My Inquiry
My Account
onsemi ILC6383CIR50X
- Part No.:
- ILC6383CIR50X
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ILC6383CIR50X.pdf
- Description:
- IC REG BOOST 5V 1A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,726
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ILC6383CIR50X from Fairchild Semiconductor is a fixed 5V-output, synchronous step-up DC-DC converter optimized for single- to triple-cell battery inputs (0.9V–3.0V). It delivers up to 300mA at 5V from a 3V input, features true load disconnect in shutdown (<1µA battery leakage), and integrates PFM/PWM mode selection via the SEL pin. It is used in cellular phones and portable electronics requiring high-efficiency, low-noise voltage boosting.
For engineers reviewing the ILC6383CIR50X datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 0.9V startup, ±3.5% output accuracy over –40°C to +85°C, 300kHz oscillator with ±15% tolerance, open-drain POK flag, and low-battery detection with 100ms transient rejection delay.
Technical Context
The ILC6383CIR50X employs a dual-mode PWM/PFM architecture: PWM mode (SEL open) provides fixed 300kHz switching for noise-sensitive applications like RF sections, while PFM mode (SEL grounded) enables pulse-skipping for >90% efficiency at light loads. Internal synchronous rectification eliminates external diode losses.
Its control loop regulates output using an internal 1.25V reference and integrated comparator circuitry. The LBI/SD pin serves dual function-setting low-battery threshold via external resistor divider and enabling shutdown when pulled below 0.4V-while the POK pin asserts open-drain high when VOUT reaches 92–98% of nominal 5.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±3.5% over –40°C to +85°C; ensures stable rail for logic and RF ICs without external feedback components. |
| Input Voltage Range | 0.9V to 3.0V; supports operation down to single alkaline or NiMH cell, enabling compact battery-powered designs. |
| Max Output Current | 300mA at 5V from 3V input; sufficient to power baseband processors or display drivers in handheld devices. |
| Oscillator Frequency | 300kHz ±15%; places fundamental switching energy outside audio band (<20kHz) and avoids 455kHz IF interference. |
| Shutdown Input Current | <1µA at VOUT = 0V; prevents battery drain during system sleep or off-state in portable equipment. |
| Power Good Threshold | 0.92×VOUT to 0.98×VOUT (i.e., 4.6V–4.9V); provides reliable system reset or enable signaling before downstream circuits activate. |
| Low Battery Detection Delay | 100ms hold time; rejects short transients (e.g., GSM pulse loading) to avoid false low-battery alerts. |
Pinout & Package
ILC6383CIR50X is housed in an 8-pin MSOP package (3.0mm × 3.0mm, 0.65mm pitch), optimized for space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switch node | Connects to inductor; carries high di/dt current during switching; requires low-inductance layout to minimize EMI. |
| VIN | Battery input | Accepts 0.9V–3.0V unregulated source; must be decoupled with ≥47µF ceramic capacitor near pin. |
| LBI/SD | Low-battery detect input / shutdown control | Configurable threshold via resistor divider; <0.4V forces shutdown and true load disconnect. |
| SEL | Mode select | Grounded → PFM mode (high efficiency at light load); open/high → PWM mode (low noise, constant frequency). |
| POK | Power good output | Open-drain flag; requires external pull-up; signals VOUT regulation status to host controller or PMIC. |
| LBO | Low-battery output | Open-drain active-low signal; sinks 2mA; indicates battery voltage below user-set LBI threshold. |
| GND | Power ground | Primary return path for LX and VIN currents; must be star-connected to minimize noise coupling. |
| VOUT | Regulated 5.0V output | Supplies downstream loads; requires low-ESR/low-ESL output capacitor (e.g., 47µF X5R ceramic) within 6mm. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing conduction loss and board area; improves efficiency by ~5–8% vs. asynchronous designs. |
| True load disconnect | Shuts off both high-side and low-side switches in shutdown, limiting battery-to-VOUT leakage to <1µA-critical for long shelf life. |
| Dual PFM/PWM operation | Enables >90% efficiency across 1mA–300mA load range: PFM extends battery runtime in standby; PWM ensures clean power for RF/analog blocks. |
| Integrated low-battery detector | 100ms built-in delay rejects GSM burst-induced voltage sags; avoids spurious system resets or UI warnings during transmission. |
| 300kHz fixed-frequency PWM | Places fundamental switching energy at predictable frequency, simplifying EMI filter design and avoiding sensitive IF bands (e.g., 455kHz). |
Applications
| Cellular Phone Power Management | Handheld PDA Core Supply |
|---|---|
|
Use Scenario: Boosting single-cell alkaline/NiMH (0.9–1.5V) to stable 5V for baseband processor I/O and USB interface circuitry. IC Role / Device Role / Timing Role: Primary step-up regulator with POK flag enabling safe processor boot sequencing and brown-out protection. Use Value: Guaranteed 0.9V startup and 300mA capability support full-feature GSM call operation without brownout, even at end-of-battery-life. |
Use Scenario: Generating 5V rail from 2-cell Li-ion (2.4–3.0V) for LCD backlight driver and touch controller in palmtop devices. IC Role / Device Role / Timing Role: High-efficiency boost converter with SEL-configurable mode to balance runtime (PFM) and display flicker immunity (PWM). Use Value: 90%+ peak efficiency at 50mA load extends usable screen-on time; 300kHz PWM avoids audible coil whine in compact enclosures. |
| Portable Medical Monitor Display | Wireless Headset Audio Bias |
|
Use Scenario: Providing regulated 5V to OLED display driver IC in battery-operated patient monitors with strict EMC requirements. IC Role / Device Role / Timing Role: Low-noise, fixed-frequency PWM boost stage; POK synchronizes display initialization with power rail stability. Use Value: 300kHz fundamental and harmonic suppression enable compliance with IEC 60601-1 emissions limits without added shielding. |
Use Scenario: Supplying clean 5V bias to MEMS microphone preamp and Bluetooth radio in ultra-low-power wireless headsets. IC Role / Device Role / Timing Role: Dual-mode regulator: PFM during idle/sleep (IIN < 1µA), PWM during voice transmission (low ripple, no RF interference). Use Value: True load disconnect and <1µA shutdown current maximize standby time; LBO flag triggers low-battery alert before headset failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61022DRVR | Higher 5.5V max input; 2.5MHz switching; no integrated LBO; requires external feedback resistors even for fixed 5V. | Better suited for space-constrained designs needing smaller inductors; lacks native low-battery detection and true shutdown disconnect. | Select if board area is critical and LBO/SD functionality is implemented elsewhere; verify POK timing compatibility with host MCU. |
| MAX8625ETE+ | Fixed 5V output; 1.2MHz switching; 2.7–5.5V input range; includes thermal shutdown but no LBO/SD dual-function pin. | Requires ≥2.7V input-cannot start from single-cell 0.9V; better for Li-ion-only systems where higher Vin is guaranteed. | Choose only for 2-cell Li-ion or USB-powered applications; not viable for single-cell alkaline/NiMH due to minimum Vin violation. |
Compared with TPS61022DRVR and MAX8625ETE+, the ILC6383CIR50X uniquely combines sub-1V startup, integrated LBO/SD dual-function pin, true load disconnect, and 300kHz EMI-optimized frequency-all in an MSOP-8 package-making it irreplaceable for legacy single-cell portable designs requiring robust battery monitoring and minimal BOM count.
Availability
ILC6383CIR50X is available at Aetrix Electronics and suitable for cellular phones, handheld PDAs, and portable medical monitors requiring stable component supply with long-term lifecycle assurance.
Supply support for ILC6383CIR50X 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 pioneer in power management ICs, known for high-reliability analog and mixed-signal solutions targeting portable and battery-powered systems.
The ILC6383 series was designed specifically for wireless communications devices requiring ultra-low-voltage startup, spectral-clean switching, and integrated battery monitoring-addressing core challenges in GSM, CDMA, and early 3G handheld platforms.
FAQ
What is the minimum input voltage required for ILC6383CIR50X to start up and regulate 5V output?
The ILC6383CIR50X guarantees startup in PWM mode at 0.9V input with 10mA load. This enables operation from deeply discharged single-cell alkaline or NiMH batteries. Startup voltage increases slightly in PFM mode and depends on load; typical startup at 1.0V is observed for 1mA loads per the datasheet's performance curves.
Does ILC6383CIR50X require external components to set its 5V output voltage?
No. The ILC6383CIR50X is a fixed-output variant-its 5.0V regulation is achieved internally without external feedback resistors. Unlike the ILC6383CIR-ADJ version, it uses trimmed internal reference and feedback network, simplifying design and reducing BOM count for standard 5V applications.
How does the LBI/SD pin function in ILC6383CIR50X, and what external circuitry is needed?
The LBI/SD pin serves dual roles: setting low-battery threshold (via resistor divider to VIN) and enabling shutdown (when pulled <0.4V). For basic shutdown, connect directly to ground through a logic-level FET. For battery monitoring, use two resistors (e.g., R5=100kΩ, R6=100kΩ) to set threshold; the datasheet provides exact formulas based on internal 1.25V reference.
What is the purpose of the SEL pin on ILC6383CIR50X, and how does it affect efficiency?
The SEL pin selects between PFM (SEL = LOW) and PWM (SEL = open or >1.5V) operation modes. PFM maximizes light-load efficiency (>90% at 1mA) via pulse skipping; PWM maintains constant 300kHz frequency for low-noise, predictable EMI filtering-critical in RF sections. Efficiency drops ~2–3% at full load in PFM vs. PWM due to variable frequency control limitations.
Can ILC6383CIR50X drive a 300mA load continuously at 5V from a 1.2V input?
No. At 1.2V input, the ILC6383CIR50X delivers only 75mA at 5V (per Electrical Characteristics table, VIN = 1.2V condition). Full 300mA capability requires ≥3.0V input. Attempting 300mA at 1.2V will cause output droop or regulation loss; design must match load current to achievable input voltage per the datasheet's IOUT vs. VIN curves.
ILC6383CIR50X 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
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 5.5V
- 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
ILC6383CIR50X FAQ
1.How can I place an order for ILC6383CIR50X through Aetrix?
Please submit a Request for Quotation (RFQ) for ILC6383CIR50X 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 ILC6383CIR50X reliable?
The price and inventory of ILC6383CIR50X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILC6383CIR50X is usually 5 days.
3.What payment methods are accepted for ILC6383CIR50X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILC6383CIR50X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ILC6383CIR50X?
ILC6383CIR50X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ILC6383CIR50X 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 ILC6383CIR50X?
For technical support, including ILC6383CIR50X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILC6383CIR50X requirements.
6.How does Aetrix verify that ILC6383CIR50X is sourced from the original manufacturer or authorized distributors?
All ILC6383CIR50X 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 ILC6383CIR50X meets industry standards.
7.What is the process for return or replacement of ILC6383CIR50X?
All ILC6383CIR50X units undergo pre-shipment inspection (PSI). If there is an issue with ILC6383CIR50X, 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 ILC6383CIR50X part is unused and in its original packaging.
Return procedure for ILC6383CIR50X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ILC6383CIR50X Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
