My Inquiry
My Account
Renesas ISL95338IRTZ-TK
- Part No.:
- ISL95338IRTZ-TK
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
ISL95338IRTZ-TK.pdf
- Description:
- IC REG NOTEBOOK BI-DIR VR FOR P
- Quantity:
- Payment:
- Shipping:
Inventory:3,289
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL95338IRTZ-TK 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 regulated output, 1MHz switching frequency, SMBus/I²C programmability, and OCP/OVP/UVP/OTP protection-used in USB-C PD power delivery paths for tablets and ultrabooks.
For engineers reviewing the ISL95338IRTZ-TK datasheet, ISL95338IRTZ-TK pinout, ISL95338IRTZ-TK application, or ISL95338IRTZ-TK equivalent, key selection criteria include bidirectional current sensing accuracy (±3% at 6A), -40°C to +100°C operating temperature, 32-pin 4×4 TQFN package, R3™ modulator architecture for seamless DCM/CCM transitions, and dual-mode soft-start timing control via REF pin.
Technical Context
The ISL95338IRTZ-TK implements Renesas' R3™ adaptive on-time modulation with dual independent buck-boost modulators-one for forward (ADP→VOUTS) and one for reverse (VOUT→ADPS) operation-enabling automatic mode transitions (buck → buck-boost → boost) without dead zones across its full 3.8V–24V input range. Its gate drivers support high-side (UGATE1/UGATE2) and low-side (LGATE1/LGATE2) MOSFETs with programmable dead time (10–40ns) and ±2.8A sink capability.
SMBus/I²C interface provides real-time configuration of forward/reverse output voltages (via VOUTS/ADPS resistor dividers), input/output current limits (e.g., 4096mA system-side PROCHOT# threshold), and protection thresholds-including independent OVP/UVP hysteresis (0.55–0.6V) and overtemperature shutdown at 140–160°C-while maintaining compatibility with auto-increment addressing and standard SMBus timing (10–400kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Bidirectional buck-boost with independent forward/reverse modulators enabling USB OTG and fast-swap power routing |
| Input Voltage Range | 3.8V to 24V with no dead zone-supports wide-range adapters, USB PD sources, and travel ADPs |
| Output Voltage Range | Up to 20V programmable in both directions via external resistor dividers on VOUTS and ADPS pins |
| Switching Frequency | Up to 1MHz-enables compact LC filter design with reduced inductor size and improved transient response |
| Current Sensing Accuracy | ±3% at 6A forward (CSOP/CSON), ±5% at 2A reverse (CSIP/CSIN)-ensures precise OCP and PROCHOT# triggering |
| Operating Temperature | -40°C to +100°C-qualified for industrial and extended-temperature portable applications including power banks |
| Protection Features | OCP, OVP, UVP, OTP with hysteresis-prevents damage during fault conditions without requiring external circuitry |
Pinout & Package
Package: 32-lead 4mm × 4mm TQFN (RoHS-compliant, thermal pad exposed on bottom).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CSON / CSOP | VOUT current sense differential inputs | Measure forward output current with ±3% accuracy at 6A; require 0.1µF ceramic filter capacitor |
| CSIN / CSIP | ADP current sense differential inputs | Measure reverse input current; used for PROCHOT# generation and input current limiting |
| VOUTS / ADPS | Forward/reverse feedback voltage inputs | Set regulated output voltage via external resistor divider; enable independent voltage programming per direction |
| FRWEN / RVSEN | Forward and reverse mode enable inputs | Analog (FRWEN >0.8V) and digital (RVSEN logic high) controls-allow independent activation of each power path |
| SCL / SDA | SMBus/I²C interface | Enable real-time register access for voltage/current limit adjustment, status monitoring, and fault logging |
| PROCHOT# / FRWPG / RVSPG | Open-drain status outputs | Signal overcurrent (PROCHOT#), forward modulator active (FRWPG), or reverse modulator active (RVSPG) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional internal discharge | Automatically discharges ADP (6.5mA) and VOUT (8.5mA) rails during disable-eliminates need for external bleed resistors |
| R3™ modulator architecture | Delivers high light-load efficiency and seamless DCM/CCM transitions-critical for battery-powered devices with dynamic load profiles |
| Programmable soft-start | REF pin capacitor sets independent soft-start timing for forward (VOUTS) and reverse (ADPS) modes-prevents inrush current during power-up |
| Bypass mode in both directions | Enables direct conduction path when input/output voltages align-reduces conduction loss and improves efficiency at nominal conditions |
| LDO outputs (VDD/VDDP) | VDD (5V ±10%) and VDDP (gate driver supply) provide bias power-reduces external LDO count and simplifies power tree |
Applications
| USB-C Power Delivery Hub | Ultrabook Adaptive Charging |
|---|---|
Use Scenario: A multi-port USB-C dock dynamically routes power between host laptop (system side) and connected peripherals (adapter side) while maintaining stable 20V/3A delivery. IC Role / Device Role / Timing Role: ISL95338IRTZ-TK acts as bidirectional voltage regulator and power path manager-controlling forward (AC/DC adapter → laptop battery) and reverse (laptop battery → peripheral) power flow. Use Value: Enables single-chip USB PD 3.0 compliance with fast-swap capability, eliminating need for separate buck and boost controllers and reducing BOM count by 2 ICs. | Use Scenario: An ultrabook accepts variable-input power (12–20V) from diverse adapters and delivers regulated 12V/5A to internal battery charging circuitry while supporting reverse power for USB-C accessories. IC Role / Device Role / Timing Role: ISL95338IRTZ-TK serves as primary system power regulator-managing buck-boost transitions in <100ns during input voltage transients to prevent brownout. Use Value: Achieves >92% peak efficiency across 4V–24V input range and supports programmable PROCHOT# thresholds to coordinate thermal throttling with CPU power management. |
| Portable Power Bank | Tablet Fast-Charge Controller |
Use Scenario: A 27,000mAh power bank delivers 5–20V USB PD output to smartphones/laptops while accepting 9–15V input from car chargers or wall adapters. IC Role / Device Role / Timing Role: ISL95338IRTZ-TK functions as bidirectional DC-DC stage-regulating reverse-mode output (to device) and forward-mode input (from source) with independent current limiting. Use Value: Supports simultaneous charge/discharge with ±3% current accuracy and integrated OVP/UVP prevents cell overvoltage during fast-charge cycles. | Use Scenario: A 10-inch tablet uses USB-C for both charging and video output; the power architecture must sustain 15V/3A display power while drawing 9V/4A from charger without rail collapse. IC Role / Device Role / Timing Role: ISL95338IRTZ-TK operates as system-side buck-boost regulator-maintaining stable VOUTS under dynamic load steps (0→4A in 10µs) using R3™ adaptive modulation. Use Value: Delivers <100µs transient response and enables SMBus-based voltage margining for production test-reducing validation time by 30%. |
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 |
|---|---|---|---|
| MP8857GQ-Z | Single-direction only (forward only); no reverse mode or RVSEN control; 3.3–24V input; 5–20V output | Cannot support USB OTG or power bank reverse discharge; lacks SMBus programmability and dual-current-sense architecture | Select when only unidirectional adapter-to-system regulation is required and cost sensitivity outweighs feature flexibility |
| TPS65988DHAR | Integrated USB-C PD controller + bidirectional buck-boost; includes Type-C port logic, CC detection, and firmware stack | Requires full USB PD protocol stack integration; higher BOM cost and firmware development effort vs. standalone regulator | Select when native USB-C PD negotiation, policy engine, and port control are mandatory-not for simple voltage regulation tasks |
Compared with MP8857GQ-Z and TPS65988DHAR, the ISL95338IRTZ-TK uniquely balances standalone bidirectional regulation with SMBus configurability and industrial temperature range (-40°C to +100°C), making it optimal for embedded power banks and docking stations where firmware simplicity and thermal robustness are prioritized over full USB-C protocol handling.
Availability
ISL95338IRTZ-TK is available at Aetrix Electronics and suitable for USB-C PD hubs, ultrabook adaptive charging systems, and portable power banks requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL95338IRTZ-TK 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 computing markets.
The ISL95338IRTZ-TK belongs to Renesas' advanced power management portfolio targeting high-efficiency, bidirectional DC-DC conversion in mobile and portable electronics-designed specifically for USB-C PD 3.0-compliant devices needing flexible power routing without protocol overhead.
FAQ
What is the operating temperature range for the ISL95338IRTZ-TK?
The ISL95338IRTZ-TK is rated for an ambient operating temperature range of -40°C to +100°C, as specified in the ordering information table for the IRTZ grade. This extended range supports deployment in industrial-grade portable devices, automotive-adjacent accessories, and power banks exposed to elevated ambient conditions. The junction temperature limit remains +125°C, and overtemperature protection triggers between 140°C and 160°C.
Does the ISL95338IRTZ-TK support both forward and reverse current sensing?
Yes, the ISL95338IRTZ-TK supports independent current sensing in both directions: forward current is measured differentially across CSOP/CSON (±3% accuracy at 6A), while reverse (ADP-side) current is sensed across CSIP/CSIN (±5% at 2A). Both channels feed dedicated protection circuits-including programmable PROCHOT# thresholds-and enable real-time current limiting via SMBus registers without external amplifiers.
How is soft-start configured on the ISL95338IRTZ-TK?
Soft-start on the ISL95338IRTZ-TK is configured via an external capacitor connected from the REF pin to GND. The capacitor value sets the ramp time for both forward (VOUTS) and reverse (ADPS) output voltages. In forward mode, REF controls VOUTS soft-start; in reverse mode, it controls ADPS soft-start. No additional resistors or digital commands are required-the timing is analog-determined and fully independent per direction.
What package type and pin count does the ISL95338IRTZ-TK use?
The ISL95338IRTZ-TK uses a 32-lead 4mm × 4mm TQFN package (RoHS-compliant, part drawing L32.4x4D) with an exposed thermal pad on the bottom. This package supports high-power density designs and efficient heat dissipation-critical for bidirectional operation where both forward and reverse paths may conduct simultaneously. Thermal resistance is θJA = 37°C/W in free air.
Can the ISL95338IRTZ-TK operate without SMBus communication?
Yes, the ISL95338IRTZ-TK operates autonomously without SMBus: default settings (e.g., forward output voltage set by PROG-to-GND resistor, soft-start time set by REF capacitor) allow full functionality in pin-strapped mode. SMBus is optional for dynamic reconfiguration-such as changing current limits or voltage targets during runtime-but not required for basic bidirectional regulation, protection, or startup sequencing of the ISL95338IRTZ-TK.
ISL95338IRTZ-TK 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:
- -
ISL95338IRTZ-TK FAQ
1.How can I place an order for ISL95338IRTZ-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95338IRTZ-TK 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 ISL95338IRTZ-TK reliable?
The price and inventory of ISL95338IRTZ-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95338IRTZ-TK is usually 5 days.
3.What payment methods are accepted for ISL95338IRTZ-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95338IRTZ-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95338IRTZ-TK?
ISL95338IRTZ-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95338IRTZ-TK 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 ISL95338IRTZ-TK?
For technical support, including ISL95338IRTZ-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95338IRTZ-TK requirements.
6.How does Aetrix verify that ISL95338IRTZ-TK is sourced from the original manufacturer or authorized distributors?
All ISL95338IRTZ-TK 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 ISL95338IRTZ-TK meets industry standards.
7.What is the process for return or replacement of ISL95338IRTZ-TK?
All ISL95338IRTZ-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL95338IRTZ-TK, 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 ISL95338IRTZ-TK part is unused and in its original packaging.
Return procedure for ISL95338IRTZ-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL95338IRTZ-TK Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
