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Analog Devices Inc. LT3464ETS8#TRPBF
- Part No.:
- LT3464ETS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LT3464ETS8#TRPBF.pdf
- Description:
- IC REG BOOST ADJ 85MA TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,446
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Product details
Overview
LT3464ETS8#TRPBF from Analog Devices (formerly Linear Technology) is a micropower step-up DC/DC converter with integrated Schottky diode and PNP output disconnect, housed in an 8-lead TSOT-23 package. It delivers up to 34V output from 2.3V–10V input, features 115mA switch current limit, 25µA active quiescent current, and internal 1.25V reference with external override capability via CTRL pin. It is used in LCD/OLED panel bias supplies requiring low-noise, high-voltage, battery-efficient operation.
For engineers reviewing the LT3464ETS8#TRPBF datasheet, LT3464ETS8#TRPBF pinout, LT3464ETS8#TRPBF application, or LT3464ETS8#TRPBF equivalent, key selection criteria include its 36V rugged switch rating, integrated output disconnect for load isolation, fixed off-time control architecture, and compatibility with ceramic capacitors and chip inductors in space-constrained portable designs.
Technical Context
The LT3464ETS8#TRPBF employs a constant off-time hysteretic control scheme combined with Burst Mode® operation to maintain high efficiency across ultra-low load currents (down to µA range). Its internal 115mA, 36V NPN switch and integrated Schottky diode eliminate external power components while enabling compact boost topologies.
It integrates a PNP-based output disconnect circuit that provides short-circuit protection and <0.5µA shutdown current, with VCE(SAT) tightly controlled across 200µA–10mA load range. The CTRL pin allows dynamic adjustment of the feedback reference from 0V to 1.25V, enabling real-time output voltage tuning for display contrast or dimming control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 10V - supports single-cell Li-ion, multi-cell alkaline, and USB-powered systems without pre-regulation. |
| Max Output Voltage | 34V - enables direct biasing of OLED, TFT-LCD, and electrophoretic displays without external voltage multipliers. |
| Switch Current Limit | 115mA (typ) - sets maximum energy per switching cycle; determines inductor sizing and peak output current capability. |
| Quiescent Current | 25µA (active), 0.5µA (shutdown) - extends battery life in always-on or low-duty-cycle portable instrumentation. |
| Feedback Reference | 1.25V internal, adjustable down to 0V via CTRL pin - allows programmable output voltage without changing resistor divider. |
| Package | 8-lead TSOT-23 (1mm height) - footprint-compatible with SOT-23-8 but thinner; enables <40mm² total solution size with chip inductor. |
| Output Disconnect | Integrated PNP with 25mA current limit and <300mV VCE(SAT) at 10mA - isolates load during shutdown and prevents backfeed into input rail. |
Pinout & Package
LT3464ETS8#TRPBF is packaged in an 8-lead TSOT-23 (ThinSOT™), measuring 2.9mm × 1.6mm × 1.0mm max height, with exposed pad not electrically connected. This low-profile plastic package supports reflow soldering and meets JEDEC MO-193 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CTRL (1) | Auxiliary reference override input | Accepts 0–1.25V to set FB reference; >1.5V enables internal 1.25V reference; enables dynamic output voltage control. |
| FB (2) | Feedback node input | Regulated to 1.25V (or CTRL voltage); connects to resistor divider tap; determines output voltage accuracy and stability. |
| OUT (3) | PNP collector output | Delivers regulated output to load; bypassed with ≥0.1µF capacitor to CAP or GND; provides short-circuit protection. |
| GND (4) | Power and signal ground | Primary return path; must connect directly to ground plane; feedback resistor ground must tie here exclusively. |
| CAP (5) | PNP emitter & Schottky cathode | Connects to output capacitor; integrates phase-lead capacitance between CAP and FB to reduce ripple. |
| SW (6) | Internal NPN switch collector | High dv/dt node; requires minimal trace area to suppress EMI; connects to inductor and Schottky anode. |
| VIN (7) | Input supply | 2.3–10V input; must be bypassed with ≥1µF ceramic capacitor placed adjacent to pin. |
| SHDN (8) | Shutdown enable | Logic-high (>2.3V) enables operation; logic-low (<0.2V) disables switching and reduces IQ to <0.5µA. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 25µA quiescent current enables >1-year battery life in coin-cell–powered handheld instruments. |
| Integrated output disconnect | PNP-based isolation eliminates need for external MOSFET or diode, reducing BOM count and PCB area. |
| Internal Schottky diode | Eliminates external diode losses and layout complexity; improves efficiency by ~3–5% vs discrete solutions. |
| Adjustable reference via CTRL pin | Enables analog dimming of display bias without microcontroller intervention or DAC. |
| Rugged 36V switch | Supports 34V output with margin; withstands transient overvoltage events common in portable systems. |
| Fixed off-time control | Ensures stable operation across wide input/output ratios and load ranges without compensation network. |
Applications
| OLED Display Bias Supply | LCD Panel VPOS/VNEG Generation |
|---|---|
Use Scenario: Generating ±20V rails from 3.6V Li-ion battery for active-matrix OLED displays in smartwatches. IC Role / Device Role / Timing Role: Step-up converter with output disconnect providing isolated, regulated high-voltage bias while minimizing standby leakage. Use Value: Enables true black levels and wide viewing angles via precise VDD/VSS control; <0.5µA shutdown current preserves battery during sleep mode. | Use Scenario: Powering TFT-LCD source driver ICs requiring +15V and –10V from 5V USB input in portable medical monitors. IC Role / Device Role / Timing Role: Primary positive boost stage in dual-rail charge-pump-assisted bias generator. Use Value: Integrated Schottky and PNP disconnect eliminate external diodes and FETs, reducing solution size by 35% vs discrete design. |
| Digital Camera CCD/CMOS Sensor Bias | Handheld Barcode Scanner HV Supply |
Use Scenario: Supplying 25V bias to CCD vertical shift register in compact digital cameras using 3.3V system rail. IC Role / Device Role / Timing Role: High-efficiency boost converter operating in Burst Mode® to maintain regulation during intermittent sensor readout bursts. Use Value: 115mA switch current limit supports fast charge delivery to sensor capacitive loads; 25µA IQ minimizes idle drain. | Use Scenario: Generating 30V laser diode drive voltage from 3.6V battery in handheld barcode scanners with on-demand activation. IC Role / Device Role / Timing Role: Standby-ready HV supply activated only during scan trigger; SHDN pin synchronized to microcontroller GPIO. Use Value: 0.5µA shutdown current ensures >2-year shelf life; TSOT-23 package fits within 12mm-wide scanner housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1615ETS8#TRPBF | Higher 300mA switch current, 1.2V min input, no integrated Schottky or output disconnect | Suited for higher-current loads (e.g., LED drivers) but requires external diode and load switch | Select when >115mA output current is required and board space permits added discretes. |
| LTC3400ES6#TRPBF | Synchronous rectification, 600mA switch, 0.85V min input, 5V max output, no output disconnect | Optimized for low-input, low-output voltage apps (e.g., USB-to-5V); lacks HV capability and disconnect | Choose for sub-5V boost where efficiency >85% at light loads is critical and HV bias is unnecessary. |
Compared with LT1615ETS8#TRPBF and LTC3400ES6#TRPBF, LT3464ETS8#TRPBF uniquely combines micropower operation, integrated HV Schottky, and PNP output disconnect in a thin 8-lead package-making it the only option for space-constrained, battery-powered display bias where load isolation and <35V output are mandatory.
Availability
LT3464ETS8#TRPBF is available at Aetrix Electronics and suitable for OLED display bias, LCD panel voltage generation, and handheld medical device power management requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for LT3464ETS8#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 full product support, documentation, and manufacturing continuity for all Linear parts including the LT3464 series.
The LT3464 belongs to Linear's micropower DC/DC converter family, designed specifically for ultra-low-power, high-voltage bias generation in portable displays, imaging sensors, and instrumentation where solution size and battery longevity are critical.
FAQ
What is the maximum output voltage achievable with the LT3464ETS8#TRPBF?
The LT3464ETS8#TRPBF supports up to 34V output voltage, limited by its 36V-rated internal switch and output disconnect circuitry. This is confirmed in the Absolute Maximum Ratings table and validated in typical application circuits (e.g., TA03 generating 34V from 8.4V input). Exceeding 34V risks violating the 36V SW and OUT pin ratings and may cause premature failure.
Does the LT3464ETS8#TRPBF require an external Schottky diode?
No, the LT3464ETS8#TRPBF integrates a Schottky diode internally-its anode connects to the SW pin and cathode to the CAP pin. This eliminates the need for an external diode, reduces component count, and improves efficiency by removing forward voltage drop and associated thermal losses in the power path.
How does the CTRL pin function in the LT3464ETS8#TRPBF?
The CTRL pin on the LT3464ETS8#TRPBF serves as an auxiliary reference override input. When held between 0V and 1.25V, it directly sets the FB pin reference voltage, enabling dynamic output voltage adjustment. When tied above 1.5V (e.g., to VIN), it enables the internal 1.25V reference. This feature is used for analog dimming in display bias applications.
What is the purpose of the output disconnect function in the LT3464ETS8#TRPBF?
The output disconnect in the LT3464ETS8#TRPBF uses an integrated PNP transistor to isolate the load from the input during shutdown, preventing backfeed and reducing system-level standby current to <0.5µA. It also provides short-circuit protection with a 25mA current limit, protecting both the IC and downstream circuitry during fault conditions.
Can the LT3464ETS8#TRPBF operate from a 2.3V input supply?
Yes, the LT3464ETS8#TRPBF is specified to operate from 2.3V minimum input voltage, as stated in the Electrical Characteristics table (Minimum Input Voltage = 2.3V typ). It has been validated in application circuits with 2.3V–10V input range, including 3.6V Li-ion and 5V USB sources, maintaining regulation and efficiency across this span.
LT3464ETS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 2.3V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 34V
- Current - Output:
- 85mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LT3464ETS8#TRPBF FAQ
1.How can I place an order for LT3464ETS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3464ETS8#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 LT3464ETS8#TRPBF reliable?
The price and inventory of LT3464ETS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3464ETS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3464ETS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3464ETS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3464ETS8#TRPBF?
LT3464ETS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3464ETS8#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 LT3464ETS8#TRPBF?
For technical support, including LT3464ETS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3464ETS8#TRPBF requirements.
6.How does Aetrix verify that LT3464ETS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3464ETS8#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 LT3464ETS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3464ETS8#TRPBF?
All LT3464ETS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3464ETS8#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 LT3464ETS8#TRPBF part is unused and in its original packaging.
Return procedure for LT3464ETS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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