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Renesas ISL8010IUZ
- Part No.:
- ISL8010IUZ
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL8010IUZ.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,815
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Product details
Overview
ISL8010IUZ from Intersil is a synchronous 600mA step-down DC/DC regulator with integrated PMOS/NMOS FETs, internal compensation, and automatic PFM/PWM mode control. It operates from 2.5V to 5.5V input, delivers adjustable output from 0.8V to VIN, and features 1.4MHz nominal switching frequency, 120µA quiescent current, and Power-Good (PG) open-drain output - used in Li-Ion–powered portable instrumentation and SFP modules.
For engineers reviewing the ISL8010IUZ datasheet, ISL8010IUZ pinout, ISL8010IUZ application, or ISL8010IUZ equivalent, key selection criteria include its 10-lead MSOP package footprint (<0.18in²), hiccup-mode overcurrent protection, ±5% PG threshold accuracy, and external synchronization capability up to 12MHz for EMI-sensitive designs.
Technical Context
The ISL8010IUZ implements a voltage-mode PWM controller with fixed internal compensation and dual-mode operation: automatic PFM at light loads (≥70% efficiency at 1mA) and forced or synchronized PWM at full load. Its control architecture integrates soft-start (650µs), bandgap reference (0.8V ±10mV), and hiccup-mode thermal/current fault response.
It uses separate signal ground (SGND) and power ground (PGND) pins to isolate noise-sensitive control circuitry from high-current switching paths. The LX pin drives an external inductor with peak current limit of 1.2A, while FB senses output via resistive divider to maintain regulation within ±1% over temperature and line variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 600mA continuous; supports 800mA peak for transient loads without shutdown |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-Ion, 3.3V, and 5V rails |
| Feedback Voltage | 800mV ±10mV - sets output via external resistor divider (VO = 0.8V × (1 + R1/R2)) |
| Switching Frequency | 1.4MHz typical (1.25–1.6MHz); synchronizable to external clock up to 12MHz |
| Quiescent Current | 120µA in PFM mode - enables >70% efficiency at 1mA load |
| Shutdown Current | <1µA - ensures near-zero battery drain during system sleep |
| Thermal Shutdown | 145°C trip, 130°C hysteresis - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
ISL8010IUZ is housed in a RoHS-compliant, Pb-free 10-lead MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm, rated for –40°C to +85°C ambient operation. Thermal resistance θJA is 130°C/W on standard test board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SGND) | Signal Ground Reference | Return path for control circuitry; must be isolated from PGND and connected at single point near IC |
| 2 (PGND) | Power Ground Return | High-current return for LX switch node; requires large copper pour and multiple vias for thermal relief |
| 3 (LX) | Switch Node Output | Drives external inductor; carries pulsed 800mA peak current; sensitive to layout parasitics |
| 4 (VIN) | Main Power Input | Supplies power stage (PMOS/NMOS); accepts 2.5–5.5V; requires local 10µF ceramic decoupling |
| 5 (VDD) | Controller Supply | Bias supply for internal logic and reference; derived from VIN but internally regulated |
| 6 (SYNC) | Mode Control / Sync Input | Pull to GND for auto PFM/PWM; pull to VIN for forced PWM; drive with 1.6–12MHz clock for EMI reduction |
| 7 (EN) | Enable Input | Active-high logic input; 2.4V threshold; enables soft-start and disables all switching when low |
| 8 (PG) | Power-Good Open Drain | Indicates VO within ±5% of target; requires external 100kΩ pull-up to VIN or VCC |
| 9 (VO) | Output Voltage Sense | Direct connection to output capacitor; used with FB for remote sensing in high-current layouts |
| 10 (FB) | Feedback Input | Connects to resistor divider midpoint; references 0.8V internal bandgap; determines output setpoint |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated voltage-mode control | Eliminates need for external compensation network; supports stable operation with 1.5–2.2µH inductors and 10–22µF ceramic caps |
| Automatic PFM/PWM transition | Maintains >70% efficiency at 1mA load and up to 95% at 600mA; reduces audible noise and improves light-load battery life |
| Hiccup-mode overcurrent protection | Limits average power dissipation during short-circuit by cycling shutdown/wait/restart (~700µs hiccup period) |
| Separate SGND and PGND pins | Enables clean separation of analog reference and high-current return paths - critical for PSRR and stability |
| 10-lead MSOP footprint | Occupies <0.18in² PCB area with components on one side only; max height 1.1mm for ultra-thin portable designs |
Applications
| Portable Test Equipment | Li-Ion–Powered Devices |
|---|---|
Use Scenario: Handheld multimeters and oscilloscope probes requiring stable 1.8V/3.3V rails from single-cell batteries. IC Role / Device Role / Timing Role: Primary step-down regulator delivering regulated output with minimal quiescent draw during standby. Use Value: 120µA no-load IQ extends battery runtime; 1.4MHz switching allows compact 1.8µH inductor and 10µF ceramic caps. |
Use Scenario: Bluetooth headsets and wearables powered by 3.7V Li-Ion cells needing efficient 1.2V core and 3.3V I/O supplies. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting dynamic load transitions from µA sleep to 600mA active states. Use Value: Automatic PFM/PWM mode maintains >70% efficiency at 1mA and >90% at 300mA - minimizing thermal rise in sealed enclosures. |
| SFP Transceiver Modules | Bar Code Readers |
Use Scenario: Small-form-factor pluggable optical modules requiring tightly regulated 3.3V supply in space-constrained 1×1 inch footprints. IC Role / Device Role / Timing Role: Compact, one-side PCB solution providing low-noise 3.3V rail with Power-Good signaling for host controller sequencing. Use Value: PG output asserts within 650µs of startup; MSOP package enables full converter layout in <0.18in² - meeting SFP MSA mechanical specs. |
Use Scenario: Industrial handheld scanners operating from 5V USB or 3.3V battery packs, demanding robust start-up under pre-biased loads. IC Role / Device Role / Timing Role: Regulator with soft-start and hiccup-mode protection tolerating frequent hot-plug events and motor-induced transients. Use Value: EN-controlled soft-start prevents inrush into pre-charged outputs; 1.2A current limit withstands brief motor stall currents without latch-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80015IRZ-T | 600mA, 2.7–5.5V input, 1.5MHz fixed freq, no SYNC pin, 25µA IQ | Lacks external sync and PFM mode; optimized for ultra-low IQ rather than wide-input flexibility | Preferred where lowest possible standby current is critical and EMI synchronization is unnecessary |
| TPS62231DRYT | 600mA, 2.05–6.0V input, 3.6MHz fixed freq, 17µA IQ, no PG or SYNC | Higher switching frequency enables smaller LC values but eliminates PG monitoring and sync capability | Selected for space-constrained designs where 3.6MHz operation justifies loss of fault signaling and EMI control |
Compared with ISL8010IUZ, ISL80015IRZ-T offers lower quiescent current but sacrifices synchronization and PFM flexibility, while TPS62231DRYT achieves higher integration density at the cost of PG functionality and adaptive efficiency modes - making ISL8010IUZ optimal for balanced performance in portable industrial systems.
Availability
ISL8010IUZ is available at Aetrix Electronics and suitable for portable test equipment, Li-Ion–powered devices, and SFP transceiver modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8010IUZ 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 Corporation (now part of Renesas Electronics) designs high-performance analog and power management ICs for industrial, communications, and consumer applications, with ISO9001-certified manufacturing.
The ISL8010IUZ belongs to Intersil's monolithic buck regulator product line, engineered for space-constrained, battery-operated systems requiring high light-load efficiency, robust fault protection, and minimal external component count.
FAQ
What is the maximum input voltage rating for the ISL8010IUZ?
The ISL8010IUZ has an absolute maximum input voltage rating of +6.5V across VIN, VDD, and PG pins relative to SGND. However, its specified operational input range is 2.5V to 5.5V. Exceeding 5.5V may cause permanent damage or unverified behavior, even if below the absolute maximum. Always operate ISL8010IUZ within the 2.5–5.5V range for guaranteed performance and reliability.
Does the ISL8010IUZ support pre-biased output startup?
Yes, the ISL8010IUZ supports pre-biased output startup. When EN is asserted, the device begins in PFM mode regardless of output voltage state, allowing safe ramp-up even when VO is already partially charged. This behavior is explicitly confirmed in the Applications Information section of the FN6191 datasheet and makes ISL8010IUZ suitable for hot-swap and multi-rail sequencing applications.
How does the Power-Good (PG) output of the ISL8010IUZ function?
The PG pin of the ISL8010IUZ is an open-drain NMOS output that pulls low when VO deviates more than ~5% from the target (i.e., VFB < 86% or >95% of 800mV). It remains high only when EN is high, no faults are present, and regulation is stable. A 100kΩ pull-up resistor to VIN or VCC is required. PG assertion occurs after soft-start completes and VO settles - typically within 1ms of EN activation.
Can the ISL8010IUZ be synchronized to a 10MHz external clock?
Yes, the ISL8010IUZ can be synchronized to a 10MHz external clock applied to the SYNC pin. The datasheet specifies synchronization capability from 1.6MHz up to 12MHz. At 10MHz, the device operates in forced PWM mode with precise frequency alignment, reducing EMI peaks and enabling deterministic timing in noise-sensitive systems such as RF front-ends or high-resolution ADC supplies.
What is the recommended inductor value for the ISL8010IUZ in a 1.8V@600mA design?
The recommended inductor value for ISL8010IUZ in a 1.8V @ 600mA application is 1.8µH, as shown in the Typical Application Diagram on page 1 of FN6191. The datasheet specifies a valid range of 1.5µH to 2.2µH for stable operation with internal compensation. Inductors must handle ≥2A surge current during hiccup-mode overcurrent events and support ≥600mA RMS current.
ISL8010IUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
ISL8010IUZ FAQ
1.How can I place an order for ISL8010IUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8010IUZ 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 ISL8010IUZ reliable?
The price and inventory of ISL8010IUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8010IUZ is usually 5 days.
3.What payment methods are accepted for ISL8010IUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8010IUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8010IUZ?
ISL8010IUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8010IUZ 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 ISL8010IUZ?
For technical support, including ISL8010IUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8010IUZ requirements.
6.How does Aetrix verify that ISL8010IUZ is sourced from the original manufacturer or authorized distributors?
All ISL8010IUZ 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 ISL8010IUZ meets industry standards.
7.What is the process for return or replacement of ISL8010IUZ?
All ISL8010IUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL8010IUZ, 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 ISL8010IUZ part is unused and in its original packaging.
Return procedure for ISL8010IUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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