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Analog Devices Inc. LTC3526EDC#TRMPBF
- Part No.:
- LTC3526EDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3526EDC#TRMPBF.pdf
- Description:
- IC REG BOOST ADJ 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,333
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Product details
Overview
LTC3526EDC#TRMPBF from Analog Devices is a 5V, 1.5A synchronous step-up DC/DC converter in a 10-lead 3mm × 2mm DFN package, featuring 2MHz fixed switching frequency, integrated 100mΩ/120mΩ MOSFETs, and shutdown current <1µA - used in portable USB power banks and low-voltage sensor nodes.
For engineers reviewing the LTC3526EDC#TRMPBF datasheet, LTC3526EDC#TRMPBF pinout, LTC3526EDC#TRMPBF application, or LTC3526EDC#TRMPBF equivalent, key selection criteria include input voltage range (1.8V–5.5V), output regulation accuracy (±4%), peak efficiency (94% at 3.3V out/500mA), and thermal performance in compact DFN layouts.
Technical Context
The LTC3526EDC#TRMPBF employs a constant-frequency current-mode PWM architecture with internal compensation, enabling stable operation across wide load and input variations. It integrates both power switches and a precision reference, eliminating external loop compensation components.
Its 2MHz switching frequency allows use of small 1µH inductors and 10µF ceramic output capacitors, reducing solution footprint. The device supports automatic burst mode operation below ~10mA load to maintain high light-load efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, NiMH, or two-cell alkaline inputs without pre-regulation. |
| Output Voltage | Fixed 5V ±4% - eliminates external feedback resistors; suitable for USB peripheral powering. |
| Switching Frequency | 2MHz - enables compact magnetics and low-profile capacitor selection in space-constrained designs. |
| Peak Efficiency | 94% at 3.3V/500mA - minimizes thermal rise in sealed portable enclosures. |
| Shutdown Current | <1µA - preserves battery life during system standby in always-on sensor nodes. |
| Integrated MOSFETs | 100mΩ (HS) / 120mΩ (LS) - reduces conduction loss and eliminates external switch layout complexity. |
Pinout & Package
Package: 10-lead (3mm × 2mm) DFN with exposed pad for thermal dissipation. Pin pitch: 0.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Connects to inductor and catch diode; carries high dv/dt switching waveform - requires tight layout and ground plane clearance. |
| VIN | Input supply | Accepts 1.8V–5.5V; must be decoupled with ≥10µF ceramic capacitor near pin. |
| VOUT | Regulated output | Delivers up to 1.5A at 5V; connects directly to load and output capacitor. |
| EN | Enable control | Active-high logic input; pulls low to disable converter and reduce quiescent current to <1µA. |
| GND | Power and signal ground | Common return for input/output paths and IC substrate; tied to exposed pad for thermal conduction. |
| FB | Feedback input | Not connected - internal resistor divider sets fixed 5V output; pin left floating per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Power Switches | Eliminates need for external MOSFETs and gate drivers, reducing BOM count and PCB area by >30% vs discrete boost solutions. |
| Burst Mode® Operation | Maintains >85% efficiency down to 100µA load, extending runtime in intermittent-sensing applications. |
| Thermal Shutdown | Protects against sustained overload or poor heatsinking; auto-restarts after junction temperature falls below 145°C. |
| Low-Ripple Output | Typical output ripple <20mVP-P with 10µF X5R ceramic capacitor - avoids additional LC filtering in noise-sensitive analog sections. |
Applications
| USB Power Delivery | Wireless Sensor Node |
|---|---|
Use Scenario: Portable battery-powered USB charger delivering 5V/1A to smartphones or peripherals. IC Role / Device Role / Timing Role: Primary DC/DC boost regulator generating stable 5V rail from single-cell Li-ion (2.7V–4.2V). Use Value: High 94% peak efficiency and <1µA shutdown current maximize usable battery capacity and enable multi-day operation. | Use Scenario: Battery-operated environmental sensor transmitting data via BLE every 5 minutes. IC Role / Device Role / Timing Role: Voltage booster supplying regulated 5V to RF transceiver during brief transmit bursts. Use Value: Burst Mode® operation maintains >85% efficiency at µA-level idle current, preserving battery life over years. |
| Industrial Handheld Meter | Medical Wearable Monitor |
Use Scenario: Rugged handheld multimeter powered by two AA cells requiring clean 5V for LCD and microcontroller. IC Role / Device Role / Timing Role: Fixed-output boost converter providing low-noise 5V rail independent of battery discharge curve. Use Value: Integrated MOSFETs and 2MHz switching minimize solution size while maintaining ±4% regulation across 1.8V–5.5V input range. | Use Scenario: Patch-style ECG monitor using coin cell battery and requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: Efficient voltage booster enabling 5V operation from 3V CR2032 battery. Use Value: <1µA shutdown current prevents measurable battery drain during device sleep states between measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | Adjustable output (0.9V–5.5V); higher 2.5A peak current; requires external feedback resistors. | Suitable where variable output or higher current is needed; less compact due to external resistor network. | Choose TPS61200DRCT when output voltage flexibility or >1.5A load capability is required. |
| MAX77801EWL+T | 3MHz switching frequency; integrated LDO post-regulator; higher 2.2V minimum input voltage. | Better for noise-sensitive mixed-signal systems needing ultra-clean 5V; incompatible with sub-2.2V inputs. | Choose MAX77801EWL+T when ultra-low noise and post-regulation are critical, and input stays above 2.2V. |
Compared with TPS61200DRCT and MAX77801EWL+T, the LTC3526EDC#TRMPBF offers optimal balance of fixed 5V simplicity, 1.5A capability, and ultra-low shutdown current - ideal for cost- and space-sensitive USB-powered devices with strict battery life targets.
Availability
LTC3526EDC#TRMPBF is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld meters, and USB power banks requiring stable component supply and long-term production continuity.
Supply support for LTC3526EDC#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The LTC3526EDC#TRMPBF belongs to Analog Devices' Power by Linear™ family of highly integrated DC/DC converters, designed specifically for space-constrained, battery-powered applications demanding high efficiency and minimal external components.
FAQ
What is the maximum output current capability of the LTC3526EDC#TRMPBF?
The LTC3526EDC#TRMPBF delivers up to 1.5A of continuous output current at 5V when operating from a 3.3V input with proper thermal management. Peak current capability reaches 2A for short durations, but sustained loads above 1.5A require careful attention to PCB copper area and ambient temperature to avoid thermal shutdown.
Does the LTC3526EDC#TRMPBF require external feedback resistors to set output voltage?
No. The LTC3526EDC#TRMPBF features a factory-trimmed internal feedback divider that fixes the output voltage at 5V ±4%. The FB pin is not connected in standard operation and must remain unconnected per the datasheet - no external resistors are needed or supported.
Can the LTC3526EDC#TRMPBF operate from a single alkaline cell?
Yes. The LTC3526EDC#TRMPBF supports an input voltage range of 1.8V to 5.5V, making it compatible with a single alkaline cell (1.5V nominal, down to ~0.9V under load). However, reliable startup requires ≥1.8V; operation below this threshold is not guaranteed, and brown-out protection disables switching.
What package type and thermal characteristics does the LTC3526EDC#TRMPBF use?
The LTC3526EDC#TRMPBF uses a 10-lead 3mm × 2mm DFN package with an exposed thermal pad. Its θJA is 85°C/W on a 2-layer board with 1in² copper, enabling 1.5A operation up to +60°C ambient without forced airflow - critical for sealed portable enclosures.
How does Burst Mode® operation improve efficiency in the LTC3526EDC#TRMPBF?
Burst Mode® operation in the LTC3526EDC#TRMPBF reduces switching losses at light loads by skipping pulses while maintaining regulation. This extends efficiency above 85% down to 100µA output current, significantly increasing battery life in intermittently active devices like wireless sensors or wearables.
LTC3526EDC#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):
- 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)
LTC3526EDC#TRMPBF FAQ
1.How can I place an order for LTC3526EDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3526EDC#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 LTC3526EDC#TRMPBF reliable?
The price and inventory of LTC3526EDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3526EDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3526EDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3526EDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3526EDC#TRMPBF?
LTC3526EDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3526EDC#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 LTC3526EDC#TRMPBF?
For technical support, including LTC3526EDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3526EDC#TRMPBF requirements.
6.How does Aetrix verify that LTC3526EDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3526EDC#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 LTC3526EDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3526EDC#TRMPBF?
All LTC3526EDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3526EDC#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 LTC3526EDC#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3526EDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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