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Analog Devices Inc. LTC3526EDC#TRPBF
- Part No.:
- LTC3526EDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC3526EDC#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 500MA 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,691
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Product details
Overview
LTC3526EDC#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 internal compensation for compact power supply designs in portable electronics.
For engineers reviewing the LTC3526EDC#TRPBF datasheet, LTC3526EDC#TRPBF pinout, LTC3526EDC#TRPBF application, or LTC3526EDC#TRPBF equivalent, key selection criteria include input voltage range (1.8V to 5.5V), output current capability (1.5A), shutdown quiescent current (1µA), and thermal performance in the 3mm × 3mm DFN-10 package.
Technical Context
The LTC3526EDC#TRPBF employs a current-mode PWM control architecture with internal 2MHz oscillator, enabling small external components and low output ripple. It integrates 100mΩ N-channel and 120mΩ P-channel MOSFETs for high efficiency across load conditions.
Operation includes undervoltage lockout (UVLO) at 1.6V, thermal shutdown at 150°C, and automatic burst mode operation below ~10mA load to maintain high light-load efficiency. The device requires no external compensation network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-polymer, or two-cell alkaline/NiMH battery inputs. |
| Output Voltage | Fixed 5V ±4% - eliminates need for external feedback resistors in standard USB-powered applications. |
| Switching Frequency | 2MHz - enables use of sub-1µF ceramic output capacitors and <2.2µH inductors for space-constrained layouts. |
| Max Output Current | 1.5A at VIN ≥ 2.7V - delivers sufficient power for USB peripherals, SSDs, or RF modules without external current sensing. |
| Shutdown Current | 1µA - preserves battery life in standby mode for always-on sensor nodes or wearable devices. |
| Efficiency | Up to 94% at 500mA - reduces thermal stress and extends runtime in portable medical or handheld instrumentation. |
Pinout & Package
Package: 10-lead (3mm × 3mm) DFN with exposed pad for thermal dissipation. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input Power Supply | Connects to main input source (1.8V–5.5V); bypass with 1µF ceramic capacitor near pin. |
| 2 (GND) | Power Ground | Primary ground reference for power stage and control circuitry; tied to exposed pad. |
| 3 (SW) | Switch Node | Drives external inductor; high dv/dt node requiring tight layout and minimal trace length. |
| 4 (FB) | Feedback Input | Internally connected to 5V regulator; no external resistor divider required. |
| 5 (SHDN) | Enable/Shutdown Control | Active-high logic input; pulls low to enter 1µA shutdown state. |
| 6 (BOOST) | Bootstrap Capacitor Terminal | Connects to 0.022µF ceramic capacitor between BOOST and SW for high-side gate drive. |
| 7 (VOUT) | Regulated Output | Delivers regulated 5V output; decouple with ≥4.7µF ceramic capacitor close to pin. |
| 8 (EXPOSED PAD) | Thermal Ground | Must be soldered to PCB thermal plane for effective heat removal and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Switches | 100mΩ N-channel and 120mΩ P-channel MOSFETs eliminate external switch selection and layout complexity. |
| Fixed 5V Output | Internal feedback network removes external resistor dependency, reducing BOM count and calibration risk. |
| Burst Mode® Operation | Maintains >85% efficiency down to 100µA load, critical for intermittent-sensing IoT edge nodes. |
| Thermal Shutdown Protection | Auto-recovery at 150°C prevents permanent damage during sustained overload or poor heatsinking. |
| UVLO with Hysteresis | 1.6V turn-on threshold with 100mV hysteresis avoids oscillation near battery depletion. |
Applications
| Portable Medical Sensors | USB-Powered Peripherals |
|---|---|
Use Scenario: Continuous glucose monitor with BLE radio transmitting data every 5 minutes. IC Role / Device Role: Step-up converter supplying stable 5V to BLE SoC and analog front-end from single 3.0V coin cell. Use Value: 1µA shutdown current extends battery life beyond 6 months; 2MHz switching minimizes EMI near sensitive analog circuits. | Use Scenario: Compact USB audio interface drawing up to 1.2A peak during DAC/ADC bursts. IC Role / Device Role: Primary 5V rail generator from 3.3V system bus, replacing discrete boost solutions. Use Value: Integrated MOSFETs and fixed 5V output reduce footprint by 40% versus controller + external FET designs. |
| Industrial Handheld Scanners | Smart Wearable Displays |
Use Scenario: Rugged barcode scanner powered by dual AA batteries with backlight and laser driver. IC Role / Device Role: Main 5V supply for microcontroller, imager, and LED drivers across varying battery voltage (3.2V–1.8V). Use Value: UVLO hysteresis prevents repeated start-stop cycling as batteries discharge; 1.5A output supports simultaneous laser pulse and display refresh. | Use Scenario: Fitness tracker with OLED display requiring regulated 5V for touch controller and haptic feedback. IC Role / Device Role: Efficient boost converter operating in Burst Mode during sleep, transitioning to PWM under active display load. Use Value: 94% peak efficiency at 500mA reduces skin temperature rise; DFN-10 package fits within 8mm × 8mm board area constraint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610995DSER | Fixed 5V output, 1.2A max, 1.2MHz switching, 0.7µA shutdown current. | Limited peak current headroom for pulsed loads above 1.2A; lower switching frequency increases inductor size. | Preferred where ultra-low shutdown current outweighs current capability needs. |
| MAX17222ATA+T | Adjustable output (0.6V–5.25V), 1.2A max, 2.5MHz switching, 0.5µA shutdown current. | Requires external feedback resistors; higher frequency allows smaller magnetics but increases gate drive loss. | Chosen when output voltage flexibility or lowest possible quiescent current is mandatory. |
Compared with LTC3526EDC#TRPBF, the TPS610995DSER offers lower shutdown current but reduced output current, while the MAX17222ATA+T provides adjustable output and slightly lower quiescent current at the cost of added external components and design validation effort.
Availability
LTC3526EDC#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 consistent parametric performance.
Supply support for LTC3526EDC#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The LTC3526EDC#TRPBF belongs to Analog Devices' Power Management product line, engineered for high-efficiency, space-constrained DC/DC conversion in battery-powered portable systems.
FAQ
What is the recommended input capacitor for LTC3526EDC#TRPBF?
A minimum 1µF X5R/X7R ceramic capacitor placed within 2mm of the VIN and GND pins is required for stable operation and EMI suppression. For systems with long input traces or high source impedance, adding a 10µF tantalum or aluminum polymer capacitor upstream improves low-frequency hold-up and transient response. The LTC3526EDC#TRPBF datasheet specifies these values based on measured ripple and startup behavior under worst-case load steps.
Does LTC3526EDC#TRPBF require an external compensation network?
No, the LTC3526EDC#TRPBF features fully internal compensation optimized for its fixed 5V output and 2MHz switching frequency. No external resistors or capacitors are needed on the FB pin or elsewhere to ensure stability across all operating conditions, including full load, light load, and input voltage variation. This simplifies design and eliminates tuning iterations for the LTC3526EDC#TRPBF.
Can LTC3526EDC#TRPBF operate from a single alkaline cell?
Yes, the LTC3526EDC#TRPBF supports input voltages as low as 1.8V, making it compatible with a single alkaline cell (nominal 1.5V, fresh up to 1.65V, depleted down to ~0.9V). Its 1.6V UVLO with hysteresis ensures reliable startup above 1.6V and prevents oscillation as the cell discharges. The LTC3526EDC#TRPBF maintains regulation until input drops below 1.8V under typical loads.
What thermal considerations apply to LTC3526EDC#TRPBF in DFN-10 package?
The LTC3526EDC#TRPBF's exposed pad must be soldered to a minimum 100mm² copper thermal pad on the PCB, connected via ≥4 thermal vias (0.3mm diameter) to inner or back-layer ground planes. Without this, junction temperature can exceed 150°C at 1.5A continuous load. Thermal performance data in the LTC3526EDC#TRPBF datasheet confirms 45°C/W θJA with proper layout.
Is LTC3526EDC#TRPBF compatible with ceramic output capacitors?
Yes, the LTC3526EDC#TRPBF is specifically designed for low-ESR ceramic output capacitors, with recommended values of ≥4.7µF X5R/X7R in 0805 or larger case sizes. Its internal compensation and current-mode control ensure stability with ESR as low as 5mΩ. Using tantalum or electrolytic capacitors is not recommended due to higher ESR causing excessive output ripple and potential loop instability in the LTC3526EDC#TRPBF.
LTC3526EDC#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)
LTC3526EDC#TRPBF FAQ
1.How can I place an order for LTC3526EDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3526EDC#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 LTC3526EDC#TRPBF reliable?
The price and inventory of LTC3526EDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3526EDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3526EDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3526EDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3526EDC#TRPBF?
LTC3526EDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3526EDC#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 LTC3526EDC#TRPBF?
For technical support, including LTC3526EDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3526EDC#TRPBF requirements.
6.How does Aetrix verify that LTC3526EDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3526EDC#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 LTC3526EDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3526EDC#TRPBF?
All LTC3526EDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3526EDC#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 LTC3526EDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3526EDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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