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Renesas ISL9203CRZR5220
- Part No.:
- ISL9203CRZR5220
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL9203CRZR5220.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,011
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Product details
Overview
ISL9203CRZR5220 from Intersil is a single-cell Li-ion/Li-polymer linear battery charger IC with programmable constant-current up to 1.5A, 1% voltage regulation accuracy at 4.2V, thermal foldback activation at 100°C, and integrated pass element in a thermally enhanced 3x3 DFN package. It operates from input voltages as low as 2.65V after startup and supports both voltage-source and current-limited AC adapters for handheld medical devices and portable instruments.
For engineers reviewing the ISL9203CRZR5220 datasheet, ISL9203CRZR5220 pinout, ISL9203CRZR5220 application, or ISL9203CRZR5220 equivalent, key selection criteria include CC/CV charge profile compliance, V2P8 2.8V bias output capability, STATUS open-drain logic signaling, thermal foldback behavior under PCB space constraints, and IREF-based current programming with external resistor.
Technical Context
The ISL9203CRZR5220 implements a dual-mode linear charging architecture: it functions as a traditional CC/CV linear regulator with external IREF resistor programming when powered by a voltage-source adapter, and transitions to a quasi-switching mode-where the main MOSFET operates fully on-when driven by a current-limited adapter, reducing power dissipation during constant-current phase.
Its internal block includes a 100,000:1 current mirror (QMAIN:QSEN), precision 0.8V IREF reference, programmable oscillator (TOSC = 0.2×CTIME μs), and temperature-sensing circuitry that injects 1μA/°C into the current error amplifier above 100°C to achieve 100mA/°C charge current foldback-ensuring safe operation without external thermal management components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage Accuracy | ±1% (4.158–4.242V) - ensures full Li-ion cell capacity without overvoltage stress or premature termination |
| Max Charge Current | 1.5A programmable via IREF resistor - supports fast charging for sub-2000mAh batteries in compact layouts |
| Input Voltage Range | 4.3V to 6.5V operating; starts at VIN ≥ 3.4V, sustains down to 2.65V - enables compatibility with USB-powered and legacy wall adapters |
| Thermal Foldback Threshold | 100°C ±15% - activates automatic current reduction before junction temperature reaches 150°C limit |
| V2P8 Output | 2.7–3.1V @ 2mA load - provides stable bias for NTC circuits or adapter presence detection |
| STATUS Output Type | Open-drain, logic-low during charge - requires external pull-up; latched high at EOC until recharge or EN toggle |
| Quiescent Current (Shutdown) | ≤30μA with EN = GND - minimizes battery drain during system standby |
Pinout & Package
ISL9203CRZR5220 is housed in a thermally enhanced 10-lead 3×3 mm DFN package (PKG DWG # L10.3x3) with exposed metal pad for PCB thermal conduction. Pin 2 (NC) is not connected and must remain unconnected per datasheet guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Input power supply | Accepts 4.3–6.5V adapter input; POR rising threshold at 3.4V enables reliable startup |
| NC (2) | No connection | Not internally bonded - must be left floating or grounded per layout best practice |
| STATUS (3) | Open-drain charge status indicator | Pulled low during active charge; high-impedance latch at EOC; requires external pull-up |
| TIME (4) | Oscillator timing node | Connects to CTIME capacitor (e.g., 15nF → 3ms period) for internal timing and trickle verification cycles |
| GND (5) | Power and signal reference | Must connect to low-impedance ground plane; ties to exposed thermal pad |
| EN (6) | Enable control input | Logic-high (≥2.0V) or floating enables charge; pulled low disables with ≤30μA quiescent draw |
| V2P8 (7) | 2.8V reference output | Stable bias source for external circuits; indicates adapter presence when VIN > 3.4V |
| IREF (8) | Current programming node | Maintains 0.8V reference; RIREF sets CC current as ICHARGE = (0.8V / RIREF) × 10⁵ |
| VSEN (9) | Remote battery voltage sense | Connects near battery pack + terminal to compensate for PCB trace IR drop |
| VBAT (10) | Battery connection | Drives single-cell Li-ion/Li-Po; requires 0.1μF ceramic cap if battery present |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass MOSFET + current sense | Eliminates need for external blocking diode or discrete FET; reduces BOM count and layout area |
| Trickle preconditioning | Automatically applies 10% of programmed CC current until VBAT ≥ 2.8V - safely recovers over-discharged cells |
| Adapter-agnostic operation | Works with both voltage-source (e.g., 5V USB) and current-limited (e.g., 500mA wall adapters) inputs without reconfiguration |
| Thermally enhanced DFN | θJC = 4°C/W enables >1W dissipation on standard 2-layer PCBs - avoids heatsinks in space-constrained designs |
| RoHS-compliant Pb-free+anneal | Matte tin termination compatible with SnPb and lead-free reflow profiles - supports mixed-technology assembly |
Applications
| Medical Handheld Devices | Smartphones & PDAs |
|---|---|
Use Scenario: Portable ultrasound or glucose monitors requiring safe, autonomous battery charging from variable-input adapters. IC Role / Device Role / Timing Role: Single-cell Li-ion charger managing CC/CV profile, thermal foldback, and adapter presence detection via V2P8. Use Value: Enables certified medical-grade charging without external thermal sensors or complex firmware control. | Use Scenario: Compact consumer electronics where board space limits discrete charger solutions. IC Role / Device Role / Timing Role: Integrated linear charger providing 1.5A fast charge with STATUS-driven LED indication and EN-controlled shutdown. Use Value: Reduces component count by eliminating external MOSFET, current sense resistor, and diode - accelerating time-to-market. |
| USB Bus-Powered Chargers | Self-Charging Battery Packs |
Use Scenario: Portable power banks or accessories drawing power directly from USB 2.0/3.0 ports (max 500mA/900mA). IC Role / Device Role / Timing Role: Adaptive charger operating in current-limited mode to minimize thermal rise while maintaining full CC/CV compliance. Use Value: Delivers regulated 4.2V charge without derating or thermal throttling - even with minimal copper area on USB-facing PCBs. | Use Scenario: Swappable battery modules with embedded charging circuitry for industrial tools or drones. IC Role / Device Role / Timing Role: Standalone charger IC enabling hot-swap capable packs with VSEN remote sensing and STATUS-driven host communication. Use Value: Supports accurate battery voltage monitoring across connector resistance - critical for state-of-charge estimation in modular systems. |
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 | Higher max input voltage (16V), integrated LDO for system power, no V2P8 output | Supports higher-voltage adapters and powers system rail simultaneously; lacks dedicated adapter-detect bias | Select when dual-rail (battery + system) power delivery is required and thermal foldback is managed externally |
| MAX8854ETA+ | Fixed 1A charge current, no IREF programming, lower thermal foldback threshold (95°C) | Simpler design with no external resistor tuning; less flexible for varying battery capacities | Select for cost-sensitive, fixed-capacity applications where 1A suffices and tighter thermal margin is acceptable |
Compared with BQ24075RGTR and MAX8854ETA+, the ISL9203CRZR5220 offers unique V2P8 adapter-detection bias, precise IREF-based current scaling up to 1.5A, and field-proven thermal foldback at 100°C - making it optimal for space-constrained, adapter-flexible portable medical and instrumentation designs.
Availability
ISL9203CRZR5220 is available at Aetrix Electronics and suitable for medical handhelds, smartphones, USB bus-powered chargers, and self-charging battery packs requiring stable component supply across production lifecycles.
Supply support for ISL9203CRZR5220 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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and portable applications.
The ISL9203CRZR5220 belongs to Intersil's battery management product line, designed specifically for compact, thermally constrained single-cell Li-ion charging in portable medical and consumer electronics.
FAQ
What is the minimum input voltage required for ISL9203CRZR5220 to begin charging?
The ISL9203CRZR5220 guarantees operation down to VIN = 2.65V after startup, with a typical power-on reset (POR) rising threshold of 3.4V. Below 2.65V, the device ceases regulation and enters undervoltage lockout. This allows reliable charging from weak or aging adapters while maintaining safety margins defined in the FN9242 datasheet.
How does the ISL9203CRZR5220 handle over-discharged batteries?
The ISL9203CRZR5220 automatically initiates trickle charging at 10% of the programmed constant-current value when VSEN falls below 2.8V (VMIN). It verifies battery readiness over 15 internal oscillator cycles before transitioning to full CC mode - preventing damage to deeply discharged Li-ion cells and ensuring safe recovery without host MCU intervention.
Can the ISL9203CRZR5220 be used with current-limited adapters, and how does it behave?
Yes - the ISL9203CRZR5220 is explicitly designed for current-limited adapters. When adapter current is insufficient to meet IREF demand, the main MOSFET saturates, reducing power dissipation to I²×RDS(ON) instead of (VIN−VBAT)×I. This quasi-switching behavior minimizes thermal stress while preserving CC/CV compliance, as confirmed in Figure 19 and Theory of Operation section of FN9242.
What is the function of the V2P8 pin on the ISL9203CRZR5220, and what load can it drive?
The V2P8 pin delivers a regulated 2.7–3.1V output used for adapter presence detection and biasing external circuits like NTC thermistors. It is specified to source up to 2mA continuously. Exceeding this load may cause voltage droop or affect POR stability, so external buffering is recommended for higher-current applications.
How is charge current programmed on the ISL9203CRZR5220, and what is the relationship to IREF?
Charge current is set by an external resistor (RIREF) connected between IREF and GND. The IREF pin maintains 0.8V, so ICHARGE = (0.8V / RIREF) × 10⁵. For example, RIREF = 80kΩ yields ~1.0A CC current. Table 1 in FN9242 provides exact values, and tolerance depends on resistor accuracy - not device variation.
ISL9203CRZR5220 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- -
- Fault Protection:
- -
- Charge Current - Max:
- 1.5A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 6.5V
- Interface:
- -
- Operating Temperature:
- -20°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
ISL9203CRZR5220 FAQ
1.How can I place an order for ISL9203CRZR5220 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9203CRZR5220 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 ISL9203CRZR5220 reliable?
The price and inventory of ISL9203CRZR5220 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9203CRZR5220 is usually 5 days.
3.What payment methods are accepted for ISL9203CRZR5220?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9203CRZR5220 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9203CRZR5220?
ISL9203CRZR5220 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9203CRZR5220 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 ISL9203CRZR5220?
For technical support, including ISL9203CRZR5220 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9203CRZR5220 requirements.
6.How does Aetrix verify that ISL9203CRZR5220 is sourced from the original manufacturer or authorized distributors?
All ISL9203CRZR5220 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 ISL9203CRZR5220 meets industry standards.
7.What is the process for return or replacement of ISL9203CRZR5220?
All ISL9203CRZR5220 units undergo pre-shipment inspection (PSI). If there is an issue with ISL9203CRZR5220, 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 ISL9203CRZR5220 part is unused and in its original packaging.
Return procedure for ISL9203CRZR5220:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9203CRZR5220 Tags
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