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Renesas ISL91128IIN-EVZ
- Part No.:
- ISL91128IIN-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91128IIN-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91128IINZ
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
ISL91128IIN-EVZ from Renesas is an evaluation board for the ISL91128 high-efficiency buck-boost regulator IC, designed to demonstrate dynamic voltage scaling, I²C-controlled output regulation (1.9V–5.0V), and seamless buck/boost mode transitions across 1.8V–5.5V input. It supports up to 2.4A continuous output at 3.3V with 2.5MHz switching and 30µA quiescent current, targeting smartphone and tablet power management.
For engineers reviewing the ISL91128IIN-EVZ datasheet, ISL91128IIN-EVZ pinout, ISL91128IIN-EVZ application, or ISL91128IIN-EVZ equivalent, this board enables rapid validation of battery-powered systems using advanced Li-ion chemistries, RF PA supply sequencing, and brownout-free system rail generation under variable input conditions.
Technical Context
The ISL91128IIN-EVZ implements a complete reference design for the ISL91128 WLCSP-20 buck-boost regulator, featuring a 1µH inductor, dual 22µF output capacitors, 2×10µF PVIN decoupling, and full I²C interface routing (SDA/SCL pull-ups included). It replicates the typical application circuit shown in Figure 1 of FN8732 Rev.3.00.
This board supports all programmable functions of the ISL91128: output voltage selection via I²C register 0x00 (DCDOUT[5:0]), ultrasonic mode control, soft-discharge enable/disable, and slew-rate configuration - verified per Tables 3–5 and Figures 9–14 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Board Type | Evaluation board for ISL91128 buck-boost regulator IC - not a standalone component. |
| Target Device | ISL91128IINZ (20-ball WLCSP, 2.15mm × 1.74mm, 0.4mm pitch) |
| Input Voltage Range | 1.8V to 5.5V - matches ISL91128 PVIN/VIN specs; supports single-cell Li-ion (2.5V–4.35V) and USB-supplied rails. |
| Output Capability | Programmable 1.9V–5.0V @ up to 2.4A (at VOUT=3.3V, PVIN=2.5V); validated per Figure 17 and Table on p.4. |
| Switching Frequency | 2.5MHz nominal - minimizes external inductor/capacitor size; confirmed in Analog Specs table (p.4). |
| I²C Interface | Fully implemented with SDA/SCL headers, 3.3V pull-ups, and register-accessible control (slave address 0x38, 7-bit). |
Availability
ISL91128IIN-EVZ is available at Aetrix Electronics and suitable for smartphone power architecture validation, RF power amplifier biasing, and battery voltage tracking applications requiring stable component supply and fast design iteration.
Supply support for ISL91128IIN-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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The ISL91128IIN-EVZ belongs to Renesas' high-efficiency power management evaluation platform family, engineered specifically to accelerate adoption of buck-boost regulators in space-constrained, battery-sensitive mobile and wireless devices.
FAQ
What is the ISL91128IIN-EVZ used for?
The ISL91128IIN-EVZ is an evaluation board for the ISL91128 buck-boost regulator IC. It enables engineers to validate dynamic voltage scaling, I²C-controlled output regulation (1.9V–5.0V), and seamless buck/boost transitions under real-world battery input conditions. The ISL91128IIN-EVZ includes all necessary passive components and interface headers to replicate the typical application circuit from the ISL91128 datasheet.
Does the ISL91128IIN-EVZ include the ISL91128IINZ IC?
Yes, the ISL91128IIN-EVZ board integrates one ISL91128IINZ IC - the 20-ball WLCSP variant of the ISL91128 buck-boost regulator - mounted and fully populated with supporting circuitry including inductor, input/output capacitors, and I²C pull-up resistors.
Can the ISL91128IIN-EVZ demonstrate bypass mode operation?
Yes, the ISL91128IIN-EVZ supports bypass mode as defined in the ISL91128 datasheet. Bypass mode can be enabled/disabled via I²C register bit 5 (Mode Control), allowing the ISL91128IINZ to pass input voltage directly to VOUT through its internal high-side FETs - reducing quiescent current to 6.0µA and enabling ultra-low-power sleep states.
What are the key test points and jumpers on the ISL91128IIN-EVZ board?
The ISL91128IIN-EVZ provides accessible test points for PVIN, VIN, EN, VOUT, FB, LX1, LX2, SDA, and SCL. It includes jumper options to isolate PGND/SGND, select I²C pull-up voltage (2.8V or 3.3V), and enable/disable soft discharge. These match the pinout and functional blocks described in the ISL91128 datasheet Figures 1 and 3.
Is the ISL91128IIN-EVZ compatible with standard I²C host controllers?
Yes, the ISL91128IIN-EVZ uses standard open-drain I²C signaling with 3.3V pull-ups and adheres to I²C timing specifications (400kHz max clock, tLOW/tHIGH, setup/hold times per p.5–6 of FN8732). Its slave address is 0x38 (7-bit), and it responds with ACK after valid START + address + register access - fully interoperable with common MCU-based I²C masters.
ISL91128IIN-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:
- 2.4A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91128IINZ
ISL91128IIN-EVZ FAQ
1.How can I place an order for ISL91128IIN-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91128IIN-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 ISL91128IIN-EVZ reliable?
The price and inventory of ISL91128IIN-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91128IIN-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91128IIN-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91128IIN-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91128IIN-EVZ?
ISL91128IIN-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91128IIN-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 ISL91128IIN-EVZ?
For technical support, including ISL91128IIN-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91128IIN-EVZ requirements.
6.How does Aetrix verify that ISL91128IIN-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91128IIN-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 ISL91128IIN-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91128IIN-EVZ?
All ISL91128IIN-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91128IIN-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 ISL91128IIN-EVZ part is unused and in its original packaging.
Return procedure for ISL91128IIN-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91128IIN-EVZ Tags
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DFR0571
DFRobot
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1385
Adafruit Industries LLC
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SparkFun Electronics
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Adafruit Industries LLC
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2465
Adafruit Industries LLC
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DC2468A
Analog Devices Inc.
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Analog Devices Inc.
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TPS552892EVM-111
Texas Instruments
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TPS55289EVM-093
Texas Instruments
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EPC9158
EPC
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