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Renesas ISL91107IIJZ-TR5654
- Part No.:
- ISL91107IIJZ-TR5654
- Manufacturer:
- Renesas
- Package:
- 15-UFBGA, WLCSP
- Datasheet:
-
ISL91107IIJZ-TR5654.pdf
- Description:
- IC REG BUCK BST ADJ/1V 15WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
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Product details
Overview
ISL91107IIJZ-TR5654 from Renesas Electronics 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. It operates in smartphones and tablet PCs where input voltage may dip below or rise above the regulated output.
For engineers reviewing the ISL91107IIJZ-TR5654 datasheet, ISL91107IIJZ-TR5654 pinout, ISL91107IIJZ-TR5654 application, or ISL91107IIJZ-TR5654 equivalent, key selection criteria include seamless buck/boost mode transition, WLCSP package thermal performance, light-load PFM efficiency, and integrated overcurrent/thermal protection.
Technical Context
The ISL91107IIJZ-TR5654 implements automatic, disturbance-free transitions between buck and boost modes using internal PWM control logic and dual high-side/low-side gate drivers. Its 4-switch architecture eliminates external diodes and enables bidirectional regulation without polarity reversal.
It features separate PVIN (power input) and VIN (bias supply) rails, dedicated PGND/GND pins for noise isolation, and MODE pin-selectable forced PWM or auto PFM operation - enabling optimization of efficiency across 0–2A load range while maintaining ±2% output voltage accuracy in PWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-poly, and USB-powered systems without pre-regulation. |
| Output Current | Up to 2A at VOUT = 3.3V, PVIN = 2.8V - sufficient for RF power amplifiers and application processors. |
| Switching Frequency | 2.5MHz (±10%) - enables use of compact 1µH inductors and minimizes EMI filtering requirements. |
| Quiescent Current | 45µA in PFM mode - extends battery runtime in always-on subsystems like PMIC rails or sensor hubs. |
| Output Voltage Accuracy | ±2% in PWM mode - ensures stable core voltage for SoCs and memory interfaces under dynamic load. |
| Thermal Shutdown | 150°C with 30°C hysteresis - protects die during sustained overload or poor PCB heat sinking. |
| Package | 15-bump WLCSP, 2.15mm × 1.51mm - ultra-small footprint for space-constrained mobile PCBs. |
Pinout & Package
ISL91107IIJZ-TR5654 uses a 15-bump Wafer-Level Chip-Scale Package (WLCSP) with 0.4mm pitch, RoHS-compliant SnAgCuNi solder balls, and MSL3 moisture sensitivity rating per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | PVIN | High-current power input (1.8V–5.5V); connects to 22µF input capacitor and PGND loop. |
| A3 | VIN | Bias supply rail for internal reference generation; must be within same voltage range as PVIN. |
| B1, B2 | LX1 | Inductor connection (input side); carries high di/dt switching current in both buck and boost phases. |
| B3 | EN | Active-high enable; <0.4V disables device and activates 35Ω soft-discharge path from VOUT to GND. |
| C1, C2 | PGND | Power ground return for LX1/LX2 switching currents; must be low-inductance plane adjacent to PVIN/VOUT caps. |
| C3 | MODE | Selects operation mode: HIGH = auto PFM/PWM, LOW = forced PWM (constant frequency, no frequency foldback). |
| D1, D2 | LX2 | Inductor connection (output side); completes buck-boost power path with LX1 and internal FETs. |
| D3 | GND | Analog ground reference for FB, error amp, and internal references; isolated from PGND to prevent noise coupling. |
| E1, E2 | VOUT | Regulated output; requires 2×22µF X5R ceramic capacitors to maintain stability and transient response. |
| E3 | FB | Feedback input for adjustable versions; connected to resistor divider (0.8V reference) - not used in fixed 3.3V variant. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Buck/Boost Transition | Zero-output-disturbance mode switching maintains ±15mV output deviation during VIN crossing VOUT. |
| Integrated 4-Switch Architecture | Eliminates external MOSFETs and diodes; reduces BOM count and layout area versus discrete solutions. |
| Soft-Start & Soft-Discharge | 1ms EN-to-ramp delay + 2–3ms VOUT ramp time; 35Ω internal discharge path prevents floating output on disable. |
| Hiccup-Mode Overcurrent Protection | Triggers after 16 consecutive peak-current-limit cycles; 40ms shutdown/restart cycle prevents thermal runaway. |
| Separate PGND/GND Pins | Prevents switching noise from corrupting feedback and reference signals - critical for ±2% regulation accuracy. |
Applications
| Smartphone Application | Tablet PC Power Rail |
|---|---|
Use Scenario: Regulating 3.3V for cellular baseband processor I/O and RF front-end bias under varying battery voltage (3.0V–4.4V). IC Role / Device Role / Timing Role: Primary buck-boost power stage managing dynamic load steps up to 2A while maintaining tight output regulation. Use Value: Seamless mode transition avoids brownouts during deep discharge; 45µA quiescent current extends standby time. | Use Scenario: Supplying 3.3V to display interface circuitry and touch controller in tablets with dual-cell or USB-C input sources. IC Role / Device Role / Timing Role: Standalone voltage regulator handling input swings from 2.8V (USB-PD sink) to 5.5V (adapter), eliminating need for pre- or post-regulators. Use Value: 2.5MHz operation allows 1µH inductor and small 0603 capacitors, reducing solution size by >30% vs lower-frequency alternatives. |
| 2G/3G/4G Power Amplifier | Wireless Communication Module |
Use Scenario: Delivering clean, ripple-free 3.3V to LTE power amplifier stages subject to burst-mode current demands (0–1.8A). IC Role / Device Role / Timing Role: High-efficiency DC/DC converter with fast load-transient response (<100µs settling) and hiccup-mode fault recovery. Use Value: 96% peak efficiency at 1A reduces thermal load on PA module; soft-start prevents inrush-induced supply droop. | Use Scenario: Powering Wi-Fi/BT combo modules in portable IoT devices with single-cell Li-ion batteries (2.7V–4.2V). IC Role / Device Role / Timing Role: Compact, integrated regulator supporting wide VIN range and low-noise analog ground for sensitive RF receivers. Use Value: WLCSP package enables placement directly under module substrate; separate GND/PGND pins suppress RF coupling into analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2918DJ-LF-Z | 4-switch architecture, 2A output, but 1.2MHz max switching frequency and larger QFN-16 package (3mm×3mm). | Higher board area requirement; less suitable for ultra-thin mobile designs. | Choose when lower EMI priority outweighs size constraints and thermal performance is less critical. |
| TPS63020DSJR | 2A buck-boost, 2.5MHz capable, but 450µA typical quiescent current in PFM mode - 10× higher than ISL91107IIJZ-TR5654. | Reduced battery life in always-on sensor or modem standby states. | Choose only if TI's ecosystem support or specific feature set (e.g., I²C programmability) is required. |
Compared with MP2918DJ-LF-Z and TPS63020DSJR, the ISL91107IIJZ-TR5654 delivers superior light-load efficiency and smallest footprint - making it optimal for space- and battery-limited mobile platforms where seamless mode transition and thermal management are critical.
Availability
ISL91107IIJZ-TR5654 is available at Aetrix Electronics and suitable for smartphone power management, tablet PC voltage rails, and wireless communication module design requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for ISL91107IIJZ-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 is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and consumer markets.
The ISL91107 product line targets high-efficiency, ultra-compact DC/DC conversion in battery-powered mobile devices - emphasizing seamless buck-boost operation, minimal external components, and robust protection for mission-critical power rails.
FAQ
What is the maximum continuous output current of the ISL91107IIJZ-TR5654?
The ISL91107IIJZ-TR5654 delivers up to 2A of continuous output current when PVIN = 2.8V and VOUT = 3.3V, as specified in the datasheet under recommended operating conditions. This rating assumes proper PCB layout with adequate copper area for thermal dissipation and use of a 1µH inductor rated for ≥3.8A saturation current. Derating applies at elevated ambient temperatures or with reduced airflow.
Does the ISL91107IIJZ-TR5654 require an external feedback resistor network?
No, the ISL91107IIJZ-TR5654 is the fixed 3.3V output version and does not require external feedback resistors. The FB pin is internally connected to the 0.8V reference and unused in this variant. Only the adjustable versions (e.g., ISL91107IIAZ) require R1/R2 to set VOUT between 1V and 5.2V. Using resistors with the ISL91107IIJZ-TR5654 will not alter the output voltage and may impair regulation.
How does the MODE pin affect operation of the ISL91107IIJZ-TR5654?
The MODE pin selects between two operating modes: logic HIGH enables automatic PFM/PWM transition for optimal light-load efficiency, while logic LOW forces continuous PWM operation regardless of load. In forced PWM mode, switching frequency remains fixed at 2.5MHz, eliminating frequency modulation artifacts - beneficial for noise-sensitive RF sections. The pin accepts standard CMOS logic levels (VIH ≥ 1.4V, VIL ≤ 0.4V).
What thermal protection features are implemented in the ISL91107IIJZ-TR5654?
The ISL91107IIJZ-TR5654 includes thermal shutdown that disables the regulator when junction temperature reaches +150°C (typical), with +30°C hysteresis. Upon cooling to +120°C, it automatically resumes operation via a full soft-start sequence. This behavior prevents permanent damage during sustained overload or inadequate heatsinking. Thermal resistance θJA is 78°C/W in free air on a high-thermal-conductivity test board.
Can the ISL91107IIJZ-TR5654 operate with input voltage equal to output voltage?
Yes, the ISL91107IIJZ-TR5654 is specifically designed to operate with input voltage near or equal to output voltage (e.g., VIN = 3.3V, VOUT = 3.3V). In this region, it rapidly alternates between buck and boost modes to maintain regulation, achieving excellent efficiency (>90%) and low output ripple. The seamless transition avoids output glitches or dropout - a key differentiator versus traditional buck-boost controllers requiring external mode-control logic.
ISL91107IIJZ-TR5654 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 15-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLCSP (1.51x2.15)
ISL91107IIJZ-TR5654 FAQ
1.How can I place an order for ISL91107IIJZ-TR5654 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91107IIJZ-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 ISL91107IIJZ-TR5654 reliable?
The price and inventory of ISL91107IIJZ-TR5654 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91107IIJZ-TR5654 is usually 5 days.
3.What payment methods are accepted for ISL91107IIJZ-TR5654?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91107IIJZ-TR5654 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91107IIJZ-TR5654?
ISL91107IIJZ-TR5654 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91107IIJZ-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 ISL91107IIJZ-TR5654?
For technical support, including ISL91107IIJZ-TR5654 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91107IIJZ-TR5654 requirements.
6.How does Aetrix verify that ISL91107IIJZ-TR5654 is sourced from the original manufacturer or authorized distributors?
All ISL91107IIJZ-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 ISL91107IIJZ-TR5654 meets industry standards.
7.What is the process for return or replacement of ISL91107IIJZ-TR5654?
All ISL91107IIJZ-TR5654 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91107IIJZ-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 ISL91107IIJZ-TR5654 part is unused and in its original packaging.
Return procedure for ISL91107IIJZ-TR5654:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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