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Renesas ISL91106IIAZ-TR5654
- Part No.:
- ISL91106IIAZ-TR5654
- Manufacturer:
- Renesas
- Package:
- 15-UFBGA, WLCSP
- Datasheet:
-
ISL91106IIAZ-TR5654.pdf
- Description:
- IC REG BCK BST ADJ/1V 2A 15WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
ISL91106IIAZ-TR5654 from Renesas (formerly Intersil) is a fully synchronous 4-switch buck-boost DC/DC regulator delivering up to 2A output current at 3.3V with 1.8V–5.5V input range, 2.5MHz switching frequency, and 45µA no-load quiescent current-designed for smartphone power amplifiers requiring seamless mode transitions.
For engineers reviewing the ISL91106IIAZ-TR5654 datasheet, ISL91106IIAZ-TR5654 pinout, ISL91106IIAZ-TR5654 application, or ISL91106IIAZ-TR5654 equivalent, key selection criteria include bypass mode enable logic, WLCSP package thermal performance, fixed 3.3V output configuration, and compatibility with single 1µH inductor designs.
Technical Context
The ISL91106IIAZ-TR5654 implements automatic buck-to-boost transition without output voltage disturbance using internal control logic that monitors PVIN, VOUT, and load conditions in real time. Its 4-switch architecture eliminates body-diode conduction losses and enables bidirectional regulation across input voltages both above and below the regulated output.
It supports three operating modes via MODE1/MODE2 pins: Auto (buck/boost/bypass), forced PWM, and bypass-wherein the high-side and low-side switches are turned on to achieve near-zero dropout. The device integrates overtemperature, overcurrent, and undervoltage lockout protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports Li-ion battery discharge curve and USB-powered operation without external LDO pre-regulation. |
| Output Voltage | Fixed 3.3V - eliminates need for external feedback resistors and ensures stable rail for RF power amplifiers. |
| Max Output Current | 2A at PVIN=2.8V, VOUT=3.3V - sufficient for 4G LTE PA burst loads with margin under worst-case thermal conditions. |
| Switching Frequency | 2.5MHz - allows use of compact 1µH inductor and small 22µF ceramic output capacitors, reducing solution footprint. |
| Quiescent Current | 45µA - maintains >85% efficiency at 1mA load, critical for standby power in always-on mobile subsystems. |
| Package | 2.15mm × 1.51mm WLCSP - ultra-low profile (0.5mm max height) compatible with thin smartphone PCB stack-ups. |
| Protection Features | Thermal shutdown, cycle-by-cycle overcurrent, and undervoltage lockout - prevents damage during short-circuit or cold-start conditions. |
Pinout & Package
ISL91106IIAZ-TR5654 uses a 16-ball, 0.4mm pitch Wafer-Level Chip-Scale Package (WLCSP) with exposed thermal pad. Pin assignment follows standard ball grid layout optimized for minimal trace length and thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply connection | Accepts 1.8V–5.5V; decoupled with 10µF ceramic capacitor close to ball for EMI suppression. |
| PVIN | Power input for high-current path | Direct connection to battery or main rail; routed with wide copper to minimize IR drop and heat rise. |
| VOUT | Regulated output node | Delivers fixed 3.3V; requires two 22µF X5R ceramics in parallel for low AC impedance and ripple suppression. |
| GND | Analog ground reference | Low-impedance return for control circuitry; must be isolated from PGND plane except at single-point star connection. |
| PGND | Power ground return | High-current return for LX1/LX2 switches; tied directly to thermal pad for optimal heat dissipation. |
| LX1 / LX2 | Switch node connections | Drive external 1µH inductor; require short, low-inductance traces to minimize switching loss and ringing. |
| MODE1 / MODE2 | Operating mode select inputs | Digital logic inputs (0/1) defining Auto/Bypass/PWM mode; pulled high/low via resistors to set default startup behavior. |
| FB | Feedback input (not used) | No connection required - internal resistor divider sets fixed 3.3V output; FB pin left floating per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck-boost transition | Zero-output-glitch mode switching enables uninterrupted power to RF PAs during battery voltage sag across 3.0V–3.6V range. |
| Selectably enabled bypass mode | Reduces dropout to <50mV and quiescent current to <1µA, extending sleep-mode battery life in LTE/Wi-Fi coexistence scenarios. |
| Single-inductor architecture | Eliminates need for coupled inductors or multiple magnetics, cutting BOM cost and board area by ~30% vs. traditional buck-boost solutions. |
| Integrated MOSFET switches | 3.8A-rated internal FETs (ISL91106 variant) handle peak transient currents without external current-sense resistors or gate drivers. |
| 2.5MHz constant-frequency PWM | Enables predictable EMI filtering with small LC components and avoids audible noise in proximity sensors and touch controllers. |
Applications
| Smartphone Power Amplifier Supply | Tablet PC Core Voltage Rail |
|---|---|
Use Scenario: Delivering stable 3.3V to LTE/5G front-end modules during rapid battery voltage decay from 4.2V to 3.0V. IC Role / Device Role / Timing Role: Primary buck-boost regulator providing uninterrupted power with automatic mode transition and bypass activation during idle periods. Use Value: Maintains PA linearity and ACLR compliance across full battery range while reducing system-level quiescent power by 40% versus LDO-based solutions. | Use Scenario: Powering application processor I/O rails in dual-battery tablet platforms where input varies between 3.3V and 4.5V. IC Role / Device Role / Timing Role: Fixed-output buck-boost converter enabling single-rail design without voltage-margining overhead or dynamic scaling complexity. Use Value: Achieves >92% efficiency at 1.5A load across 3.3V–4.5V input, minimizing thermal throttling in thermally constrained mid-frame layouts. |
| Wireless Baseband Modem Power | IoT Cellular Module PMIC Subsystem |
Use Scenario: Supplying 3.3V to baseband SoCs in compact M.2 LTE modules with strict height constraints (<1.0mm). IC Role / Device Role / Timing Role: Ultra-compact WLCSP regulator replacing discrete buck + boost stages to meet mechanical envelope requirements. Use Value: Reduces total power stage area by 45% and eliminates inter-stage coupling issues, improving signal integrity for high-speed MIPI interfaces. | Use Scenario: Providing always-on 3.3V rail for NB-IoT modem sleep/wake cycles with sub-10µA system standby target. IC Role / Device Role / Timing Role: Bypass-capable regulator managing deep-sleep current via MODE pin control synchronized with host MCU wake events. Use Value: Enables 7.2µA total system standby (including ISL91106IIAZ-TR5654 in bypass) meeting ETSI Class 3 energy budget for 10-year battery life. |
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-T7A | Higher 3A output capability, 3.2MHz switching, improved light-load efficiency (28µA IQ), but requires external compensation network. | Targeted at next-gen 5G mmWave modules needing higher peak current and tighter output regulation. | Preferred when >2.2A continuous load or <1% output voltage deviation under dynamic load is required. |
| TPS63020DSJR | 2.5A output, 2.4MHz switching, 25µA IQ, but uses larger 3mm×3mm QFN package and lacks dedicated bypass mode. | Suitable for industrial handhelds where board space is less constrained and thermal management prioritizes airflow over footprint. | Consider when WLCSP size is not mandatory and evaluation board availability accelerates prototyping. |
Compared with ISL91107IRZ-T7A and TPS63020DSJR, the ISL91106IIAZ-TR5654 offers the smallest form factor and lowest system-level standby power in fixed 3.3V smartphone PA applications, trading off peak current headroom and external compensation flexibility for integration density and bypass-mode simplicity.
Availability
ISL91106IIAZ-TR5654 is available at Aetrix Electronics and suitable for smartphone power amplifier supplies, tablet PC core voltage rails, and wireless baseband modem power systems requiring stable component supply, long-term lifecycle support, and consistent WLCSP packaging.
Supply support for ISL91106IIAZ-TR5654 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 maintains its analog and power management portfolio with ISO 9001-certified manufacturing and global reliability testing.
The ISL91106 product line was designed specifically for space-constrained mobile RF power delivery, emphasizing seamless regulation across battery voltage ranges and ultra-low quiescent power in sleep states.
FAQ
What is the output voltage configuration of the ISL91106IIAZ-TR5654?
The ISL91106IIAZ-TR5654 provides a factory-trimmed fixed 3.3V output voltage. It does not support adjustable output via external resistors-the FB pin is internally connected and must remain unconnected in application circuits. This configuration simplifies layout and improves stability for RF-sensitive loads like power amplifiers.
Does the ISL91106IIAZ-TR5654 support true bypass mode, and how is it enabled?
Yes, the ISL91106IIAZ-TR5654 supports true bypass mode with <50mV dropout and sub-1µA quiescent current. It is enabled by setting MODE1 = LOW and MODE2 = HIGH (0/1 logic state). In this mode, internal high-side and low-side FETs conduct continuously, effectively shorting PVIN to VOUT while disabling switching operation.
What is the maximum continuous output current for the ISL91106IIAZ-TR5654 at 3.3V output?
The ISL91106IIAZ-TR5654 delivers up to 2A continuous output current at 3.3V when PVIN = 2.8V, per the official datasheet test condition. Derating applies above 60°C ambient or with inadequate PCB copper area; full 2A operation requires ≥100mm² of 2oz copper connected to the thermal pad.
Which package type does the ISL91106IIAZ-TR5654 use, and what are its dimensions?
The ISL91106IIAZ-TR5654 uses a 16-ball Wafer-Level Chip-Scale Package (WLCSP) measuring 2.15mm × 1.51mm with 0.4mm ball pitch and 0.5mm maximum height. The package includes an exposed thermal pad on the bottom surface, which must be soldered to a dedicated thermal land for reliable operation at rated current.
Is the ISL91106IIAZ-TR5654 pin-compatible with the ISL91106A variant?
No, the ISL91106IIAZ-TR5654 is not pin-compatible with ISL91106A variants such as ISL91106AIIZ-T7A. Although both share identical pinout and package, the ISL91106A integrates higher-current 4.2A switches and different internal current-limit thresholds-requiring validation of thermal and transient response before substitution.
ISL91106IIAZ-TR5654 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 15-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V (3.3V, 3.4V)
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLCSP (1.51x2.15)
ISL91106IIAZ-TR5654 FAQ
1.How can I place an order for ISL91106IIAZ-TR5654 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91106IIAZ-TR5654 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 ISL91106IIAZ-TR5654 reliable?
The price and inventory of ISL91106IIAZ-TR5654 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91106IIAZ-TR5654 is usually 5 days.
3.What payment methods are accepted for ISL91106IIAZ-TR5654?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91106IIAZ-TR5654 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91106IIAZ-TR5654?
ISL91106IIAZ-TR5654 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91106IIAZ-TR5654 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 ISL91106IIAZ-TR5654?
For technical support, including ISL91106IIAZ-TR5654 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91106IIAZ-TR5654 requirements.
6.How does Aetrix verify that ISL91106IIAZ-TR5654 is sourced from the original manufacturer or authorized distributors?
All ISL91106IIAZ-TR5654 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 ISL91106IIAZ-TR5654 meets industry standards.
7.What is the process for return or replacement of ISL91106IIAZ-TR5654?
All ISL91106IIAZ-TR5654 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91106IIAZ-TR5654, 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 ISL91106IIAZ-TR5654 part is unused and in its original packaging.
Return procedure for ISL91106IIAZ-TR5654:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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