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Renesas ISL6292-2CR5Z
- Part No.:
- ISL6292-2CR5Z
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL6292-2CR5Z.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,661
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Product details
Overview
ISL6292-2CR5Z from Renesas Electronics is a single-cell Li-ion/Li-polymer linear battery charger IC with 4.20V ±1% charge voltage regulation, programmable up to 2A constant current (via external resistor), thermal foldback protection, NTC-based temperature monitoring, and integrated pass FET - designed for USB-powered or wall-adapter-powered portable devices including medical handhelds, smartphones, and self-charging battery packs.
For engineers reviewing the ISL6292-2CR5Z datasheet, ISL6292-2CR5Z pinout, ISL6292-2CR5Z application, or ISL6292-2CR5Z equivalent, key selection considerations include its 5×5 QFN-16 package thermal performance (θJA = 34°C/W), 4.20V nominal CV threshold (vs. 4.10V for ISL6292-1 variants), end-of-charge current programmability, and dual-mode operation (linear vs. current-limited adapter support) enabling low-thermal-design flexibility.
Technical Context
The ISL6292-2CR5Z implements a CC/CV charging profile with internal 100,000:1 current mirror architecture, where IREF sets reference current and QMAIN/QSEN operate as matched pass elements. Its thermal foldback activates at +100°C (±15°C) to reduce charge current linearly at 100mA/°C, preventing junction exceedance of +150°C in space-constrained PCBs.
It integrates POR detection (3.4V rising threshold), 2.8V V2P8 reference output for adapter presence indication, open-drain STATUS/FAULT pins for system-level state reporting, and a programmable oscillator (via CTIME pin) that governs both safety timeout (22-bit counter) and trickle-charge verification timing (15-cycle lockout).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage | 4.20V ±1% - ensures precise full-charge termination for Li-ion cells without overvoltage risk. |
| Max Charge Current | 2.0A (programmable via RIREF) - supports fast charging in compact 5×5 QFN package with θJA = 34°C/W. |
| Input Voltage Range | 4.3V to 6.5V - compatible with standard 5V USB and 5V–6V wall adapters. |
| Thermal Foldback Threshold | +100°C ±15°C - initiates automatic current reduction to maintain safe junction temperature. |
| Operating Ambient Range | −20°C to +70°C - validated for industrial and consumer portable equipment environments. |
| NTC Interface | Voltage-based TEMP pin with VTMIN = 1.51V and VTMAX = 0.38V at V2P8 = 3.0V - enables accurate battery temperature window enforcement. |
| Oscillator Period | 3.0ms (typ.) with 15nF CTIME - sets 3.5-hour TIMEOUT limit and 15-cycle trickle-verify timing. |
Pinout & Package
ISL6292-2CR5Z uses a thermally enhanced 16-lead 5×5 mm QFN package (RoHS-compliant, exposed pad) with θJA = 34°C/W and θJC = 4°C/W - optimized for high-current linear charging in space-limited applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1, 15, 16) | Input power supply input | Accepts 4.3–6.5V adapter/USB input; multiple pins reduce trace resistance and improve thermal path. |
| FAULT (Pin 2) | Open-drain fault indicator | Pulled LOW on battery removal, over-temperature, or TIMEOUT fault - requires external pull-up for system interrupt. |
| STATUS (Pin 3) | Open-drain charge status indicator | Pulled LOW during active charging; transitions HIGH and latches at EOC - signals host MCU when CV mode completes. |
| TIME (Pin 4) | Oscillator timing capacitor node | Connects to GND via CTIME (e.g., 15nF) to set 3.5-hour TIMEOUT and 15-cycle trickle verification period. |
| GND (Pin 5) | System ground reference | Primary ground return; ties to exposed thermal pad for optimal heat dissipation. |
| TOEN (Pin 6) | Timeout enable control | Pulled HIGH or floating enables 3.5-hour fast-charge safety timer; pulled LOW disables TIMEOUT (converts to LDO mode). |
| EN (Pin 7) | Charger enable logic input | Leave floating to enable; tie to GND to disable - supports host-controlled charge initiation. |
| V2P8 (Pin 8) | 2.8V reference output | Indicates adapter presence above POR threshold; sources 2mA - usable for biasing external circuits or ADC reference. |
| IREF (Pin 9) | Constant current programming input | Resistor-connected (e.g., 80kΩ → 1.0A) or logic-driven (≥1.3V → 500mA) - defines CC level via internal 100,000:1 current mirror. |
| IMIN (Pin 10) | End-of-charge current threshold input | Resistor-to-GND (e.g., 80kΩ → 110mA) or tied to V2P8 (→ 1/10 × IREF) - sets EOC current detection level for STATUS transition. |
| TEMP (Pin 11) | NTC thermistor interface | Monitors battery temperature via voltage divider with NTC; also detects battery removal via voltage shift. |
| VBAT (Pins 12–14) | Battery connection node | Direct connection to cell anode; multiple pins minimize IR drop and enhance thermal conduction to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass FET and current sense | Eliminates need for external MOSFET, blocking diode, or current-sense resistor - reduces BOM count and layout area. |
| Programmable 4.20V charge voltage | 1% accuracy across −20°C to +70°C - matches Li-ion cell chemistry requirements without calibration. |
| Thermal foldback with 100mA/°C gain | Automatically scales back charge current above +100°C - enables reliable operation on small PCBs without heatsinks. |
| Adapter-agnostic operation | Supports both voltage-source (linear mode) and current-limited (switched-LDO mode) inputs - simplifies adapter selection. |
| Trickle preconditioning & auto-recharge | Applies 10% IREF until VBAT ≥ 2.8V (15-cycle verified); reinitiates charge when VBAT drops below 4.0V - prevents deep discharge damage. |
Applications
| Medical Handheld Devices | Smartphones & Feature Phones |
|---|---|
|
Use Scenario: Portable ultrasound, glucose meters, and infusion pumps requiring certified, low-thermal, single-cell Li-ion charging in sealed enclosures. IC Role / Device Role / Timing Role: Primary linear charger IC managing CC/CV profile, NTC-based thermal safety, and adapter presence detection via V2P8. Use Value: Enables compliance with IEC 60601-1 thermal limits using only the ISL6292-2CR5Z's integrated foldback and 34°C/W QFN package - no external thermal sensors or firmware intervention needed. |
Use Scenario: Compact mobile phones with USB-C or proprietary wall adapters where board space and thermal headroom are constrained. IC Role / Device Role / Timing Role: System-level battery management unit providing charge control, status signaling (STATUS/FAULT), and safety timer enforcement. Use Value: Delivers 2A fast charge with <140mV dropout at 0.5A while maintaining <85°C junction under continuous load - avoids thermal throttling during video recording or gaming. |
| USB-Powered Portable Instruments | Self-Charging Battery Packs |
|
Use Scenario: Handheld oscilloscopes, multimeters, and spectrum analyzers drawing power directly from USB hosts or hubs. IC Role / Device Role / Timing Role: Dual-role power manager: charges internal Li-ion cell from USB 5V while regulating V2P8 for system bias and STATUS for host notification. Use Value: Supports USB 500mA/100mA port classification via IREF logic levels - ensures safe operation on low-power USB ports without violating USB specs. |
Use Scenario: Swappable battery packs for power tools or drones that must charge autonomously when docked, without host MCU involvement. IC Role / Device Role / Timing Role: Standalone smart charger IC implementing full CC/CV, auto-recharge, and TIMEOUT-based fault recovery - operates unattended. Use Value: Eliminates need for microcontroller-based charging logic; TIMEOUT reset via EN toggle allows full recovery from dead-battery conditions without manual intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-ion linear charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24075RGTR | 4.2V CV, 1.5A max, no thermal foldback, 16-pin QFN but smaller 4×4 mm footprint | Lacks integrated thermal foldback and adapter-agnostic mode - requires external thermal monitoring for high-current use. | Choose for cost-sensitive designs with adequate PCB copper area and fixed 5V adapter supply. |
| MP2617GQBE | 4.2V CV, 2A max, includes integrated MOSFETs but no NTC interface or V2P8 reference | No battery temperature monitoring or adapter presence indication - unsuitable for medical or safety-critical thermal zones. | Prefer when system already provides temperature sensing and needs minimal external components beyond current-setting resistors. |
Compared with BQ24075RGTR and MP2617GQBE, the ISL6292-2CR5Z uniquely combines 2A programmability, on-die thermal foldback, NTC interface, and V2P8 reference in a single 5×5 QFN - making it optimal for thermally constrained, safety-aware, adapter-flexible portable systems.
Availability
ISL6292-2CR5Z is available at Aetrix Electronics and suitable for medical handhelds, smartphones, USB-powered instruments, and self-charging battery packs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6292-2CR5Z 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
Renesas Electronics is a global semiconductor leader delivering high-performance analog, power, and embedded processing solutions for industrial, automotive, and consumer markets.
The ISL6292 product line delivers highly integrated, thermally robust linear Li-ion chargers targeting portable electronics where space, safety, and adapter flexibility are critical - exemplified by the ISL6292-2CR5Z's 4.20V precision, 2A capability, and QFN-16 thermal design.
FAQ
What is the exact charge voltage accuracy and tolerance of the ISL6292-2CR5Z?
The ISL6292-2CR5Z provides a nominal 4.20V constant-voltage charge output with ±1% accuracy across the full operating temperature range (−20°C to +70°C) and input voltage range (4.3V to 6.5V). This specification is guaranteed per the Electrical Specifications table on page 6 of FN9105 Rev.10.00, ensuring reliable full-charge termination for standard Li-ion cells without overvoltage stress. The ISL6292-2CR5Z achieves this via laser-trimmed internal references and process-compensated bandgap design.
How does the ISL6292-2CR5Z handle thermal management during high-current charging?
The ISL6292-2CR5Z implements charge current thermal foldback starting at +100°C (±15°C), reducing current at 100mA/°C to prevent junction temperatures exceeding +150°C. This behavior is intrinsic to the die and requires no external circuitry. In its 5×5 QFN package (θJA = 34°C/W), the ISL6292-2CR5Z sustains 2A charging under typical ambient conditions, with foldback engaging only under sustained overload or poor PCB thermal design. The ISL6292-2CR5Z datasheet confirms this in Figure 9 and the "Charge Current Thermal Foldback" section.
Can the ISL6292-2CR5Z operate with a current-limited USB adapter, and how does it behave differently than with a voltage-source adapter?
Yes - the ISL6292-2CR5Z supports both voltage-source (e.g., 5V wall adapter) and current-limited (e.g., USB 500mA port) inputs. With current-limited sources, the ISL6292-2CR5Z transitions QMAIN into a low-rDS(ON) switch rather than a linear regulator, reducing power dissipation significantly during CC mode. This dual-mode behavior is documented in Figures 19–20 and the "Theory of Operation" section of FN9105. The ISL6292-2CR5Z maintains identical CC/CV control regardless of source type.
What is the function of the TOEN pin on the ISL6292-2CR5Z, and what happens when it is grounded?
The TOEN (Timeout Enable) pin on the ISL6292-2CR5Z controls activation of the 3.5-hour fast-charge safety timer. When pulled LOW (e.g., tied to GND), the TIMEOUT limit is disabled, converting the ISL6292-2CR5Z into a current-limited LDO regulated at 4.20V - useful for powering systems directly from the battery input. Trickle-charge timing remains active and unaffected. This behavior is specified in the Pin Descriptions (page 5) and "Disabling TIMEOUT Limit" section (page 13) of the ISL6292-2CR5Z datasheet.
How is end-of-charge (EOC) determined and signaled by the ISL6292-2CR5Z?
The ISL6292-2CR5Z declares end-of-charge when two conditions are met: (1) battery voltage exceeds the recharge threshold (4.0V for ISL6292-2 variants), and (2) charge current falls below the IMIN threshold (e.g., 110mA with RIMIN = 80kΩ). Upon EOC qualification, the open-drain STATUS pin releases its LOW state and rises HIGH (latched). Charging continues until TIMEOUT expires, but STATUS indicates readiness. This logic is detailed in the "End-of-Charge (EOC) Current" section (page 14) and confirmed in Figure 21 of the ISL6292-2CR5Z datasheet.
ISL6292-2CR5Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- -
- Fault Protection:
- -
- Charge Current - Max:
- 2A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 6.5V
- Interface:
- USB
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (5x5)
ISL6292-2CR5Z FAQ
1.How can I place an order for ISL6292-2CR5Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6292-2CR5Z 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 ISL6292-2CR5Z reliable?
The price and inventory of ISL6292-2CR5Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6292-2CR5Z is usually 5 days.
3.What payment methods are accepted for ISL6292-2CR5Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6292-2CR5Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6292-2CR5Z?
ISL6292-2CR5Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6292-2CR5Z 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 ISL6292-2CR5Z?
For technical support, including ISL6292-2CR5Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6292-2CR5Z requirements.
6.How does Aetrix verify that ISL6292-2CR5Z is sourced from the original manufacturer or authorized distributors?
All ISL6292-2CR5Z 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 ISL6292-2CR5Z meets industry standards.
7.What is the process for return or replacement of ISL6292-2CR5Z?
All ISL6292-2CR5Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL6292-2CR5Z, 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 ISL6292-2CR5Z part is unused and in its original packaging.
Return procedure for ISL6292-2CR5Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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