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Analog Devices Inc. LT3460ES5#TRMPBF
- Part No.:
- LT3460ES5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT3460ES5#TRMPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,717
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Product details
Overview
LT3460ES5#TRMPBF from Analog Devices (formerly Linear Technology) is a 1.3 MHz fixed-frequency step-up DC/DC converter in a 5-lead TSOT-23 package, featuring a 300 mA integrated switch, 1.255 V feedback reference, and operation from 2.5 V to 16 V input. It delivers up to 12 V at 70 mA from a 5 V supply and supports high-voltage boost applications up to 36 V output - commonly used in CCD bias supplies and TFT-LCD panel power.
For engineers reviewing the LT3460ES5#TRMPBF datasheet, LT3460ES5#TRMPBF pinout, LT3460ES5#TRMPBF application, or LT3460ES5#TRMPBF equivalent, key selection criteria include switching frequency stability (1.3 MHz), integrated 300 mA switch rating, SC70/TSOT-23 thermal performance (θJA = 256°C/W in free air), shutdown current (<1 μA), and feedback accuracy (±1.6% over temperature).
Technical Context
The LT3460ES5#TRMPBF employs constant-frequency peak current-mode control with an internal 1.255 V reference and oscillator set to 1.3 MHz. Its PWM comparator compares a ramp-compensated switch-current signal against the error amplifier output, enabling tight line/load regulation without external compensation in basic configurations.
It integrates a 38 V-rated NPN switch with 320 mV typical VCE(SAT) at 250 mA, supports soft-start via RC filtering on SHDN, and uses external resistor divider feedback for programmable output voltage - all within a thermally enhanced 5-lead TSOT-23 package with exposed pad not present (unlike DFN variants).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3 MHz - enables use of sub-3 mm inductors and low-profile ceramic capacitors; reduces EMI filtering burden. |
| Max Output Voltage | 36 V - supports high-bias applications like CCD sensors and LCD gate drivers without external HV transistors. |
| Integrated Switch Rating | 300 mA - sufficient for 70 mA @ 12 V (≈85% efficiency) with margin for transient loads and layout losses. |
| Input Voltage Range | 2.5 V to 16 V - compatible with single Li-ion, dual alkaline, or industrial 12 V rails without pre-regulation. |
| Feedback Reference | 1.255 V ±1.6% - sets output via R1/R2 divider; enables precise 5 V, 12 V, or custom bias voltages. |
| Shutdown Current | <1 μA - preserves battery life in always-on systems such as medical diagnostics or portable imaging. |
| Quiescent Current | 1 mA - balances light-load efficiency and startup responsiveness in intermittent-duty applications. |
Pinout & Package
The LT3460ES5#TRMPBF is housed in a 5-lead plastic TSOT-23 (S5) package (JEDEC MO-193), 2.9 mm × 1.6 mm × 1.0 mm, with no exposed thermal pad. Pin 1 is marked by a dot or beveled edge; leads are gull-wing, lead-free (Pb-free) finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector | Connects to inductor and Schottky diode anode; high dv/dt node requiring minimal trace length and ground guard ring. |
| GND (Pin 2) | Power Ground | Main return path for switch current and IC bias; must tie directly to local ground plane with low-inductance connection. |
| FB (Pin 3) | Feedback Input | Senses divided output voltage; high-impedance node (5–80 nA bias) sensitive to noise - keep traces short and away from SW. |
| SHDN (Pin 4) | Enable/Soft-Start Control | Active-high logic input; 1.5 V threshold enables device; RC filter here controls startup slew rate and inrush limiting. |
| VIN (Pin 5) | Input Supply | Connects to input capacitor (≥4.7 μF ceramic); requires local 0.1 μF bypass close to pin for high-frequency noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 1.3 MHz Fixed Switching Frequency | Enables compact magnetics and low-profile passive selection while maintaining predictable EMI spectrum for FCC/CE compliance. |
| 300 mA Integrated NPN Switch | Eliminates external transistor and driver, reducing BOM count and PCB area in space-constrained modules like digital cameras. |
| 1.255 V Precision Feedback Reference | Supports ±1.5% output regulation across temperature and line/load conditions without trimming or calibration. |
| <1 μA Shutdown Current | Extends battery runtime in standby modes for portable medical or test equipment where duty cycle is <1%. |
| Internal Soft-Start via SHDN Pin | Prevents output overshoot and inrush current spikes during power-up - no extra components required beyond optional RC filter. |
Applications
| Digital Camera Power | CCD Bias Supply |
|---|---|
Use Scenario: Generating stable 12 V or 15 V rail from a 3.3 V or 5 V main supply to power image sensor analog front-end circuitry. IC Role / Device Role / Timing Role: Primary boost regulator delivering regulated high-voltage bias with low ripple and fast transient response to sensor pixel readout cycles. Use Value: Enables compact, low-noise camera modules by integrating switch and control loop - eliminates discrete transistor + controller complexity. | Use Scenario: Providing programmable 18–36 V bias to CCD vertical/horizontal transfer gates in scientific or industrial imaging systems. IC Role / Device Role / Timing Role: High-voltage boost converter operating in continuous conduction mode with tight output tolerance to ensure consistent charge transfer efficiency. Use Value: Achieves >80% efficiency at 4–10 mA load while maintaining <10 mV p-p ripple - critical for low-dark-current CCD performance. |
| TFT-LCD Panel Supply | Medical Diagnostic Equipment |
Use Scenario: Generating VON (15–20 V) and VOFF (−5 to −10 V, with external inverter) for active-matrix LCD gate drivers in handheld displays. IC Role / Device Role / Timing Role: Primary positive high-side boost stage; synchronized with display frame timing to minimize supply interaction during pixel updates. Use Value: Delivers clean, well-regulated bias with minimal EMI coupling into sensitive video data lines due to fixed 1.3 MHz frequency. | Use Scenario: Powering isolated analog signal chains (e.g., photodiode amplifiers, ADC references) in portable ultrasound or X-ray detectors. IC Role / Device Role / Timing Role: Local point-of-load boost converter providing stable 5 V or 12 V from a 3.6 V Li-ion battery, with ultra-low shutdown current for long idle periods. Use Value: Meets IEC 60601 leakage and efficiency requirements while fitting within tight mechanical envelopes of handheld diagnostic tools. |
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#TRMPBF | Includes integrated 38 V Schottky diode; same 1.3 MHz frequency and 300 mA switch; SC70-6 package. | Reduces external component count (no external diode needed); slightly larger footprint but better thermal dissipation (θJA = 270°C/W). | Select when minimizing bill-of-materials and board area is prioritized over TSOT-23 footprint compatibility. |
| LTC3400EDC#TRMPBF | Synchronous rectification (no external diode); 1.2 MHz frequency; 600 mA switch; DFN-6 (2 mm × 2 mm) package. | Higher efficiency at medium loads (>20 mA); requires different layout and feedback network; not pin-compatible. | Choose for battery-powered systems needing >90% efficiency at 30–100 mA loads, accepting redesign effort. |
Compared with LT3460ES5#TRMPBF, LT3461ESC6#TRMPBF simplifies design by integrating the Schottky diode but increases package size, while LTC3400EDC#TRMPBF improves light-to-mid load efficiency via synchronous operation but demands layout revision and lacks direct pin mapping.
Availability
LT3460ES5#TRMPBF is available at Aetrix Electronics and suitable for CCD bias supplies, TFT-LCD panel power, and portable medical diagnostic equipment requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LT3460ES5#TRMPBF 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 technical and manufacturing continuity for legacy Linear power products.
The LT3460 series belongs to Linear's general-purpose boost converter product line, designed for space-constrained, medium-power applications requiring high-voltage output, low quiescent current, and minimal external components - especially in imaging, display, and portable instrumentation.
FAQ
What is the maximum output voltage achievable with the LT3460ES5#TRMPBF?
The LT3460ES5#TRMPBF supports output voltages up to 36 V, limited by its internal 38 V-rated switch and external diode/capacitor ratings. In practice, designs generating 12 V at 70 mA or 36 V at 4 mA are validated per the datasheet; higher outputs require careful attention to voltage derating and layout parasitics.
Does the LT3460ES5#TRMPBF require an external Schottky diode?
Yes, the LT3460ES5#TRMPBF requires an external Schottky diode (e.g., CMDSH2-3) connected between SW and VOUT. Unlike the LT3461 variant, it does not integrate a diode; omission will prevent proper boost operation and may damage the IC due to reverse current flow.
Can the LT3460ES5#TRMPBF operate from a 2.5 V input to generate 5 V output?
Yes, the LT3460ES5#TRMPBF operates down to 2.5 V input and can generate 5 V output using a standard resistor divider on FB (e.g., 15 kΩ/130 kΩ). Efficiency exceeds 75% at 50 mA load per typical curves, making it suitable for Li-ion or dual-AA powered 5 V subsystems.
What is the thermal resistance (θJA) of the LT3460ES5#TRMPBF in standard layout?
The LT3460ES5#TRMPBF has θJA = 256°C/W in free air and 120°C/W on a PCB with ground plane per datasheet. Real-world performance depends heavily on copper area under GND pin and thermal vias; no exposed pad is present, so heatsinking relies solely on lead-frame conduction.
Is the LT3460ES5#TRMPBF pin-compatible with the LT3460-1 variants?
No, the LT3460ES5#TRMPBF (5-pin TSOT-23) is not pin-compatible with LT3460-1 variants (6-pin SC70 or DFN), which feature different pin counts, assignments (e.g., NC pins), and 650 kHz switching frequency. Swapping requires PCB redesign and firmware timing adjustments.
LT3460ES5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- TSOT-23-5
LT3460ES5#TRMPBF FAQ
1.How can I place an order for LT3460ES5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3460ES5#TRMPBF 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 LT3460ES5#TRMPBF reliable?
The price and inventory of LT3460ES5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3460ES5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT3460ES5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3460ES5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3460ES5#TRMPBF?
LT3460ES5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3460ES5#TRMPBF 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 LT3460ES5#TRMPBF?
For technical support, including LT3460ES5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3460ES5#TRMPBF requirements.
6.How does Aetrix verify that LT3460ES5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT3460ES5#TRMPBF 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 LT3460ES5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT3460ES5#TRMPBF?
All LT3460ES5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3460ES5#TRMPBF, 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 LT3460ES5#TRMPBF part is unused and in its original packaging.
Return procedure for LT3460ES5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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