My Inquiry
My Account
Renesas ISL8016IR33Z
- Part No.:
- ISL8016IR33Z
- Manufacturer:
- Renesas
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
ISL8016IR33Z.pdf
- Description:
- IC REG BUCK 3.3V 6A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL8016IR33Z from Renesas (formerly Intersil) is a 6A monolithic synchronous buck regulator with fixed 3.3V output, operating from 2.7V–5.5V input. It delivers up to 97% efficiency at 6A, features ±1% output voltage accuracy over temperature/load/line, 100% duty-cycle capability for <200mV dropout, and integrated P/N-channel MOSFETs. It powers FPGA core rails in compact industrial embedded systems requiring stable low-noise POL conversion.
For engineers reviewing the ISL8016IR33Z datasheet, ISL8016IR33Z pinout, ISL8016IR33Z application, or ISL8016IR33Z equivalent, key selection criteria include its fixed 3.3V output with ±10% margining, adjustable current limit (2A/4A/6A), 500kHz–4MHz frequency programming, pre-bias start capability, and thermal shutdown with 25°C hysteresis - all in a thermally enhanced 20-lead 3×4 QFN package.
Technical Context
The ISL8016IR33Z implements peak current-mode control with slope compensation for fast transient response and loop stability. Its internal architecture integrates high-side and low-side MOSFETs with ON-resistances of 31–45mΩ (P-ch) and 19–35mΩ (N-ch) at 5V input, enabling high-efficiency operation across 0–6A load range.
It supports dual operating modes: forced PWM (via SYNCIN = HI) for low-noise applications and PFM (SYNCIN = LO) for ultra-low quiescent current (70µA at no load). Phase interleaving capability enables >6A output via paralleling with master/slave synchronization up to 4MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% over -40°C to +85°C; supports ±10% margining via VSET pin. |
| Max Output Current | 6A continuous; peak current limit configurable to 7.7–11.5A (ISET floating). |
| Input Voltage Range | 2.7V to 5.5V DC; includes 2.5V UVLO rising threshold and 2.2V falling threshold. |
| Switching Frequency | Adjustable 500kHz–4MHz via FS resistor; defaults to 1MHz with internal compensation when FS = VIN. |
| Efficiency | Up to 97% at 6A, 5VIN/3.3VOUT; maintains >85% down to 0.3A in PFM mode. |
| Quiescent Current | 70µA in PFM no-load mode; 8–15mA in PWM no-load mode depending on SYNCIN/FS configuration. |
| Thermal Performance | θJA = 42°C/W; θJC = 5°C/W; thermal shutdown at 150°C with 25°C hysteresis. |
Pinout & Package
ISL8016IR33Z is housed in a RoHS-compliant, lead-free 20-lead 3×4 mm QFN package (PKG DWG L20.3x4) with exposed thermal pad. The package provides excellent thermal dissipation and requires connection of the EPAD to SGND via multiple vias to system ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19, 20 | PGND | Power ground return for high-current switching paths; must be low-inductance connection to input/output capacitors. |
| 2, 3, 4 | PHASE | Switching node connecting to inductor; carries full AC ripple current and high di/dt; requires short, wide trace routing. |
| 5, 6, 7 | VIN | Main input supply (2.7–5.5V); requires two 22µF ceramic capacitors placed near pins for high-frequency decoupling. |
| 8 | PG | Open-drain power-good indicator; asserts after 1ms delay once VOUT reaches regulation; requires external 10k–100kΩ pull-up to VIN. |
| 9 | SYNCOUT | 250µA current-source sync pulse output; used to synchronize slave converters; held at 0V in PFM mode. |
| 10 | SYNCIN | Mode selection/sync input: logic high = PWM, logic low = PFM, external clock = synchronization source (500kHz–4MHz). |
| 11 | EN | Active-high enable with internal 1MΩ pull-down; drives low to shut down and discharge output capacitor. |
| 12 | FS | Frequency set pin: connect resistor to SGND for 500kHz–4MHz adjustment; tie to VIN for default 1MHz internal compensation. |
| 13 | VSET | Output voltage margining control: SGND = –10%, float = nominal, VIN = +10%. |
| 14 | ISET | Peak current limit setting: SGND = 2A, VIN = 4A, float = 6A (default for ISL8016IR33Z). |
| 15 | SS | Soft-start timing control: SGND = 1ms internal ramp; capacitor to SGND adjusts ramp time (≤33nF). |
| 16, 17 | COMP / VFB | VFB is feedback input (0.6V reference); COMP is error amplifier output; tie COMP to SGND when using internal compensation (FS = VIN). |
| 18 | SGND | Signal ground reference for feedback, compensation, and logic pins; separate from PGND but connected via single-point at EPAD. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-MOSFETs | Eliminates external power switches; reduces BOM count and layout area while optimizing conduction losses (RDS(on) ≤45mΩ/35mΩ). |
| Pre-biased output startup | Enables safe start-up into pre-charged loads without reverse current flow, critical for hot-swap and multi-rail sequencing. |
| Adjustable current limit | Three discrete settings (2A/4A/6A) via ISET pin allow precise overcurrent protection tuning without external components. |
| 100% duty-cycle operation | Supports ultra-low dropout (<200mV at 6A), enabling operation with minimal input-to-output differential - essential for Li-ion battery systems. |
| Phase interleaving support | SYNCOUT/SYNCIN interface enables precise master-slave timing alignment for paralleled configurations, reducing input/output ripple by >50%. |
Applications
| FPGA Core Power Supply | Industrial PLC I/O Module |
|---|---|
Use Scenario: Powers 3.3V I/O banks and auxiliary rails in Xilinx Artix-7 or Intel MAX 10 FPGAs within space-constrained programmable logic controllers. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator delivering regulated 3.3V at up to 6A with tight transient response and soft-start sequencing. Use Value: Delivers ±1% output accuracy and 97% peak efficiency while supporting pre-bias start and reverse current protection during hot-plug I/O module insertion. |
Use Scenario: Supplies isolated 3.3V logic rails for microcontroller-based analog/digital I/O conditioning circuits in DIN-rail mounted industrial automation modules. IC Role / Device Role / Timing Role: High-reliability DC/DC converter providing stable 3.3V under wide ambient (-40°C to +85°C) and input (2.7–5.5V) variations. Use Value: Integrates thermal shutdown (150°C), overtemperature hysteresis (25°C), and hiccup-mode short-circuit protection to ensure robust operation in unventilated enclosures. |
| Portable Test Equipment | Medical Sensor Hub |
Use Scenario: Powers mixed-signal ASICs and precision ADCs in handheld multimeters and portable oscilloscopes powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Efficient step-down regulator maintaining 3.3V output as battery discharges from 4.2V to 2.7V, with ultra-low quiescent current in standby. Use Value: Achieves 70µA no-load IQ in PFM mode and <200mV dropout at full load, extending battery runtime while meeting stringent EMI requirements via selectable PWM/PFM modes. |
Use Scenario: Supplies 3.3V to low-power sensor signal chains (ECG, SpO₂, temperature) in wearable patient monitoring hubs with strict leakage and noise limits. IC Role / Device Role / Timing Role: Low-noise, low-ripple POL regulator with optional 2–4MHz switching to avoid sensitive RF bands and minimize conducted emissions. Use Value: Supports external synchronization and phase shifting to eliminate beat frequencies between multiple ISL8016IR33Z units powering adjacent sensor channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS54620RGYR | 6A, 3.3V fixed output; 4.5–17V input; higher VIN range; no PFM mode; 1.5% output accuracy. | Designed for higher-input industrial supplies; lacks pre-bias start and margining; requires external compensation. | Select when input exceeds 5.5V or when strict PWM-only operation is required; not drop-in due to different pinout and biasing. |
| Analog Devices ADP2384ACPZ-R7 | 6A, adjustable output (0.6–5V); 4.5–20V input; 1% accuracy; includes spread-spectrum modulation. | Requires external resistors to set 3.3V; wider input range increases solution size; adds EMI reduction feature. | Choose for high-VIN systems needing EMI mitigation; requires redesign of feedback network and layout; not pin-compatible. |
Compared with TPS54620RGYR and ADP2384ACPZ-R7, the ISL8016IR33Z offers superior low-input operation (2.7V min), integrated margining and pre-bias start, and lower quiescent current in PFM mode - making it optimal for battery-powered and space-constrained 3.3V POL applications where input voltage stays below 5.5V.
Availability
ISL8016IR33Z is available at Aetrix Electronics and suitable for FPGA power delivery, industrial PLC I/O modules, and portable test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8016IR33Z 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 Corporation acquired Intersil in 2017 and continues to manufacture and support its high-performance analog and power management portfolio.
The ISL8016IR33Z belongs to Renesas' ISL80xx family of monolithic synchronous buck regulators, designed specifically for high-efficiency, low-noise point-of-load conversion in space-constrained industrial, medical, and portable electronics.
FAQ
What is the output voltage tolerance of the ISL8016IR33Z over temperature and load?
The ISL8016IR33Z delivers 3.3V output with ±1% accuracy across the full operating temperature range (-40°C to +85°C), load (0–6A), and line (2.7–5.5V input) conditions. This specification is guaranteed by design and verified in production testing per FN7616 Rev 1.00 datasheet Section "Analog Specifications" - ensuring stable regulation for precision digital logic rails without external trimming.
Can the ISL8016IR33Z operate with a 2.7V input and still deliver 6A at 3.3V output?
No - the ISL8016IR33Z cannot sustain 6A at 3.3V output with only 2.7V input because the required minimum input exceeds the output voltage plus dropout. At 2.7V input, the maximum achievable output is limited by 100% duty cycle and internal losses; practical operation at 3.3V requires ≥3.5V input. The 2.7V minimum applies to lower output voltages (e.g., 1.2V, 1.8V) per datasheet Table 1.
How does the ISL8016IR33Z handle startup into a pre-biased output?
The ISL8016IR33Z supports controlled startup into pre-biased outputs via internal circuitry that prevents reverse current flow during soft-start. When enabled, it monitors the VFB pin and delays high-side FET turn-on until the output voltage begins rising, avoiding disruptive current injection - a critical feature confirmed in FN7616 Section "Theory of Operation" and validated in Figure 24 (Soft-Start with Pre-Biased 1V).
What is the purpose of the ISET pin on the ISL8016IR33Z, and what is its default configuration?
The ISET pin sets the peak output current limit: floating = 6A (default for ISL8016IR33Z), VIN = 4A, SGND = 2A. This allows hardware-selectable OCP thresholds without software or external components. The default floating state matches the 6A rating of the ISL8016IR33Z, and the corresponding peak limit is 7.7–11.5A depending on operating conditions per datasheet page 8.
Does the ISL8016IR33Z require external compensation components?
The ISL8016IR33Z supports both internal and external compensation. With FS tied to VIN, it uses internal compensation (55pF + 168kΩ network) and requires COMP tied to SGND. For custom loop response, an external RC network can be connected to COMP/VFB when FS is resistor-programmed - as detailed in FN7616 Section "Pin Descriptions" and Figure 2's typical application diagram.
ISL8016IR33Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 6A
- Frequency - Switching:
- 525kHz ~ 3.9MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
ISL8016IR33Z FAQ
1.How can I place an order for ISL8016IR33Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8016IR33Z 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 ISL8016IR33Z reliable?
The price and inventory of ISL8016IR33Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8016IR33Z is usually 5 days.
3.What payment methods are accepted for ISL8016IR33Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8016IR33Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8016IR33Z?
ISL8016IR33Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8016IR33Z 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 ISL8016IR33Z?
For technical support, including ISL8016IR33Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8016IR33Z requirements.
6.How does Aetrix verify that ISL8016IR33Z is sourced from the original manufacturer or authorized distributors?
All ISL8016IR33Z 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 ISL8016IR33Z meets industry standards.
7.What is the process for return or replacement of ISL8016IR33Z?
All ISL8016IR33Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL8016IR33Z, 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 ISL8016IR33Z part is unused and in its original packaging.
Return procedure for ISL8016IR33Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL8016IR33Z 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
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
