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Renesas ISL9120IIAZ-TR5696
- Part No.:
- ISL9120IIAZ-TR5696
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
ISL9120IIAZ-TR5696.pdf
- Description:
- IC REG BUCK BOOST
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Product details
Overview
ISL9120IIAZ-TR5696 from Renesas Electronics is an adjustable-output buck-boost switching regulator IC designed for low-power portable systems. It accepts 1.8V–5.5V input and delivers up to 800mA output current with automatic buck/boost mode transition, forced bypass functionality (≤3.5µA quiescent current), and 98% peak efficiency. It operates in smartphones, wearables, and battery-powered IoT sensors where input voltage may dip below or rise above the regulated output.
For engineers reviewing the ISL9120IIAZ-TR5696 datasheet, ISL9120IIAZ-TR5696 pinout, ISL9120IIAZ-TR5696 application, or ISL9120IIAZ-TR5696 equivalent, key selection criteria include its 1.41mm×1.41mm WLCSP package, adjustable 1.0V–5.2V output via resistor divider, adaptive PFM control, thermal shutdown at +150°C, and dual ground (GND/PGND) separation for noise-sensitive analog circuits.
Technical Context
The ISL9120IIAZ-TR5696 implements a four-switch buck-boost topology with integrated P-channel and N-channel MOSFETs (rDSON = 50mΩ each), enabling seamless transitions between buck, boost, and automatic bypass modes without output disturbance. Its adaptive multilevel current limit scheme dynamically adjusts peak inductor current from 350mA to 2A across 32 levels based on load demand.
It features separate analog (GND) and power (PGND) ground pins, a dedicated BYP pin for forced bypass mode activation, and soft-discharge (110Ω internal resistor) upon EN deactivation. The device uses a 0.8V internal reference and supports external feedback via FB pin for precise output programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, Li-poly, or multi-cell alkaline/battery stacks without pre-regulation. |
| Output Voltage Range | 1.0V to 5.2V - programmable via external resistor divider; fixed 3.3V version uses VOUT-to-FB short. |
| Max Output Current | 800mA at VIN=2.5V, VOUT=3.3V - sufficient for PMIC subsystems, RF front-ends, or sensor hubs. |
| Quiescent Current | 41µA in regulation mode; ≤3.5µA in forced bypass - extends battery life during standby/sleep states. |
| Efficiency | Up to 98% - minimizes thermal dissipation in space-constrained WLCSP footprint. |
| Package | 1.41mm × 1.41mm 9-bump WLCSP - enables ultra-compact PCB layouts for thin mobile devices. |
| Thermal Shutdown | +150°C with +35°C hysteresis - protects against sustained overload or poor heatsinking. |
Pinout & Package
ISL9120IIAZ-TR5696 uses a RoHS-compliant 9-bump Wafer-Level Chip-Scale Package (WLCSP) with 0.4mm pitch, measuring 1.41mm × 1.41mm. The bottom-view pin layout follows a 3×3 array (pins A1–C3), with solder balls arranged in standard W3x3.9E footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX1 (A1) | Inductor input-side connection | Connects to one end of external 1µH inductor; carries high-frequency switching current in both buck and boost phases. |
| VIN (A2) | Main power input | Accepts 1.8V–5.5V supply; requires 10µF ceramic capacitor to PGND for stability and EMI suppression. |
| BYP (A3) | Forced bypass mode enable | Logic HIGH activates direct VIN-to-VOUT path (no regulation); logic LOW enables normal buck-boost operation. |
| LX2 (C1) | Inductor output-side connection | Connects to second end of inductor; completes buck-boost power loop with LX1 and internal switches. |
| VOUT (C2) | Regulated output | Delivers programmed output voltage; requires 22µF–47µF ceramic capacitor to PGND for ripple reduction. |
| FB (C3) | Feedback input | Monitors output via external resistor divider; sets VOUT = 0.8V × (1 + R1/R2) for adjustable versions like ISL9120IIAZ-TR5696. |
| PGND (B1) | Power ground | Return path for high-current switching loops; must be low-inductance copper plane connected directly to C1/C2 grounds. |
| EN (B2) | Enable control | Active-HIGH logic input; drives LOW to disable regulator and activate soft-discharge (110Ω to GND). |
| GND (B3) | Analog ground | Reference for internal comparators and reference circuitry; isolated from PGND to prevent noise coupling into feedback path. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck/boost mode transition | Seamless switching without output voltage glitch when VIN crosses VOUT - eliminates need for external supervision or sequencing. |
| Forced bypass mode | Direct VIN-to-VOUT conduction with ≤3.5µA IQ - ideal for powering downstream LDOs in deep-sleep states. |
| Adaptive multilevel current limit | 32-step peak current adjustment (350mA–2A) - optimizes switching frequency and conduction losses across light-to-heavy loads. |
| Dual ground architecture | Separate GND (analog reference) and PGND (high-current return) - prevents ground bounce from corrupting feedback accuracy. |
| Integrated soft-start and soft-discharge | 1ms typical soft-start delay + ramped reference; 110Ω internal discharge resistor - controls inrush current and ensures safe output collapse on shutdown. |
Applications
| Smartphone Power Management | Wearable Health Sensor Hub |
|---|---|
Use Scenario: Regulating battery voltage (2.8V–4.2V) to stable 3.3V for baseband processor, display driver, and camera module. IC Role / Device Role / Timing Role: Primary buck-boost DC/DC converter providing system rail with dynamic input tracking and minimal board area. Use Value: Maintains regulation across full battery discharge curve while delivering 800mA peak current and consuming only 41µA at light load. | Use Scenario: Powering optical heart-rate sensor, accelerometer, and BLE radio in compact fitness tracker with coin-cell or thin-film battery. IC Role / Device Role / Timing Role: Adjustable-output regulator set to 1.8V for digital logic and 2.8V for analog front-end, enabled by single inductor. Use Value: Enables dual-rail generation from one IC; forced bypass mode cuts IQ to ≤3.5µA during motion-sensing sleep intervals. |
| Industrial Wireless Node | Portable Medical Diagnostic Device |
Use Scenario: Supplying 3.3V to LoRaWAN transceiver and microcontroller in battery-operated environmental monitor deployed outdoors. IC Role / Device Role / Timing Role: Standalone buck-boost regulator handling wide temperature range (−40°C to +85°C) and cold-start conditions down to 1.8V input. Use Value: Delivers full 800mA output even at 2.5V input; thermal shutdown (+150°C) prevents failure in sealed enclosures. | Use Scenario: Powering ECG analog front-end, ADC, and Bluetooth LE SoC in handheld patient monitor with rechargeable Li-poly battery. IC Role / Device Role / Timing Role: High-accuracy adjustable regulator (±3% VOUT tolerance) with low-noise dual-ground design for precision signal chain. Use Value: 0.8V reference and FB pin bias current (25nA) ensure stable 2.5V analog rail; soft-discharge prevents voltage hold-up during emergency shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS63020DSJR | Fixed 3.3V output only; no adjustable version; 96% max efficiency; 2.5V–5.5V input; 1.2mm × 1.6mm QFN-10 package. | Not suitable for designs requiring programmable output voltage; larger footprint than ISL9120IIAZ-TR5696's WLCSP. | Select if fixed 3.3V output suffices and QFN assembly is preferred over WLCSP reflow. |
| Analog Devices ADP5070ACPZ-R7 | Requires external compensation; higher IQ (120µA); 2.85V–15V input; 16-lead LFCSP; supports negative output generation. | Targeted at precision bipolar supplies, not ultra-low-IQ portable applications; lacks automatic bypass mode. | Select only for dual-rail (±VOUT) designs where ISL9120IIAZ-TR5696's single positive output is insufficient. |
Compared with TPS63020DSJR and ADP5070ACPZ-R7, ISL9120IIAZ-TR5696 uniquely combines adjustable output, sub-4µA bypass IQ, 1.41mm² WLCSP size, and automatic buck/boost transition - making it optimal for space- and battery-life-constrained portable electronics.
Availability
ISL9120IIAZ-TR5696 is available at Aetrix Electronics and suitable for smartphone power management, wearable health sensor hubs, industrial wireless nodes, and portable medical diagnostic devices requiring stable component supply across extended production lifecycles.
Supply support for ISL9120IIAZ-TR5696 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 specializing in microcontrollers, analog power, and connectivity solutions for automotive, industrial, and consumer markets.
The ISL9120 product line was designed specifically for ultra-compact, high-efficiency power conversion in battery-powered portable electronics - emphasizing minimal external components, adaptive efficiency optimization, and robust thermal protection.
FAQ
What output voltage range does the ISL9120IIAZ-TR5696 support?
The ISL9120IIAZ-TR5696 supports an adjustable output voltage range of 1.0V to 5.2V, set using an external resistor divider connected to the FB pin. Its internal 0.8V reference enables precise programming per the equation VOUT = 0.8V × (1 + R1/R2). This flexibility allows the ISL9120IIAZ-TR5696 to replace multiple fixed-output regulators in multi-rail systems.
How does the forced bypass mode function in the ISL9120IIAZ-TR5696?
When the BYP pin is driven HIGH, the ISL9120IIAZ-TR5696 engages forced bypass mode, creating a direct conductive path from VIN to VOUT through internal MOSFETs and the external inductor. In this state, regulation is disabled and quiescent current drops to ≤3.5µA. The ISL9120IIAZ-TR5696 requires ≥800µs minimum dwell time in bypass mode and ≥1ms recovery before re-entry.
What is the recommended inductor value for the ISL9120IIAZ-TR5696?
Renesas specifies a 1µH shielded ferrite inductor with ≥2A saturation current and low DCR for the ISL9120IIAZ-TR5696. Recommended vendors include TDK (TFM201610GHM-1R0MTAA), Toko (DFE201610R-H-1R0M), and Cyntec (PIFE20161T-1R0MS). The inductor must be placed adjacent to the IC with short, low-inductance traces to LX1 and LX2 to minimize EMI.
Does the ISL9120IIAZ-TR5696 require separate input and output capacitors?
Yes - the ISL9120IIAZ-TR5696 requires a 10µF X5R ceramic input capacitor (0603, 10V rating) placed close to VIN and PGND, plus a 22µF or 47µF X5R ceramic output capacitor (0603, 6.3V or 10V rating) connected between VOUT and PGND. These values are validated for stability, ripple suppression, and transient response across the full operating range of the ISL9120IIAZ-TR5696.
What protection features are integrated into the ISL9120IIAZ-TR5696?
The ISL9120IIAZ-TR5696 integrates undervoltage lockout (UVLO, 1.725V rising threshold), overtemperature shutdown (+150°C with +35°C hysteresis), and soft-discharge (110Ω internal resistor activated on EN deassertion). It also includes reverse-current prevention and anti-shoot-through logic for gate drivers - all implemented without external components.
ISL9120IIAZ-TR5696 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ISL9120IIAZ-TR5696 FAQ
1.How can I place an order for ISL9120IIAZ-TR5696 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9120IIAZ-TR5696 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 ISL9120IIAZ-TR5696 reliable?
The price and inventory of ISL9120IIAZ-TR5696 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9120IIAZ-TR5696 is usually 5 days.
3.What payment methods are accepted for ISL9120IIAZ-TR5696?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9120IIAZ-TR5696 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9120IIAZ-TR5696?
ISL9120IIAZ-TR5696 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9120IIAZ-TR5696 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 ISL9120IIAZ-TR5696?
For technical support, including ISL9120IIAZ-TR5696 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9120IIAZ-TR5696 requirements.
6.How does Aetrix verify that ISL9120IIAZ-TR5696 is sourced from the original manufacturer or authorized distributors?
All ISL9120IIAZ-TR5696 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 ISL9120IIAZ-TR5696 meets industry standards.
7.What is the process for return or replacement of ISL9120IIAZ-TR5696?
All ISL9120IIAZ-TR5696 units undergo pre-shipment inspection (PSI). If there is an issue with ISL9120IIAZ-TR5696, 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 ISL9120IIAZ-TR5696 part is unused and in its original packaging.
Return procedure for ISL9120IIAZ-TR5696:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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