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Renesas ISL97701IRZ
- Part No.:
- ISL97701IRZ
- Manufacturer:
- Renesas
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL97701IRZ.pdf
- Description:
- IC REG BOOST ADJ 1.2A 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,894
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Product details
Overview
ISL97701IRZ 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-leakage during disable are critical.
For engineers reviewing the ISL97701IRZ datasheet, ISL97701IRZ pinout, ISL97701IRZ application, or ISL97701IRZ equivalent, key selection criteria include its 10-lead 3×3 DFN package, 1MHz internal oscillator (synchronizable to 600kHz–1.4MHz), 1.15V feedback reference, soft-start sequence, and integrated VDD-to-VDDOUT disconnect switch for true output isolation.
Technical Context
The ISL97701IRZ implements a constant-frequency PWM boost architecture with fixed internal compensation and a six-state soft-start sequence (Soft Inrush → VDDOUT Enable → Soft Boost 25/50/75 → Normal). Its LX driver supports 1200mA peak current limit and 0.4Ω ON-resistance, while the integrated Schottky diode exhibits 0.5V typical forward voltage at 10mA.
Fault management is hardware-based and autonomous: overvoltage detection at VOUT triggers immediate shutdown at 31V threshold; overcurrent on VDDOUT disables both VDDOUT and LX drivers at 800mA; thermal shutdown activates at 135°C junction temperature with hysteresis (100°C turn-on). All logic inputs (NEN, NSYNC, FB) feature internal pull-up resistors (250kΩ typ) and TTL-compatible thresholds (VHI = 1.8V, VLO = 0.7V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion and Li-polymer battery operation without external LDO pre-regulation. |
| Output Voltage Capability | Up to 28V - enables driving high-voltage OLED panels requiring >12V bias rails. |
| Max Output Current | 50mA at 18V - sufficient for small-to-medium passive-matrix OLED displays with low duty-cycle drive. |
| Peak Efficiency | 87% - achieved with integrated 500mA switches and optimized gate drive, reducing external component count and board area. |
| Switching Frequency | 1MHz (internal) or 600kHz–1.4MHz (externally synchronized) - allows EMI tuning and inductor size optimization. |
| Feedback Reference Voltage | 1.15V ±2.5% over temperature - sets precise output voltage via resistor divider (e.g., 390kΩ/39kΩ yields 12.65V). |
| Disable Supply Current | 0.1µA typ - ensures zero battery drain when NEN is high, critical for portable device standby modes. |
Pinout & Package
ISL97701IRZ is housed in a Pb-free, RoHS-compliant 10-lead 3×3 mm DFN package (MDP0047) with exposed thermal pad for enhanced thermal dissipation. The package supports reflow soldering per JEDEC J-STD-020 Pb-free profile and is rated for -40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 GND | Power and signal ground reference | Common return path for VDD, VDDOUT, LX, and FB; connects directly to thermal pad for heat transfer. |
| 2 VDDOUT | Fault-protected input disconnect switch output | Connects inductor to VDD only when enabled; isolates input during fault or disable to prevent reverse current flow. |
| 3 VDD | Main supply input | Accepts 2.3V–5.5V input; powers internal circuitry and drives VDDOUT switch; monitored for undervoltage lockout. |
| 4 NSYNC | External synchronization input (falling-edge triggered) | Allows clock alignment to system master clock; supports 600kHz–1.4MHz sync range with 80ns timing delay to LX falling edge. |
| 5 FB | Feedback input for output voltage regulation | Compares divided output voltage against 1.15V reference; internal error amplifier controls PWM duty cycle. |
| 6 NC | No-connect terminal | Must remain unconnected; no internal connection or function. |
| 8 NEN | Active-low enable input | Pulling high disables all switching and disconnects VDDOUT; leakage <1µA ensures ultra-low standby current. |
| 9 VOUT | Boost output voltage node | High-side output connected to cathode of integrated Schottky diode; monitored for overvoltage (31V threshold). |
| 10 LX | Boost switch node | Drives external inductor; integrates 500mA FET with 0.4Ω RON; peak current limited to 1200mA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky diode | Eliminates external diode, reduces BOM count and PCB footprint; 0.5V VF at 10mA minimizes conduction loss. |
| Input disconnect switch | VDD-to-VDDOUT MOSFET with 0.2Ω RON and 0.01µA leakage ensures true zero-output-current state when disabled. |
| Six-stage soft-start sequence | Prevents inrush current spikes and output overshoot; includes controlled VDDOUT ramp and incremental LX current limiting. |
| Hardware fault protection | Dedicated comparators monitor VDD (UVLO), VDDOUT (800mA OC), VOUT (31V OV), and die temperature (135°C OT) - no firmware required. |
| Internal 1MHz oscillator | Enables compact design with minimal external components; synchronizable to external clock for EMI reduction or system timing alignment. |
Applications
| OLED Display Power | AMOLED Panel Bias Supply |
|---|---|
|
Use Scenario: Powering passive-matrix OLED (PMOLED) displays in handheld medical devices requiring long battery life and stable brightness control. IC Role / Device Role / Timing Role: Boost regulator generating 12–18V bias rail from 3.6V Li-ion battery; regulates output via FB pin with 1.15V reference. Use Value: Integrated disconnect switch eliminates battery drain during sleep mode; 87% efficiency extends runtime by minimizing thermal loss in compact enclosure. |
Use Scenario: Providing programmable VDD and VSS bias for active-matrix OLED (AMOLED) pixel drivers in smartwatches. IC Role / Device Role / Timing Role: High-frequency (1MHz) boost converter synchronized to display controller clock via NSYNC pin for noise suppression. Use Value: 600kHz–1.4MHz sync range enables EMI filtering at known frequencies; soft-start prevents panel flicker during power-up. |
| Low-Power Adjustable Supply | Portable Instrumentation Bias Rail |
|
Use Scenario: Generating adjustable high-voltage rails (e.g., 5–25V) for sensor biasing in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Programmable boost regulator using external R1/R2 divider; FB pin accepts 1.15V reference for precise output setting. Use Value: 2.3V minimum input enables operation down to nearly depleted Li-ion cells; 0.1µA disable current preserves battery charge during extended idle periods. |
Use Scenario: Supplying clean, regulated 15V bias for analog front-end op-amps and ADC references in portable test equipment. IC Role / Device Role / Timing Role: Low-noise boost converter with internal compensation and fixed soft-start timing; LX node isolated from sensitive analog ground. Use Value: Integrated Schottky diode and optimized layout guidelines reduce output ripple (<1% typical); thermal pad ensures stable operation under continuous load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17065ETA+ | Higher 2MHz switching frequency; 30V max output; requires external Schottky diode; no integrated input disconnect switch. | Lacks zero-leakage disable capability; better suited for space-constrained apps needing faster transient response. | Select MAX17065ETA+ only if higher frequency and smaller inductors are prioritized over battery-isolation functionality. |
| TPS61040DRVR | 28V max output; 0.5A switch current; no integrated Schottky or input disconnect; 5-pin SOT-23 package. | Requires external diode and lacks fault-driven VDDOUT disconnection; simpler but less protected architecture. | Choose TPS61040DRVR for cost-sensitive, non-critical applications where full fault protection is not required. |
Compared with MAX17065ETA+ and TPS61040DRVR, the ISL97701IRZ uniquely combines integrated Schottky diode, input disconnect switch, and hardware-enforced fault protection in a 10-lead DFN - enabling true zero-current disable and robust operation in battery-powered OLED systems without external protection circuitry.
Availability
ISL97701IRZ is available at Aetrix Electronics and suitable for OLED display power, AMOLED panel bias, and low-power adjustable supply applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL97701IRZ 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 consumer applications, with ISO9001-certified manufacturing.
The ISL97701IRZ belongs to Intersil's high-efficiency DC-DC boost regulator product line, engineered specifically for portable display power where input disconnect, low quiescent current, and integrated protection are essential.
FAQ
What is the maximum output voltage supported by the ISL97701IRZ?
The ISL97701IRZ supports up to 28V output voltage, with overvoltage protection triggering at 31V on the VOUT pin. This allows safe operation into high-voltage OLED bias rails while preventing damage from transient overvoltage events. The actual regulated output is set externally via the FB resistor divider, and the 28V rating reflects the absolute maximum capability under typical operating conditions specified in the FN6474 datasheet.
Does the ISL97701IRZ require external compensation components?
No, the ISL97701IRZ includes fully integrated compensation circuitry with fixed parameters - no external capacitors or resistors are needed on the COMP or FB pins. This simplifies design, reduces bill-of-materials count, and ensures stable loop response across temperature and load variations without tuning. The internal compensation is optimized for standard ceramic output capacitors (3.3µF–6.6µF) and inductors (4.7µH–15µH) listed in the datasheet.
How does the ISL97701IRZ achieve zero output current when disabled?
The ISL97701IRZ achieves zero output current during disable via its integrated VDD-to-VDDOUT disconnect switch. When NEN is high, this low-RON (0.2Ω) MOSFET opens the path between the input supply and the boost inductor, physically isolating the input from the output stage. Unlike conventional boost converters that allow reverse current through the diode, this architecture guarantees <0.01µA leakage at VDDOUT, eliminating battery drain in standby mode - a critical feature for portable OLED applications.
Can the ISL97701IRZ be synchronized to an external clock, and what is the valid frequency range?
Yes, the ISL97701IRZ supports external synchronization via the NSYNC pin, accepting falling-edge-triggered clock signals from 600kHz to 1.4MHz. Within this range, the LX switching frequency locks precisely to the external clock, and the falling edge of LX is aligned to the NSYNC falling edge with 80–100ns delay. This capability enables EMI reduction through frequency dithering or system-level timing coordination - essential in noise-sensitive display and instrumentation applications.
What thermal performance can be expected from the ISL97701IRZ in a typical 3×3 DFN layout?
In a standard PCB layout with the ISL97701IRZ's exposed thermal pad soldered to a 250mm² copper area, the device achieves θJA = 48°C/W and θJC = 7°C/W. At 50mA output into 18V with 87% efficiency, power dissipation is ~110mW, resulting in ~5.3°C junction-to-ambient rise above ambient - well within the +125°C max junction rating. Thermal shutdown activates only above 135°C, providing robust margin under worst-case ambient and load conditions.
ISL97701IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for ISL97701IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97701IRZ 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 reliable?
The price and inventory of ISL97701IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97701IRZ is usually 5 days.
3.What payment methods are accepted for ISL97701IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97701IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97701IRZ?
ISL97701IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97701IRZ 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?
For technical support, including ISL97701IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97701IRZ requirements.
6.How does Aetrix verify that ISL97701IRZ is sourced from the original manufacturer or authorized distributors?
All ISL97701IRZ 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 meets industry standards.
7.What is the process for return or replacement of ISL97701IRZ?
All ISL97701IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL97701IRZ, 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 part is unused and in its original packaging.
Return procedure for ISL97701IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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