My Inquiry
My Account
Renesas ISL91108IIN-EVZ
- Part No.:
- ISL91108IIN-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91108IIN-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91108
- Quantity:
- Payment:
- Shipping:
Inventory:2,473
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL91108IIN-EVZ from Intersil is an evaluation board for the ISL91108IINZ fixed-output (3.3V) buck-boost regulator IC, supporting input voltages from 1.8V to 5.5V and delivering up to 1.6A DC output current with 2.6MHz switching frequency, 95% peak efficiency, and 27.5µA quiescent current - designed for compact power delivery in mobile RF power amplifier stages.
For engineers reviewing the ISL91108IIN-EVZ datasheet, ISL91108IIN-EVZ pinout, ISL91108IIN-EVZ application, or ISL91108IIN-EVZ equivalent, this page provides verified hardware configuration details, supported test conditions, component layout guidance, and direct links to the underlying ISL91108IINZ regulator's functional specifications and thermal performance data.
Technical Context
The ISL91108IIN-EVZ implements a fully populated reference design for the ISL91108IINZ WLCSP-20 buck-boost regulator, featuring a single 1µH inductor, dual 10µF input capacitors (PVIN), dual 22µF output capacitors (VOUT), and all necessary biasing for fixed 3.3V operation. It validates seamless buck-to-boost mode transitions under dynamic load and input voltage variation.
This board supports forced PWM and external clock synchronization (2.75–3.25MHz) via the MODE/SYNC pin, enables soft-start (2ms typical into buck mode), and incorporates short-circuit, over-temperature (150°C shutdown), and undervoltage lockout (1.775V rising threshold) protection - all directly inherited from the ISL91108IINZ IC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Board Type | Evaluation board for ISL91108IINZ fixed 3.3V buck-boost regulator IC. |
| Supported IC Package | 20-bump WLCSP (2.34mm × 1.72mm, 0.4mm pitch), per W4x5.20F outline. |
| Input Voltage Range | 1.8V to 5.5V - validated across full range using PVIN and VIN supply pins. |
| Output Configuration | Fixed 3.3V output; VOUT pin directly connected to FB per Figure 5 of FN8448. |
| Switching Frequency | 2.6MHz nominal - enables use of small 1µH inductor and low-ESR ceramic capacitors. |
| Thermal Protection | Validates ISL91108IINZ thermal shutdown at +150°C with 35°C hysteresis. |
| Protection Features | Confirms short-circuit response, UVLO (1.775V rising), and soft-discharge (110Ω internal pull-down). |
Availability
ISL91108IIN-EVZ is available at Aetrix Electronics and suitable for smartphone RF power amplifier biasing, tablet PMIC validation, and wireless communication device power architecture prototyping requiring stable component supply and rapid lab verification.
Supply support for ISL91108IIN-EVZ 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) is a leader in high-efficiency power management ICs, specializing in compact, high-frequency DC/DC solutions for mobile and portable electronics.
The ISL91108 product line was designed to replace discrete buck + boost solutions in space-constrained battery-powered devices, enabling single-inductor wide-input-range regulation with automatic topology selection.
FAQ
What is the primary function of the ISL91108IIN-EVZ?
The ISL91108IIN-EVZ is an evaluation board for the ISL91108IINZ buck-boost regulator IC. It provides a fully assembled, tested reference design to validate the IC's performance - including 3.3V fixed output, 1.8V–5.5V input operation, 1.6A DC capability, and seamless buck/boost mode transitions - under real-world PCB layout and thermal conditions. The ISL91108IIN-EVZ itself is not a semiconductor but a hardware platform for evaluating the ISL91108IINZ.
Does the ISL91108IIN-EVZ support adjustable output voltage?
No. The ISL91108IIN-EVZ is configured exclusively for the fixed 3.3V output version (ISL91108IINZ). Its schematic follows Figure 5 of FN8448: VOUT is directly connected to FB, with no external resistor divider. To evaluate adjustable output, the ISL91108IIA-EVZ board must be used - it supports the ISL91108IIAZ variant with external R1/R2 programming.
What external components are pre-installed on the ISL91108IIN-EVZ?
The ISL91108IIN-EVZ includes a 1µH shielded inductor (L1), two 10µF X5R ceramic capacitors on PVIN, two 22µF X5R ceramic capacitors on VOUT, and all required bias resistors and decoupling for EN, MODE/SYNC, and GND/PGND separation. No additional power components are needed to operate the ISL91108IINZ IC at its rated 1.6A DC output.
Can the ISL91108IIN-EVZ be synchronized to an external clock?
Yes. The ISL91108IIN-EVZ exposes the MODE/SYNC pin (D3), which accepts an external clock signal from 2.75MHz to 3.25MHz to force synchronous operation - reducing EMI in noise-sensitive RF applications. This functionality is inherited directly from the ISL91108IINZ IC and validated on the evaluation board per AN1903.
Where can I find the schematic and layout files for the ISL91108IIN-EVZ?
Schematic, bill of materials (BOM), and PCB layout files for the ISL91108IIN-EVZ are provided in Application Note AN1903 "ISL91108IIA-EVZ/ISL91108IIN-EVZ Evaluation Board User Guide", available on the Renesas website (formerly Intersil). The document includes test setup instructions, measurement procedures, and thermal imaging results specific to the ISL91108IIN-EVZ hardware.
ISL91108IIN-EVZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Up or Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 3.3V
- Voltage - Input:
- 1.5A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91108
ISL91108IIN-EVZ FAQ
1.How can I place an order for ISL91108IIN-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91108IIN-EVZ 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 ISL91108IIN-EVZ reliable?
The price and inventory of ISL91108IIN-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91108IIN-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91108IIN-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91108IIN-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91108IIN-EVZ?
ISL91108IIN-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91108IIN-EVZ 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 ISL91108IIN-EVZ?
For technical support, including ISL91108IIN-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91108IIN-EVZ requirements.
6.How does Aetrix verify that ISL91108IIN-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91108IIN-EVZ 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 ISL91108IIN-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91108IIN-EVZ?
All ISL91108IIN-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91108IIN-EVZ, 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 ISL91108IIN-EVZ part is unused and in its original packaging.
Return procedure for ISL91108IIN-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91108IIN-EVZ Tags
-
DFR0571
DFRobot
-
DFR0379
DFRobot
-
DFR0205
DFRobot
-
1385
Adafruit Industries LLC
-
COM-15208
SparkFun Electronics
-
1944
Adafruit Industries LLC
-
2465
Adafruit Industries LLC
-
DC2468A
Analog Devices Inc.
-
DC2841A
Analog Devices Inc.
-
TPS552892EVM-111
Texas Instruments
-
TPS55289EVM-093
Texas Instruments
-
EPC9158
EPC
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…
