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Renesas ISL91132IIQZ-T
- Part No.:
- ISL91132IIQZ-T
- Manufacturer:
- Renesas
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
ISL91132IIQZ-T.pdf
- Description:
- IC REG BOOST PROG 1.8A 16WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
ISL91132IIQZ-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 = 5.0V (VIN = 2.5V), features 38mΩ bypass FET, 2.5MHz switching frequency, and operates across 2.35V–5.4V input range.
For engineers reviewing the ISL91132IIQZ-T datasheet, ISL91132IIQZ-T pinout, ISL91132IIQZ-T application, or ISL91132IIQZ-T equivalent, key selection considerations include fixed 5.0/5.2V dual-output capability, forced/auto bypass mode control via BYPS pin, low 45µA quiescent current in Forced Bypass mode, and WLCSP-16 package compatibility with space-constrained mobile power rails.
Technical Context
The ISL91132IIQZ-T implements valley-current-mode PWM control with internal N- and P-channel MOSFETs (rDS(ON) = 45mΩ/40mΩ) and a dedicated 38mΩ bypass P-MOSFET (Q3). Its dual-mode operation-boost conversion below VIN–300mV and seamless transition to bypass above that threshold-enables high efficiency across wide VIN–VOUT differentials.
It supports fixed 5.0V/5.2V output variants via VSEL pin logic, uses internal compensation, and integrates full protection: overcurrent (hiccup mode), thermal shutdown (150°C), undervoltage lockout (2.35V rising), and output voltage clamping (5.7V). Soft-start is configured for slow ramp (350mA/700mA levels, 1200µs duration) specific to the IIQZ variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V (LO) / 5.2V (HI) selectable via VSEL pin; enables load transient droop compensation |
| Max Output Current | 1.8A DC (VIN = 2.5V, VOUT = 5.0V); supports 2A burst (tON < 600µs) for RF PA pulse loads |
| Bypass RDS(ON) | 38mΩ typical; achieves ultra-low dropout and >96% efficiency near VIN ≈ VOUT |
| Quiescent Current | 45µA in Forced Bypass mode; minimizes battery drain during system standby |
| Switching Frequency | 2.5MHz nominal; allows use of compact 0.47µH inductor and small ceramic capacitors |
| Input Voltage Range | 2.35V to 5.4V; compatible with fully discharged to fully charged single-cell Li-ion batteries |
| Package | 16-ball WLCSP, 1.78mm × 1.78mm, 0.4mm pitch; optimized for ultra-thin mobile PCBs |
Pinout & Package
ISL91132IIQZ-T is housed in a 16-ball Wafer-Level Chip-Scale Package (WLCSP) with 0.4mm pitch and 1.78mm × 1.78mm footprint. The package uses SnAgCu e1 solder balls and is RoHS-compliant with MSL3 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (A3, A4) | Power input | Supplies operating voltage (2.35–5.4V); requires local 22µF ceramic capacitor to PGND |
| VOUT (B3, B4) | Regulated output | Delivers fixed 5.0/5.2V; connects to 22µF output capacitor and load |
| LX (C3, C4) | Switch node | Drives external 0.47µH inductor; carries high-frequency AC current during boost operation |
| PGND (D2, D3, D4) | Power ground | Low-impedance return path for high-switching-current loops; must be separated from analog GND |
| GND (B2, C2, D1) | Analog ground | Reference for error amplifier, bias circuits, and PG signal; routed separately from PGND |
| EN (A1) | Enable control | Active-high logic input; pulls down to disable device and disconnect load |
| BYPS (C1) | Bypass mode select | Pull LOW for Forced Bypass (Q3 active, rest disabled); pull HIGH for Auto Bypass (entry at VIN ≥ 1.015×VOUT) |
| VSEL (A4) | Output voltage select | Pull HIGH for 5.2V (HI), LOW for 5.0V (LO); used to offset regulation setpoint for transient response |
| PG (A2) | Power-good flag | Open-drain output asserted when VOUT ≥ 96% of target; deasserted on overtemp, overcurrent, or undervoltage |
Key Features
| Feature | Design Value |
|---|---|
| Input-to-output bypass mode | 38mΩ integrated P-MOSFET enables <100mV dropout and >96% efficiency when VIN ≈ VOUT |
| Dual fixed-output configuration | 5.0V/5.2V selection via VSEL pin supports precise load transient compensation without external resistors |
| Ultra-low quiescent current | 45µA in Forced Bypass mode extends battery life in always-on system states |
| Integrated protection suite | Auto-recovering hiccup-mode overcurrent, thermal shutdown (150°C), UVLO, and output voltage clamp (5.7V) |
| Optimized soft-start | Slow-ramp profile (350mA/700mA, 1200µs) prevents inrush into large output caps at 5V output |
Applications
| Smartphone Power Management | USB OTG Power Source |
|---|---|
Use Scenario: Supplies stable 5V rail to USB peripherals from a single-cell Li-ion battery during host mode operation. IC Role / Device Role / Timing Role: Boost regulator with bypass mode ensures continuous 5V delivery as battery discharges from 4.2V to 3.0V. Use Value: Eliminates need for discrete LDO post-regulation; maintains >92% efficiency across full battery range. | Use Scenario: Powers USB 2.0/3.0 devices (keyboards, storage) directly from smartphone or tablet battery. IC Role / Device Role / Timing Role: Delivers regulated 5.0V/5.2V with fast load-step response (<100µs) to handle dynamic USB bus capacitance charging. Use Value: 2.5MHz switching enables compact 0.47µH inductor and avoids audible noise in portable audio subsystems. |
| RF Power Amplifier Supply | Tablet PC Core Logic Rail |
Use Scenario: Provides pulsed 5V supply to 4G LTE/5G NR RF power amplifiers requiring high peak current. IC Role / Device Role / Timing Role: Supports 2A burst current (tON < 600µs) while maintaining tight output regulation during transmit bursts. Use Value: Bypass mode reduces voltage droop during high-current transients, improving EVM and ACLR performance. | Use Scenario: Generates main 5V system rail for SoC I/O, display interface, and peripheral controllers in thin-profile tablets. IC Role / Device Role / Timing Role: Integrates boost + bypass in 1.78mm² WLCSP, enabling placement under narrow bezels or near battery connectors. Use Value: 16-ball WLCSP footprint minimizes PCB area and routing congestion in high-density HDI layouts. |
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 4.5A output, no integrated bypass FET; requires external MOSFET for low-dropout operation | Suitable for higher-current systems but adds complexity, board area, and cost for bypass functionality | Choose if >2A continuous output is required and layout allows external bypass circuitry |
| MAX77818EWJ+T | PMIC with buck-boost + bypass, 3.5A max, integrated fuel gauge; larger 32-pin WLP package | Targets full-system power management (not single-rail boost); includes battery monitoring and multiple outputs | Choose only when multi-rail sequencing, fuel gauging, or system-level PMIC integration is needed |
Compared with TPS61088RHLR and MAX77818EWJ+T, the ISL91132IIQZ-T uniquely combines 1.8A boost capability, integrated 38mΩ bypass FET, and ultra-compact WLCSP in a single-rail solution-making it optimal for space-constrained, battery-powered 5V applications where simplicity and minimal BOM count are critical.
Availability
ISL91132IIQZ-T is available at Aetrix Electronics and suitable for smartphone power management, USB OTG power sources, and RF power amplifier supplies requiring stable component supply with guaranteed long-term availability.
Supply support for ISL91132IIQZ-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC products for automotive, industrial, infrastructure, and IoT applications.
The ISL91132 product line targets high-efficiency, space-constrained mobile power conversion-specifically addressing the need for integrated boost + bypass regulation in single-cell Li-ion systems with aggressive size and quiescent current requirements.
FAQ
What output voltage options does the ISL91132IIQZ-T support?
The ISL91132IIQZ-T supports two fixed output voltages: 5.0V (VSEL = LOW) and 5.2V (VSEL = HIGH). This dual-setpoint design allows system designers to compensate for load transient droop by selecting the higher voltage when tighter regulation under dynamic conditions is required. Both options are factory-configured and do not require external feedback resistors.
How does the ISL91132IIQZ-T enter and exit Forced Bypass mode?
The ISL91132IIQZ-T enters Forced Bypass mode when the BYPS pin is pulled LOW. In this state, the boost controller shuts down, the 38mΩ bypass FET (Q3) activates, and the output is directly connected to VIN. If VOUT exceeds VIN at entry, the IC first discharges VOUT to VIN level using an internal discharge circuit before enabling bypass-preventing reverse current flow into the battery. Exit occurs when BYPS is released HIGH.
What is the purpose of the slow-ramp soft-start in the ISL91132IIQZ-T?
The ISL91132IIQZ-T uses a slow-ramp soft-start (350mA/700mA linear current sources, 1200µs duration) specifically tuned for its 5.0/5.2V output variants. This prevents inrush current into large output capacitors (e.g., 22µF) during power-up, avoiding input voltage sag and potential fault triggering. It ensures reliable startup even with high-capacitance loads common in USB OTG and RF PA applications.
Does the ISL91132IIQZ-T provide overcurrent protection in both boost and bypass modes?
Yes-the ISL91132IIQZ-T provides overcurrent protection in both modes. In boost mode, it detects 16 consecutive valley-current limit violations and enters hiccup mode (20ms shutdown + restart). In Forced Bypass mode, it monitors VIN–VOUT differential and triggers overcurrent protection if VOCP_BYP exceeds 150mV (indicating excessive load current through the 38mΩ FET), ensuring safe operation across both regulation domains.
What thermal protection features are implemented in the ISL91132IIQZ-T?
The ISL91132IIQZ-T includes dual thermal protection: a thermal warning flag activates at +120°C (deasserting the PG signal to alert the host), and full thermal shutdown engages at +150°C (disabling all switching and bypass functions). After shutdown, the device remains off until die temperature falls to +120°C, then resumes normal operation-providing robust reliability in thermally dense mobile designs.
ISL91132IIQZ-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)
ISL91132IIQZ-T FAQ
1.How can I place an order for ISL91132IIQZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91132IIQZ-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 ISL91132IIQZ-T reliable?
The price and inventory of ISL91132IIQZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91132IIQZ-T is usually 5 days.
3.What payment methods are accepted for ISL91132IIQZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91132IIQZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91132IIQZ-T?
ISL91132IIQZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91132IIQZ-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 ISL91132IIQZ-T?
For technical support, including ISL91132IIQZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91132IIQZ-T requirements.
6.How does Aetrix verify that ISL91132IIQZ-T is sourced from the original manufacturer or authorized distributors?
All ISL91132IIQZ-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 ISL91132IIQZ-T meets industry standards.
7.What is the process for return or replacement of ISL91132IIQZ-T?
All ISL91132IIQZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL91132IIQZ-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 ISL91132IIQZ-T part is unused and in its original packaging.
Return procedure for ISL91132IIQZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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