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Renesas ISL97701IRZ-T7
- Part No.:
- ISL97701IRZ-T7
- Manufacturer:
- Renesas
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL97701IRZ-T7.pdf
- Description:
- IC REG BOOST ADJ 1.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,640
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Product details
Overview
ISL97701IRZ-T7 from Intersil is a high-efficiency boost regulator IC with integrated 500mA boost FET, Schottky diode, and input disconnect FET. It operates from 2.3V–5.5V input to deliver up to 50mA at 18V output with 87% peak efficiency, and features active fault protection including overvoltage, overcurrent, and thermal shutdown. It is used in OLED display power supplies where low quiescent current and zero-output-current disable mode are critical.
For engineers reviewing the ISL97701IRZ-T7 datasheet, ISL97701IRZ-T7 pinout, ISL97701IRZ-T7 application, or ISL97701IRZ-T7 equivalent, key selection criteria include its 1MHz internal oscillator, synchronization input (NSYNC), soft-start sequence, integrated input disconnect switch, and 10-lead 3×3 DFN package with exposed thermal pad.
Technical Context
The ISL97701IRZ-T7 implements a constant-frequency PWM boost topology with fixed 1MHz internal oscillator or external synchronization from 600kHz to 1.4MHz. Its control architecture includes six-stage soft-start (Soft Inrush → VDDOUT Enable → Soft Boost 25/50/75 → Normal), built-in error amplifier, slope compensation, and pulse-skipping under light load.
Fault management is hardware-based and autonomous: overvoltage detection at VOUT (31–35V threshold), overcurrent monitoring on VDDOUT (800mA trip), and junction temperature shutdown (135°C off / 100°C on). The integrated input disconnect FET provides <3µA shutdown supply current and isolates the inductor from VDD during disable or fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion and Li-poly battery operation without pre-regulation. |
| Output Capability | 50mA at 18V - sufficient for biasing PMOLED/AMOLED display anodes or gate drivers. |
| Peak Efficiency | 87% - minimizes thermal stress and extends battery life in portable displays. |
| Switching Frequency | 1MHz (internal) or 600kHz–1.4MHz (synchronized) - enables compact magnetics and low EMI with predictable timing. |
| Feedback Reference | 1.15V ±30mV - sets precise output voltage via external resistor divider (e.g., 12.65V with 390kΩ/39kΩ). |
| Shutdown Current | 0.1µA typical - ensures zero battery drain when disabled, critical for always-on display standby modes. |
| Thermal Range | –40°C to +85°C ambient - qualified for industrial and handheld consumer environments. |
Pinout & Package
ISL97701IRZ-T7 is housed in a 10-lead 3×3 mm DFN package (MDP0047) with exposed thermal pad for enhanced heat dissipation. The package is RoHS-compliant, Pb-free, and rated MSL3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 GND | Power and signal ground reference | Common return path for LX switching current, feedback, and logic; connects directly to thermal pad for thermal conduction. |
| 2 VDDOUT | Protection switch output | Drives the integrated input disconnect FET; connects VDD to LX during normal operation and opens during fault/disable. |
| 3 VDD | Main supply input | Accepts 2.3V–5.5V battery or rail; powers internal circuitry and gate drivers. |
| 4 NSYNC | Synchronization input (falling-edge triggered) | Allows external clock alignment (600kHz–1.4MHz); eliminates beat frequencies in multi-rail systems. |
| 5 FB | Feedback input | Monitors output voltage via resistor divider; compares to 1.15V reference to regulate VOUT. |
| 6 NC | No connect | Internally unconnected; must remain floating - no PCB trace or component allowed. |
| 8 NEN | Enable input (active-low) | Logic-level shutdown control; <0.7V = enable, >1.8V = disable; includes internal 150–350kΩ pull-up. |
| 9 VOUT | Boost output voltage node | High-side output delivering regulated voltage (up to 28V); cathode of integrated Schottky diode. |
| 10 LX | Switch node | Connects to boost inductor; integrates 500mA FET and Schottky anode; switches at 1MHz with 60ns min on/off time. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky diode | 0.4–0.6V forward drop at 10mA eliminates external diode, reduces BOM count and board area. |
| Input disconnect switch | 0.2Ω ON-resistance and <3µA leakage isolate VDD from VOUT during disable/fault, enabling true zero-output-current mode. |
| Hardware fault protection | Dedicated comparators monitor VOUT (>31V), VDDOUT current (>800mA), and die temperature (>135°C) - no firmware required. |
| Six-stage soft-start | ~8.256ms controlled ramp (Soft Inrush → Normal) limits inrush current and prevents output overshoot during power-up. |
| Low-voltage logic interface | NEN/NSYNC/FB accept 0.7V logic low and 1.8V logic high - compatible with 1.8V/2.5V/3.3V microcontrollers without level shifters. |
Applications
| OLED Display Power | Adjustable Bias Supply |
|---|---|
Use Scenario: Powering anode voltage for passive-matrix OLED (PMOLED) panels in smartwatches and wearables. IC Role / Device Role / Timing Role: Boost regulator generating stable 12–18V from 3.6V Li-ion battery; manages soft-start and fault shutdown during screen transitions. Use Value: Integrated input disconnect ensures zero battery drain in screen-off mode, extending standby time beyond 7 days. | Use Scenario: Providing programmable high-voltage bias for sensor front-ends or MEMS actuators in portable medical devices. IC Role / Device Role / Timing Role: Adjustable boost converter with external resistor divider; synchronized switching avoids interference with sensitive analog acquisition windows. Use Value: 1.15V precision reference and ±2.5% output accuracy over –40°C to +85°C enable reliable calibration without trimming. |
| LED Backlight Driver Support | Low-Power Industrial Sensor Node |
Use Scenario: Supplying gate drive voltage for high-side LED current switches in ultra-thin LCD backlight modules. IC Role / Device Role / Timing Role: Fixed-frequency 1MHz boost stage feeding a linear current controller; NSYNC pin aligns switching edge to avoid EMI coupling into image data lines. Use Value: 87% efficiency at 30mA reduces thermal footprint, allowing placement near thermally sensitive optical components. | Use Scenario: Generating 15V bias for low-noise op-amps and ADC references in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Always-on boost regulator with <0.1µA shutdown current; enabled only during measurement bursts via microcontroller GPIO. Use Value: Sub-µA quiescent current in disable state extends 2xAA battery life to >2 years in intermittent-sampling applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRBR | Higher 28V max output but no integrated input disconnect switch; 500mA switch vs. ISL97701IRZ-T7's 500mA boost + 500mA disconnect FETs. | Lacks zero-current disable capability - unsuitable for true battery-isolation use cases like OLED standby. | Choose TPS61040DRBR only if higher output voltage (28V) is required and input disconnect is handled externally. |
| MAX17062ETA+ | Includes integrated LDO post-regulator and I²C interface; larger 16-pin TQFN package; lower 500kHz max frequency. | Designed for notebook GPU/display rail sequencing - adds complexity not needed for standalone OLED bias. | Prefer MAX17062ETA+ only when digital control, multiple output rails, or tighter ripple specs (<10mVpp) are mandatory. |
Compared with TPS61040DRBR and MAX17062ETA+, the ISL97701IRZ-T7 uniquely combines integrated input disconnect, sub-µA shutdown, and 1MHz synchronization in a 3×3mm DFN - making it optimal for space-constrained, battery-sensitive OLED and sensor bias applications where isolation and efficiency are co-prioritized.
Availability
ISL97701IRZ-T7 is available at Aetrix Electronics and suitable for OLED display power, adjustable bias supplies, and low-power industrial sensor nodes requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for ISL97701IRZ-T7 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
Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and power management ICs for industrial, computing, and portable electronics markets.
The ISL97701IRZ-T7 belongs to Intersil's high-efficiency DC-DC boost regulator product line, engineered specifically for compact, battery-powered display and sensor bias applications demanding low quiescent current and robust fault protection.
FAQ
What is the maximum output voltage supported by the ISL97701IRZ-T7?
The ISL97701IRZ-T7 supports up to 28V output voltage. Its overvoltage protection threshold is set at 31–35V at the VOUT pin, ensuring safe operation even under transient or feedback-divider fault conditions. Output voltage is set externally via the FB pin and resistor divider network, with typical configurations delivering 12.65V or 18.3V as shown in the datasheet application circuits.
Does the ISL97701IRZ-T7 require external compensation components?
No, the ISL97701IRZ-T7 includes fully integrated compensation circuitry with fixed parameters. The device does not require external compensation capacitors or resistors on the FB pin - simplifying design and reducing bill-of-materials count. This integration is confirmed in the Function Overview section of the FN6474 datasheet, which states "compensation network and soft-start functions are built in with fixed parameters without any need for further external components."
How does the input disconnect switch in the ISL97701IRZ-T7 improve system reliability?
The input disconnect switch in the ISL97701IRZ-T7 isolates the boost inductor from the input supply (VDD) during disable or fault conditions, reducing VDD supply current to <0.1µA and eliminating reverse current flow into the output load. This prevents battery discharge during standby and protects downstream circuitry from overvoltage faults - a key reliability feature absent in standard boost converters without integrated disconnect FETs.
Can the ISL97701IRZ-T7 be synchronized to an external clock, and what is the valid frequency range?
Yes, the ISL97701IRZ-T7 can be synchronized to an external clock applied to the NSYNC pin. The valid synchronization frequency range is 600kHz to 1.4MHz, with timing referenced to the falling edge of the NSYNC signal. The device automatically detects synchronization presence and disables its internal 1MHz oscillator when NSYNC frequency exceeds ~300kHz, as specified in the Electrical Specifications and Description of Operation sections of FN6474.
What package type and thermal characteristics apply to the ISL97701IRZ-T7?
The ISL97701IRZ-T7 uses a 10-lead 3×3 mm DFN package (MDP0047) with exposed thermal pad. Its thermal resistance is θJA = 48°C/W and θJC = 7°C/W (typical), enabling efficient heat transfer to the PCB. The package is Pb-free, RoHS-compliant, and rated for MSL3 reflow per JEDEC J-STD-020 - verified in the Thermal Information and Ordering Information sections of the FN6474 datasheet.
ISL97701IRZ-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 4.3V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 1.2A (Switch)
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
ISL97701IRZ-T7 FAQ
1.How can I place an order for ISL97701IRZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97701IRZ-T7 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 ISL97701IRZ-T7 reliable?
The price and inventory of ISL97701IRZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97701IRZ-T7 is usually 5 days.
3.What payment methods are accepted for ISL97701IRZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97701IRZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97701IRZ-T7?
ISL97701IRZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97701IRZ-T7 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 ISL97701IRZ-T7?
For technical support, including ISL97701IRZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97701IRZ-T7 requirements.
6.How does Aetrix verify that ISL97701IRZ-T7 is sourced from the original manufacturer or authorized distributors?
All ISL97701IRZ-T7 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 ISL97701IRZ-T7 meets industry standards.
7.What is the process for return or replacement of ISL97701IRZ-T7?
All ISL97701IRZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with ISL97701IRZ-T7, 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 ISL97701IRZ-T7 part is unused and in its original packaging.
Return procedure for ISL97701IRZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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