My Inquiry
My Account
Analog Devices Inc. LT3002IS8E#PBF
- Part No.:
- LT3002IS8E#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LT3002IS8E#PBF.pdf
- Description:
- IC REG FLYBACK ADJ 3.6A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:228
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT3002IS8E#PBF from Analog Devices is a monolithic micropower isolated flyback converter IC with integrated 3.6A/65V DMOS power switch, operating from 4V to 36V input and delivering up to 10W isolated output power. It implements primary-side regulation without opto-isolator or third winding, uses boundary mode for high efficiency and low ripple burst mode for light-load operation, and targets auxiliary/housekeeping power in industrial and automotive systems.
For engineers reviewing the LT3002IS8E#PBF datasheet, LT3002IS8E#PBF pinout, LT3002IS8E#PBF application, or LT3002IS8E#PBF equivalent, key selection criteria include its no-opto isolated flyback architecture, 12 kHz minimum switching frequency, 0.5% typical minimum load requirement, ±1.02V RREF reference accuracy, and thermally enhanced 8-lead SOIC (S8E) package with exposed GND pad.
Technical Context
The LT3002IS8E#PBF employs current-mode quasi-resonant boundary conduction mode at heavy loads and low-ripple Burst Mode® operation at light loads, enabling stable regulation with minimal external components. Its internal 3.6A/65V DMOS switch and integrated high-voltage control logic eliminate need for external gate drivers or isolation feedback circuitry.
Regulation is achieved by sampling the reflected output voltage directly from the SW pin during zero-secondary-current intervals, using RFB/RREF resistor divider referenced to a 1.00V internal bandgap. The TC pin provides PTAT voltage (3.35mV/°K) for output diode temperature compensation, supporting stable 5V output across –40°C to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4V to 36V - supports wide-input industrial and automotive supply rails without pre-regulation. |
| Output Power | Up to 10W - enables compact isolated auxiliary supplies for microcontrollers, sensors, and gate drivers. |
| RREF Voltage | 0.98V to 1.02V - ensures ±2% output voltage accuracy over temperature when used with precision resistors. |
| Switch Rating | 3.6A max, 65V breakdown - handles peak currents and leakage spikes in flyback topologies up to 32V input. |
| fMIN | 11.3kHz to 12.7kHz - sets minimum operating frequency to maintain control loop stability under light load. |
| Quiescent Current | 0.5µA (typ) in shutdown - minimizes standby power loss in always-on isolated subsystems. |
| Min Load | <0.5% of full output - reduces need for dummy loads; compatible with Zener-based preloading for ultra-low-power modes. |
Pinout & Package
LT3002IS8E#PBF is housed in an 8-lead plastic SOIC (S8E) package with exposed thermal pad (Pin 9), rated for –40°C to 125°C operating junction temperature. The exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN/UVLO (Pin 1) | Enable / Undervoltage Lockout Input | Accurate 1.214V falling threshold with 14mV hysteresis; sinks 2.5µA below threshold for programmable UVLO hysteresis. |
| INTVCC (Pin 2) | Internal 3V Regulator Output | Supplies internal circuitry; requires ≥1µF ceramic bypass to GND; must not be externally driven. |
| VIN (Pin 3) | Main Input Supply | Provides power to internal logic and serves as reference for RFB feedback network; bypass locally to GND. |
| GND (Pin 4 + Exposed Pad Pin 9) | Ground Reference & Thermal Path | Primary return path for all currents; exposed pad is electrically and thermally connected to GND - mandatory soldering required. |
| SW (Pin 5) | Drain of Internal DMOS Switch | Connects to transformer primary; high dv/dt node - minimize trace area to reduce EMI and voltage overshoot. |
| RFB (Pin 6) | Feedback Resistor Input | Accepts reflected voltage from SW node; ratio with RREF sets output voltage per VOUT = VREF × (RFB/RREF) × (1/NPS) – VF. |
| RREF (Pin 7) | Reference Resistor Input | Connects to ground-referenced resistor; establishes 1.00V reference point for feedback divider; nominal value 10kΩ. |
| TC (Pin 8) | Temperature Compensation Output | PTAT voltage (1.00V at 25°C, 3.35mV/°K); used to offset output diode forward voltage drift via RTC resistor to RREF. |
Key Features
| Feature | Design Value |
|---|---|
| No-opto primary-side regulation | Eliminates opto-isolator and third transformer winding - reduces BOM count, cost, and board space while improving long-term reliability. |
| Boundary + Low-ripple Burst Mode | Enables >85% efficiency across 10mA–2.9A load range (at VIN=24V) with <50mVpp output ripple at light loads. |
| Integrated 3.6A/65V DMOS switch | Removes need for external MOSFET, driver, and associated gate-loop layout - simplifies design and improves EMI performance. |
| Accurate EN/UVLO with hysteresis | 1.214V enable threshold with 14mV hysteresis and 2.5µA sink current enables robust, user-programmable input undervoltage lockout. |
| Output short-circuit protection | Auto-recovery protection prevents damage during fault conditions without requiring external current-limiting circuitry. |
| Thermally enhanced S8E package | θJA = 33°C/W with soldered exposed pad - supports 10W operation in compact layouts without heatsinks. |
Applications
| Industrial PLC Auxiliary Supply | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Isolated 5V rail powering CAN transceivers and microcontroller peripherals in noisy factory environments. IC Role / Device Role / Timing Role: Primary-side regulated flyback controller providing galvanic isolation between field I/O and logic domain. Use Value: Eliminates opto-isolator aging and unit-to-unit variation, ensuring stable 5V ±2% output over –40°C to 85°C ambient with no external compensation. |
Use Scenario: Compact 5V housekeeping supply for infotainment head unit MCU, sensors, and display backlight drivers. IC Role / Device Role / Timing Role: Micropower isolated DC/DC converter meeting automotive cold-crank (4V) and load-dump (36V) requirements. Use Value: 0.5µA shutdown current and 10W capability enable always-on functionality while complying with ISO 16750-2 transient specifications. |
| Medical Patient Monitoring Interface | Isolated Industrial Sensor Node |
|
Use Scenario: Isolated 5V supply for analog front-end amplifiers and ADCs in Class II medical devices requiring reinforced insulation. IC Role / Device Role / Timing Role: Safety-certifiable isolated power source eliminating third-winding complexity and opto nonlinearity. Use Value: Boundary mode operation ensures tight load regulation (<±3%) across 10mA–1.5A, critical for low-noise signal chain integrity. |
Use Scenario: Battery-powered wireless sensor node requiring isolated 3.3V/5V rails for RS-485 transceivers and isolated ADCs. IC Role / Device Role / Timing Role: Low-quiescent-current flyback controller enabling multi-year battery life with <0.5% minimum load. Use Value: Burst Mode® maintains >75% efficiency at 10mA load, extending runtime without compromising isolation integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28740DR | Requires external MOSFET; no integrated switch; 100V max VDS rating; higher IQ (1.5mA active). | Needs discrete FET, gate driver, and snubber - larger solution size; better suited for >65V input designs. | Select UCC28740DR only if input exceeds 36V or higher VDS margin is required; adds BOM and layout complexity vs LT3002IS8E#PBF. |
| MAX17690ATP+ | Integrated 1.2A/100V switch; lower max output power (5W); fixed 5V output option; no TC pin for diode compensation. | Limited to lower-power auxiliary rails; lacks temperature compensation - less stable over wide temperature ranges. | Choose MAX17690ATP+ for cost-sensitive, fixed-output 5V designs where diode drift is negligible; not suitable for 10W or precision temp-compensated outputs. |
Compared with UCC28740DR and MAX17690ATP+, the LT3002IS8E#PBF delivers higher integration (3.6A/65V switch), greater output power (10W), and unique primary-side temperature compensation - making it optimal for compact, high-reliability isolated supplies demanding stable regulation across –40°C to 125°C.
Availability
LT3002IS8E#PBF is available at Aetrix Electronics and suitable for industrial PLC auxiliary supplies, automotive BCM housekeeping rails, and medical patient monitoring interfaces requiring stable component supply, long lifecycle support, and guaranteed parametric compliance.
Supply support for LT3002IS8E#PBF 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT3002IS8E#PBF belongs to Analog Devices' µModule® and isolated power controller product line, designed specifically for compact, high-efficiency isolated DC/DC conversion without optocouplers or third windings.
FAQ
What is the maximum output power achievable with the LT3002IS8E#PBF?
The LT3002IS8E#PBF delivers up to 10W of isolated output power when operated within its specified input range (4V to 36V) and thermal limits. This assumes proper PCB layout with the exposed GND pad fully soldered, adequate transformer sizing (e.g., 9µH primary inductance), and appropriate output diode/capacitor selection per the datasheet design guidelines. Derating applies above 85°C ambient.
Does the LT3002IS8E#PBF require an opto-isolator or third transformer winding for regulation?
No, the LT3002IS8E#PBF does not require an opto-isolator or third transformer winding. It achieves precise output voltage regulation by sampling the reflected output voltage directly from the SW pin during zero-secondary-current intervals in boundary or discontinuous conduction mode - a core feature confirmed in the device description and typical application schematics.
What is the purpose of the TC pin on the LT3002IS8E#PBF?
Pin 8 (TC) on the LT3002IS8E#PBF provides a PTAT (proportional-to-absolute-temperature) voltage of 1.00V at 25°C with a coefficient of 3.35mV/°K. It is used to compensate for the forward voltage drift of the output rectifier diode by connecting an RTC resistor between TC and RREF, thereby stabilizing output voltage over temperature - a function explicitly detailed in the Applications Information section.
Can the LT3002IS8E#PBF operate with a 4V input supply?
Yes, the LT3002IS8E#PBF is fully specified to operate down to 4V input, as confirmed in both the Absolute Maximum Ratings table (VIN min = 4V) and Electrical Characteristics (VIN Voltage Range: 4V to 36V). It maintains regulation and Burst Mode® operation even during automotive cold-crank conditions, provided INTVCC is properly bypassed and minimum load requirements are met.
What package type and thermal characteristics does the LT3002IS8E#PBF use?
The LT3002IS8E#PBF uses the 8-lead plastic SOIC (S8E) package with exposed thermal pad (Pin 9), rated for –40°C to 125°C junction temperature. Its thermal resistance is θJA = 33°C/W when the exposed pad is soldered to a 1-in² copper area - enabling 10W operation without additional heatsinking, as verified in the Package Description and Absolute Maximum Ratings sections.
LT3002IS8E#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Flyback
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 3.6A
- Frequency - Switching:
- 12kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
LT3002IS8E#PBF FAQ
1.How can I place an order for LT3002IS8E#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3002IS8E#PBF 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 LT3002IS8E#PBF reliable?
The price and inventory of LT3002IS8E#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3002IS8E#PBF is usually 5 days.
3.What payment methods are accepted for LT3002IS8E#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3002IS8E#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3002IS8E#PBF?
LT3002IS8E#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3002IS8E#PBF 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 LT3002IS8E#PBF?
For technical support, including LT3002IS8E#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3002IS8E#PBF requirements.
6.How does Aetrix verify that LT3002IS8E#PBF is sourced from the original manufacturer or authorized distributors?
All LT3002IS8E#PBF 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 LT3002IS8E#PBF meets industry standards.
7.What is the process for return or replacement of LT3002IS8E#PBF?
All LT3002IS8E#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3002IS8E#PBF, 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 LT3002IS8E#PBF part is unused and in its original packaging.
Return procedure for LT3002IS8E#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT3002IS8E#PBF 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…
