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Infineon Technologies TLE83862ELXUMA1
- Part No.:
- TLE83862ELXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- DC DC Switching Controllers
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE83862ELXUMA1.pdf
- Description:
- IC REG CTRLR BOOST 14-SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,992
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Product details
Overview
TLE83862ELXUMA1 from Infineon Technologies is a basic smart boost controller IC designed for automotive-grade step-up DC-DC conversion, featuring constant current and voltage regulation, 100–700 kHz adjustable switching frequency, internal 5 V LDO, and output overvoltage protection. It operates across 4.75 V to 45 V input, delivers <2 µA shutdown current, and integrates soft-start, thermal shutdown, and current-sense-based peak-current-mode control.
For engineers reviewing the TLE83862ELXUMA1 datasheet, TLE83862ELXUMA1 pinout, TLE83862ELXUMA1 application, or TLE83862ELXUMA1 equivalent, this controller supports cold-cranking voltage stabilization, SEPIC/Flyback topologies, and harsh-environment automotive power management where precision regulation, fault resilience, and thermal robustness are critical.
Technical Context
The TLE83862ELXUMA1 implements a current-mode PWM architecture with slope compensation and leading-edge blanking to stabilize the control loop under variable load and input conditions. Its integrated error amplifier compares feedback voltage (via FB pin) against an internal 2.5 V reference, while COMP pin accepts external RC compensation for loop stability tuning.
It features dual regulation modes-constant current via SWCS current-sense input and constant voltage via FB divider-and supports synchronization (SYNC pin), frequency programming (FREQ pin with resistor-to-GND), and enable-controlled ultra-low-power shutdown (<2 µA). The IVCC pin supplies gate drive and internal bias from an integrated 5 V LDO fed by IN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.75 V to 45 V - Supports wide automotive battery range including cold crank (4.75 V) and load dump (45 V). |
| Switching Frequency | 100 kHz to 700 kHz - Adjustable via FREQ pin resistor; enables EMI optimization and inductor size trade-off. |
| Shutdown Current | <2 µA - Achieved via EN pin logic high disable; critical for battery-sensitive always-on systems. |
| Internal LDO Output | 5 V ±2% - Powers internal circuitry and MOSFET gate driver; requires external bypass capacitor on IVCC. |
| Feedback Reference | 2.5 V - Precision internal reference for FB-based output voltage regulation; sets VOUT = 2.5 × (1 + R1/R2). |
| Current Sense Threshold | 100 mV - Fixed threshold at SWCS pin for peak current limiting; defines maximum switch current. |
| Operating Junction Temp | −40 °C to +150 °C - Qualified per AEC-Q100 Grade 0; enables under-hood deployment without derating. |
Pinout & Package
Package: PG-SSOP-14 (thermally enhanced, exposed pad soldered to GND for improved thermal dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IVCC | Internal LDO output | Bypassed with capacitor; powers internal logic and gate driver - must not be loaded externally. |
| 2 SWO | Switch gate driver output | Drives external N-channel MOSFET gate; open-drain with internal pull-down during shutdown. |
| 3 SGND | Current sense ground | Return path for SWCS sensing; must connect to bottom of current-sense resistor to avoid noise coupling. |
| 4 SWCS | Peak current sense input | Detects switch current via high-side sense resistor; triggers cycle-by-cycle current limit at 100 mV. |
| 5 SST | Soft-start timing input | External capacitor sets ramp time; prevents inrush current and output overshoot at startup. |
| 6 FB | Voltage feedback input | Connects to resistor divider from output; regulates VOUT using internal 2.5 V reference. |
| 8 COMP | Loop compensation node | Accepts RC network to set pole/zero locations; stabilizes voltage and current regulation loops. |
| 10 SYNC | External clock sync input | Accepts TTL/CMOS clock signal to synchronize switching; left open if unused. |
| 11 FREQ | Frequency programming input | Resistor-to-GND sets fSW from 100–700 kHz; enables EMI compliance and layout flexibility. |
| 12 GND | Power ground | Main system ground return; exposed pad must be soldered to PCB GND plane for thermal and EMI performance. |
| 13 EN | Enable control input | Logic-high (>2 V) enables operation; logic-low disables IC and reduces quiescent current to <2 µA. |
| 14 IN | Main supply input | Primary power source (4.75–45 V); feeds internal LDO and bias circuits; requires local bulk capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant current + constant voltage regulation | Enables dual-loop control for battery charging or LED driver applications requiring both IOUT and VOUT limits. |
| Integrated 5 V LDO with IVCC output | Eliminates need for external bias supply; powers internal circuitry and provides clean gate drive for external MOSFET. |
| Adjustable soft start via external capacitor | Prevents inrush current and output voltage overshoot during power-up; configurable ramp time avoids stress on output caps. |
| Output overvoltage protection (OVP) | Shuts down SWO if FB exceeds safe threshold; protects downstream loads from transient overvoltage events. |
| Overtemperature shutdown | Halts switching when junction temperature exceeds +150 °C; latches off until thermal recovery and EN toggle. |
Applications
| Automotive Cold-Crank Stabilization | LED Driver for Headlamp Systems |
|---|---|
|
Use Scenario: Maintains stable 12 V rail during engine cranking when battery voltage drops to 4.75 V. IC Role / Device Role / Timing Role: Boost controller regulating output voltage and current in a synchronous step-up topology. Use Value: Ensures uninterrupted operation of safety-critical ECUs and sensors despite severe input sag. |
Use Scenario: Drives high-brightness LED arrays in adaptive front lighting systems (AFS) requiring precise current control. IC Role / Device Role / Timing Role: Constant-current boost controller with OVP and thermal shutdown for reliable LED biasing. Use Value: Delivers consistent luminance across temperature and input variation while protecting LEDs from overvoltage faults. |
| SEPIC Converter for Start-Stop Systems | Flyback Power Supply for Body Control Modules |
|
Use Scenario: Provides non-inverting buck-boost regulation in 12 V start-stop vehicles where input may exceed or fall below output. IC Role / Device Role / Timing Role: Primary controller managing SEPIC power stage with current-mode feedback and soft-start. Use Value: Enables seamless transition between engine-on and engine-off states without output interruption or reset. |
Use Scenario: Generates isolated auxiliary rails (e.g., 5 V, 3.3 V) for microcontrollers and CAN transceivers in BCMs. IC Role / Device Role / Timing Role: Flyback controller implementing primary-side regulation with synchronized switching and OVP. Use Value: Reduces BOM count by eliminating optocoupler feedback while meeting automotive isolation and reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5122MT/NOPB | Wider VIN (3–75 V), higher max fSW (2 MHz), no integrated LDO; requires external bias supply. | Supports higher input transients but lacks built-in 5 V LDO and automotive qualification (AEC-Q100 not claimed). | Select when >45 V input tolerance or >700 kHz switching is required; verify external bias design and qualification status. |
| MAX17690ATP+T | Fixed 2.5 V reference, no SYNC input, lower max fSW (1 MHz), includes integrated high-side MOSFET driver only. | Targeted at industrial DC-DC modules; lacks OVP, thermal shutdown latch, and AEC-Q100 qualification. | Choose for cost-sensitive industrial designs where automotive reliability and protection features are not mandatory. |
Compared with LM5122MT/NOPB and MAX17690ATP+T, the TLE83862ELXUMA1 uniquely combines AEC-Q100 qualification, integrated 5 V LDO, output overvoltage protection, and cold-crank capability - making it the only option qualified for direct integration into safety-critical automotive power rails without additional supervision circuitry.
Availability
TLE83862ELXUMA1 is available at Aetrix Electronics and suitable for automotive cold-cranking stabilization, LED headlamp drivers, and start-stop SEPIC converters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TLE83862ELXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and automotive qualification leadership.
The TLE83862ELXUMA1 belongs to Infineon's OPTIREG™ switcher product line, engineered specifically for robust, high-reliability DC-DC conversion in automotive environments - emphasizing fault resilience, thermal stability, and seamless integration with external power stages.
FAQ
What is the function of the IVCC pin, and can it power external circuitry?
The IVCC pin is the output of the internal 5 V LDO and supplies bias and gate drive for the IC itself. It must be bypassed with a ceramic capacitor (typically 100 nF) to GND but must not power external circuitry - doing so risks regulation instability and violates the datasheet requirement to "not connect other circuitry to this pin."
How does the TLE83862ELXUMA1 implement overvoltage protection?
OVP is implemented by monitoring the FB pin voltage: if it exceeds a threshold corresponding to ~110% of nominal output (e.g., >2.75 V for a 2.5 V reference), the IC disables SWO output and enters latched shutdown. Recovery requires toggling the EN pin after fault removal and thermal cooldown.
Can the TLE83862ELXUMA1 operate in discontinuous conduction mode (DCM)?
Yes - its current-mode control architecture inherently supports DCM operation at light loads. The peak-current limit remains active, and the controller automatically extends off-time to maintain regulation, enabling high efficiency across full load range without requiring external DCM detection circuitry.
Is the exposed thermal pad electrically connected, and how should it be handled on the PCB?
The exposed pad is internally connected to GND and must be soldered to a dedicated PCB GND plane with multiple thermal vias. This connection is essential for both thermal dissipation (reducing RθJA) and EMI suppression - floating or unconnected pads violate the PG-SSOP-14 mechanical specification and risk thermal runaway or noise coupling.
TLE83862ELXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 45V
- Frequency - Switching:
- 100kHz ~ 700kHz
- Duty Cycle (Max):
- 93%
- Synchronous Rectifier:
- No
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-EP
TLE83862ELXUMA1 FAQ
1.How can I place an order for TLE83862ELXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE83862ELXUMA1 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 TLE83862ELXUMA1 reliable?
The price and inventory of TLE83862ELXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE83862ELXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE83862ELXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE83862ELXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE83862ELXUMA1?
TLE83862ELXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE83862ELXUMA1 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 TLE83862ELXUMA1?
For technical support, including TLE83862ELXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE83862ELXUMA1 requirements.
6.How does Aetrix verify that TLE83862ELXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE83862ELXUMA1 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 TLE83862ELXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE83862ELXUMA1?
All TLE83862ELXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE83862ELXUMA1, 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 TLE83862ELXUMA1 part is unused and in its original packaging.
Return procedure for TLE83862ELXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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