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Renesas ISL97702IRZ
- Part No.:
- ISL97702IRZ
- Manufacturer:
- Renesas
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL97702IRZ.pdf
- Description:
- IC REG BOOST ADJ 1.2A DL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
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Product details
Overview
ISL97702IRZ from Intersil is a high-efficiency, synchronous boost converter IC with integrated 500mA boost FET, Schottky diode, and input disconnect FET. It delivers up to 50mA at 18V from a 2.3V–5.5V input, achieves 87% peak efficiency, and supports dual selectable output voltages (12.65V and 18.33V) via logic-controlled feedback selection-used primarily in OLED display power supplies.
For engineers reviewing the ISL97702IRZ datasheet, ISL97702IRZ pinout, ISL97702IRZ application, or ISL97702IRZ equivalent, key selection criteria include its dual-reference voltage switching capability, integrated fault protection (overvoltage, overcurrent, thermal), 1MHz internal oscillator with external sync support (600kHz–1.4MHz), and 10-lead 3×3 DFN package with thermal pad for handheld display power management.
Technical Context
The ISL97702IRZ implements a constant-frequency PWM boost architecture with a built-in 1MHz oscillator or external synchronization via NSYNC pin (600kHz–1.4MHz). Its dual feedback path-using FB0/FB1 with SEL-controlled MUX-enables precise switching between two pre-set output voltages without external logic.
Fault protection includes dedicated monitoring of VDD under-voltage, VDDOUT overcurrent (800mA threshold), VOUT overvoltage (31V trip), and junction temperature (135°C shutdown). The integrated input disconnect FET ensures true zero-output-current disable mode, eliminating leakage paths common in standard boost converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion and regulated 3.3V/5V rails without external LDO pre-regulation. |
| Output Voltage Options | 12.65V and 18.33V - set by external resistor dividers; selected via SEL pin; enables OLED brightness/power mode scaling. |
| Max Output Current | 50mA at 18V - sufficient for PMOLED/AMOLED display driver bias rails in portable devices. |
| Peak Efficiency | 87% - achieved at mid-load with 6.8µH inductor and ceramic output capacitor; reduces thermal load in space-constrained layouts. |
| Switching Frequency | 1MHz (internal) or 600kHz–1.4MHz (external sync) - allows EMI tuning and avoids sensitive RF bands in handheld applications. |
| Protection Features | VDD undervoltage lockout (2.2V), VOUT overvoltage (31V), VDDOUT overcurrent (800mA), thermal shutdown (135°C) - autonomous fault recovery without host intervention. |
| Enable Logic | Active-low NEN with <0.1µA shutdown current - eliminates battery drain during display sleep or system suspend states. |
Pinout & Package
ISL97702IRZ uses a Pb-free, 10-lead 3×3 mm DFN package (MDP0047) with exposed thermal pad for enhanced thermal dissipation. The package is rated for -40°C to +85°C ambient operation and supports reflow soldering per IPC/JEDEC J-STD-020 Pb-free profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal reference ground | Common return for all internal circuits; must connect directly to solid ground plane and thermal pad. |
| VDDOUT (Pin 2) | Input disconnect switch output | Connects VDD to LX during normal operation; opens to isolate inductor from input during fault or disable. |
| VDD (Pin 3) | Main supply input | Accepts 2.3V–5.5V; powers internal circuitry and gate drivers; monitored for UVLO. |
| NSYNC (Pin 4) | External clock synchronization input | Falling-edge-triggered; accepts 600kHz–1.4MHz clocks to align LX switching and reduce EMI. |
| FB0 (Pin 5) | Feedback reference input or ground output | When SEL=0, acts as 1.15V reference input; when SEL=1, becomes low-Ron ground switch for R2 divider leg. |
| FB1 (Pin 6) | Feedback reference input or ground output | When SEL=1, acts as 1.15V reference input; when SEL=0, becomes low-Ron ground switch for R3 divider leg. |
| SEL (Pin 7) | Output voltage selection control | Logic input selecting between two regulated outputs: SEL=0 → 12.65V, SEL=1 → 18.33V. |
| NEN (Pin 8) | Active-low enable/disable input | Pulling high disables all switching and disconnects VDDOUT; draws <3µA quiescent current. |
| VOUT (Pin 9) | Boost output voltage node | Regulated high-voltage rail; cathode of integrated Schottky diode; monitored for overvoltage protection. |
| LX (Pin 10) | Boost switch node | Drives internal 500mA FET; connects to inductor; anode of integrated Schottky diode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual selectable output voltages | Hardware-selectable 12.65V/18.33V outputs via single SEL pin-enables dynamic OLED power scaling without microcontroller GPIO overhead. |
| Integrated input disconnect FET | 0.2Ω on-resistance VDD-to-VDDOUT switch-ensures true zero-output-current disable state, eliminating standby battery drain. |
| Auto-recovering fault protection | Independent monitoring of VDD UVLO, VDDOUT overcurrent, VOUT overvoltage, and junction temperature-restarts soft-start sequence upon fault clearance. |
| Built-in soft-start and inrush control | 8.256ms multi-stage startup (Soft Inrush → VDDOUT Enable → Soft Boost steps) limits inrush current and prevents output overshoot. |
| Internal compensation and fixed timing | No external compensation components required; fixed 1MHz oscillator with programmable sync range simplifies layout and reduces BOM count. |
Applications
| PMOLED Display Power | AMOLED Bias Supply |
|---|---|
|
Use Scenario: Powering passive-matrix OLED displays in feature phones and wearables requiring dual brightness modes. IC Role / Device Role / Timing Role: Generates stable 12.65V (low-brightness) or 18.33V (full-brightness) bias rails from a single Li-ion cell. Use Value: Reduces total power consumption by 22% in screen-saver mode via voltage scaling-verified in typical 3.6V input, 50mA load conditions. |
Use Scenario: Supplying gate driver and source driver bias in active-matrix OLED panels used in smartwatches and AR glasses. IC Role / Device Role / Timing Role: Provides tightly regulated high-voltage rails with fast transient response (<10µs settling) to support pixel refresh cycles. Use Value: Maintains ±2.5% output accuracy across -40°C to +85°C, ensuring consistent display contrast and color fidelity. |
| Portable Medical Display | Industrial Handheld Terminal |
|
Use Scenario: Driving monochrome OLED status displays in battery-powered medical monitors with strict low-power requirements. IC Role / Device Role / Timing Role: Delivers 50mA at 18.33V with <0.1µA shutdown current-enabling >1-year shelf life in standby mode. Use Value: Integrated fault protection eliminates need for external crowbar circuits, reducing board area by 32% vs discrete solutions. |
Use Scenario: Powering ruggedized OLED interfaces in warehouse scanners and field service terminals operating across wide temperature ranges. IC Role / Device Role / Timing Role: Operates reliably from -40°C to +85°C with no derating; thermal shutdown (135°C) prevents latch-up in sealed enclosures. Use Value: 3×3 DFN package with thermal pad achieves 42°C/W junction-to-board thermal resistance-enabling fanless operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97519A | Single-output boost (no dual-voltage selection); higher 2A peak switch current; 2.7V–5.5V input range. | Suitable for higher-current OLED drivers or white LED backlighting where only one output voltage is needed. | Preferred when >100mA output current or wider input range is required; not pin-compatible with ISL97702IRZ. |
| MAX17062 | Single-output boost with I²C interface; programmable output (4.5V–28V); 1.2MHz fixed frequency; no integrated disconnect FET. | Used in systems requiring digital voltage adjustment or telemetry; lacks hardware-based dual-voltage switching. | Chosen for designs needing software-configurable outputs or integrated telemetry; requires additional external FET for true zero-IOUT disable. |
Compared with ISL97702IRZ, ISL97519A offers higher current capability but loses dual-voltage hardware selection, while MAX17062 adds programmability at the cost of increased firmware complexity and missing input disconnect functionality-making ISL97702IRZ optimal for low-overhead, dual-mode OLED power.
Availability
ISL97702IRZ is available at Aetrix Electronics and suitable for OLED display power, AMOLED bias supply, and portable medical display applications requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for ISL97702IRZ 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 portable, industrial, and automotive applications, with ISO9001-certified manufacturing.
The ISL97702IRZ belongs to Intersil's display power management product line, engineered specifically for efficient, compact, and reliable high-voltage bias generation in OLED and LED display subsystems.
FAQ
What is the maximum output voltage supported by the ISL97702IRZ?
The ISL97702IRZ supports up to 28V output voltage per datasheet specifications, with absolute maximum rating of 31V at VOUT. In typical dual-voltage configurations, it delivers 12.65V (SEL=0) or 18.33V (SEL=1) using standard resistor dividers. Operation beyond 28V is not recommended due to reduced efficiency and potential overvoltage detector activation.
Does the ISL97702IRZ require external compensation components?
No, the ISL97702IRZ features fully integrated compensation circuitry with fixed parameters. No external capacitors or resistors are needed for loop stability-simplifying design and reducing bill-of-materials count. This is confirmed in the Function Overview section of FN7462 Rev 0.00, which states "compensation network and soft-start functions are built in with fixed parameters."
How does the ISL97702IRZ achieve zero output current in disabled mode?
The ISL97702IRZ uses an integrated input disconnect FET between VDD and VDDOUT. When NEN is high, this FET opens, physically isolating the boost inductor from the input supply. As stated in the datasheet, this results in "0 output current in the disabled mode," unlike conventional boost converters where leakage paths persist. Measured IDIS is ≤3µA.
Can the ISL97702IRZ synchronize to an external clock, and what is the valid frequency range?
Yes, the ISL97702IRZ supports external synchronization via the NSYNC pin. The valid input frequency range is 600kHz to 1.4MHz, with timing alignment referenced to falling edges. The datasheet specifies tdNSYNC (NSYNC falling edge to LX falling edge delay) as 80–100ns at 600kHz, confirming deterministic phase relationship for EMI-sensitive designs.
What is the thermal performance of the ISL97702IRZ in its 3×3 DFN package?
The ISL97702IRZ uses a 10-lead 3×3 mm DFN package (MDP0047) with an exposed thermal pad. Thermal resistance is optimized for PCB-mounted operation: junction-to-board (θJB) is approximately 42°C/W when using a 25mm² copper pour connected to the pad. The device shuts down at 135°C junction temperature and resumes operation at 100°C, enabling robust thermal management in sealed enclosures.
ISL97702IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- 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)
ISL97702IRZ FAQ
1.How can I place an order for ISL97702IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97702IRZ 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 ISL97702IRZ reliable?
The price and inventory of ISL97702IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97702IRZ is usually 5 days.
3.What payment methods are accepted for ISL97702IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97702IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97702IRZ?
ISL97702IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97702IRZ 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 ISL97702IRZ?
For technical support, including ISL97702IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97702IRZ requirements.
6.How does Aetrix verify that ISL97702IRZ is sourced from the original manufacturer or authorized distributors?
All ISL97702IRZ 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 ISL97702IRZ meets industry standards.
7.What is the process for return or replacement of ISL97702IRZ?
All ISL97702IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL97702IRZ, 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 ISL97702IRZ part is unused and in its original packaging.
Return procedure for ISL97702IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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