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Analog Devices Inc. LTC3026EMSE-1#TRPBF
- Part No.:
- LTC3026EMSE-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3026EMSE-1#TRPBF.pdf
- Description:
- IC REG LIN POS ADJ 1.5A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
LTC3026EMSE-1#TRPBF from Analog Devices (formerly Linear Technology) is a very low dropout (VLDO™) linear regulator optimized for ultra-low-input-voltage operation down to 1.14V, delivering up to 1.5A output current with only 100mV typical dropout at full load. It features an internal NMOS pass device in source-follower configuration, external 5V BIAS supply requirement, and 0.4V reference voltage enabling adjustable outputs from 0.4V to 2.6V - ideal for post-regulation of buck converters powering modern low-voltage microprocessors.
For engineers reviewing the LTC3026EMSE-1#TRPBF datasheet, LTC3026EMSE-1#TRPBF pinout, LTC3026EMSE-1#TRPBF application, or LTC3026EMSE-1#TRPBF equivalent, key selection considerations include its 100mV dropout at 1.5A, dual-ground architecture (GND/GNDS), BIAS-supply dependency, thermal shutdown behavior, and compatibility with ≥10μF ceramic output capacitors in space-constrained industrial and embedded systems.
Technical Context
The LTC3026EMSE-1#TRPBF implements a high-gain (270μV/A referred to ADJ) error amplifier driving an NMOS source-follower pass transistor, enabling fast transient response without sacrificing dropout performance. Its BIAS pin requires a stable 5V supply (4.5V–5.5V) to power control circuitry while load current flows directly from IN to OUT - decoupling bias consumption from output power path.
It integrates undervoltage lockout on BIAS (4.25V typ. threshold), reverse input current protection, soft-start (200μs reference ramp), open-drain Power Good (PG) with 2% hysteresis referenced to VADJ, and overtemperature shutdown that cycles at ~150°C junction temperature. The GNDS pin provides Kelvin sensing for improved regulation accuracy under PCB trace resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.14V to 5.5V - enables direct regulation from single-cell LiFePO₄ or boosted 1.2V supplies |
| Output Current | Up to 1.5A continuous - sufficient for core logic rails in FPGA/CPU subsystems |
| Dropout Voltage | 100mV at IOUT = 1.5A - minimizes power loss and heat generation at low VIN–VOUT differentials |
| Adjustable Output | 0.4V to 2.6V via resistor divider - supports sub-1V digital core voltages with 0.4V reference |
| BIAS Supply | Required 5V ±0.5V - powers internal LDO circuitry independently of IN/OUT paths |
| Output Noise | 110μVRMS (10Hz–100kHz) - suitable for noise-sensitive analog/RF subsystems |
| Quiescent Current | 95μA at VIN = 1.5V - enables long battery life in always-on monitoring applications |
Pinout & Package
Package: 10-Lead Plastic MSOP with exposed thermal pad (pin 11 = GND). Requires soldering of exposed pad to PCB ground plane for θJA = 40°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (1,2) | Main input supply connection | Directly sources 1.5A load current; must be bypassed locally with 0.1–4.7μF capacitor |
| GND (3,11) | Power ground and thermal sink | Exposed pad (pin 11) must be soldered to PCB ground plane for thermal management |
| GNDS (4) | Ground sense reference | Must be tied externally to GND pin to compensate for PCB trace IR drop |
| BIAS (5) | Bias supply input | Requires regulated 5V ±0.5V; bypass with 1μF low-ESR ceramic capacitor |
| SHDN (6) | Active-low shutdown control | Pull low to disable regulator; draws <1μA in shutdown; must not float |
| PG (7) | Open-drain Power Good flag | High-Z when VOUT ≥ 93% of target; low-Z when <91% or during UVLO/shutdown |
| ADJ (8) | Error amplifier reference input | Serves 0.4V reference; bias current <100nA; sensitive to stray capacitance (<10pF) |
| OUT (9,10) | Regulated output terminals | Deliver up to 1.5A; require ≥10μF ceramic output capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout operation | 100mV at 1.5A enables efficient regulation from 1.2V–1.5V inputs (e.g., LiFePO₄ or buck converter outputs) |
| Dual-ground architecture | Separate GND (power/thermal) and GNDS (Kelvin sense) pins reduce regulation error from PCB trace resistance |
| BIAS-supplied control circuitry | 5V BIAS rail isolates gate drive and error amplifier power from main current path, improving PSRR near dropout |
| Reverse input current protection | Limiting reverse current to ≤16μA prevents backfeeding from higher-voltage auxiliary supplies connected to VOUT |
| Thermal cycling protection | Non-latching thermal shutdown activates at ~150°C and recovers at ~140°C - survives sustained overload without damage |
Applications
| Microprocessor Core Supply | Post-Regulator for Buck Converters |
|---|---|
Use Scenario: Providing clean, low-noise 0.8V–1.2V core voltage to ARM Cortex-A series SoCs in industrial edge controllers. IC Role / Device Role / Timing Role: Final-stage linear regulator ensuring tight DC accuracy and fast transient response during CPU burst loads. Use Value: 100mV dropout allows operation from 1.5V buck output, minimizing power loss; 110μVRMS noise avoids digital timing jitter. | Use Scenario: Tightening output voltage tolerance and reducing ripple from a 1.8V switching regulator powering FPGA I/O banks. IC Role / Device Role / Timing Role: Low-noise post-regulator suppressing switching artifacts and compensating for load-induced droop. Use Value: 270μV/A gain at ADJ enables precise load regulation; PG pin signals valid rail to FPGA configuration logic. |
| Battery-Powered Sensor Node | Low-Voltage Industrial PLC Module |
Use Scenario: Regulating 1.2V for ultra-low-power MCU and RF transceiver from a 1.5V LiFePO₄ cell in wireless sensor networks. IC Role / Device Role / Timing Role: Primary voltage regulator operating across full battery discharge curve (1.5V → 1.14V). Use Value: 1.14V minimum VIN extends usable battery life; 95μA quiescent current preserves standby runtime. | Use Scenario: Generating 2.5V for analog front-end ADCs and DACs in modular I/O cards requiring high PSRR near dropout. IC Role / Device Role / Timing Role: Precision analog supply with Kelvin sensing (GNDS) to reject PCB trace resistance effects. Use Value: GNDS pin eliminates up to 50mV error from 50mΩ trace resistance; 60dB PSRR at 100kHz suppresses switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VLDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3026EDD-1#TRPBF | Same electrical specs but in 3mm × 3mm DFN package with lower θJA (43°C/W) and no MSOP footprint compatibility | Preferred for high-density layouts where board area is constrained and thermal vias to ground plane are feasible | Select when footprint flexibility and thermal performance outweigh MSOP legacy design reuse requirements |
| LT3080-1IMSE#TRPBF | 1.1A output, 300mV dropout, adjustable 0–35.7V via single resistor; no BIAS pin; requires SET resistor instead of ADJ divider | Used where wide output range or parallelability is needed; unsuitable for <1.2V outputs or ultra-low-VIN operation | Choose only if output >1.2V and dropout margin >300mV is acceptable; not a functional substitute for 1.14V–1.5V input cases |
Compared with LTC3026EDD-1#TRPBF, the LTC3026EMSE-1#TRPBF offers identical regulation performance but in a larger MSOP package with better manufacturability in legacy SMT lines; versus LT3080-1IMSE#TRPBF, it delivers superior low-VIN capability and lower dropout but lacks programmable current limit and parallel operation support.
Availability
LTC3026EMSE-1#TRPBF is available at Aetrix Electronics and suitable for industrial automation, battery-powered edge devices, and FPGA power management requiring stable component supply, extended temperature operation (–40°C to 125°C), and RoHS-compliant packaging.
Supply support for LTC3026EMSE-1#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 precision analog and power management portfolio with rigorous qualification standards for industrial and automotive applications.
The LTC3026-1 belongs to Linear's VLDO™ linear regulator family, designed specifically for ultra-low-input-voltage applications where traditional LDOs fail - targeting post-regulation, battery-powered systems, and low-voltage digital core supplies.
FAQ
What is the minimum input voltage required for regulation with LTC3026EMSE-1#TRPBF?
The LTC3026EMSE-1#TRPBF requires a minimum input voltage of 1.14V to maintain regulation, as specified in its absolute maximum ratings and electrical characteristics table. This value assumes the output voltage is set within the 0.4V–2.6V range and accounts for the 100mV typical dropout voltage at full 1.5A load. Operation below 1.14V will result in unregulated output.
Does LTC3026EMSE-1#TRPBF require an external boost converter?
No, the LTC3026EMSE-1#TRPBF does not require or include a boost converter. It is the -1 variant of the LTC3026 family with the internal boost circuit disabled. Instead, it requires an external 5V BIAS supply connected to pin 5 to power its control circuitry, distinguishing it from the standard LTC3026 which uses a switched-capacitor boost to generate internal gate drive voltage.
Can LTC3026EMSE-1#TRPBF operate without the BIAS supply connected?
No, LTC3026EMSE-1#TRPBF cannot operate without the BIAS supply. The BIAS pin (pin 5) must be connected to a stable 4.5V–5.5V source; absence or undervoltage (<4.25V typical) triggers UVLO, forcing the device into shutdown with PG pulled low and OUT disconnected. The BIAS supply is essential for enabling the internal error amplifier and NMOS gate driver.
What is the purpose of the GNDS pin on LTC3026EMSE-1#TRPBF?
The GNDS (Ground Sense) pin on LTC3026EMSE-1#TRPBF provides a Kelvin connection point for the feedback network's ground reference. It must be tied externally to the GND pin (pin 3) to eliminate errors caused by voltage drop across PCB traces between the regulator's power ground and the load ground. This ensures accurate output voltage regulation independent of layout-induced IR losses.
Is LTC3026EMSE-1#TRPBF stable with ceramic output capacitors smaller than 10μF?
No, LTC3026EMSE-1#TRPBF is specified and characterized for stability with ≥10μF ceramic output capacitors having ESR ≤0.05Ω. Using smaller values may cause instability or oscillation due to insufficient phase margin. While the datasheet notes a 5μF minimum for basic functionality, 10μF is the validated minimum for guaranteed stability across temperature and load conditions.
LTC3026EMSE-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 2.6V
- Voltage Dropout (Max):
- 0.25V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LTC3026EMSE-1#TRPBF FAQ
1.How can I place an order for LTC3026EMSE-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3026EMSE-1#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 LTC3026EMSE-1#TRPBF reliable?
The price and inventory of LTC3026EMSE-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3026EMSE-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3026EMSE-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3026EMSE-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3026EMSE-1#TRPBF?
LTC3026EMSE-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3026EMSE-1#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 LTC3026EMSE-1#TRPBF?
For technical support, including LTC3026EMSE-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3026EMSE-1#TRPBF requirements.
6.How does Aetrix verify that LTC3026EMSE-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3026EMSE-1#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 LTC3026EMSE-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3026EMSE-1#TRPBF?
All LTC3026EMSE-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3026EMSE-1#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 LTC3026EMSE-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3026EMSE-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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