My Inquiry
My Account
Renesas ISL85415FRZ-T7A
- Part No.:
- ISL85415FRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 12-VFDFN Exposed Pad
- Datasheet:
-
ISL85415FRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 500MA 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL85415FRZ-T7A from Renesas Electronics is a wide-input synchronous buck regulator delivering up to 500mA continuous output current, operating from 3V to 36V input, with integrated high-side and low-side NMOS FETs, fixed 500kHz or adjustable 300kHz–2MHz switching frequency, and PFM/PWM light-load mode selection - used in industrial control power rails and battery-powered instrumentation.
For engineers reviewing the ISL85415FRZ-T7A datasheet, ISL85415FRZ-T7A pinout, ISL85415FRZ-T7A application, or ISL85415FRZ-T7A equivalent, key selection criteria include input voltage range (3–36V), internal compensation capability, power-good signaling, soft-start programmability, and thermal shutdown at +150°C.
Technical Context
The ISL85415FRZ-T7A implements peak-current-mode control with an internal 0.6V feedback reference and transconductance error amplifier (gm = 230µA/V with external compensation). It integrates both power switches and supports either internal fixed-frequency operation or external resistor-programmable switching frequency via the FS pin.
Its protection suite includes overcurrent limiting (0.9A typical peak), negative current limit (−0.4A), thermal shutdown (+150°C with 20°C hysteresis), boot undervoltage lockout, and power-good monitoring with ±6% regulation window referenced to FB voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 36V DC - enables direct connection to 12V/24V industrial buses or multi-cell Li-ion batteries without pre-regulation. |
| Output Current | 500mA continuous - sufficient for powering microcontrollers, sensors, and communication ICs in compact embedded systems. |
| Switching Frequency | Default 500kHz (FS tied to VCC); adjustable 300kHz–2MHz via resistor - allows optimization of efficiency vs. size trade-offs in inductor/capacitor selection. |
| Feedback Reference | 0.600V ±1% - sets output voltage via external resistor divider; enables precise 1.8V, 3.3V, or 5V rail generation. |
| Power-Good Threshold | ±6% window around regulated output - provides reliable system reset and sequencing control for downstream logic. |
| Operating Temperature | −40°C to +125°C junction - validated for under-hood automotive modules and industrial PLCs with minimal derating. |
| Quiescent Current | 80µA at light load - extends battery life in always-on portable instrumentation applications. |
Pinout & Package
ISL85415FRZ-T7A is housed in a RoHS-compliant, thermally enhanced 12-lead 4mm × 3mm DFN package with exposed thermal pad (Pb-free, MSL3 per J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SS | Soft-start timing control | Capacitor-to-ground sets ramp time; tie to VCC for internal 2ms soft-start - prevents inrush current during power-up. |
| SYNC | Mode selection & synchronization input | Logic level selects PFM (low) or forced PWM (high); accepts external clock up to 2MHz - enables noise-sensitive or synchronized multi-rail designs. |
| BOOT | Bootstrap supply for high-side gate driver | Connects 100nF capacitor to PHASE - sustains gate drive voltage above VIN for NMOS high-side switch conduction. |
| VIN | Main power input | Supplies power stage and internal LDO; requires ≥4.7µF ceramic decoupling close to pin - ensures stable bias and transient response. |
| PHASE | Switch node | Drives external inductor; connects internal high/low-side FETs - critical for layout; must minimize loop area to reduce EMI. |
| PGND | Power ground return | Low-impedance path for inductor current and switching currents - must connect directly to PCB ground plane with multiple vias. |
| EN | Enable control | Active-high; >1V enables regulator - supports system-level power sequencing and standby mode control. |
| PG | Open-drain power-good indicator | Pulled low during soft-start or out-of-regulation; internal 5MΩ pull-up - signals MCU when output is stable and within tolerance. |
| VCC | Internal 5V LDO output | Provides bias for control circuitry; decouple with 1µF ceramic to PGND - stabilizes internal references and gate drivers. |
| FB | Feedback input | Inverting input of error amplifier; monitors output via resistor divider - determines regulated output voltage (VOUT = 0.6V × (1 + R2/R1)). |
| COMP | Error amplifier output | Connect to VCC for internal compensation; RC network to GND enables external loop tuning - simplifies stability design across loads. |
| FS | Frequency selection | Tie to VCC for 500kHz; resistor to GND sets 300kHz–2MHz - adjusts switching frequency to avoid noise bands or optimize efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Buck Architecture | Integrated high-side (600mΩ) and low-side (330mΩ) NMOS FETs eliminate external diode losses - achieves >90% efficiency at mid-load across wide VIN range. |
| Selectable Light-Load Mode | PFM mode reduces quiescent current to 80µA; forced PWM maintains fixed frequency - selectable via SYNC pin for noise-sensitive or deterministic timing applications. |
| Internal or External Compensation | Single-pin COMP configuration eliminates need for external op-amp or complex compensation network - accelerates design cycle and reduces BOM count. |
| Robust Protection Suite | Includes overcurrent (0.9A), negative current limit (−0.4A), thermal shutdown (+150°C), and boot UVLO - enables reliable operation in unregulated or harsh environments without external supervision. |
| Power-Good and Enable Functions | Dedicated open-drain PG and active-high EN pins support safe power sequencing and fault reporting - essential for FPGA, MCU, and DSP supply management. |
Applications
| Industrial Control Power Supply | Portable Medical Instrumentation |
|---|---|
Use Scenario: Providing isolated 3.3V/5V rails for PLC I/O modules and sensor signal conditioning circuits in factory automation cabinets. IC Role / Device Role / Timing Role: Primary DC-DC converter stepping down 24V bus to logic-level supplies with tight regulation and fast transient response. Use Value: Wide 3–36V input accommodates brownout and surge conditions; −40°C to +125°C rating ensures reliability in uncooled enclosures. | Use Scenario: Powering low-power ADCs, Bluetooth LE radios, and microcontrollers in handheld diagnostic devices running on dual-cell Li-ion batteries. IC Role / Device Role / Timing Role: Efficient step-down regulator delivering stable 1.8V/3.3V outputs with ultra-low quiescent current during sleep modes. Use Value: 80µA IQ in PFM mode extends battery runtime; small 4×3mm DFN footprint saves board space in compact form factors. |
| Distributed Data Acquisition Node | Cloud Infrastructure Management Controller |
Use Scenario: Generating local 5V and 3.3V rails for remote analog front-end (AFE) and SPI interface ICs in environmental monitoring sensor nodes. IC Role / Device Role / Timing Role: Standalone buck regulator with programmable soft-start and power-good signaling for autonomous startup and fault detection. Use Value: Internal compensation and integrated FETs reduce external component count to <10 parts - simplifying certification and field service. | Use Scenario: Supplying auxiliary 3.3V rails for baseboard management controllers (BMCs), fan controllers, and LED indicators in server rack power distribution units. IC Role / Device Role / Timing Role: Secondary regulator fed from intermediate 12V bus, providing clean, sequenced power with thermal monitoring. Use Value: Thermal shutdown with 20°C hysteresis prevents latch-up during airflow blockage; PG signal enables BMC health reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 3.3–36V input, 600mA, fixed 2MHz switching, no PFM mode, smaller 8-pin SOIC package | Lacks light-load efficiency optimization and power-good output; suited for space-constrained but noise-tolerant designs | Choose when fixed high-frequency operation is preferred and thermal headroom exceeds 125°C ambient. |
| TPS54202DRCT | 4.5–28V input, 2A, 500kHz default, integrated soft-start, no internal compensation option | Higher current capability but narrower VIN range; requires external compensation components | Choose when >500mA load margin is required and board area permits additional RC network for loop stability. |
Compared with MP2451DT-LF-Z and TPS54202DRCT, the ISL85415FRZ-T7A uniquely combines wide 3–36V input, internal compensation, PFM/PWM mode flexibility, and power-good signaling in a compact DFN - making it optimal for industrial and battery-powered systems requiring robustness, simplicity, and design confidence.
Availability
ISL85415FRZ-T7A is available at Aetrix Electronics and suitable for industrial control, portable medical instrumentation, and distributed data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL85415FRZ-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, infrastructure, and IoT markets.
The ISL85415FRZ-T7A belongs to Renesas' high-voltage synchronous buck regulator product line, designed specifically for rugged, low-BOM-count DC-DC conversion in industrial and battery-powered applications where input voltage variation and thermal stress are common.
FAQ
What is the maximum input voltage rating for the ISL85415FRZ-T7A?
The ISL85415FRZ-T7A has an absolute maximum input voltage rating of +42V, with recommended operation limited to 3V to 36V. Exceeding 36V continuously may trigger overvoltage protection or degrade long-term reliability. The device is rated for 36V nominal operation, supporting 24V industrial buses and 32V battery systems with margin.
Does the ISL85415FRZ-T7A support external frequency synchronization?
Yes, the ISL85415FRZ-T7A supports external synchronization via the SYNC pin, accepting positive-edge-triggered clock signals from 300kHz to 2MHz. When driven by an external source, the internal oscillator is disabled and switching follows the external clock - enabling noise reduction in sensitive RF or audio subsystems.
How is soft-start configured on the ISL85415FRZ-T7A?
Soft-start on the ISL85415FRZ-T7A is configured using the SS pin: connecting a capacitor from SS to GND sets the ramp time (ISS = 2µA charges the cap), while tying SS to VCC activates an internal 2ms soft-start. This prevents inrush current and ensures controlled output voltage rise during power-up sequences.
Can the ISL85415FRZ-T7A operate with internal compensation only?
Yes, the ISL85415FRZ-T7A supports fully internal compensation when the COMP pin is tied directly to VCC. This eliminates external RC components and simplifies design for standard 3.3V or 5V outputs - ideal for rapid prototyping and cost-sensitive production where loop stability across temperature and load is guaranteed by the internal network.
What protection features does the ISL85415FRZ-T7A include?
The ISL85415FRZ-T7A includes overcurrent protection (0.9A peak limit), negative current limit (−0.4A), thermal shutdown (+150°C with 20°C hysteresis), boot undervoltage lockout, and power-good monitoring. These features ensure safe operation during short circuits, reverse current events, overheating, and startup faults - reducing need for external supervision circuitry.
ISL85415FRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 12-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 34V
- Current - Output:
- 500mA
- Frequency - Switching:
- 500kHz, 300kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x3)
ISL85415FRZ-T7A FAQ
1.How can I place an order for ISL85415FRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL85415FRZ-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 ISL85415FRZ-T7A reliable?
The price and inventory of ISL85415FRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL85415FRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL85415FRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL85415FRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL85415FRZ-T7A?
ISL85415FRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL85415FRZ-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 ISL85415FRZ-T7A?
For technical support, including ISL85415FRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL85415FRZ-T7A requirements.
6.How does Aetrix verify that ISL85415FRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL85415FRZ-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 ISL85415FRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL85415FRZ-T7A?
All ISL85415FRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL85415FRZ-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 ISL85415FRZ-T7A part is unused and in its original packaging.
Return procedure for ISL85415FRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL85415FRZ-T7A 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…
