEDC#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 LTC3526BEDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3526BEDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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