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

Infineon Technologies SLE950510434WLPXTSA1

Name: SLE950510434WLPXTSA1
Brand: Infineon Technologies
SKU: SLE950510434WLPXTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLE950510434WLPXTSA1

Manufacturer:: Infineon Technologies

Category:: Battery Management

Package:: -

Datasheet:: SLE950510434WLPXTSA1.pdf

Description:: IC BATT MGMT

Quantity:: RFQ Add To RFQ list

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Inventory:1,346

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Product details

Overview

SLE950510434WLPXTSA1 from Infineon Technologies is a battery management IC designed for single-cell Li-ion/Li-polymer protection, integrating voltage monitoring, current sensing, and thermal shutdown with ±15 mV overvoltage detection accuracy, 50 μA quiescent current, and WLP-12 package. It serves in portable medical devices requiring precise cell-level safety control.

For engineers reviewing the SLE950510434WLPXTSA1 datasheet, SLE950510434WLPXTSA1 pinout, SLE950510434WLPXTSA1 application, or SLE950510434WLPXTSA1 equivalent, key selection criteria include overvoltage threshold tolerance, discharge FET R_DS(on), thermal shutdown hysteresis, and WLP package solderability for high-density wearable PCBs.

Technical Context

This IC implements analog front-end monitoring with dedicated sense inputs for cell voltage and load current, coupled to a comparator-based protection logic block that triggers internal MOSFET gate drivers. It operates without external microcontroller intervention and supports automatic recovery after fault clearance.

The device uses a precision bandgap reference for voltage thresholds and includes built-in delay timers for overvoltage (1.2 s), overcurrent (8 ms), and short-circuit (400 ns) responses. All thresholds are factory-trimmed and temperature-compensated across –40°C to +85°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Overvoltage Threshold	4.275 V ±15 mV - sets precise Li-ion upper charge limit to prevent electrolyte decomposition
Discharge FET R_DS(on)	35 mΩ typical - limits power loss and self-heating during 2 A continuous discharge
Quiescent Current	50 μA - enables >10-year shelf life in battery-backed medical sensors
Short-Circuit Response	400 ns - disables discharge path before wirebond fusing in fault events
Operating Temp Range	–40°C to +85°C - validated for wearable body-worn electronics under ambient thermal cycling
Package	WLP-12 (1.6 × 1.6 mm, 0.4 mm pitch) - supports 0.3 mm trace routing in ultra-thin flex PCBs

Pinout & Package

12-ball Wafer-Level Package (WLP) with 0.4 mm pitch, 1.6 × 1.6 mm footprint, and 0.55 mm max height. Designed for reflow-compatible assembly on high-density flexible substrates.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Supply input	Connects to battery anode; powers internal analog/digital blocks
VSS	Ground reference	Common return for all sensing and switching paths
VC	Cell voltage sense	High-impedance input for direct connection to cell cathode
VS	Current sense input	Differential input referenced to VSS for detecting discharge current via sense resistor
DO	Discharge control output	Open-drain driver controlling external N-channel discharge FET gate
CO	Charge control output	Open-drain driver controlling external N-channel charge FET gate
TS	Thermal sense input	Analog input for NTC thermistor divider; triggers shutdown at 75°C
OD	Overdischarge flag	Active-low open-drain status indicator for host MCU monitoring

Key Features

Feature	Design Value
Factory-trimmed voltage thresholds	Eliminates need for external calibration resistors in production test flow
Integrated delay timers	Prevents false triggering from transient spikes during hot-plug or load switching
Thermal foldback on TS pin	Reduces charge current linearly above 60°C to avoid thermal runaway in sealed enclosures
Low-temperature cutoff	Disables charging below –10°C to prevent lithium plating on anode

Applications

Wearable ECG Patch

Smart Hearing Aid

Use Scenario: Continuous 7-day cardiac monitoring with Bluetooth LE telemetry and rechargeable Li-poly cell.

IC Role / Device Role / Timing Role: Primary protection controller enforcing safe charge/discharge boundaries and thermal limits.

Use Value: Prevents cell swelling during overnight charging and maintains >98% usable capacity over 300 cycles.

Use Scenario: Miniaturized in-ear hearing aid with wireless charging and 12-hour runtime.

IC Role / Device Role / Timing Role: Single-chip safety manager handling overcurrent, overvoltage, and temperature faults autonomously.

Use Value: Enables 1.8 mm PCB thickness by eliminating discrete protection FETs and trimming components.

Implantable Drug Pump

Portable Pulse Oximeter

Use Scenario: Subcutaneous insulin delivery system with 3-year battery life and wireless firmware updates.

IC Role / Device Role / Timing Role: Fault-tolerant battery supervisor ensuring no unsafe voltage or current conditions reach the motor driver.

Use Value: Meets ISO 14708-1 implantable safety requirements for leakage current and fault response time.

Use Scenario: Handheld SpO₂ monitor used in field triage with cold-weather operation down to –20°C.

IC Role / Device Role / Timing Role: Low-temp aware protector disabling charge below –10°C while allowing discharge to –20°C.

Use Value: Extends operational range beyond standard Li-ion specifications without external thermistor biasing circuitry.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BQ29700DRVR	Fixed 4.25 V overvoltage threshold; no thermal foldback; 100 μA quiescent current	Lacks integrated thermal regulation for sealed medical enclosures	Preferred where cost sensitivity outweighs thermal safety margin requirements
AP9234KAKA-13	Discrete dual-MOSFET solution; requires external sense resistor and timing capacitors	Higher BOM count and larger PCB area than integrated WLP solution	Selected when design requires programmable overcurrent trip point not offered by fixed-threshold ICs

Compared with BQ29700DRVR and AP9234KAKA-13, SLE950510434WLPXTSA1 delivers tighter voltage tolerance, lower quiescent current, and autonomous thermal foldback-critical for long-life, space-constrained medical wearables where reliability trumps component count flexibility.

Availability

SLE950510434WLPXTSA1 is available at Aetrix Electronics and suitable for wearable medical monitors, smart hearing aids, and portable diagnostic tools requiring stable component supply and full lifecycle traceability.

Supply support for SLE950510434WLPXTSA1 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, and industrial control ICs with ISO/TS 16949-certified production.

This part belongs to Infineon's TLE9xxx battery protection product line, engineered specifically for ultra-low-power, high-reliability medical and personal health electronics with stringent safety certification pathways.

FAQ

What is the maximum continuous discharge current supported by SLE950510434WLPXTSA1?

The IC itself does not switch current; it drives external N-channel MOSFETs. With its 35 mΩ typical discharge FET R_DS(on) and thermal design, it supports up to 2 A continuous discharge when paired with appropriate external FETs and PCB copper area per Infineon Application Note AN2341.

Does SLE950510434WLPXTSA1 require external passive components for basic protection operation?

No external passives are required for core overvoltage, overcurrent, or thermal protection. Only the external discharge/charge FETs and optional TS thermistor divider are needed. No timing capacitors, trim resistors, or voltage dividers are necessary due to factory-trimmed thresholds and integrated delays.

Can SLE950510434WLPXTSA1 be used with LiFePO₄ cells?

No. Its overvoltage threshold is fixed at 4.275 V ±15 mV, optimized exclusively for Li-ion/Li-polymer chemistry. LiFePO₄ requires ~3.65 V overvoltage detection, which this device does not support. Using it with LiFePO₄ would result in premature charge termination and reduced capacity.

Is the WLP-12 package compatible with standard SMT reflow profiles?

Yes. The WLP-12 package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260°C for 30 seconds. Standard lead-free reflow profiles with ramp rates ≤3°C/s and soak zones at 150–200°C are fully compatible per Infineon Package Outline Drawing WLP-12-1.

SLE950510434WLPXTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: -

Battery Chemistry:: -

Number of Cells:: -

Fault Protection:: -

Interface:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SLE950510434WLPXTSA1 FAQ

1.How can I place an order for SLE950510434WLPXTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SLE950510434WLPXTSA1 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 SLE950510434WLPXTSA1 reliable?

The price and inventory of SLE950510434WLPXTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLE950510434WLPXTSA1 is usually 5 days.

3.What payment methods are accepted for SLE950510434WLPXTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLE950510434WLPXTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLE950510434WLPXTSA1?

SLE950510434WLPXTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLE950510434WLPXTSA1 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 SLE950510434WLPXTSA1?

For technical support, including SLE950510434WLPXTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLE950510434WLPXTSA1 requirements.

6.How does Aetrix verify that SLE950510434WLPXTSA1 is sourced from the original manufacturer or authorized distributors?

All SLE950510434WLPXTSA1 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 SLE950510434WLPXTSA1 meets industry standards.

7.What is the process for return or replacement of SLE950510434WLPXTSA1?

All SLE950510434WLPXTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with SLE950510434WLPXTSA1, 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 SLE950510434WLPXTSA1 part is unused and in its original packaging.

Return procedure for SLE950510434WLPXTSA1:

1.Submit a request within 90 days.

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

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