My Inquiry
My Account
Renesas ISL8016IR18Z-T7A
- Part No.:
- ISL8016IR18Z-T7A
- Manufacturer:
- Renesas
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
ISL8016IR18Z-T7A.pdf
- Description:
- IC REG BUCK 1.8V 6A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL8016IR18Z-T7A from Renesas (formerly Intersil) is a 6A monolithic synchronous buck regulator delivering 1.8V output from 2.7–5.5V input, featuring adjustable current limit (6A default), 1% reference accuracy over temperature/load/line, and 97% peak efficiency at 1.8V/6A. It integrates P- and N-channel MOSFETs with 45mΩ/35mΩ typical RDS(on) and supports phase interleaving for >6A applications in µC/FPGA power supplies.
For engineers reviewing the ISL8016IR18Z-T7A datasheet, ISL8016IR18Z-T7A pinout, ISL8016IR18Z-T7A application, or ISL8016IR18Z-T7A equivalent, key selection considerations include its fixed 1.8V output, 1MHz default switching frequency, pre-bias start capability, reverse current protection, and thermal shutdown at 150°C - all critical for high-density POL designs requiring stable low-noise DC/DC conversion.
Technical Context
The ISL8016IR18Z-T7A employs current-mode PWM control with slope compensation (360mV/Ts) and internal transconductance error amplifier (100µA/V) for fast transient response and loop stability. Its dual-mode operation - forced PWM or PFM via SYNCIN pin - enables optimized efficiency across load range: 70µA quiescent current in PFM no-load mode versus 15mA at 1MHz PWM.
It implements robust protection including hiccup-mode short-circuit response (17-cycle OCP counter), negative current sensing (−3A threshold), and soft-stop output discharge during disable. The 20-lead 3×4mm QFN package features exposed pad tied to SGND, enabling θJA = 42°C/W and θJC = 5°C/W for high-power density thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% over −40°C to +85°C - eliminates external feedback divider, reduces BOM count and layout sensitivity. |
| Max Output Current | 6A continuous - supported by integrated 45mΩ P-MOSFET and 35mΩ N-MOSFET at VIN=5V, enabling single-chip 1.8V/6A POL without external switches. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), 3.3V rails, and USB-powered systems. |
| Switching Frequency | Default 1MHz (FS tied to VIN); adjustable 500kHz–4MHz via resistor - allows EMI optimization and inductor size trade-off (e.g., 1µH at 1MHz). |
| Efficiency | Up to 97% at 1.8V/6A, VIN=5V - achieved via synchronous rectification and low RDS(on), reducing thermal load in compact PCB areas. |
| Quiescent Current | 70µA in PFM no-load mode - extends battery life in portable instruments and always-on subsystems. |
| Protection Features | Over-temperature (150°C), hiccup-mode OCP, reverse current blocking, pre-bias start, and soft-stop discharge - ensures safe startup and fault recovery without external circuitry. |
Pinout & Package
ISL8016IR18Z-T7A is housed in a RoHS-compliant, lead-free 20-lead 3×4mm QFN package (L20.3x4) with exposed thermal pad. The exposed pad must be soldered to SGND plane using multiple vias for optimal thermal performance (θJC = 5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,19,20 PGND | Power ground | High-current return path for PHASE node; must be low-inductance connection to input/output capacitors. |
| 2,3,4 PHASE | Switching node | Connects to inductor; carries high di/dt; requires minimized loop area to reduce EMI and voltage spikes. |
| 5,6,7 VIN | Input supply | Accepts 2.7–5.5V; requires two 22µF ceramic capacitors placed close to pins for high-frequency decoupling. |
| 8 PG | Power-good open-drain output | Signals regulation status after 1ms delay; requires 10–100kΩ pull-up to VIN for logic-level interface. |
| 10 SYNCIN | Mode selection/synchronization input | Pull high for PWM, low for PFM, or drive with external clock (500kHz–4MHz) for system-wide timing alignment. |
| 11 EN | Enable control | Active-high logic; internal 1MΩ pull-down prevents floating; drives low to shut down and discharge output. |
| 12 FS | Frequency set | Resistor to SGND sets switching frequency (500kHz–4MHz); tied to VIN for default 1MHz with internal compensation. |
| 14 ISET | Current limit configuration | Floating = 6A peak limit; connects to VIN = 4A; to SGND = 2A - enables scalable current protection without redesign. |
| 15 SS | Soft-start control | Tied to SGND = 1ms internal ramp; capacitor to SGND adjusts rise time - prevents inrush into pre-biased outputs. |
| 16 COMP / 17 VFB | Compensation / feedback | VFB senses output via internal 1.8V reference; COMP used only with external compensation (FS resistor); internal compensation uses VFB-only network. |
| 18 SGND | Signal ground | Reference for VFB, COMP, and analog blocks; must be isolated from PGND except at single-point connection under EPAD. |
Key Features
| Feature | Design Value |
|---|---|
| 1% reference accuracy over temp/load/line | Ensures ±18mV output tolerance at 1.8V across full operating range, eliminating need for post-regulation trimming in precision FPGA core supplies. |
| Adjustable current limit (2A/4A/6A) | Configurable via ISET pin to match system-level fuse or thermal limits without changing layout or component values. |
| Pre-bias start capability | Allows safe startup into an already energized output rail (e.g., hot-swap or backup power scenarios), preventing reverse current flow. |
| Phase interleaving support | SYNCOUT/SYNCIN interface enables precise master-slave timing alignment for multi-phase 12A+ designs with reduced input/output ripple. |
| 100% duty-cycle operation | Enables <200mV dropout at 6A, supporting ultra-low headroom applications like Li-ion battery systems near end-of-discharge. |
| Soft-stop output discharge | Actively discharges output capacitor when disabled, preventing unintended downstream device wake-up or latch-up during power sequencing. |
Applications
| DC/DC POL Modules | µC/µP and FPGA Core Power |
|---|---|
Use Scenario: Compact, board-mounted point-of-load converter supplying 1.8V to high-performance microcontrollers in space-constrained industrial controllers. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing regulated 1.8V at up to 6A with fast transient response to CPU burst loads. Use Value: Integrated MOSFETs and 1MHz operation minimize footprint (<0.15in²), while ±1% accuracy ensures reliable core voltage compliance per ARM Cortex-A series specs. |
Use Scenario: Dedicated 1.8V rail for FPGA I/O banks or transceiver power in telecom line cards requiring low noise and tight regulation. IC Role / Device Role / Timing Role: Fixed-output buck regulator with PFM/PWM mode selection to balance efficiency and spectral purity in mixed-signal environments. Use Value: 70µA quiescent current in PFM mode extends standby time; SYNCIN synchronization avoids beat frequencies with adjacent clock domains. |
| Portable Instruments | Li-ion Battery Powered Devices |
Use Scenario: Handheld test equipment powered by dual-cell Li-ion (6–8.4V) with intermediate 1.8V rail for ADC/DAC signal chain. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating from 3.3V intermediate bus, delivering clean 1.8V with minimal thermal rise. Use Value: 97% peak efficiency and 42°C/W θJA prevent thermal throttling in sealed enclosures; pre-bias start supports hot-plug battery replacement. |
Use Scenario: Wearable medical sensor node powered by single-cell Li-ion (3.0–4.2V) requiring regulated 1.8V for BLE SoC and sensors. IC Role / Device Role / Timing Role: Low-quiescent-current buck regulator maintaining regulation down to 2.7V input, supporting full battery discharge cycle. Use Value: 100% duty-cycle operation sustains 1.8V output until battery reaches 2.7V, maximizing usable capacity; reverse current protection prevents battery drain during sleep. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54620RGYT | 6A, 3–17V input, adjustable output; 2.5µA shutdown current; no pre-bias start; 12-pin WQFN vs 20-pin QFN. | Wider input range suits 12V intermediate buses; lacks pre-bias and reverse current protection - unsuitable for hot-swap or battery backup. | Select when input exceeds 5.5V or ultra-low shutdown IQ is required; verify layout compatibility due to different pinout and compensation scheme. |
| MP2315GJ-Z | 6A, 4.5–28V input, adjustable output; 25µA quiescent current; no PFM mode; fixed 1.8V variant not available - requires external resistors. | Better suited for 12V/24V industrial inputs; higher minimum input excludes direct Li-ion use; no light-load PFM reduces battery runtime. | Choose for cost-sensitive 12V POL where 1.8V is set externally; avoid in battery-powered designs needing PFM or sub-4.5V operation. |
Compared with TPS54620RGYT and MP2315GJ-Z, the ISL8016IR18Z-T7A uniquely combines fixed 1.8V output, pre-bias start, PFM efficiency at light loads, and reverse current blocking - making it optimal for space-constrained, battery-operated 1.8V systems where reliability and seamless power sequencing are critical.
Availability
ISL8016IR18Z-T7A is available at Aetrix Electronics and suitable for DC/DC POL modules, µC/FPGA power delivery, and Li-ion battery-powered devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8016IR18Z-T7A 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 acquired Intersil in 2017 and maintains its high-performance analog and power management portfolio, emphasizing reliability, automotive-grade qualification, and long-term product availability.
The ISL8016IR18Z-T7A belongs to Renesas' high-efficiency synchronous buck regulator family designed specifically for demanding point-of-load applications in computing, communications, and portable electronics where thermal density, transient response, and protection integrity are paramount.
FAQ
What is the output voltage tolerance of the ISL8016IR18Z-T7A over temperature and load?
The ISL8016IR18Z-T7A delivers 1.8V output with ±1% tolerance across −40°C to +85°C ambient temperature, full 0–6A load range, and 2.7–5.5V input voltage. This specification is guaranteed by the 0.6V bandgap reference and precision feedback network internal to the ISL8016IR18Z-T7A, eliminating external resistor drift errors.
Does the ISL8016IR18Z-T7A support pre-bias start, and how is it enabled?
Yes, the ISL8016IR18Z-T7A supports pre-bias start inherently - no external components or configuration are required. When EN is asserted while the output is already biased (e.g., by another supply), the ISL8016IR18Z-T7A actively prevents reverse current flow and ramps the output from the pre-biased level without disruption.
What is the maximum achievable output current when paralleling two ISL8016IR18Z-T7A devices?
Two ISL8016IR18Z-T7A devices can be paralleled using phase interleaving to deliver up to 12A at 1.8V. As shown in Figure 3 of the FN7616 datasheet, master-slave synchronization via SYNCOUT/SYNCIN reduces input and output ripple, and the ISL8016IR18Z-T7A's current-sharing capability ensures balanced load distribution without external current-sense resistors.
How does the ISL8016IR18Z-T7A handle short-circuit conditions?
The ISL8016IR18Z-T7A responds to output short circuits with hiccup-mode protection: after 17 consecutive overcurrent detections, it shuts down for eight soft-start periods (~8ms at default 1MHz), then attempts automatic restart. This limits average power dissipation and prevents thermal damage while enabling self-recovery once the fault clears.
Can the ISL8016IR18Z-T7A operate with input voltage below 2.7V?
No - the ISL8016IR18Z-T7A has a guaranteed operating input range of 2.7V to 5.5V. Below 2.7V, undervoltage lockout (UVLO) disables the regulator; the rising UVLO threshold is 2.7V (typical), with hysteresis ensuring clean turn-on. Operation below this violates the Absolute Maximum Ratings and may result in unstable regulation or undefined behavior.
ISL8016IR18Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 1.8V
- 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)
ISL8016IR18Z-T7A FAQ
1.How can I place an order for ISL8016IR18Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8016IR18Z-T7A 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 ISL8016IR18Z-T7A reliable?
The price and inventory of ISL8016IR18Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8016IR18Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL8016IR18Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8016IR18Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8016IR18Z-T7A?
ISL8016IR18Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8016IR18Z-T7A 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 ISL8016IR18Z-T7A?
For technical support, including ISL8016IR18Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8016IR18Z-T7A requirements.
6.How does Aetrix verify that ISL8016IR18Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8016IR18Z-T7A 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 ISL8016IR18Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL8016IR18Z-T7A?
All ISL8016IR18Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8016IR18Z-T7A, 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 ISL8016IR18Z-T7A part is unused and in its original packaging.
Return procedure for ISL8016IR18Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL8016IR18Z-T7A 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…
