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Renesas ISL95338HRTZ-T7A
- Part No.:
- ISL95338HRTZ-T7A
- Manufacturer:
- Renesas
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95338HRTZ-T7A.pdf
- Description:
- IC REG BUCK BOOST ADJ 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,668
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Product details
Overview
ISL95338HRTZ-T7A from Renesas is a bidirectional buck-boost voltage regulator supporting forward (ADP→SYS) and reverse (SYS→ADP) power conversion, with 3.8V–24V input range, up to 20V output, 1MHz switching frequency, SMBus/I²C programmability, and integrated OCP/OVP/UVP/OTP protection. It enables USB-C PD power delivery in ultrabooks and power banks.
For engineers reviewing the ISL95338HRTZ-T7A datasheet, ISL95338HRTZ-T7A pinout, ISL95338HRTZ-T7A application, or ISL95338HRTZ-T7A equivalent, key selection criteria include bidirectional regulation capability, ±1% output voltage accuracy (HRTZ grade), 32-pin 4×4 TQFN package, R3™ modulator architecture for fast transient response, and dual-mode soft-start control via REF pin.
Technical Context
The ISL95338HRTZ-T7A implements Renesas' R3™ adaptive on-time modulation across both forward and reverse directions, enabling seamless transitions between buck, boost, and buck-boost modes without dead zones. Its dual error amplifiers (COMPF/COMPR) and independent current-sense paths (CSIP/CSIN for ADP side, CSOP/CSON for SYS side) support fully decoupled regulation loops.
Operation is controlled via dedicated enable pins (FRWEN analog, RVSEN digital) and configured through SMBus registers-including programmable input/output current limits, PROCHOT# thresholds, and voltage setpoints. Internal LDOs (VDD/VDDP) power gate drivers and logic, while active discharge functions safely manage residual energy in both directions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Bidirectional buck-boost with R3™ adaptive on-time control for CCM/DCM seamless transition |
| Input Voltage Range | 3.8V to 24V - no dead zone; supports USB PD, travel adapters, and wide-range DC sources |
| Output Voltage Range | Up to 20V - programmable via resistor divider on VOUTS (forward) or ADPS (reverse) |
| Switching Frequency | Up to 1MHz - enables compact magnetics and high-density power designs |
| Output Voltage Accuracy | ±1% (≥8V), ±1.5% (4–8V) - HRTZ-grade precision for stable system rail regulation |
| Protection Features | OCP, OVP, UVP, OTP - hardware-based with configurable thresholds via SMBus |
| Interface | SMBus/I²C-compatible - supports auto-increment addressing and real-time parameter reconfiguration |
Pinout & Package
ISL95338HRTZ-T7A is housed in a 32-lead, 4mm × 4mm, 0.5mm pitch TQFN package (RoHS-compliant, moisture sensitivity level 3). The exposed thermal pad (BOTTOM PAD) must be soldered to PCB ground for thermal management and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FRWEN | Forward mode enable input | Analog threshold (0.8V) - enables ADP→SYS regulation; critical for USB-C source negotiation |
| RVSEN | Reverse mode enable input | Digital logic-high signal - activates SYS→ADP power path for OTG or battery charging |
| CSIP / CSIN | ADP-side current sense inputs | Differential pair for input current monitoring; supports 20mΩ sense resistor and ±3% accuracy at 4A |
| CSOP / CSON | SYS-side current sense inputs | Differential pair for output current monitoring; supports 10mΩ sense resistor and ±3% accuracy at 6A |
| VOUTS / ADPS | Forward/reverse feedback nodes | Resistor-divider inputs for closed-loop voltage regulation - independently programmable per direction |
| UGATE1 / LGATE1 / PHASE1 / BOOT1 | Phase 1 high/low-side gate drive circuit | Controls Q1/Q2 MOSFETs for ADP-side power stage - requires external bootstrap capacitor |
| UGATE2 / LGATE2 / PHASE2 / BOOT2 | Phase 2 high/low-side gate drive circuit | Controls Q3/Q4 MOSFETs for SYS-side power stage - independent timing and dead-time control |
| SCL / SDA | SMBus interface I/O | Open-drain, 10kΩ pull-up required - enables dynamic configuration of current limits, voltages, and PROCHOT# behavior |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional regulation | Enables single-chip USB-C DRP (dual-role port) implementation without external direction control logic |
| Programmable soft-start | REF pin capacitor sets independent soft-start time for forward (VOUTS) and reverse (ADPS) modes |
| Bypass mode | Hardware-level pass-through operation in both directions - reduces conduction loss during light-load or fault conditions |
| Bidirectional internal discharge | Active discharge of ADP and VOUT rails (6.5mA/8.5mA at 5V) - meets USB-C safety requirements for rapid voltage decay |
| R3™ modulator | Delivers >90% efficiency at light load and <10µs transient response - essential for dynamic CPU/GPU power states |
| LDO outputs (VDD/VDDP) | Integrated bias supplies eliminate need for external regulators - simplifies BOM and layout |
Applications
| USB-C Power Delivery (PD) Source/Sink | Ultrabook Adaptive Charging System |
|---|---|
Use Scenario: Laptop negotiates power role with dock or charger using USB-C PD protocol, dynamically switching between sourcing 20V/5A and sinking 15V/3A. IC Role / Device Role / Timing Role: ISL95338HRTZ-T7A acts as the bidirectional power conversion core, managing voltage regulation, current limiting, and thermal protection in real time. Use Value: Eliminates need for separate buck and boost controllers, reducing solution size by 40% and enabling compliance with USB PD 3.0 EPR timing constraints. |
Use Scenario: Ultrabook uses internal battery to power USB-C peripherals (e.g., monitor, SSD) while simultaneously charging from AC adapter. IC Role / Device Role / Timing Role: ISL95338HRTZ-T7A regulates bidirectional energy flow between battery (SYS) and adapter (ADP), with independent loop control per direction. Use Value: Achieves ±1% output accuracy across 4–20V range and supports seamless mode transitions during load transients up to 10A/µs. |
| Portable Power Bank with Dual-Port PD | Tablet Fast-Charge Negotiation Engine |
Use Scenario: Power bank delivers 20V/3A to laptop while accepting 9V/3A input from wall adapter - all through single USB-C port. IC Role / Device Role / Timing Role: ISL95338HRTZ-T7A serves as the primary voltage regulator and protection controller, interfacing with MCU via SMBus for policy enforcement. Use Value: Enables true dual-role operation with hardware-based OCP/OVP/OTP - eliminates firmware dependency for critical safety functions. |
Use Scenario: Tablet negotiates variable voltage (5V/9V/15V/20V) with charger and adapts system rail accordingly during video playback or gaming. IC Role / Device Role / Timing Role: ISL95338HRTZ-T7A performs forward-mode regulation with programmable soft-start and fast transient response to CPU DVFS events. Use Value: Delivers <10µs recovery from 80% load step with <1% droop - maintains SoC stability during burst workloads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP8859GQ-Z | Single-direction (forward-only) buck-boost; no reverse mode enable or SYS-side current sensing | Requires external reverse-path circuitry for OTG; lacks SMBus register access for dynamic reconfiguration | Choose when only ADP→SYS conversion is needed and cost is prioritized over feature set |
| TPS65988DHAR | USB-C PD controller with integrated Type-C port logic; includes ISL95338HRTZ-T7A-equivalent power stage but adds PHY, BMC, and policy engine | Higher integration for full PD 3.0 compliance; larger footprint and higher BOM cost | Choose when full USB-C DRP stack (including CC logic and firmware) is required alongside power conversion |
Compared with MP8859GQ-Z and TPS65988DHAR, the ISL95338HRTZ-T7A uniquely provides standalone, SMBus-configurable bidirectional regulation in a minimal 4×4 mm footprint - ideal for space-constrained embedded systems requiring flexible power routing without full PD protocol stack overhead.
Availability
ISL95338HRTZ-T7A is available at Aetrix Electronics and suitable for USB-C PD implementations, ultrabook adaptive charging systems, and portable power bank designs requiring stable component supply, RoHS-compliant packaging, and automotive-grade temperature range (-10°C to +100°C).
Supply support for ISL95338HRTZ-T7A 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 solutions for automotive, industrial, and consumer applications.
The ISL95338HRTZ-T7A belongs to Renesas' Power Management IC portfolio, designed specifically for high-efficiency, bidirectional USB-C PD power conversion in mobile computing and portable electronics.
FAQ
What is the operating temperature range for the ISL95338HRTZ-T7A?
The ISL95338HRTZ-T7A is rated for ambient operation from -10°C to +100°C, matching the HRTZ grade specification. Junction temperature must remain below +125°C under all conditions, and thermal design must account for the 32-lead TQFN package's θJA of 37°C/W. The device includes hardware-based over-temperature protection that triggers at 140–160°C.
Does the ISL95338HRTZ-T7A support USB-C Power Delivery communication?
No - the ISL95338HRTZ-T7A handles only the analog power conversion and protection functions. It does not implement USB-C PD communication (BMC, CC logic, or policy engine). However, it interfaces seamlessly with USB-C PD controllers (e.g., TPS65988) via SMBus for voltage/current programming and status reporting.
How is bidirectional operation enabled and controlled on the ISL95338HRTZ-T7A?
Bidirectional operation is controlled by two dedicated pins: FRWEN (analog forward enable, active >0.8V) and RVSEN (digital reverse enable, active high). Both modes can be active simultaneously only in bypass mode; normal operation requires exclusive enable. Directional current sensing (CSIP/CSIN vs. CSOP/CSON) and independent feedback (VOUTS/ADPS) ensure accurate regulation in each direction.
What is the purpose of the REF pin on the ISL95338HRTZ-T7A?
On the ISL95338HRTZ-T7A, the REF pin sets soft-start timing for both forward and reverse modes. A ceramic capacitor from REF to GND determines the ramp rate: larger capacitance yields slower startup. In forward mode, it controls VOUTS rise; in reverse mode, it controls ADPS rise. This eliminates need for external timers or firmware-controlled delays.
Can the ISL95338HRTZ-T7A operate without SMBus configuration?
Yes - the ISL95338HRTZ-T7A has default hardware-set parameters: forward output voltage determined by PROG-to-GND resistor, fixed current limits, and factory-programmed protection thresholds. SMBus is optional for dynamic reconfiguration (e.g., changing voltage during runtime, adjusting PROCHOT# thresholds, or reading telemetry). All safety-critical protections remain active without SMBus connection.
ISL95338HRTZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost, Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 4V
- Voltage - Output (Max):
- 20V
- Current - Output:
- -
- Frequency - Switching:
- Up to 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -10°C ~ 100°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL95338HRTZ-T7A FAQ
1.How can I place an order for ISL95338HRTZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95338HRTZ-T7A 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 ISL95338HRTZ-T7A reliable?
The price and inventory of ISL95338HRTZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95338HRTZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL95338HRTZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95338HRTZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95338HRTZ-T7A?
ISL95338HRTZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95338HRTZ-T7A 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 ISL95338HRTZ-T7A?
For technical support, including ISL95338HRTZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95338HRTZ-T7A requirements.
6.How does Aetrix verify that ISL95338HRTZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL95338HRTZ-T7A 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 ISL95338HRTZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL95338HRTZ-T7A?
All ISL95338HRTZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL95338HRTZ-T7A, 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 ISL95338HRTZ-T7A part is unused and in its original packaging.
Return procedure for ISL95338HRTZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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