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Renesas ISL97516IUZ-T
- Part No.:
- ISL97516IUZ-T
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL97516IUZ-T.pdf
- Description:
- IC REG BOOST ADJ 1.7A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,404
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Product details
Overview
ISL97516IUZ-T from Intersil is a high-efficiency, constant-frequency PWM step-up regulator with integrated 2.0A/200mΩ MOSFET, 2.3V–5.5V input range, 1.1×VIN–25V output capability, and selectable 620kHz/1.25MHz switching frequency - designed for TFT-LCD backlight power in portable displays.
For engineers reviewing the ISL97516IUZ-T datasheet, ISL97516IUZ-T pinout, ISL97516IUZ-T application, or ISL97516IUZ-T equivalent, key selection criteria include soft-start control via external capacitor, compensation network flexibility for ceramic output capacitors, thermal shutdown protection, and MSOP-8 package compatibility with space-constrained handheld designs.
Technical Context
The ISL97516IUZ-T uses current-mode PWM control with internal transconductance error amplifier (70–150 µS) and external COMP pin for loop stabilization. Its dual-frequency selection (620kHz or 1.25MHz) enables trade-offs between inductor size and transient response speed.
It integrates over-temperature protection (150°C trip), VDD UVLO with 2.2V turn-on threshold and 100mV hysteresis, and shutdown current <1µA. The feedback reference is tightly specified at 1.294V ±1.4%, supporting precise output regulation across -40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, Li-polymer, and 3.3V/5V rail inputs without pre-regulation. |
| Output Voltage Range | 1.1×VIN to 25V - enables adjustable boost for LCD bias up to 25V with external resistor divider. |
| Switching Frequency | Selectable 620kHz or 1.25MHz - determines inductor size (e.g., 10µH typical at 1.25MHz) and EMI profile. |
| Peak Switch Current Limit | 1.7A min / 2.0A typ - sets maximum deliverable output current based on VIN, VOUT, and duty cycle. |
| Feedback Reference Voltage | 1.294V ±0.017V - defines output accuracy; used with R1/R2 divider to set VOUT = 1.294V × (1 + R1/R2). |
| Quiescent Current (Shutdown) | <1µA - preserves battery life during system sleep modes in portable equipment. |
| Package | 8-pin MSOP, 1.1mm max height - surface-mount compatible with tight PCB stack-ups in handheld devices. |
Pinout & Package
ISL97516IUZ-T is housed in an 8-lead MSOP package (JEDEC MO-187-AA compliant, pkg drawing M8.118A), measuring 4.9mm × 3.0mm × 1.1mm max, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connects external RC network to set loop gain zero/pole for stable regulation with low-ESR ceramic caps. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.294V reference enables precise VOUT programming. |
| 3 - EN | Enable/shutdown control | Logic-level input: pull low to disable regulator and reduce IQ to <1µA. |
| 4 - GND | Analog & power ground | Common return for feedback, control, and power paths; requires low-impedance PCB connection. |
| 5 - LX | Switch node | Drain of internal 2.0A MOSFET; connects to inductor and Schottky diode anode. |
| 6 - VDD | Analog supply input | Powered from VIN; includes UVLO (2.2V on, 100mV hysteresis) for reliable start-up. |
| 7 - FSEL | Frequency select | Ground = 620kHz; connect to VDD = 1.25MHz - selects inductor size and transient performance. |
| 8 - SS | Soft-start control | Accepts external capacitor to linearly ramp output voltage and limit inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.0A/200mΩ MOSFET | Eliminates external switch, reduces BOM count, and enables >90% efficiency at 3.3V→12V conversion. |
| Adjustable soft-start via SS pin | External capacitor controls output voltage ramp rate, preventing overshoot and limiting inrush into large output caps. |
| External compensation (COMP pin) | Enables optimization of transient response and stability with low-ESR ceramic output capacitors (e.g., X5R/X7R MLCCs). |
| Thermal shutdown protection | 150°C junction trip point prevents damage during overload or poor heatsinking in compact enclosures. |
| Pb-free RoHS-compliant MSOP-8 | Meets IPC/JEDEC J-STD-020 reflow standards; compatible with SnPb and Pb-free assembly processes. |
Applications
| TFT-LCD Backlight Power | Digital Camera Flash Driver |
|---|---|
Use Scenario: Powering white LED strings or cold-cathode fluorescent lamps (CCFL) in portable LCD panels requiring 12–25V bias. IC Role / Device Role / Timing Role: Primary boost converter delivering regulated high-voltage output from single-cell battery input. Use Value: High efficiency (>90%) extends battery runtime; 1.25MHz operation allows miniature 10µH inductors and fast load-step response. | Use Scenario: Charging high-voltage capacitor for xenon flash in compact digital cameras. IC Role / Device Role / Timing Role: High-current step-up regulator charging storage capacitor to ~300V via charge pump cascade. Use Value: 2.0A peak switch current supports rapid capacitor charging; soft-start prevents input rail sag during flash initiation. |
| GSM/CDMA Handset Power | DSL Modem Line Driver |
Use Scenario: Generating RF PA bias voltage and analog subsystem rails in dual-mode cellular handsets. IC Role / Device Role / Timing Role: Secondary voltage rail generator operating from main PMIC output or battery directly. Use Value: Low shutdown current (<1µA) minimizes standby drain; -40°C to +85°C rating ensures reliability in outdoor use. | Use Scenario: Supplying line driver ICs in DSL modems requiring stable 12V or 15V from 3.3V or 5V system rails. IC Role / Device Role / Timing Role: Efficient DC-DC boost stage powering analog front-end circuitry. Use Value: 620kHz/1.25MHz selection balances EMI filtering requirements and board area constraints in dense modem PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97519A | Direct manufacturer-recommended replacement; improved thermal performance, tighter VFB tolerance (±0.5%), same pinout and function. | Identical application scope but rated for higher continuous output current at elevated ambient temperatures. | Select ISL97519A for new designs requiring extended lifetime or higher reliability margin; ISL97516IUZ-T remains valid for legacy production. |
| TPS61085DGKR | 2.5A switch, 1.2MHz fixed frequency, 2.5V–6V input, but no FSEL pin or adjustable soft-start; different pinout and compensation architecture. | Better suited for high-current, fixed-frequency applications where layout reuse is not required. | Choose TPS61085DGKR only when redesigning PCB; not drop-in due to pin mismatch and lack of frequency select. |
Compared with ISL97516IUZ-T, ISL97519A offers enhanced thermal robustness and tighter reference accuracy while maintaining full pin and functional compatibility, whereas TPS61085DGKR provides higher peak current but requires layout changes and lacks frequency flexibility.
Availability
ISL97516IUZ-T is available at Aetrix Electronics and suitable for TFT-LCD displays, GSM/CDMA handsets, and DSL modems requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for ISL97516IUZ-T 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) is a U.S.-based analog and mixed-signal semiconductor company specializing in power management, precision analog, and interface ICs.
The ISL97516IUZ-T belongs to Intersil's high-efficiency DC-DC boost regulator product line, engineered specifically for portable display power applications demanding small solution size, high light-output efficiency, and battery-life optimization.
FAQ
What is the maximum output voltage supported by the ISL97516IUZ-T?
The ISL97516IUZ-T supports output voltages from 1.1×VIN up to 25V. This is achieved using an external resistor divider on the FB pin referenced to the internal 1.294V bandgap. For example, with VIN = 3.3V, the minimum output is ~3.6V, and the absolute maximum is capped at 25V per absolute maximum ratings - exceeding this risks damage to the LX-to-GND junction.
Does the ISL97516IUZ-T require an external Schottky diode?
Yes, the ISL97516IUZ-T requires an external Schottky diode connected between LX and VOUT. The device integrates only the high-side N-channel MOSFET switch; the diode completes the boost topology by providing the freewheeling path during the off-cycle. Diode selection must meet ≥2.0A average current, ≥27V reverse breakdown, and low forward voltage (e.g., <0.6V) to maintain high efficiency.
Can the ISL97516IUZ-T operate from a 2.3V input supply?
Yes, the ISL97516IUZ-T is fully specified to operate down to 2.3V input, with guaranteed functionality across the full -40°C to +85°C temperature range. Its VDD UVLO turns on at 2.2V (±0.1V) with 100mV hysteresis, ensuring reliable startup even under weak battery conditions common in single-cell Li-ion systems.
How is the switching frequency selected on the ISL97516IUZ-T?
Switching frequency is selected via the FSEL pin: connect FSEL to GND for 620kHz operation, or to VDD (or logic-high signal) for 1.25MHz operation. This selection affects inductor size, output ripple, and transient response - 1.25MHz enables smaller magnetics and faster load-step recovery, while 620kHz reduces switching losses at high output currents.
Is the ISL97516IUZ-T pin-compatible with the ISL97519A?
Yes, the ISL97516IUZ-T is pin-compatible with the ISL97519A - same 8-pin MSOP footprint, identical pin functions (COMP, FB, EN, GND, LX, VDD, FSEL, SS), and matching electrical behavior. The ISL97519A is Intersil's recommended replacement with improved thermal specs and tighter feedback reference (±0.5% vs ±1.4%), making it a direct upgrade without PCB changes.
ISL97516IUZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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):
- 5V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 1.7A (Switch)
- Frequency - Switching:
- 620kHz, 1.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ISL97516IUZ-T FAQ
1.How can I place an order for ISL97516IUZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97516IUZ-T 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 ISL97516IUZ-T reliable?
The price and inventory of ISL97516IUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97516IUZ-T is usually 5 days.
3.What payment methods are accepted for ISL97516IUZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97516IUZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97516IUZ-T?
ISL97516IUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97516IUZ-T 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 ISL97516IUZ-T?
For technical support, including ISL97516IUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97516IUZ-T requirements.
6.How does Aetrix verify that ISL97516IUZ-T is sourced from the original manufacturer or authorized distributors?
All ISL97516IUZ-T 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 ISL97516IUZ-T meets industry standards.
7.What is the process for return or replacement of ISL97516IUZ-T?
All ISL97516IUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL97516IUZ-T, 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 ISL97516IUZ-T part is unused and in its original packaging.
Return procedure for ISL97516IUZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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