My Inquiry
My Account
Renesas ISL91106IIA-EVZ
- Part No.:
- ISL91106IIA-EVZ
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL91106IIA-EVZ.pdf
- Description:
- EVAL BOARD FOR ISL91106
- Quantity:
- Payment:
- Shipping:
Inventory:4,388
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL91106IIA-EVZ from Renesas (formerly Intersil) is a high-efficiency, 2.1A buck-boost DC/DC regulator with automatic mode transition and selectable bypass mode, operating from 1.8V to 5.5V input and delivering fixed 3.3V or 3.4V output or adjustable 1V–5.2V via external resistors. It uses a fully synchronous 4-switch architecture and achieves up to 96% efficiency at 2.5MHz switching frequency.
For engineers reviewing the ISL91106IIA-EVZ datasheet, ISL91106IIA-EVZ pinout, ISL91106IIA-EVZ application, or ISL91106IIA-EVZ equivalent, key selection criteria include its seamless buck/boost transition behavior, 45µA no-load quiescent current, WLCSP package footprint, and support for low-power bypass mode in portable power systems.
Technical Context
The ISL91106IIA-EVZ implements a 4-switch synchronous buck-boost topology that dynamically selects between buck, boost, or pass-through operation based on real-time VIN–VOUT relationship, eliminating output voltage disturbance during transitions. Its MODE1/MODE2 control interface enables explicit selection of bypass, forced PWM, or auto-mode operation.
It integrates overtemperature, overcurrent, and undervoltage protection circuits and supports standalone configuration without external compensation. The device operates with a single 1µH inductor and minimal passive components, leveraging a 2.5MHz switching frequency to reduce solution size.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-polymer, or dual-cell NiMH battery inputs without pre-regulation. |
| Output Current (PVIN=2.8V, VOUT=3.3V) | 2.1A - rated for sustained delivery under typical smartphone core rail conditions. |
| Switching Frequency | 2.5MHz - enables use of compact 1µH inductors and small ceramic capacitors, reducing PCB area by >30% vs. 1MHz designs. |
| No-Load Quiescent Current | 45µA - maintains high light-load efficiency critical for always-on system rails and sleep-state power budgets. |
| Peak Efficiency | 96% - achieved at mid-load with 3.3V output and 3.8V input, minimizing thermal dissipation in space-constrained modules. |
| Output Voltage Options | Fixed 3.3V/3.4V or adjustable 1V–5.2V - provides flexibility for SoC I/O, memory, or RF PA supply requirements. |
| Protection Features | Overtemperature, overcurrent, undervoltage lockout - ensures robust operation in thermally dense mobile platforms without external supervision. |
Pinout & Package
Package: 2.15mm × 1.51mm, 16-bump WLCSP (Wafer-Level Chip Scale Package) with 0.4mm pitch, bottom-side thermal pad for enhanced thermal performance in thin-profile handheld assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply connection | Accepts 1.8V–5.5V; powers internal LDOs and gate drivers; decoupled with 10µF ceramic capacitor. |
| PVIN | Power input for high-current path | Direct connection to input source for LX switching node; separate from VIN to minimize noise coupling into control circuitry. |
| VOUT | Regulated output terminal | Delivers up to 2.1A; requires 2×22µF ceramic output capacitance for stability and transient response. |
| FB | Feedback input for adjustable output | Connects to resistor divider for outputs other than fixed 3.3V/3.4V; open for fixed-output variants. |
| MODE1 / MODE2 | Dual-bit mode select interface | Configures bypass (00), forced PWM (10), or auto-mode (11); enables dynamic power-state coordination with host processor. |
| LX1 / LX2 | Switch node connections | Drive external 4-switch buck-boost power stage; require low-ESR layout and tight loop area to minimize EMI. |
| GND / PGND | Analog and power ground returns | Separate GND (control) and PGND (switching) pins reduce noise injection into feedback and reference circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck/boost mode transition | Zero-crossing detection eliminates output voltage glitch during VIN–VOUT crossover, preserving system stability without external sequencing. |
| Selectably enabled bypass mode | Direct conduction path reduces quiescent current to <1µA, extending battery life in display-off or deep-sleep states. |
| 2.5MHz constant-frequency operation | Enables consistent EMI profile and predictable filter design; avoids audible noise and simplifies compliance testing. |
| Integrated thermal and current protection | Thermal shutdown at 150°C and cycle-by-cycle current limiting prevent damage during short-circuit or overload events without external sensing. |
| Single-inductor, 4-switch architecture | Reduces BOM count by eliminating separate buck and boost inductors; improves power density and lowers total solution cost. |
Applications
| Smartphone Core Power Rail | Tablet PC Memory Supply |
|---|---|
Use Scenario: Powers application processor cores requiring stable 3.3V from a single-cell Li-ion battery whose voltage sags from 4.2V to 2.8V during discharge. IC Role / Device Role / Timing Role: Primary buck-boost regulator providing uninterrupted core rail with seamless mode transition across battery voltage range. Use Value: Eliminates need for separate buck and boost converters, reducing board area by 40% and enabling thinner form factors. | Use Scenario: Supplies DDR/LPDDR memory interfaces in tablets where output must remain regulated between 1.2V and 1.8V while input varies from 3.0V to 4.4V. IC Role / Device Role / Timing Role: Adjustable-output buck-boost regulator supporting multiple memory voltage standards via FB resistor network. Use Value: Single IC replaces two discrete regulators, lowering component count and improving transient response during memory burst access. |
| Wireless Baseband Modem Supply | 2G/3G/4G Power Amplifier Bias |
Use Scenario: Delivers clean, low-noise 3.4V supply to LTE baseband processors during active data transmission and deep-sleep cycles. IC Role / Device Role / Timing Role: High-efficiency regulator with bypass mode activated during idle periods to minimize leakage current. Use Value: Achieves 45µA quiescent current in auto-mode and sub-1µA in bypass, extending standby time by >20% versus conventional buck-only solutions. | Use Scenario: Provides dynamically adjustable bias voltage (1.5V–4.5V) to RF power amplifiers in multi-band cellular handsets. IC Role / Device Role / Timing Role: Programmable buck-boost regulator supporting envelope tracking and adaptive bias schemes via MODE pin control. Use Value: Enables real-time PA efficiency optimization across frequency bands and output power levels without external DAC or controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91107IRZ | Higher 3A output capability; improved light-load efficiency (25µA IQ); supports 1.2V–5.5V adjustable output. | Targeted for next-gen smartphones with higher SoC current demands and tighter thermal constraints. | Preferred for new designs requiring >2.1A or lower quiescent current; pin-compatible but requires updated layout for thermal pad. |
| TPS63020DSJR | 2A output; 2.5V–5.5V input; 1.2V–5.5V adjustable output; 2.4MHz switching; 25µA IQ. | Optimized for industrial and portable medical devices with extended temperature range and AEC-Q200 option. | Suitable when TI ecosystem integration or extended temp (-40°C to 125°C) is required; different pinout and package (10-pin SON). |
Compared with ISL91106IIA-EVZ, ISL91107IRZ offers higher current and lower IQ for future-proofing, while TPS63020DSJR provides broader temperature support and TI-specific toolchain compatibility-both require layout revision due to non-identical packages and thermal pad configurations.
Availability
ISL91106IIA-EVZ is available at Aetrix Electronics and suitable for smartphone power management, tablet PC subsystem regulation, and wireless communication device battery-to-rail conversion requiring stable component supply and long-term design-in support.
Supply support for ISL91106IIA-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 Corporation, formed through the acquisition of Intersil in 2017, is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and consumer markets.
The ISL91106 product line was developed specifically for high-density, battery-powered mobile devices requiring seamless voltage regulation across full battery discharge curves without external mode control logic.
FAQ
What is the primary function of the ISL91106IIA-EVZ?
The ISL91106IIA-EVZ is a fully integrated 4-switch synchronous buck-boost DC/DC regulator designed to maintain a stable output voltage when input voltage falls above or below the regulated output level. It delivers up to 2.1A with automatic mode transition and supports bypass mode for ultra-low-power states. The ISL91106IIA-EVZ is optimized for space-constrained portable electronics where battery voltage varies widely during discharge.
Does the ISL91106IIA-EVZ support adjustable output voltages?
Yes, the ISL91106IIA-EVZ supports both fixed 3.3V or 3.4V outputs and adjustable outputs from 1.0V to 5.2V using an external resistor divider connected to the FB pin. Fixed-output versions omit the FB connection. The ISL91106IIA-EVZ datasheet specifies resistor calculation formulas and stability guidelines for all adjustable configurations.
What is the purpose of the MODE1 and MODE2 pins on the ISL91106IIA-EVZ?
The MODE1 and MODE2 pins configure the ISL91106IIA-EVZ operating mode: 00 = bypass (low-IQ conduction), 10 = forced PWM (constant frequency), 11 = auto-mode (intelligent buck/boost/bypass selection). These pins allow host processors to coordinate power states dynamically. The ISL91106IIA-EVZ uses these signals to optimize efficiency across varying load and input conditions without firmware intervention.
What package type does the ISL91106IIA-EVZ use, and why is it significant?
The ISL91106IIA-EVZ uses a 2.15mm × 1.51mm, 16-bump WLCSP package with 0.4mm pitch and an exposed thermal pad. This ultra-compact footprint minimizes PCB area in thin mobile devices, while the thermal pad enables efficient heat transfer to the board. The ISL91106IIA-EVZ's WLCSP allows direct chip-scale mounting without wire bonds, improving reliability and high-frequency performance.
How does the ISL91106IIA-EVZ handle thermal protection?
The ISL91106IIA-EVZ includes integrated overtemperature protection that disables switching and places the device in thermal shutdown at approximately 150°C. Recovery occurs automatically once die temperature falls below the hysteresis threshold (~135°C). This protection operates independently of external components and is active in all modes-including bypass-ensuring safe operation under sustained overload or poor thermal conditions. The ISL91106IIA-EVZ thermal response is verified per JEDEC JESD51 standards.
ISL91106IIA-EVZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Up or Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- -
- Voltage - Input:
- 2A
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2.5MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL91106
ISL91106IIA-EVZ FAQ
1.How can I place an order for ISL91106IIA-EVZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91106IIA-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 ISL91106IIA-EVZ reliable?
The price and inventory of ISL91106IIA-EVZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91106IIA-EVZ is usually 5 days.
3.What payment methods are accepted for ISL91106IIA-EVZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91106IIA-EVZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91106IIA-EVZ?
ISL91106IIA-EVZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91106IIA-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 ISL91106IIA-EVZ?
For technical support, including ISL91106IIA-EVZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91106IIA-EVZ requirements.
6.How does Aetrix verify that ISL91106IIA-EVZ is sourced from the original manufacturer or authorized distributors?
All ISL91106IIA-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 ISL91106IIA-EVZ meets industry standards.
7.What is the process for return or replacement of ISL91106IIA-EVZ?
All ISL91106IIA-EVZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL91106IIA-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 ISL91106IIA-EVZ part is unused and in its original packaging.
Return procedure for ISL91106IIA-EVZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91106IIA-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…
