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Analog Devices Inc. LT3460ESC6#TRPBF
- Part No.:
- LT3460ESC6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LT3460ESC6#TRPBF.pdf
- Description:
- IC REG BST SEPIC ADJ 300MA SC70
- Quantity:
- Payment:
- Shipping:
Inventory:1,566
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Product details
Overview
LT3460ESC6#TRPBF from Analog Devices (formerly Linear Technology) is a 1.3MHz fixed-frequency step-up DC/DC converter in SC70-6 package, featuring a 300mA integrated switch, 2.5V–16V input range, 38V switch rating, and 1.255V feedback reference-designed for compact 5V-to-12V bias supplies in CCD imaging and TFT-LCD panels.
For engineers reviewing the LT3460ESC6#TRPBF datasheet, LT3460ESC6#TRPBF pinout, LT3460ESC6#TRPBF application, or LT3460ESC6#TRPBF equivalent, key selection criteria include switching frequency stability, output voltage headroom up to 36V, shutdown current <1μA, thermal performance on SC70-6 footprint, and compatibility with low-profile inductors and ceramic capacitors.
Technical Context
The LT3460ESC6#TRPBF employs constant-frequency current-mode control with internal 1.255V reference and ramp compensation, enabling predictable EMI behavior and stable regulation across line/load transients. Its 1.3MHz oscillator ensures minimal external component size while maintaining >60% efficiency at 70mA output.
It integrates a 300mA NPN switch rated to 38V, supports soft-start via RC filtering on SHDN, and uses peak-current sensing with internal slope compensation to prevent subharmonic oscillation in continuous conduction mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3MHz - Enables use of ≤22μH inductors and ≤1μF ceramic output capacitors for ultra-compact layouts. |
| Input Voltage Range | 2.5V to 16V - Supports single-cell Li-ion (2.7–4.2V), 3.3V/5V rails, and industrial 12V inputs without pre-regulation. |
| Max Output Voltage | 36V - Achieved with external resistor divider; sufficient for CCD bias, XDSL line drivers, and TFT gate drivers. |
| Integrated Switch | 300mA NPN - Delivers 70mA at 12V from 5V input (typical); eliminates need for external transistor in low-power boost applications. |
| Feedback Reference | 1.255V ±1.6% - Sets precise output via R1/R2 divider; enables accurate 5V, 12V, 18V, or 36V outputs with standard 1% resistors. |
| Quiescent Current | 1mA - Minimizes standby power loss in battery-backed medical or portable imaging systems. |
| Shutdown Current | <1μA - Ensures negligible battery drain during system sleep modes. |
Pinout & Package
LT3460ESC6#TRPBF is housed in a 6-lead plastic SC70 package (JEDEC MO-220 variant), 1.8mm × 2.2mm × 1.0mm profile, with exposed pad not present (unlike DFN variants). Thermal resistance θJA = 270°C/W on PCB over ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Node | Connects to inductor and Schottky diode anode; high dv/dt node requiring minimized trace length to reduce EMI. |
| GND (Pin 2) | Power Ground | Main return path for switch current and IC bias; must tie directly to local ground plane for thermal and noise control. |
| FB (Pin 3) | Feedback Input | Senses divided output voltage; internal 1.255V reference sets VOUT = 1.255V × (1 + R1/R2); sensitive to noise-keep trace short and away from SW. |
| SHDN (Pin 4) | Enable/Soft-Start | Active-high logic input; ≥1.5V enables operation; ≤0.4V disables with <1μA leakage; RC filter adds controlled startup ramp. |
| VIN (Pin 6) | Input Supply | Accepts 2.5–16V; requires local 4.7μF ceramic bypass capacitor placed adjacent to pin for transient current delivery. |
| NC (Pin 5) | No-Connect | Internally unconnected; recommended to tie to GND for improved thermal dissipation and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.3MHz switching | Enables consistent EMI filtering design and eliminates external frequency programming components. |
| 38V-rated integrated switch | Supports output voltages up to 36V without external FET-ideal for high-voltage bias generation in optical sensors. |
| Low 1mA quiescent current | Extends battery life in portable diagnostic equipment where intermittent high-voltage bias is required. |
| SC70-6 footprint | Provides 40% smaller board area vs. SOT-23-5 while retaining hand-solderability and reflow compatibility. |
| Internal soft-start via SHDN | Prevents inrush current and output overshoot using simple RC network-no dedicated SS pin needed. |
Applications
| CCD Bias Supply | TFT-LCD Gate Driver |
|---|---|
Use Scenario: Generating stable 18V–24V bias for charge-coupled device (CCD) image sensors in portable endoscopes and digital radiography systems. IC Role / Device Role / Timing Role: Primary step-up regulator delivering regulated high-voltage bias with low ripple and fast load transient response. Use Value: Enables clean analog signal capture by minimizing switching noise coupling into sensitive pixel readout paths. | Use Scenario: Providing 20V–30V gate-on voltage for active-matrix LCD source/gate drivers in handheld medical monitors and industrial HMIs. IC Role / Device Role / Timing Role: Compact, high-efficiency boost converter powering gate driver ICs from a shared 3.3V or 5V system rail. Use Value: Eliminates need for discrete transformer-based solutions-reducing BOM count and board space by >50%. |
| XDSL Line Power | Battery-Backed Diagnostic Equipment |
Use Scenario: Delivering isolated 12V/24V auxiliary power for DSL line interface circuits in residential gateways and VoIP adapters. IC Role / Device Role / Timing Role: Non-isolated boost stage supplying bias to line driver amplifiers and hybrid couplers. Use Value: Meets stringent EMI Class B limits due to fixed 1.3MHz frequency and low-noise current-mode architecture. | Use Scenario: Maintaining critical 5V or 12V supply during AC mains failure in point-of-care ultrasound or ECG units using Li-ion backup. IC Role / Device Role / Timing Role: Low-quiescent-current boost converter sustaining microcontroller and sensor bias during brownout conditions. Use Value: Achieves >100-hour hold-up time from single-cell Li-ion with <1μA shutdown current and efficient light-load operation. |
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 |
|---|---|---|---|
| LT3461ESC6#TRPBF | Includes integrated 38V Schottky diode; same 1.3MHz freq, 300mA switch, but higher IQ (2.8mA). | Better suited for space-constrained designs eliminating external diode; less optimal for ultra-low-IQ battery apps. | Select LT3461ESC6#TRPBF when board area is critical and diode integration simplifies layout; verify thermal rise with integrated diode losses. |
| LTC3400ES5#TRPBF | Synchronous 600mA boost; 1.2MHz; lower IQ (19μA); max VOUT = 5V only; different package (SOT-23-5). | Only suitable for low-voltage boost (≤5V); incompatible for 12V+ outputs required by CCD/TFT applications. | Choose LTC3400ES5#TRPBF only for sub-5V boost needs; reject for any LT3460ESC6#TRPBF use case requiring >5V output. |
Compared with LT3460ESC6#TRPBF, LT3461ESC6#TRPBF trades ultra-low quiescent current for diode integration and reduced component count, while LTC3400ES5#TRPBF offers superior light-load efficiency but lacks the high-voltage capability essential for imaging and display bias rails.
Availability
LT3460ESC6#TRPBF is available at Aetrix Electronics and suitable for CCD bias supply, TFT-LCD gate driver, and XDSL line power applications requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for LT3460ESC6#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, datasheet archives, and application engineering for legacy Linear parts including the LT3460 family.
The LT3460 series was designed specifically for compact, high-voltage boost conversion in imaging, display, and telecom infrastructure-emphasizing small footprint, predictable EMI, and robust 38V switch capability.
FAQ
What is the maximum achievable output voltage using LT3460ESC6#TRPBF?
The LT3460ESC6#TRPBF supports output voltages up to 36V, limited by its 38V-rated internal switch and external resistor divider. This is confirmed in the Absolute Maximum Ratings table and validated in typical applications like the 12V-to-36V and 5V-to-36V boost circuits shown in the datasheet. Output accuracy depends on FB reference tolerance (±1.6%) and resistor matching.
Can LT3460ESC6#TRPBF operate from a single Li-ion cell?
Yes, LT3460ESC6#TRPBF operates from 2.5V minimum input, making it compatible with discharged single-cell Li-ion (down to ~2.7V). The datasheet includes a verified "Li-Ion to 18V Step-Up Converter" circuit (Figure TA08) using LT3460-1, and LT3460ESC6#TRPBF shares identical input specs-ensuring reliable start-up and regulation across the full 2.7–4.2V battery range.
Does LT3460ESC6#TRPBF require an external Schottky diode?
Yes, LT3460ESC6#TRPBF requires an external Schottky diode (e.g., CMDSH2-3) connected between SW and VOUT, as confirmed in all typical application schematics (Figures F01, F02, TA01–TA08). Unlike the LT3461 variant, LT3460ESC6#TRPBF does not integrate a diode-its SW pin drives the external diode's anode.
What is the thermal performance of LT3460ESC6#TRPBF in SC70-6 package?
LT3460ESC6#TRPBF has θJA = 270°C/W when mounted on a PCB over ground plane, per the SC6 package data. At 70mA output (12V from 5V), typical power dissipation is ~150mW, resulting in ~40°C junction rise above ambient-well within the 125°C TJMAX limit. Layout adherence to recommended copper pour and NC grounding is critical to achieve this rating.
How does the SHDN pin function on LT3460ESC6#TRPBF?
The SHDN pin on LT3460ESC6#TRPBF is an active-high enable with built-in soft-start: ≥1.5V enables operation, ≤0.4V disables with <1μA leakage. When enabled, an RC filter (e.g., 47kΩ + 47nF) on SHDN generates a controlled voltage ramp, limiting inrush current and preventing output overshoot-eliminating need for external soft-start circuitry.
LT3460ESC6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.255V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 300mA (Switch)
- Frequency - Switching:
- 1.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
LT3460ESC6#TRPBF FAQ
1.How can I place an order for LT3460ESC6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3460ESC6#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 LT3460ESC6#TRPBF reliable?
The price and inventory of LT3460ESC6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3460ESC6#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3460ESC6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3460ESC6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3460ESC6#TRPBF?
LT3460ESC6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3460ESC6#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 LT3460ESC6#TRPBF?
For technical support, including LT3460ESC6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3460ESC6#TRPBF requirements.
6.How does Aetrix verify that LT3460ESC6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3460ESC6#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 LT3460ESC6#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3460ESC6#TRPBF?
All LT3460ESC6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3460ESC6#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 LT3460ESC6#TRPBF part is unused and in its original packaging.
Return procedure for LT3460ESC6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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