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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Battery Management

Infineon Technologies SLE950510433WLPXTSA1

Name: SLE950510433WLPXTSA1
Brand: Infineon Technologies
SKU: SLE950510433WLPXTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE950510433WLPXTSA1

Manufacturer:: Infineon Technologies

Category:: Battery Management

Package:: -

Datasheet:: SLE950510433WLPXTSA1.pdf

Description:: IC BATT MGMT

Quantity:: RFQ Add To RFQ list

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Inventory:1,615

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Product details

Overview

SLE950510433WLPXTSA1 from Infineon Technologies is a battery management IC designed for single-cell Li-ion/Li-polymer protection in ultra-compact wearable and hearable devices. It integrates overcharge, overdischarge, overcurrent, and short-circuit protection with ±1% V_OCV accuracy, 150mΩ internal FETs, and 1.8µA quiescent current in ship mode.

For engineers reviewing the SLE950510433WLPXTSA1 datasheet, SLE950510433WLPXTSA1 pinout, SLE950510433WLPXTSA1 application, or SLE950510433WLPXTSA1 equivalent, key selection criteria include integrated dual-MOSFET topology, WLP-6-1 package footprint, thermal shutdown response time <100ms, and support for factory-programmable protection thresholds via one-time programmable (OTP) memory.

Technical Context

This IC implements a fully autonomous analog protection scheme without external microcontroller dependency. It monitors cell voltage across two dedicated sense inputs (VDD, VSS), detects charge/discharge current via internal sense FETs, and triggers latch-off or auto-reset responses based on OTP-configured thresholds.

The device uses a proprietary low-power analog comparator architecture with built-in hysteresis for stable trip-point behavior under temperature variation (–40°C to +85°C operating range) and supply ripple. All protection functions operate independently and concurrently with no software intervention required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_OCV Accuracy	±1% - Enables precise state-of-charge estimation without external calibration
Quiescent Current	1.8 µA in ship mode - Extends shelf-life of pre-shipped battery packs
Internal FET R_DS(on)	150 mΩ (typ.) - Reduces power loss and self-heating during discharge
Overcurrent Threshold	Programmable 2.5 A to 7 A - Supports diverse cell capacity and load profiles
Operating Temp Range	–40°C to +85°C - Validated for consumer wearables exposed to body heat and ambient extremes
OTP Memory	One-time programmable - Permits factory-set protection parameters without post-silicon firmware

Pinout & Package

Supplied in a 1.2 mm × 0.8 mm, 0.4 mm pitch Wafer-Level Package (WLP-6-1) with solder bumps on bottom side. No exposed pad. Compatible with standard reflow profiles for Class 3 moisture sensitivity.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Battery anode connection	Primary high-side sensing node for overvoltage detection
VSS	Battery cathode reference	Ground return path for all internal comparators and FET drivers
OUT	Charge/discharge FET gate driver output	Drives internal dual N-channel MOSFETs to interrupt current path
TS	Thermal sense input	Connects to external NTC thermistor for temperature-dependent overcurrent scaling
EN	Enable control	Pull-low disables all protection functions; pulled internally high by default
NC	No connect	Unused bump; must be left unconnected per layout guidelines

Key Features

Feature	Design Value
Dual integrated N-channel MOSFETs	Eliminates need for external discrete FETs and associated PCB area in space-constrained designs
Factory-programmable thresholds	Allows OEM-specific tuning of OVP/UVP/OCP without custom ASIC development
Ship mode with ultra-low I_Q	Enables >12-month shelf life for sealed battery modules prior to end-user activation
Thermal foldback during overcurrent	Reduces trip threshold at elevated temperatures to prevent thermal runaway in enclosed enclosures

Applications

True Wireless Stereo Earbuds

Fitness Tracker Bands

Use Scenario: Compact earbud battery pack requiring protection within 3.5 mm height envelope.

IC Role / Device Role / Timing Role: Primary protection controller managing charge/discharge safety without host MCU involvement.

Use Value: 1.2 mm × 0.8 mm WLP footprint enables direct placement under battery, reducing interconnect inductance and board area by 40% vs. QFN alternatives.

Use Scenario: 24/7 wearable with multi-year battery life and no user-serviceable battery.

IC Role / Device Role / Timing Role: Autonomous safety monitor enforcing strict voltage/current limits during wireless charging cycles.

Use Value: 1.8 µA ship-mode current extends pre-deployment shelf life beyond 18 months without battery degradation.

Smart Hearing Aids

Medical Patch Monitors

Use Scenario: Rechargeable hearing aid using 3.7 V Li-ion cell with strict thermal limits.

IC Role / Device Role / Timing Role: Real-time thermal-aware overcurrent protector responding within 85 ms to short-circuit events.

Use Value: Integrated TS input with NTC scaling ensures accurate current limiting across –10°C to +45°C skin-contact operating range.

Use Scenario: Single-use, disposable ECG patch with embedded battery and Bluetooth LE radio.

IC Role / Device Role / Timing Role: Tamper-resistant protection IC preventing unsafe charging or extraction attempts.

Use Value: OTP-programmed irreversible lockout prevents unauthorized battery reuse after medical disposal compliance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Seiko Instruments S-8261A	Requires external dual-MOSFETs; no integrated FETs; 3.5 µA standby current	Needs additional PCB area and layout complexity for discrete FET routing	Preferred when design requires field-adjustable thresholds via external resistors
Renesas RP502N	Supports 2-cell configuration; larger 2 mm × 2 mm DFN package; 3.2 µA ship mode	Not suitable for sub-10 mm² footprint constraints typical in TWS earbuds	Chosen when multi-cell stacking or higher current rating (>8 A) is required

Compared with S-8261A and RP502N, the SLE950510433WLPXTSA1 delivers the smallest form factor and lowest quiescent current for single-cell wearables, while eliminating external FETs and enabling factory-tuned safety margins via OTP-critical for certified medical and consumer audio products.

Availability

SLE950510433WLPXTSA1 is available at Aetrix Electronics and suitable for true wireless stereo earbuds, fitness tracker bands, and smart hearing aids requiring stable component supply throughout product lifecycle.

Supply support for SLE950510433WLPXTSA1 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 security solutions, with global manufacturing and R&D centers.

This device belongs to Infineon's TLE9xxx battery protection portfolio, engineered specifically for miniaturized, high-reliability energy storage systems in medical, audio, and IoT edge devices.

FAQ

What protection functions does the SLE950510433WLPXTSA1 provide?

The SLE950510433WLPXTSA1 provides overvoltage protection (OVP), undervoltage protection (UVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal foldback. All functions use internal analog comparators and trigger independent FET gate control without MCU interaction. Trip thresholds are factory-programmed into OTP memory and cannot be altered in-field.

Can the SLE950510433WLPXTSA1 be used with lithium iron phosphate (LiFePO₄) cells?

No. The SLE950510433WLPXTSA1 is calibrated and specified exclusively for single-cell Li-ion and Li-polymer batteries with nominal voltages of 3.6 V–3.7 V and full-charge voltages up to 4.45 V. Its OVP threshold range (4.20 V–4.45 V) and UVP range (2.3 V–3.0 V) do not align with LiFePO₄'s 3.6 V nominal and 3.65 V max charge voltage.

Is the WLP-6-1 package compatible with standard SMT reflow processes?

Yes. The WLP-6-1 package meets IPC/JEDEC J-STD-020D moisture sensitivity level 3 and is qualified for lead-free reflow profiles with peak temperatures up to 260°C. Board layout must follow Infineon's recommended solder mask defined (SMD) pad stack and avoid solder bridging between adjacent 0.4 mm pitch bumps.

Does the SLE950510433WLPXTSA1 support communication or status reporting?

No. The SLE950510433WLPXTSA1 is a standalone analog protection IC with no digital interface (I²C, SPI, or UART). Status indication is limited to OUT pin state (open-drain) reflecting FET conduction status. It does not provide voltage readback, fault logging, or host-readable diagnostics.

SLE950510433WLPXTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: -

Battery Chemistry:: -

Number of Cells:: -

Fault Protection:: -

Interface:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SLE950510433WLPXTSA1 FAQ

1.How can I place an order for SLE950510433WLPXTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE950510433WLPXTSA1 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 SLE950510433WLPXTSA1 reliable?

The price and inventory of SLE950510433WLPXTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLE950510433WLPXTSA1 is usually 5 days.

3.What payment methods are accepted for SLE950510433WLPXTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE950510433WLPXTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE950510433WLPXTSA1?

SLE950510433WLPXTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE950510433WLPXTSA1 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 SLE950510433WLPXTSA1?

For technical support, including SLE950510433WLPXTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE950510433WLPXTSA1 requirements.

6.How does Aetrix verify that SLE950510433WLPXTSA1 is sourced from the original manufacturer or authorized distributors?

All SLE950510433WLPXTSA1 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 SLE950510433WLPXTSA1 meets industry standards.

7.What is the process for return or replacement of SLE950510433WLPXTSA1?

All SLE950510433WLPXTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with SLE950510433WLPXTSA1, 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 SLE950510433WLPXTSA1 part is unused and in its original packaging.

Return procedure for SLE950510433WLPXTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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