TLE83862ELXUMA1 - 700kHz Boost Controller, 4.75-45V Input | Infineon
MPN: TLE83862ELXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.32 | $232.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for TLE83862ELXUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLE83862ELXUMA2
β Drop-Inπ Reference alternative (not in catalog)
TLE83862EU
β Drop-Inπ Reference alternative (not in catalog)
TLE8386-2EL
β Drop-Inπ Reference alternative (not in catalog)
TLE8386-2EJ
β Drop-Inπ Reference alternative (not in catalog)
TLE83862ELXUMA1-Q1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLE83862ELXUMA1 Maximum Ratings & Electrical Characteristics
| Topology | Boost (Step-Up), low-side current sense |
| Input Voltage Range | 4.75 V to 45 V |
| Output Type | Adjustable (external feedback resistor divider) |
| Switching Frequency Range | 100 kHz to 700 kHz (adjustable, external sync) |
| Typical Switching Frequency | 700 kHz |
| Control Method | Peak current mode |
| Current Sense | Low-side shunt resistor |
| Gate Driver | External N-channel MOSFET driver |
| Operating Temperature Range | -40 C to +125 C |
| Package | PG-SSOP-14-EP (14-LSSOP with exposed pad) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
| Built-in Protection | Overcurrent, overvoltage, thermal shutdown (per datasheet description) |
| External Synchronization | Yes (SYNC input per datasheet) |
TLE83862ELXUMA1 Pin Configuration
| Pin 1 | SGND β Signal ground (per datasheet) |
| Pin 2 | FB β Feedback input (per datasheet) |
| Pin 3 | COMP β Compensation network node (per datasheet) |
| Pin 4 | EN β Enable input (per datasheet) |
| Pin 5 | RT β Timing resistor sets switching frequency (per datasheet) |
| Pin 6 | SYNC β External synchronization input (per datasheet) |
| Pin 7 | VCC β Internal supply / VCC (per datasheet) |
| Pin 8 | GND β Power ground (per datasheet) |
| Pin 9 | CS β Current sense input from low-side shunt (per datasheet) |
| Pin 10 | DRV β Gate driver output for external N-MOSFET (per datasheet) |
| Pin 11 | BOOT β Bootstrap supply for high-side gate drive (per datasheet) |
| Pin 12 | VIN β Input voltage / battery supply (per datasheet) |
| Pin 13 | VSUP β Supply / battery voltage sense (per datasheet) |
| Pin 14 | NC β Not connected (per datasheet) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TLE83862ELXUMA1 is suitable for 6 applications: Automotive LED Headlight Boost Stage, Pre-Boost Supply for Downstream Buck Regulators, USB-PD / Automotive USB Type-C Adapter Power, Industrial 24 V to High-Voltage Rail, Battery-Backed Boost Converter, Solar-Panel / Energy-Harvesting Pre-Boost.
Automotive LED Headlight Boost Stage
The TLE83862ELXUMA1 is well suited as the boost-stage controller for automotive LED headlamp drivers. Its 4.75 V to 45 V input range covers the full automotive 12 V / 24 V bus including cold-crank and load-dump transients, while the 700 kHz adjustable switching frequency lets designers shrink the boost inductor and output capacitor to fit the headlamp housing. The integrated overcurrent, overvoltage, and thermal-shutdown protections match the diagnostic requirements of automotive lighting ECUs. Place the controller between the battery feed and the SEPIC or boost inductor, drive an external logic-level N-MOSFET, and use a low-side shunt resistor with a Kelvin connection for accurate current-mode control.
Recommended
Pre-Boost Supply for Downstream Buck Regulators
In automotive 12 V systems that must operate through cold-crank drops as low as 4.75 V, the TLE83862ELXUMA1 provides a pre-boost stage that lifts a sagging battery rail up to a stable 8-12 V intermediate bus, allowing downstream buck regulators to maintain regulation. The 700 kHz switching keeps the pre-boost converter compact, and the external SYNC pin lets the designer align switching edges with the downstream converters to avoid beat-frequency noise. The exposed pad simplifies PCB thermal management for continuous high-current operation under hood temperatures.
Recommended
USB-PD / Automotive USB Type-C Adapter Power
USB Power Delivery and Type-C adapters in vehicles require a boost stage to deliver 5 V, 9 V, 15 V, or 20 V from the 12 V automotive rail. The TLE83862ELXUMA1's 4.75 V to 45 V input, 700 kHz capability, and AEC-Q100 qualification make it a strong fit for in-vehicle charging ports. Use it to generate an intermediate bus that a downstream buck-boost converter (for example, based on the TLE9104SH) modulates to the PD contract voltage. The integrated protections reduce external safety circuitry and support functional-safety documentation.
Recommended
Industrial 24 V to High-Voltage Rail
Industrial PLC and sensor-supply designs often require a clean 24 V to 48 V or 24 V to 60 V rail from a 24 V industrial bus. The TLE83862ELXUMA1's 45 V absolute-maximum input tolerates 24 V industrial transients and supports a boost topology to higher intermediate voltages. Its peak-current-mode control provides cycle-by-cycle overcurrent protection that is valuable when driving capacitive loads downstream. Synchronize to an external clock to align switching noise with the host PLC's scan cycle and ease EMI filtering.
Recommended
Battery-Backed Boost Converter
Backup-power systems that must deliver a regulated bus from a partially discharged battery use the TLE83862ELXUMA1 to maintain output regulation even as the battery voltage droops below the nominal rail. The wide 4.75 V to 45 V input window accepts deeply discharged lead-acid, Li-ion, or supercapacitor stacks without pre-regulation. The exposed thermal pad supports continuous high-current operation, and the AEC-Q100 grade extends reliability to industrial battery-backup and e-call/telematics units in vehicles.
Recommended
Solar-Panel / Energy-Harvesting Pre-Boost
Low-power solar and energy-harvesting front ends frequently need to lift a 1-10 V panel voltage to a stable 12-24 V bus for battery charging or grid-tie inverter stages. The TLE83862ELXUMA1 accepts the panel voltage directly (above its 4.75 V UVLO threshold) and runs a boost stage that operates efficiently at light loads thanks to the adjustable frequency and external SYNC capability. The low-side current sense allows cycle-by-cycle current limiting during sudden irradiance changes.
Recommended
Recommended Products Summary
Engineering reference data for TLE83862ELXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLE83862ELXUMA2 | TLE83862EU | TLE8386-2EL | TLE8386-2EJ |
|---|---|---|---|---|---|
| Package | PG-SSOP-14-EP (LSSOP-14 with exposed pad) | PG-SSOP-14-EP - same | PG-SSOP-14-EP - same | PG-SSOP-14-EP - same | PG-SSOP-14-EP - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Input Voltage Range | 4.75 V to 45 V | 4.75 V to 45 V | 4.75 V to 45 V | 4.75 V to 45 V | 4.75 V to 45 V |
| Switching Frequency | 100 kHz to 700 kHz (typ 700 kHz) | 100 kHz to 700 kHz | 100 kHz to 700 kHz | 100 kHz to 700 kHz | 100 kHz to 700 kHz |
| Topology | Boost, low-side current sense | Boost, low-side current sense | Boost, low-side current sense | Boost, low-side current sense | Boost, low-side current sense |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes |
| External Synchronization | Yes | Yes | Yes | Yes | Yes |
| Approx. 1k-piece Price | $1.85 (as of 2026-09-14) | Comparable, reel orientation variant | Comparable, tube packaging | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Wide 4.75 V to 45 V input window covers full automotive bus range including load-dump (vs TLE83862ELXUMA2)
- Adjustable 100 kHz to 700 kHz switching with external synchronization (vs TLE8386-2EJ)
- Low-side current-sense topology simplifies ground-referenced layout (vs Generic high-side current-sense alternatives)
Design Notes
Estimated: at VIN = 14 V, VOUT = 24 V, IOUT = 1 A in a typical boost application, the controller itself dissipates roughly 0.3-0.5 W (gate-drive + quiescent losses). The PG-SSOP-14-EP package exposes a thermal pad that must be soldered to at least 100 mm^2 of copper pour on top and bottom layers with multiple thermal vias to keep the junction below 125 C in automotive under-hood environments. Avoid placing the controller far from its MOSFET to minimize gate-loop inductance and switching losses.
Route the low-side current-sense traces as a true Kelvin connection: the shunt-resistor pads should have one pair of traces for the high-current path and a separate, narrow pair feeding the CS pin, joined at the shunt body. Place the input capacitor as close as possible to the boost inductor and MOSFET drain, and keep the output capacitor return path short to the power ground. The exposed thermal pad must be tied to the signal ground for noise immunity or to power ground for best thermal performance, following the manufacturer's recommended layout in the datasheet.
Do not exceed the 45 V absolute-maximum input rating; automotive load-dump pulses can reach 35-40 V transiently, so leave at least 10% margin. Avoid leaving the SYNC pin floating if unused - tie it to GND or VCC according to the datasheet to prevent erratic switching. The RT resistor value sets both frequency and current-limit threshold; double-check the chosen resistor against both targets when deviating from the typical 700 kHz operation.
Compliance Information
AEC-Q100 automotive qualified per Arrow and Jotrin product descriptors. RoHS compliance confirmed via distributor listings. Halogen-free status not stated explicitly in the verified web data - marked unknown.
