My Inquiry
My Account
Analog Devices Inc. LT3460ES5#TRPBF
- Part No.:
- LT3460ES5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT3460ES5#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT3460ES5#TRPBF 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 2.5 V to 16 V input range. 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 portable medical diagnostic equipment.
For engineers reviewing the LT3460ES5#TRPBF datasheet, LT3460ES5#TRPBF pinout, LT3460ES5#TRPBF application, or LT3460ES5#TRPBF 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#TRPBF employs constant-frequency peak current-mode control with an internal 1.255 V reference and ramp-compensated PWM comparator. Its oscillator operates at 1.3 MHz (not adjustable), enabling compact external components including 22 μH inductors and low-profile ceramic capacitors.
It integrates a 38 V-rated NPN switch with 300 mA current limit and 320 mV typical VCE(SAT) at 250 mA. The feedback loop uses internal RC/CC compensation but requires optional feed-forward capacitor (e.g., 22 pF) for stable operation across load and input variations in boost configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3 MHz - enables use of small 22 μH inductors and sub-1 mm height capacitors; reduces EMI filtering complexity. |
| Input Voltage Range | 2.5 V to 16 V - supports single-cell Li-ion (2.7–4.2 V), 3.3 V, 5 V, and 12 V rails without pre-regulation. |
| Output Voltage Capability | Up to 36 V - accommodates CCD bias, TFT-LCD gate drivers, and XDSL line drivers requiring >12 V. |
| Integrated Switch Rating | 300 mA current limit, 38 V breakdown - sufficient for 70 mA @ 12 V (η ≈ 78% at 5 VIN) with margin for transient loads. |
| Feedback Reference | 1.255 V ±1.6% (–40°C to 85°C) - sets output via resistor divider (e.g., 15 kΩ/130 kΩ for 12 V); low bias current (≤25 nA) minimizes divider error. |
| Quiescent Current | 1 mA typical - ensures low standby power in battery-backed systems; shutdown current <1 μA extends shelf life. |
| Package Thermal Resistance | θJA = 256°C/W (free air), 120°C/W (over ground plane) - mandates local copper pour and minimal trace length on SW/FB pins for reliability. |
Pinout & Package
LT3460ES5#TRPBF is housed in a 5-lead plastic TSOT-23 (S5) package, 2.9 mm × 1.6 mm × 1.0 mm, with exposed pad not present (unlike DFN variants). Pin 1 is marked by a dot or bevel; pin numbering follows standard TSOT-23 orientation (pin 1 top-left, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 5) | Input supply connection | Must be locally bypassed with ≥4.7 μF ceramic capacitor; accepts 2.5–16 V; feeds internal bias circuitry and switch driver. |
| SW (Pin 1) | Switch collector node | Connects to inductor and Schottky diode anode; high dv/dt node - minimize trace area and avoid routing near FB/GND to prevent noise coupling. |
| FB (Pin 3) | Feedback input | Senses output via resistor divider; 1.255 V reference threshold; high-impedance (≤25 nA bias) - keep traces short and away from noisy nodes. |
| SHDN (Pin 4) | Enable/shutdown control | Active-high logic: ≥1.5 V enables, ≤0.4 V disables; also provides soft-start when RC-filtered (e.g., 47 kΩ + 47 nF). |
| GND (Pin 2) | Power and signal ground | Single-point tie to local ground plane; connects internally to emitter of NPN switch and error amplifier - critical for noise immunity and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.3 MHz switching | Predictable EMI profile and compact BOM - eliminates need for external frequency programming components. |
| 300 mA integrated NPN switch | Eliminates external transistor and drive circuitry; rated for 38 V breakdown - simplifies 36 V max boost designs. |
| 1.255 V precision feedback reference | Enables accurate output regulation (±1.6%) across –40°C to 85°C without trimming; low bias current preserves divider accuracy. |
| <1 μA shutdown current | Extends battery life in always-on backup systems; supports deep-sleep modes in portable medical and imaging devices. |
| TSOT-23 package compatibility | Industry-standard footprint (JEDEC MO-193) - enables drop-in replacement for similar boost converters and reuse of existing PCB layouts. |
Applications
| CCD Bias Supply | TFT-LCD Gate Driver Supply |
|---|---|
|
Use Scenario: Generating 24–36 V bias for charge-coupled device (CCD) image sensors in digital cameras and industrial inspection systems. IC Role / Device Role / Timing Role: Step-up regulator providing regulated high-voltage rail; operates in continuous conduction mode with fixed 1.3 MHz clock to minimize output ripple. Use Value: Enables compact, low-noise bias generation using only 22 μH inductor and 1 μF ceramic output cap - critical for pixel-level signal integrity. |
Use Scenario: Powering positive and negative gate drivers (VGH/VGL) in active-matrix LCD panels for handheld displays and medical monitors. IC Role / Device Role / Timing Role: Primary positive boost stage (e.g., +15 V) paired with inverting charge pump; fixed-frequency operation eases EMI filtering in display timing-critical zones. Use Value: Delivers stable 15 V @ 20 mA with <1% load regulation - ensures consistent TFT turn-on voltage and prevents screen flicker or ghosting. |
| XDSL Line Power | Battery-Backed Diagnostic Equipment |
|
Use Scenario: Providing isolated 12–24 V auxiliary power for DSL transceivers and line drivers in residential gateways and CPE devices. IC Role / Device Role / Timing Role: Non-isolated boost converter feeding downstream DC/DC or LDOs; operates from 3.3 V or 5 V system rail under varying line conditions. Use Value: Maintains >75% efficiency from 3.3 V to 12 V across 10–60 mA load range - reduces thermal stress in sealed, fanless enclosures. |
Use Scenario: Sustaining critical sensor bias and memory retention during AC power loss in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Low-quiescent boost stage converting depleted Li-ion (2.7 V) to 5 V for real-time clock and SRAM backup. Use Value: Draws only 1 mA quiescent current and starts up reliably down to 2.5 V - extends usable battery reserve time by >40% vs. higher-IQ alternatives. |
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 40 V Schottky diode; same 1.3 MHz freq; 300 mA switch; SC70-6 package (6-pin, no NC). | Reduces BOM count by eliminating external diode; slightly larger footprint but better thermal performance (θJA = 270°C/W). | Select when board space allows SC70-6 and diode integration improves reliability or layout simplicity. |
| LTC3400ES5#TRPBF | Synchronous rectification (no external diode needed); 1.2 MHz; 600 mA switch; same TSOT-23-5 package; lower IQ (19 μA). | Higher efficiency at light loads (<10 mA); limited max output voltage (5 V) - unsuitable for >12 V applications. | Select only for low-voltage (≤5 V), high-efficiency boost where output voltage headroom is constrained. |
Compared with LT3460ES5#TRPBF, LT3460ES5#TRPBF offers superior high-voltage capability (36 V) and proven robustness in CCD/TFT bias roles, while LT3461ESC6#TRPBF trades pin count for integration and LTC3400ES5#TRPBF sacrifices voltage range for synchronous efficiency below 5 V.
Availability
LT3460ES5#TRPBF is available at Aetrix Electronics and suitable for CCD bias supplies, TFT-LCD gate drivers, and XDSL line power applications requiring stable component supply, long-term manufacturability, and guaranteed parametric compliance over –40°C to 85°C.
Supply support for LT3460ES5#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 as a general-purpose, high-voltage boost converter platform targeting portable imaging, display, and telecom power applications where small size, predictable EMI, and wide input range are essential.
FAQ
What is the maximum output voltage achievable with the LT3460ES5#TRPBF?
The LT3460ES5#TRPBF supports output voltages up to 36 V, limited by its 38 V-rated internal NPN switch. This is confirmed in the Absolute Maximum Ratings table and validated in typical applications such as the 12 V to 36 V and 5 V to 36 V boost circuits shown in the datasheet. Output voltage is set externally via the FB resistor divider, with stability maintained across the full range when proper compensation (e.g., 22 pF feed-forward capacitor) is applied.
Does the LT3460ES5#TRPBF require an external Schottky diode?
Yes, the LT3460ES5#TRPBF requires an external Schottky diode - it contains only the NPN switch and control circuitry. The datasheet specifies Central Semiconductor CMDSH2-3 or equivalent in all reference designs. Unlike the pin-compatible LT3461, the LT3460ES5#TRPBF does not integrate a diode; omitting it will prevent proper boost operation and may damage the switch.
Can the LT3460ES5#TRPBF operate from a single Li-ion cell (2.7–4.2 V)?
Yes, the LT3460ES5#TRPBF operates across 2.5 V to 16 V input, fully covering the discharged-to-full range of a single Li-ion cell. The datasheet includes a "Li-Ion to 18 V" application (Figure TA08) using LT3460-1, and the LT3460ES5#TRPBF's 1.3 MHz switching and 300 mA switch ensure stable 12 V @ 40–70 mA output even at 2.7 VIN, with efficiency dropping to ~70% (per Figure TA03a).
What is the purpose of the feed-forward capacitor (CF) in LT3460ES5#TRPBF designs?
The feed-forward capacitor (CF), typically 22 pF, is connected from VOUT to FB to improve phase margin in the LT3460ES5#TRPBF's feedback loop. As explained in the Operation section, the internal compensation zero (~70 kHz) is too low for 1.3 MHz operation; CF introduces a controlled zero-pole pair that reshapes the Bode plot, raising phase margin from ~20° to ~60° (Figure F04). Omitting CF risks instability under dynamic load steps.
Is the LT3460ES5#TRPBF pin-compatible with the LT3460ESC6#TRPBF?
No, the LT3460ES5#TRPBF (TSOT-23-5) and LT3460ESC6#TRPBF (SC70-6) are not pin-compatible. The TSOT-23-5 has pins VIN, SW, FB, SHDN, GND in a 5-pin linear arrangement; the SC70-6 adds a second GND pin (Pin 5) and relocates VIN to Pin 6. Layout redesign and schematic changes are required for substitution - they share functional equivalence but differ in pin count, assignment, and thermal characteristics.
LT3460ES5#TRPBF 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#TRPBF FAQ
1.How can I place an order for LT3460ES5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3460ES5#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 LT3460ES5#TRPBF reliable?
The price and inventory of LT3460ES5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3460ES5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3460ES5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3460ES5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3460ES5#TRPBF?
LT3460ES5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3460ES5#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 LT3460ES5#TRPBF?
For technical support, including LT3460ES5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3460ES5#TRPBF requirements.
6.How does Aetrix verify that LT3460ES5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3460ES5#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 LT3460ES5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3460ES5#TRPBF?
All LT3460ES5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3460ES5#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 LT3460ES5#TRPBF part is unused and in its original packaging.
Return procedure for LT3460ES5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT3460ES5#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
