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Renesas ISL91132IINZ-T
- Part No.:
- ISL91132IINZ-T
- Manufacturer:
- Renesas
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
ISL91132IINZ-T.pdf
- Description:
- IC REG BOOST PROG 1.8A 16WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,875
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Product details
Overview
ISL91132IINZ-T from Renesas Electronics is a high-efficiency 1.8A synchronous boost regulator with integrated input-to-output bypass functionality, designed for single-cell Li-ion/Li-polymer battery systems. It delivers up to 1.8A at VOUT = 3.5V from VIN = 2.5V, features 38mΩ bypass MOSFET, 2.5MHz switching frequency, and operates across -40°C to +85°C for smartphone and RF power amplifier supply rails.
For engineers reviewing the ISL91132IINZ-T datasheet, ISL91132IINZ-T pinout, ISL91132IINZ-T application, or ISL91132IINZ-T equivalent, key selection criteria include fixed 3.5V/3.7V dual-output capability, forced/auto bypass mode control via BYPS pin, ultra-low 45μA quiescent current in Forced Bypass mode, and WLCSP-16 (1.78mm × 1.78mm) package compatibility with space-constrained portable designs.
Technical Context
The ISL91132IINZ-T implements valley-current-mode PWM control with internal N- and P-channel MOSFETs (rDSON_N = 45mΩ, rDSON_P = 40mΩ at VIN = 3.5V), supporting seamless transition between boost and bypass operation. Its dual-mode architecture uses a dedicated 38mΩ P-channel bypass FET (Q3) controlled independently of the boost switches.
Bypass entry is determined by either external BYPS pin state (LOW = Forced Bypass) or VIN–VOUT hysteresis (AUTO BYPASS threshold: ±100mV). Soft-start employs two-stage linear current sourcing (ILIN1 = 1300mA, ILIN2 = 2400mA) before entering regulated boost mode, with fault recovery via 20ms hiccup-cycle reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.5V (LO) / 3.7V (HI) selectable via VSEL pin; enables load transient compensation without external feedback resistors. |
| Max Output Current | 1.8A DC at VIN = 2.5V, VOUT = 3.5V; supports peak burst current up to 2A for <600µs pulses in RF PA applications. |
| Quiescent Current | 45μA in Forced Bypass mode; reduces standby power loss in always-on subsystems like USB OTG power sources. |
| Switching Frequency | 2.5MHz (typical); allows use of compact 0.47µH inductors and minimizes EMI filtering requirements. |
| Bypass RDS(ON) | 38mΩ; achieves <150mV dropout at 1.5A, enabling efficient near-input-voltage operation for battery-powered RF stages. |
| Input Voltage Range | 2.35V to 5.4V; accommodates full Li-ion discharge curve (4.2V → 2.7V) while maintaining regulation and bypass capability. |
| Protection Features | Integrated overcurrent (hiccup mode), thermal shutdown (150°C), undervoltage lockout (2.35V rising), and output disconnect on disable. |
Pinout & Package
ISL91132IINZ-T is housed in a 16-ball, 0.4mm pitch, 1.78mm × 1.78mm Wafer-Level Chip-Scale Package (WLCSP) per drawing W4x4.16E, optimized for minimal PCB footprint in thin mobile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | EN | Active-high enable input; logic HIGH (>1.2V) activates regulator; pull-down resistor (1.5MΩ) ensures default disable. |
| A2 | PG | Open-drain power-good flag; asserts HIGH-Z when VOUT reaches 96% of target and remains stable; deasserts during overtemp or OCP warning. |
| A3, A4 | VIN | Main power input (2.35–5.4V); dual pins reduce IR drop and improve thermal performance under 1.8A load. |
| B1 | VSEL | Output voltage select; HIGH selects 3.7V (HI), LOW selects 3.5V (LO); enables dynamic scaling for varying RF PA bias conditions. |
| B2, C2, D1 | GND | Analog ground reference; separate from PGND to prevent noise coupling into error amplifier and soft-start circuitry. |
| B3, B4 | VOUT | Regulated boost/bypass output; requires 22µF ceramic capacitor to PGND; dual pins handle high pulsed currents in RF applications. |
| C1 | BYPS | Bypass mode control; LOW forces bypass (Q3 active, rest disabled), HIGH enables auto-bypass hysteresis-based entry. |
| C3, C4 | LX | Switch node connection to inductor; carries high di/dt switching current; must be routed with minimal loop area to limit EMI. |
| D2, D3, D4 | PGND | Power ground for LX and internal FETs; low-inductance connection essential for stable valley-current sensing and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Input-to-output bypass | 38mΩ integrated P-MOSFET enables <150mV dropout at 1.5A, extending battery runtime in near-VIN operating regions. |
| Dual fixed output options | 3.5V/3.7V selection via VSEL pin eliminates external resistor networks and simplifies layout for multi-PA bias schemes. |
| Ultra-low quiescent current | 45μA in Forced Bypass mode minimizes leakage in always-on USB OTG or sensor hub power rails. |
| High-frequency operation | 2.5MHz switching allows 0.47µH inductors and reduces output capacitance requirements to 10–22µF ceramic. |
| Robust protection suite | Integrated hiccup-mode OCP, thermal shutdown (150°C), UVLO (2.35V), and output disconnect on disable ensure system reliability. |
Applications
| Smartphones and Tablet PCs | 2G/3G/4G RF Power Amplifiers |
|---|---|
Use Scenario: Supplying core logic and display backlight in ultra-thin mobile platforms with single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary boost regulator providing stable 3.5V/3.7V rail from 2.7–4.2V battery; enters bypass mode during high-VIN states to maximize efficiency. Use Value: 96% peak efficiency and 45μA bypass IQ extend usable battery life by >12% versus conventional boost-only solutions. | Use Scenario: Biasing multi-stage RF power amplifiers requiring precise, low-noise 3.5V supply with fast transient response. IC Role / Device Role / Timing Role: High-current (1.8A) boost/bypass source delivering clean, low-dropout voltage during PA transmit bursts. Use Value: Dual VSEL-selectable outputs accommodate different PA gain stages; 2.5MHz switching suppresses interference in adjacent RF bands. |
| Wireless Communication Devices | USB OTG Power Source |
Use Scenario: Powering Bluetooth/Wi-Fi SoCs and transceivers in wearables and IoT edge nodes. IC Role / Device Role / Timing Role: Compact, high-efficiency voltage booster enabling operation across full battery discharge range while minimizing standby drain. Use Value: 108μA boost-mode IQ and forced bypass capability maintain >7-day shelf life in always-listening modes. | Use Scenario: Providing 5V VBUS from 3.7V Li-ion battery for USB On-The-Go host functionality in portable accessories. IC Role / Device Role / Timing Role: Boost regulator with programmable output (via VSEL) and robust short-circuit protection for unregulated peripheral attachment. Use Value: Integrated hiccup-mode OCP and thermal shutdown prevent damage during accidental VBUS shorts or cable faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator with bypass applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 4.8A output capability but no integrated bypass FET; requires external switch for low-dropout operation. | Targeted at higher-power applications (e.g., LCD bias), not optimized for RF PA efficiency near VIN. | Select when >2A continuous output is required and board space permits discrete bypass implementation. |
| MAX77818EWJ+T | Single-input, dual-output PMIC with buck-boost + LDO; includes 3.5V/3.7V options but lacks dedicated bypass path and 2.5MHz switching. | Designed for full-system power management (SoC + memory + peripherals), not discrete high-efficiency PA rail. | Choose when integrating multiple rails and sequencing control is prioritized over peak RF efficiency. |
Compared with TPS61088RHLR and MAX77818EWJ+T, the ISL91132IINZ-T uniquely combines 1.8A boost capability, integrated 38mΩ bypass FET, 2.5MHz operation, and dual 3.5V/3.7V outputs in a 1.78mm² WLCSP-making it optimal for space-constrained, battery-sensitive RF and mobile applications where near-VIN efficiency is critical.
Availability
ISL91132IINZ-T is available at Aetrix Electronics and suitable for smartphones and tablet PCs, 2G/3G/4G RF power amplifiers, and USB OTG power sources requiring stable component supply across industrial temperature ranges.
Supply support for ISL91132IINZ-T 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 is a global semiconductor leader delivering trusted embedded design innovation, with expertise in analog, power, and mixed-signal solutions for automotive, industrial, and consumer markets.
The ISL91132 product line targets high-efficiency, space-constrained battery-powered systems-specifically optimizing power conversion for RF front-end modules and portable computing where dynamic input-to-output voltage tracking is essential.
FAQ
What output voltages does the ISL91132IINZ-T support?
The ISL91132IINZ-T supports two factory-configured output voltages: 3.5V (LO) and 3.7V (HI), selected dynamically via the VSEL pin. This dual-option configuration eliminates external feedback resistors and enables real-time adaptation to varying RF PA bias requirements without changing the ISL91132IINZ-T hardware layout.
How does the ISL91132IINZ-T enter Bypass mode?
The ISL91132IINZ-T enters Bypass mode in two ways: Forced Bypass (pulling BYPS pin LOW) immediately activates the 38mΩ internal P-MOSFET, while Auto Bypass (BYPS HIGH) triggers when VIN exceeds VOUT by ≥100mV for 5µs with no switching activity. Both methods disconnect the boost converter and route VIN directly to VOUT through Q3.
What is the maximum continuous output current of the ISL91132IINZ-T?
The ISL91132IINZ-T delivers up to 1.8A continuous output current at VOUT = 3.5V when VIN = 2.5V, as specified in the datasheet's Recommended Operating Conditions. It also supports 2A burst current for ≤600µs pulses, making it suitable for demanding RF power amplifier load profiles.
Does the ISL91132IINZ-T require external compensation components?
No, the ISL91132IINZ-T features fully internal compensation for its valley-current-mode control loop. No external RC networks or compensation capacitors are needed-only a 0.47µH inductor and two 22µF ceramic capacitors (input and output) are required for full operation, simplifying design and reducing BOM count.
What package type is used for the ISL91132IINZ-T?
The ISL91132IINZ-T uses a 16-ball, 0.4mm pitch, 1.78mm × 1.78mm Wafer-Level Chip-Scale Package (WLCSP) per package drawing W4x4.16E. This ultra-compact RoHS-compliant package supports fine-pitch assembly and thermal performance suited for thin mobile PCBs.
ISL91132IINZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.35V
- Voltage - Input (Max):
- 5.4V
- Voltage - Output (Min/Fixed):
- 3.15V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 1.8A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLCSP (1.78x1.78)
ISL91132IINZ-T FAQ
1.How can I place an order for ISL91132IINZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91132IINZ-T 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 ISL91132IINZ-T reliable?
The price and inventory of ISL91132IINZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91132IINZ-T is usually 5 days.
3.What payment methods are accepted for ISL91132IINZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91132IINZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91132IINZ-T?
ISL91132IINZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91132IINZ-T 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 ISL91132IINZ-T?
For technical support, including ISL91132IINZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91132IINZ-T requirements.
6.How does Aetrix verify that ISL91132IINZ-T is sourced from the original manufacturer or authorized distributors?
All ISL91132IINZ-T 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 ISL91132IINZ-T meets industry standards.
7.What is the process for return or replacement of ISL91132IINZ-T?
All ISL91132IINZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL91132IINZ-T, 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 ISL91132IINZ-T part is unused and in its original packaging.
Return procedure for ISL91132IINZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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