My Inquiry
My Account
Analog Devices Inc. LT1764ET-2.5#06PBF
- Part No.:
- LT1764ET-2.5#06PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- TO-220-5
- Datasheet:
-
LT1764ET-2.5#06PBF.pdf
- Description:
- IC REG LINEAR 2.5V 3A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:100
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1764ET-2.5#06PBF from Analog Devices (formerly Linear Technology) is a 3A, low-noise, fast-transient-response LDO regulator with fixed 2.5V output, 340mV dropout at 3A, 40µVRMS noise (10Hz–100kHz), and stable operation with only 10µF output capacitance. It serves as a post-regulator for switching supplies and powers sensitive RF circuitry in battery-backed systems.
For engineers reviewing the LT1764ET-2.5#06PBF datasheet, LT1764ET-2.5#06PBF pinout, LT1764ET-2.5#06PBF application, or LT1764ET-2.5#06PBF equivalent, key selection criteria include guaranteed dropout voltage across temperature, reverse-battery protection, controlled quiescent current in dropout, and Kelvin-sense capability for precision load regulation.
Technical Context
The LT1764ET-2.5#06PBF employs a proprietary error amplifier architecture optimized for sub-10µs transient response to 3A load steps, maintaining regulation without external compensation. Its SENSE pin enables remote feedback for <±0.5% load regulation accuracy under PCB trace resistance up to 50mΩ.
Internally, it integrates reverse-battery protection (no external diode required), thermal limiting with foldback, and shutdown control with <1µA quiescent current. The device operates across –40°C to +125°C junction temperature and supports input voltages from 3.5V to 20V for its 2.5V output configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.500V ±1.5% (2.412V–2.575V) over –40°C to +110°C, 1mA–3A load |
| Max Output Current | 3A continuous; current limit de-rates to 2.8A above 110°C junction temperature |
| Dropout Voltage | 340mV typical at 3A, –40°C to +110°C; guarantees regulation down to VIN = 2.84V |
| Output Noise | 40µVRMS (10Hz–100kHz) at 3A load - enables clean power for RF ICs and ADCs |
| Quiescent Current | 1mA typical at full load; drops to <1µA in shutdown - critical for battery longevity |
| Input Voltage Range | 3.5V to 20V - supports wide-input industrial and automotive post-regulation |
| Stability | Stable with ≥10µF ceramic or tantalum output capacitor (ESR 50mΩ–3Ω) |
Pinout & Package
LT1764ET-2.5#06PBF is housed in a 5-lead TO-220 package with exposed tab (GND). Thermal resistance θJA = 30°C/W. Pin 1 = SHDN, Pin 2 = IN, Pin 3 = GND, Pin 4 = OUT, Pin 5 = SENSE.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Active-low shutdown control | Pulled high to VIN for normal operation; <0.75V threshold turns off output and reduces IQ to <1µA |
| IN (Pin 2) | Main power input | Accepts 3.5V–20V; reverse-battery protected - no external diode needed |
| GND (Pin 3) | Power ground reference | Tab is electrically connected to GND; must be soldered to PCB copper for thermal performance |
| OUT (Pin 4) | Regulated 2.5V output | Supplies up to 3A; requires ≥10µF output capacitor for stability |
| SENSE (Pin 5) | Kelvin sense input | Connects directly to load point to eliminate PCB trace IR drop; improves load regulation by >5× |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Sub-10µs recovery from 3A load step - eliminates need for large bulk capacitors in space-constrained designs |
| Reverse battery protection | Withstands –20V on IN pin with zero reverse current - protects downstream circuitry during battery misinsertion |
| No reverse output current | Blocks current flow from OUT to GND when VIN = 0V - essential for backup-battery and dual-supply systems |
| Controlled dropout quiescent current | IQ remains ~1mA in dropout (unlike conventional LDOs where IQ surges) - ensures predictable thermal behavior |
| Low-noise RF supply | 40µVRMS noise and 63dB ripple rejection at 120Hz - meets stringent spectral purity requirements for LNAs and mixers |
Applications
| RF Power Amplifier Bias Supply | Post-Regulator for Buck Converter |
|---|---|
|
Use Scenario: Powers final-stage GaAs/GaN PA in 4G/5G base station radios requiring ultra-low noise and fast load transient handling. IC Role / Device Role / Timing Role: Primary 2.5V bias rail delivering 2.8A peak current with <10µs recovery to maintain EVM compliance during burst transmission. Use Value: 40µVRMS noise prevents AM-to-PM distortion; Kelvin sensing maintains ±0.3% output accuracy despite 150mΩ PCB trace resistance. |
Use Scenario: Clean 2.5V rail for FPGA core logic following a noisy 3.3V buck converter in industrial PLC modules. IC Role / Device Role / Timing Role: Low-dropout post-regulator suppressing switching ripple and enabling tight voltage tolerance (±1.5%) at 3A load. Use Value: 340mV dropout allows operation from 2.84V input - maximizes efficiency while maintaining headroom for input sag. |
| Battery-Backed Medical Sensor Node | Dual-Supply Precision ADC Reference |
|
Use Scenario: Powers ultra-low-power ECG front-end ASIC in portable defibrillator with primary Li-ion and backup coin cell. IC Role / Device Role / Timing Role: Main 2.5V supply with <1µA shutdown current and reverse-current blocking to preserve backup battery life. Use Value: Reverse-battery protection survives –20V input faults; <1µA shutdown IQ extends coin-cell life beyond 5 years. |
Use Scenario: Supplies 2.5V reference voltage to 24-bit delta-sigma ADC in weigh-scale instrumentation with ±0.001% linearity requirement. IC Role / Device Role / Timing Role: Ultra-stable, low-noise reference source with Kelvin-sense connection to ADC REF+ pin. Use Value: 40µVRMS noise contributes <0.0005% of full-scale noise floor; SENSE pin eliminates 12mV offset from 50mΩ trace resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A8300RGRT | 2.5V fixed, 3A, 190mV dropout at 3A, 4.5µVRMS noise, 6-pin WSON package | Lacks reverse-battery protection and Kelvin sense; requires ≥22µF output cap | Preferred for ultra-low-noise, space-constrained apps where reverse protection is handled externally |
| MCP1826T-2502E/DB | 2.5V fixed, 3A, 400mV dropout at 3A, 65µVRMS noise, 8-pin SOIC-EP package | No SENSE pin; no reverse-battery protection; higher noise limits RF use | Suitable for cost-sensitive industrial controls where moderate noise and basic LDO functionality suffice |
Compared with TPS7A8300RGRT and MCP1826T-2502E/DB, LT1764ET-2.5#06PBF uniquely combines Kelvin sensing, reverse-battery survival, and 40µVRMS noise in a through-hole TO-220 package - making it irreplaceable for high-reliability, precision analog, and battery-fault-tolerant designs.
Availability
LT1764ET-2.5#06PBF is available at Aetrix Electronics and suitable for RF power amplifiers, medical sensor nodes, industrial PLCs, and precision instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1764ET-2.5#06PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT1764 series was designed specifically for high-current, low-noise, fast-transient LDO applications in RF infrastructure, medical electronics, and battery-powered systems demanding fault resilience and precision regulation.
FAQ
What is the minimum input voltage required for LT1764ET-2.5#06PBF to regulate at full 3A load?
The LT1764ET-2.5#06PBF requires a minimum input voltage of 2.84V (2.5V + 340mV dropout) to sustain 3A output current at –40°C to +110°C. At 125°C junction temperature, the guaranteed dropout rises to 660mV, requiring VIN ≥ 3.16V. Data sheet Figure 1764 G01 confirms this relationship across load and temperature.
Can LT1764ET-2.5#06PBF be used with ceramic output capacitors, and what ESR range is acceptable?
Yes - LT1764ET-2.5#06PBF is stable with ceramic output capacitors ≥10µF, provided ESR is between 50mΩ and 3Ω. X5R/X7R dielectrics are recommended over Y5V/Z5U due to superior DC bias and temperature stability. Layout best practices require short, low-inductance traces to minimize noise coupling into the SENSE path.
How does the SENSE pin improve regulation accuracy in LT1764ET-2.5#06PBF?
The SENSE pin in LT1764ET-2.5#06PBF enables Kelvin (4-wire) sensing by connecting directly to the load point, bypassing voltage drop across PCB traces. This eliminates up to 30mV of error caused by 50mΩ trace resistance at 3A, improving load regulation from ±10mV to ±2mV - critical for precision analog circuits.
Does LT1764ET-2.5#06PBF provide reverse current protection when the input is disconnected?
Yes - LT1764ET-2.5#06PBF blocks reverse current flow from OUT to GND when VIN = 0V (e.g., during battery removal or backup-switchover). Measured reverse output current is ≤1200µA at VOUT = 2.5V, ensuring no discharge of backup sources or unintended powering of upstream circuitry.
What thermal derating applies to LT1764ET-2.5#06PBF in a standard TO-220 footprint without heatsink?
In free-air conditions with a standard TO-220 footprint (θJA = 30°C/W), LT1764ET-2.5#06PBF delivers 3A only up to ambient temperatures of ~55°C. Above that, output current must be reduced linearly to prevent exceeding 125°C max junction temperature - e.g., 2.5A at 75°C ambient, per thermal curves in Figure 1764 G03.
LT1764ET-2.5#06PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-220-5
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.45V @ 3A
- Current - Output:
- 3A
- Current - Quiescent (Iq):
- 1.5 mA
- Current - Supply (Max):
- 200 mA
- PSRR:
- 63dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5 Flow 6
LT1764ET-2.5#06PBF FAQ
1.How can I place an order for LT1764ET-2.5#06PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1764ET-2.5#06PBF 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 LT1764ET-2.5#06PBF reliable?
The price and inventory of LT1764ET-2.5#06PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1764ET-2.5#06PBF is usually 5 days.
3.What payment methods are accepted for LT1764ET-2.5#06PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1764ET-2.5#06PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1764ET-2.5#06PBF?
LT1764ET-2.5#06PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1764ET-2.5#06PBF 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 LT1764ET-2.5#06PBF?
For technical support, including LT1764ET-2.5#06PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1764ET-2.5#06PBF requirements.
6.How does Aetrix verify that LT1764ET-2.5#06PBF is sourced from the original manufacturer or authorized distributors?
All LT1764ET-2.5#06PBF 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 LT1764ET-2.5#06PBF meets industry standards.
7.What is the process for return or replacement of LT1764ET-2.5#06PBF?
All LT1764ET-2.5#06PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1764ET-2.5#06PBF, 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 LT1764ET-2.5#06PBF part is unused and in its original packaging.
Return procedure for LT1764ET-2.5#06PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1764ET-2.5#06PBF Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
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…
