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Renesas ISL97516IUZ
- Part No.:
- ISL97516IUZ
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL97516IUZ.pdf
- Description:
- IC REG BOOST ADJ 1.7A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,780
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Product details
Overview
ISL97516IUZ from Renesas (formerly Intersil) is a high-frequency, constant-frequency PWM step-up DC/DC regulator with integrated 2.0A/200mΩ power MOSFET, 2.3V–5.5V input range, 1.1×VIN–25V output capability, and selectable 620kHz/1.25MHz switching frequency - optimized for TFT-LCD bias supplies in portable displays.
For engineers reviewing the ISL97516IUZ datasheet, ISL97516IUZ pinout, ISL97516IUZ application, or ISL97516IUZ equivalent, key selection criteria include its ultra-low shutdown current (<1µA), adjustable soft-start via external capacitor, internal thermal protection, 1.1mm max-height 8-lead MSOP package, and compatibility with low-ESR ceramic output capacitors.
Technical Context
The ISL97516IUZ employs current-mode PWM control with an internal transconductance error amplifier (70–150 µS) and external compensation (COMP pin) to enable stable loop design across varying loads and output capacitors. Its dual-frequency selection (620kHz/1.25MHz) directly impacts inductor size and transient response speed.
It integrates a 2.0A peak-current-limited N-channel MOSFET with 200mΩ typical rDS(ON), supports 1.294V ±1.4% feedback reference accuracy, and features independent EN-controlled shutdown with <1µA quiescent draw. The FSEL pin sets frequency by logic level, not resistor divider, ensuring deterministic operation.
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 flexible TFT-LCD gate driver and VCOM bias generation up to 25V. |
| Switching Frequency | Selectable 620kHz or 1.25MHz - determines inductor size (e.g., 10µH at 1.25MHz vs. 22µH at 620kHz) and load transient bandwidth. |
| Peak Switch Current Limit | 1.7A min / 2.0A typ - defines maximum deliverable output current under worst-case duty cycle and input conditions. |
| Feedback Reference Voltage | 1.294V ±1.4% - sets output voltage precision via external resistor divider (e.g., R1=85.2kΩ, R2=10kΩ → 12V). |
| Shutdown Quiescent Current | <1µA - enables battery-critical systems to maintain >1-year shelf life in standby mode. |
| Package | 8-lead MSOP, 1.1mm max height - meets space-constrained portable display module requirements (e.g., PCMCIA, handhelds). |
Pinout & Package
ISL97516IUZ 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 stability with ceramic output caps. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.294V reference enables precise output regulation. |
| 3 - EN | Enable/shutdown control | Logic-level input: pull low to disable regulator and reduce supply current to <1µA. |
| 4 - GND | Analog and power ground | Common return for feedback, control, and power paths; requires low-impedance PCB connection. |
| 5 - LX | Power switch node | Drain of internal MOSFET; connects to inductor and Schottky diode anode - high dv/dt node. |
| 6 - VDD | Analog supply input | Powered from input rail; requires local 0.1µF ceramic bypass capacitor for noise immunity. |
| 7 - FSEL | Frequency select | Logic input: grounded → 620kHz; tied to VDD → 1.25MHz - no resistor needed. |
| 8 - SS | Soft-start control | Accepts external capacitor (e.g., 27nF) to linearly ramp output voltage and limit inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.0A/200mΩ MOSFET | Eliminates external high-side switch and reduces BOM count while maintaining >90% efficiency at 200mA–500mA loads. |
| Selectable 620kHz/1.25MHz switching | Enables trade-off between small magnetics (1.25MHz) and lower EMI/switching loss (620kHz) without changing IC. |
| Adjustable soft-start via SS pin | Prevents output overshoot and inrush into large capacitive loads using a single external capacitor (e.g., 27nF). |
| Internal thermal shutdown | Protects against sustained overload or poor heatsinking by disabling switching above 150°C junction temperature. |
| 1.294V precision feedback reference | Ensures ±1.4% output voltage accuracy over -40°C to +85°C, critical for stable LCD panel bias voltages. |
Applications
| TFT-LCD Display Bias Supply | GSM/CDMA Phone Backlight Driver |
|---|---|
|
Use Scenario: Powering gate-on/gate-off and VCOM bias rails in 3.5"–7" color TFT panels used in industrial handhelds and medical displays. IC Role / Device Role / Timing Role: Primary step-up regulator generating 12V–25V from 3.3V system rail with fast transient response to pixel row switching. Use Value: 1.25MHz operation allows use of 10µH inductors and achieves <100µs recovery from 100mA load steps - prevents image flicker. |
Use Scenario: Driving white LED strings in dual-mode GSM/CDMA feature phones requiring dynamic brightness control and low-noise operation. IC Role / Device Role / Timing Role: Constant-frequency boost converter supplying regulated current source input with EN-controlled dimming sequencing. Use Value: Adjustable soft-start (SS pin) eliminates LED flash during power-on, while 620kHz mode reduces conducted EMI near cellular RF bands. |
| Digital Camera CCD/CMOS Sensor Bias | DSL Modem Line Interface Power |
|
Use Scenario: Generating 15V–20V analog bias for CCD/CMOS image sensors and ADC front-ends in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency, low-noise boost stage delivering clean, ripple-free voltage to sensitive analog imaging circuitry. Use Value: External COMP compensation enables tight load regulation (<0.3%) and <10mV p-p output ripple with X7R ceramic caps - preserves SNR. |
Use Scenario: Providing isolated 12V/24V auxiliary power for line-driver amplifiers and hybrid circuits in ADSL/VDSL modems. IC Role / Device Role / Timing Role: Compact, thermally robust boost regulator operating from 3.3V/5V logic rails in space-constrained modem PCBs. Use Value: 1.1mm max-height MSOP package fits under metal shielding; internal thermal protection ensures reliability during extended line fault conditions. |
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 Renesas-recommended replacement; improved 1.25MHz accuracy (±5% vs ±12%), lower IQ in shutdown (0.5µA), same pinout and package. | Identical functional scope but qualified for newer designs; supports tighter output tolerance and longer battery life in portable devices. | Preferred for new designs where long-term supply continuity and enhanced spec margin are required. |
| TPS61088RHLR | TI part with higher 4.5A switch, wider 2.7V–12V input, fixed 1.1MHz freq, no FSEL pin; requires different compensation network. | Better suited for higher-output-current applications (>1A), but lacks frequency selectability and has larger 14-pin QFN footprint. | Consider only when >500mA output current or >12V input is needed - not drop-in compatible. |
Compared with ISL97516IUZ, ISL97519A offers tighter frequency tolerance and lower shutdown current in identical form factor, while TPS61088RHLR delivers higher current at cost of pinout change and loss of frequency flexibility - making ISL97516IUZ optimal for legacy space-constrained TFT-LCD designs requiring dual-frequency agility.
Availability
ISL97516IUZ is available at Aetrix Electronics and suitable for TFT-LCD displays, DSL modems, and portable equipment requiring stable component supply, RoHS-compliant packaging, and full -40°C to +85°C industrial temperature support.
Supply support for ISL97516IUZ 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 acquired Intersil in 2017 and maintains full technical and supply chain continuity for legacy Intersil power management products.
The ISL97516IUZ belongs to Intersil's high-frequency boost regulator family, designed specifically for compact, high-efficiency DC/DC conversion in portable display and communication equipment.
FAQ
What is the maximum output voltage supported by the ISL97516IUZ?
The ISL97516IUZ supports output voltages from 1.1×VIN up to 25V. This is enforced by absolute maximum ratings: LX-to-GND voltage must not exceed 27V, and the internal MOSFET is rated for 25V drain-source breakdown. For outputs above 25V, Renesas recommends the cascaded MOSFET topology shown in Figure 14 of the FN9261 datasheet - which is explicitly validated for ISL97516IUZ.
Does the ISL97516IUZ require an external Schottky diode, and what are the key selection criteria?
Yes, the ISL97516IUZ requires an external Schottky diode connected between LX and VOUT. Per the datasheet, it must handle ≥2.0A peak forward current, withstand >25V reverse voltage (to match max output), and exhibit low forward voltage (≤0.6V) and low leakage to preserve efficiency. Recommended types include Vishay VSKY1204 or ON Semiconductor MBRS340T3G - both validated in typical application circuits for ISL97516IUZ.
How does the FSEL pin configure switching frequency on the ISL97516IUZ?
The FSEL pin on the ISL97516IUZ is a logic-level input: connecting it to GND selects 620kHz (±20%), while tying it to VDD or a logic-high signal selects 1.25MHz (±20%). No pull-up/down resistors are required - direct connection suffices. This dual-frequency capability is intrinsic to the ISL97516IUZ silicon and confirmed across all production lots per FN9261 Rev 6.00 electrical specifications.
Can the ISL97516IUZ operate with ceramic output capacitors, and what compensation is needed?
Yes, the ISL97516IUZ is explicitly designed for low-ESR ceramic output capacitors (X5R/X7R). Its transconductance error amplifier and external COMP pin allow full loop compensation - typically a series RC network (e.g., 4.7kΩ + 4.7nF) from COMP to GND, as verified in the "Loop Compensation" section of FN9261. This ensures stability with 10µF–22µF ceramics, unlike older controllers requiring tantalum.
Is the ISL97516IUZ pin-compatible with the ISL97519A, and what are the key upgrade benefits?
Yes, the ISL97519A is a Renesas-recommended pin-compatible replacement for ISL97516IUZ, sharing identical 8-lead MSOP package, pinout, and basic functionality. Key upgrades include ±5% switching frequency accuracy (vs ±20%), 0.5µA shutdown current (vs <1µA), and improved thermal shutdown hysteresis - all documented in ISL97519A's datasheet (FN8625). No PCB changes are required for migration.
ISL97516IUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for ISL97516IUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97516IUZ 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 reliable?
The price and inventory of ISL97516IUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97516IUZ is usually 5 days.
3.What payment methods are accepted for ISL97516IUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97516IUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97516IUZ?
ISL97516IUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97516IUZ 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?
For technical support, including ISL97516IUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97516IUZ requirements.
6.How does Aetrix verify that ISL97516IUZ is sourced from the original manufacturer or authorized distributors?
All ISL97516IUZ 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 meets industry standards.
7.What is the process for return or replacement of ISL97516IUZ?
All ISL97516IUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL97516IUZ, 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 part is unused and in its original packaging.
Return procedure for ISL97516IUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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