TLE83862ELXUMA1 - 700kHz Boost Controller, 4.75-45V Input | Infineon
Référence : TLE83862ELXUMA1 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 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 |
TLE83862ELXUMA1 Présentation
A boost controller is a DC-DC switching controller that regulates an output voltage higher than the input by cycling an external power inductor through a low-side switch. The TLE83862ELXUMA1 belongs to the Infineon TLE8386 family of automotive-grade boost controllers, positioned within the broader power management IC hierarchy as a switching controller -> DC-DC controller -> voltage regulator -> power management IC -> semiconductor.
Key features include 700 kHz adjustable switching frequency, 4.75 V to 45 V wide input range, low-side current sensing for simplified ground-referenced feedback, external synchronization capability, integrated protection such as overcurrent, overvoltage, and thermal shutdown, and AEC-Q100 automotive qualification. The exposed thermal pad on the PG-SSOP-14-EP package supports efficient heat removal from the controller IC, which is critical when operating at the upper end of the input range.
The TLE83862ELXUMA1 uses a peak-current-mode control architecture with a low-side shunt resistor for current sensing, enabling cycle-by-cycle overcurrent protection and good transient response. The switching frequency is set by a single resistor at the RT pin, providing flexibility to optimize efficiency versus component size. The device integrates a high-side gate driver capable of driving logic-level N-channel MOSFETs in boost configurations for input voltages up to 45 V.
Typical applications include automotive LED headlight boost converters, pre-boost supplies for downstream buck regulators in 12 V / 24 V automotive systems, USB-PD / Type-C adapter power stages, industrial 24 V to higher voltage rails, and battery-backed boost converters. The AEC-Q100 qualification makes it especially suited for harsh automotive environments subject to load-dump and cold-crank transients.
When designing with this part, ensure the input capacitor is sized to handle the pulsating current of the boost topology, and route the low-side current-sense traces as a Kelvin connection to the shunt resistor to preserve current-mode control accuracy. The exposed pad must be soldered to a sufficiently large copper pour to keep junction temperature within the -40 C to +125 C operating range during load-dump events.
This page synthesizes distributor pricing, drop-in alternatives from the Infineon TLE8386 family, application circuits, and practical PCB layout notes that go beyond the manufacturer datasheet.
Alternatives de remplacement direct pour TLE83862ELXUMA1 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TLE83862ELXUMA2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLE83862EU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLE8386-2EL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLE8386-2EJ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLE83862ELXUMA1-Q1
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLE83862ELXUMA1 Valeurs maximales et caractéristiques électriques
| Topologie | Boost (Step-Up), low-side current sense |
| Plage de tension d'entrée | 4.75 V to 45 V |
| Type de sortie | 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 |
| Plage de température de fonctionnement | -40 C to +125 C |
| Boîtier | PG-SSOP-14-EP (14-LSSOP with exposed pad) |
| Type de montage | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Statut RoHS | Compliant |
| Built-in Protection | Overcurrent, overvoltage, thermal shutdown (per datasheet description) |
| External Synchronization | Yes (SYNC input per datasheet) |
Configuration des broches de TLE83862ELXUMA1
| Broche 1 | SGND — Signal ground (per datasheet) |
| Broche 2 | FB — Feedback input (per datasheet) |
| Broche 3 | COMP — Compensation network node (per datasheet) |
| Broche 4 | EN — Enable input (per datasheet) |
| Broche 5 | RT — Timing resistor sets switching frequency (per datasheet) |
| Broche 6 | SYNC — External synchronization input (per datasheet) |
| Broche 7 | VCC — Internal supply / VCC (per datasheet) |
| Broche 8 | GND — Power ground (per datasheet) |
| Broche 9 | CS — Current sense input from low-side shunt (per datasheet) |
| Broche 10 | DRV — Gate driver output for external N-MOSFET (per datasheet) |
| Broche 11 | BOOT — Bootstrap supply for high-side gate drive (per datasheet) |
| Broche 12 | VIN — Input voltage / battery supply (per datasheet) |
| Broche 13 | VSUP — Supply / battery voltage sense (per datasheet) |
| Broche 14 | NC — Not connected (per datasheet) |
Applications typiques
TLE83862ELXUMA1 convient pour 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TLE83862ELXUMA1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
