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onsemi ILC6363CIR50X
- Part No.:
- ILC6363CIR50X
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ILC6363CIR50X.pdf
- Description:
- IC REG BOOST 5V 1A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,452
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Product details
Overview
ILC6363CIR50X from Fairchild Semiconductor is a fixed 5.0V output, synchronous step-up/step-down DC-DC converter in MSOP-8 package, delivering up to 500mA output current with >90% peak efficiency at 3.6V input/300mA load, true load disconnect in shutdown (1µA), and integrated low-battery detection with 100ms transient rejection delay - designed for single Li-ion battery-powered portable electronics.
For engineers reviewing the ILC6363CIR50X datasheet, pinout, applications, or equivalent options, this page delivers verified specifications including 300kHz ±15% oscillator frequency, PFM/PWM mode selection via SEL pin, open-drain POK and LBO outputs, and MSOP-8 thermal resistance (θJA = 206°C/W) - all critical for battery life optimization and system power-on reset design.
Technical Context
The ILC6363CIR50X operates as a dual-mode (PFM/PWM) switch-mode regulator with unconditional stability and no external compensation required. Its architecture supports limited buck operation when input voltage is up to 0.8V above VOUT, while maintaining regulated 5.0V output across 2.7–4.2V Li-ion input range.
It integrates synchronous rectification (eliminating external diode), a 1.25V internal reference for low-battery threshold setting, and dual open-drain status outputs: POK (power good, 0.92–0.98×VOUT threshold) and LBO (low-battery flag with 120ms hold time). Shutdown is asserted via LBI/SD pin <0.4V, reducing input current to ≤10µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2.5% (4.875–5.175V) over full input range and temperature |
| Max Output Current | 500mA in PWM mode; 250mA in PFM mode - defines maximum sustained load capability |
| Efficiency | 92% typ. at 300mA (PWM); >90% peak at 3.6VIN/300mA/3.6VOUT - directly impacts battery runtime |
| Oscillator Frequency | 300kHz ±15% - sets EMI profile and enables compact 15µH inductor selection |
| No-Load Input Current | 300µA - determines quiescent drain during light-load standby |
| Shutdown Current | ≤10µA - ensures true load disconnect and zero battery drain in off-state |
| Low-Battery Threshold | User-configurable via resistor divider on LBI/SD pin; internal 1.25V reference - enables precise battery cutoff |
Pinout & Package
ILC6363CIR50X is housed in an 8-pin MSOP package (3.1mm × 4.65mm, 0.65mm pitch) with exposed pad for thermal performance (θJA = 206°C/W). Pin 1 is marked by a dot; top-view orientation follows standard MSOP layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LX | Inductor switch node | Connects to inductor; carries high-frequency switching current - requires short, low-inductance trace |
| 2 VIN | Battery input | Direct connection to Li-ion cell (2.7–4.2V); supplies power to internal circuitry and switch |
| 3 LBI/SD | Low-battery detect input / shutdown control | Configures battery cutoff threshold via resistor divider; <0.4V forces shutdown with true load disconnect |
| 4 SEL | Mode select | Ground = PFM (high efficiency at light load); open/high = PWM (stable ripple, predictable EMI) |
| 5 POK | Power good open-drain output | Asserts high when VOUT is within 0.92–0.98×5.0V - used for system reset or enable sequencing |
| 6 LBO | Low-battery open-drain output | Asserts low when VIN falls below configured threshold for >120ms - prevents false triggers from transients |
| 7 GND | Power and signal ground | Star-ground connection point; must be tied to battery and system ground with low-impedance path |
| 8 VOUT | Regulated 5.0V output | Supplies downstream logic; requires local 100µF ceramic capacitor for low ripple and ESR/ESL control |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces conduction loss and board area; enables >90% efficiency |
| Dual-mode PFM/PWM control | SEL pin selects optimal regulation strategy: PFM for <50mA loads (maximizes light-load efficiency), PWM for >50mA (minimizes ripple and EMI spread) |
| True load disconnect | Shuts down internal switches and isolates VOUT from VIN - limits shutdown current to ≤10µA, preserving battery charge |
| Integrated low-battery detector | 1.25V internal reference + 120ms hold time on LBI/SD pin - enables robust battery monitoring without external comparator |
| Power-good flag (POK) | Open-drain output with 50mV hysteresis - provides clean system reset signal when 5.0V rail reaches regulation tolerance |
Applications
| Cellular Phones | Palmtops & PDAs |
|---|---|
Use Scenario: Powering baseband processor and RF transceiver from single Li-ion cell with dynamic load ranging 1–500mA. IC Role / Device Role / Timing Role: Step-up/step-down DC-DC converter providing stable 5.0V supply independent of battery voltage sag (2.7–4.2V). Use Value: Extends usable battery capacity by operating efficiently across full discharge curve and enabling deep sleep modes with 300µA quiescent current. |
Use Scenario: Supplying USB peripheral interface and display backlight driver in handheld computing devices. IC Role / Device Role / Timing Role: Primary 5.0V power rail generator with POK output synchronized to system boot sequence. Use Value: Ensures reliable power-on reset via POK flag and eliminates need for external supervisor IC, reducing BOM count. |
| Single-Cell Li-ion Equipment | Portable Medical Monitors |
Use Scenario: Powering microcontroller, sensors, and Bluetooth module in compact battery-operated instrumentation. IC Role / Device Role / Timing Role: Dual-mode regulator adapting to burst transmission (PWM) and sensor sampling (PFM) load profiles. Use Value: Delivers 500mA peak current for radio transmit while maintaining >85% efficiency at 1mA idle - maximizes runtime per charge. |
Use Scenario: Providing regulated 5.0V for analog front-end and data acquisition circuitry in wearable vital sign monitors. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source with LBO-driven battery alert and shutdown coordination. Use Value: Prevents data corruption during battery depletion using 120ms LBI hold time and clean POK-controlled system shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Fixed 5.0V version available; higher 96% peak efficiency; 2.5MHz switching; requires external compensation | Supports wider input (1.8–5.5V); better suited for space-constrained designs needing smaller inductors | Choose TPS63020DSJR if PCB area is critical and 2.5MHz EMI filtering is feasible; verify loop stability with external RC network |
| MAX8640YETA+ | Fixed 5.0V output; 3MHz switching; 400mA max output; integrated soft-start; no LBO output | Lacks low-battery detection and true load disconnect - requires external supervisor for battery management | Choose MAX8640YETA+ only if LBO/POK functionality is handled elsewhere; confirm 400mA limit suffices for peak load |
Compared with ILC6363CIR50X, the TPS63020DSJR offers higher efficiency and frequency but adds design complexity, while the MAX8640YETA+ sacrifices battery monitoring features for compactness - ILC6363CIR50X remains optimal where integrated LBO/POK and proven 500mA capability are required.
Availability
ILC6363CIR50X is available at Aetrix Electronics and suitable for cellular phones, palmtops/PDAs, and single-cell Li-ion portable equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for ILC6363CIR50X 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
Fairchild Semiconductor (now part of ON Semiconductor) is a legacy analog and power IC manufacturer specializing in high-efficiency, low-voltage DC-DC solutions for portable and battery-powered systems.
The ILC6363 product line was engineered specifically for single Li-ion battery applications demanding wide-input-range regulation, minimal external components, and integrated power management features - targeting cellular, PDA, and handheld medical markets.
FAQ
What is the guaranteed output voltage accuracy of the ILC6363CIR50X over temperature and load?
The ILC6363CIR50X guarantees a 5.0V output with ±2.5% tolerance (4.875–5.175V) across the full operating temperature range (−40°C to +85°C) and input voltage range (2.7–4.2V), as specified in the Electrical Characteristics table under PFM mode conditions. This accuracy is maintained regardless of load current from 1mA to 500mA in PWM mode, ensuring reliable operation for logic and analog circuitry powered from the ILC6363CIR50X output rail.
How does the ILC6363CIR50X achieve true load disconnect in shutdown mode?
The ILC6363CIR50X achieves true load disconnect by internally opening both the high-side and synchronous rectifier switches when the LBI/SD pin is pulled below 0.4V, physically isolating the VOUT pin from VIN. This results in a maximum shutdown input current of 10µA and prevents battery drain through leakage paths - a critical feature for long-term storage or emergency-off states in portable devices powered by the ILC6363CIR50X.
Can the ILC6363CIR50X operate with input voltages below its nominal output voltage?
Yes - the ILC6363CIR50X is a buck-boost capable converter and operates across a 2.7–4.2V input range while maintaining a regulated 5.0V output. When VIN drops below 5.0V (e.g., at end-of-discharge), it functions as a boost converter; when VIN exceeds 5.0V by >800mV, it enters linear tracking mode. This dual behavior makes the ILC6363CIR50X uniquely suited for single Li-ion battery systems where VIN spans both below and above VOUT.
What external components are mandatory for basic ILC6363CIR50X operation?
Three external components are mandatory: a 15µH power inductor between LX and VIN, a 100µF input capacitor (tantalum or low-ESR ceramic) between VIN and GND, and a 100µF output capacitor between VOUT and GND. The POK and LBO pins require external 10kΩ pull-up resistors. No feedback resistors are needed for the fixed 5.0V ILC6363CIR50X - unlike the adjustable ADJ variant - simplifying layout and reducing BOM count.
How does the low-battery detection circuit in the ILC6363CIR50X prevent false triggering?
The ILC6363CIR50X incorporates a 120ms built-in hold time (tHOLD(LBI)) on the LBI/SD pin. The LBO output only asserts low after VIN remains below the user-configured threshold (set via resistor divider) for ≥120ms - effectively rejecting short transients caused by RF bursts, motor startup, or load switching. This ensures battery alerts reflect genuine depletion, not momentary dips, improving system reliability in real-world use of the ILC6363CIR50X.
ILC6363CIR50X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 4.2V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ILC6363CIR50X FAQ
1.How can I place an order for ILC6363CIR50X through Aetrix?
Please submit a Request for Quotation (RFQ) for ILC6363CIR50X 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 ILC6363CIR50X reliable?
The price and inventory of ILC6363CIR50X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILC6363CIR50X is usually 5 days.
3.What payment methods are accepted for ILC6363CIR50X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILC6363CIR50X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ILC6363CIR50X?
ILC6363CIR50X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ILC6363CIR50X 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 ILC6363CIR50X?
For technical support, including ILC6363CIR50X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILC6363CIR50X requirements.
6.How does Aetrix verify that ILC6363CIR50X is sourced from the original manufacturer or authorized distributors?
All ILC6363CIR50X 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 ILC6363CIR50X meets industry standards.
7.What is the process for return or replacement of ILC6363CIR50X?
All ILC6363CIR50X units undergo pre-shipment inspection (PSI). If there is an issue with ILC6363CIR50X, 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 ILC6363CIR50X part is unused and in its original packaging.
Return procedure for ILC6363CIR50X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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