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Renesas ISL97519IUZ-TK
- Part No.:
- ISL97519IUZ-TK
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL97519IUZ-TK.pdf
- Description:
- IC REG BOOST ADJ 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,043
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Product details
Overview
ISL97519IUZ-TK from Intersil is a high-efficiency, constant-frequency PWM step-up regulator with integrated 2.0A/200mΩ MOSFET, 1% output voltage accuracy, selectable 620kHz or 1.25MHz switching frequency, and operation from 2.3V to 5.5V input for 1.1×VIN to 25V output - used in TFT-LCD bias supplies and portable display power rails.
For engineers reviewing the ISL97519IUZ-TK datasheet, ISL97519IUZ-TK pinout, ISL97519IUZ-TK application, or ISL97519IUZ-TK equivalent, key selection criteria include feedback reference voltage (1.294V), soft-start control via external capacitor, thermal shutdown at 150°C, and MSOP-8 package compatibility with space-constrained handheld and embedded display designs.
Technical Context
The ISL97519IUZ-TK employs current-mode PWM control with internal transconductance error amplifier (70–150 µS) and external compensation (COMP pin), enabling stable regulation with low-ESR ceramic output capacitors. Its dual-frequency selection (FSEL pin) directly configures oscillator timing without external components.
It integrates overtemperature protection (150°C trip), VDD UVLO with 100mV hysteresis (2.2V turn-on), and <1µA shutdown current. The LX pin connects to the drain of the internal N-channel MOSFET, supporting continuous conduction mode boost operation with up to 1A output current at >90% efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Accuracy | ±1% over -40°C to +105°C - ensures stable LCD panel bias voltage without recalibration across temperature. |
| Switching Frequency | Selectable 620kHz or 1.25MHz - enables smaller inductors (e.g., 10µH) and faster load transient response in compact layouts. |
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, Li-polymer, or 3.3V/5V system rails without pre-regulation. |
| Output Voltage Range | 1.1×VIN to 25V - configurable via FB resistor divider for TFT gate drive (AVDD), LED backlight, or analog supply rails. |
| Peak Switch Current | 2.0A (guaranteed ≥1.7A) - sets hard limit on inductor peak current and maximum deliverable output current. |
| Shutdown Current | <1µA - preserves battery life in always-on display subsystems during sleep mode. |
| Thermal Protection | 150°C junction trip with hysteresis - prevents latch-up or damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The ISL97519IUZ-TK is housed in an 8-lead MSOP package (M8.118A) with maximum height of 1.1mm, optimized for ultra-thin portable displays and space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Error amplifier output | Connects external RC network to set loop bandwidth and phase margin for stable regulation with ceramic output caps. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.294V reference enables precise output setting (e.g., 12V = 1.294V × (1 + R1/R2)). |
| 3 - EN | Enable/shutdown control | Active-high logic input; pulling low disables switching and reduces quiescent current to <1µA. |
| 4 - GND | Analog & power ground | Common return for feedback, control, and power paths; requires low-impedance connection to minimize noise coupling. |
| 5 - LX | Power switch node | Drain of internal 2.0A MOSFET; connects to inductor and Schottky diode anode - high dv/dt node requiring careful layout. |
| 6 - VDD | Analog supply input | Powers internal circuitry; requires local 0.1µF ceramic bypass capacitor close to pin for noise immunity. |
| 7 - FSEL | Frequency select | Ground = 620kHz; connect to VDD = 1.25MHz - selects switching frequency without external clock or resistor. |
| 8 - SS | Soft-start control | Accepts external capacitor to linearly ramp output voltage and limit inrush current during startup. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.0A/200mΩ MOSFET | Eliminates external high-side switch and reduces BOM count while maintaining >90% efficiency at 1A load. |
| 1% output voltage accuracy | Ensures consistent TFT gate bias or LED string voltage across temperature and line/load variations - critical for display uniformity. |
| Adjustable soft-start via SS pin | Prevents output overshoot and limits inrush current by controlling rise time with external capacitor value. |
| External compensation (COMP pin) | Enables optimization of transient response and stability with low-ESR ceramic output capacitors - no tantalum required. |
| Thermal shutdown with hysteresis | Protects device under overload or poor heatsinking; auto-recovery after cooldown avoids manual reset requirement. |
Applications
| TFT-LCD Panel Bias Supply | DSL Modem Power Rail |
|---|---|
Use Scenario: Generating AVDD (12–18V) and VGH (15–25V) for active-matrix LCD gate drivers and source drivers. IC Role / Device Role / Timing Role: Primary DC-DC boost converter delivering regulated high-voltage bias rails from 3.3V or 5V system supply. Use Value: 1% output accuracy maintains pixel uniformity; 1.25MHz operation allows 10µH inductor footprint under 2mm². | Use Scenario: Providing isolated 12V rail for DSL line driver ICs and analog front-end circuitry. IC Role / Device Role / Timing Role: Compact, efficient boost stage replacing discrete inductor+MOSFET+controller solutions. Use Value: <1µA shutdown current extends standby time; MSOP-8 package fits tight modem PCB real estate. |
| Digital Camera Backlight Driver | GSM/CDMA Handset Display Power |
Use Scenario: Driving white LED strings requiring 15–20V from single-cell lithium battery (2.7–4.2V). IC Role / Device Role / Timing Role: Constant-current-capable boost controller (with external current sense) powering parallel LED arrays. Use Value: 620kHz/1.25MHz selection balances efficiency vs. EMI; soft-start prevents flash-induced camera sensor reset. | Use Scenario: Supplying 10–15V for OLED or TFT display modules in slim mobile handsets. IC Role / Device Role / Timing Role: Main display power IC operating across full battery range (2.3–5.5V input) with thermal foldback. Use Value: 1.1mm max height MSOP-8 enables integration behind display bezel; -40°C to +105°C rating supports automotive-grade handset variants. |
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 replacement with enhanced thermal performance and updated qualification; same pinout, identical electrical specs except improved thermal resistance. | Preferred for new designs requiring extended lifetime reliability and higher ambient temperature margin. | Select ISL97519A when sourcing new production builds - it supersedes ISL97519IUZ-TK per Intersil's obsolescence notice. |
| TPS61088RHLR | Higher 2.5A switch current, wider 2.7–12V input, but fixed 500kHz/2MHz frequencies and no FSEL pin; requires different compensation. | Better suited for high-current LED drivers or systems needing >1A output; less flexible frequency tuning than ISL97519IUZ-TK. | Choose TPS61088RHLR only if output current >1A is required and board layout allows rework of compensation network. |
Compared with ISL97519IUZ-TK, the ISL97519A offers identical functionality with improved thermal robustness and lifecycle support, while the TPS61088RHLR trades pin compatibility and frequency flexibility for higher current capability and broader input range - making ISL97519IUZ-TK optimal for precision, space-constrained display bias where 1% accuracy and 1.1mm profile are critical.
Availability
ISL97519IUZ-TK is available at Aetrix Electronics and suitable for TFT-LCD displays, DSL modems, and GSM/CDMA handset designs requiring stable component supply, long-term availability, and RoHS-compliant packaging.
Supply support for ISL97519IUZ-TK 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 computing, communications, and consumer electronics.
The ISL97519IUZ-TK belongs to Intersil's high-efficiency DC-DC boost regulator product line, engineered specifically for portable display power applications demanding precision, small size, and wide input voltage operation.
FAQ
What is the guaranteed minimum current limit for ISL97519IUZ-TK?
The ISL97519IUZ-TK guarantees a minimum peak switch current limit of 1.7A, with a typical value of 2.0A and maximum of 2.0A. This limit determines the maximum achievable output current based on input/output voltage ratio, inductor value, and switching frequency - verified across -40°C to +105°C.
Does ISL97519IUZ-TK support true shutdown with near-zero current draw?
Yes, ISL97519IUZ-TK draws less than 1µA when the EN pin is pulled low, placing the device in full shutdown mode. This ultra-low quiescent current preserves battery life in portable equipment during display-off or sleep states, and is specified over the full -40°C to +105°C temperature range.
What is the nominal feedback reference voltage for ISL97519IUZ-TK?
The ISL97519IUZ-TK has a nominal feedback reference voltage of 1.294V, with guaranteed min/max of 1.276V and 1.307V over -40°C to +105°C. This precise reference enables accurate output voltage setting using standard resistor dividers - critical for maintaining TFT-LCD panel bias stability.
Can ISL97519IUZ-TK operate with input voltage as low as 2.3V?
Yes, ISL97519IUZ-TK operates down to 2.3V input supply, with VDD UVLO turn-on threshold specified at 2.2V ±0.1V and 100mV hysteresis. This enables reliable startup and regulation from deeply discharged single-cell lithium batteries or low-voltage system rails.
Is ISL97519IUZ-TK pin-compatible with ISL97519A?
Yes, ISL97519IUZ-TK is pin-compatible and functionally identical to ISL97519A, which is Intersil's recommended replacement. The ISL97519A retains the same 8-lead MSOP package, pinout, electrical specifications, and thermal characteristics - allowing drop-in replacement without PCB changes.
ISL97519IUZ-TK 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:
- 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:
- 1.5A (Switch)
- Frequency - Switching:
- 620kHz, 1.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ISL97519IUZ-TK FAQ
1.How can I place an order for ISL97519IUZ-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97519IUZ-TK 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 ISL97519IUZ-TK reliable?
The price and inventory of ISL97519IUZ-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97519IUZ-TK is usually 5 days.
3.What payment methods are accepted for ISL97519IUZ-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97519IUZ-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97519IUZ-TK?
ISL97519IUZ-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97519IUZ-TK 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 ISL97519IUZ-TK?
For technical support, including ISL97519IUZ-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97519IUZ-TK requirements.
6.How does Aetrix verify that ISL97519IUZ-TK is sourced from the original manufacturer or authorized distributors?
All ISL97519IUZ-TK 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 ISL97519IUZ-TK meets industry standards.
7.What is the process for return or replacement of ISL97519IUZ-TK?
All ISL97519IUZ-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL97519IUZ-TK, 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 ISL97519IUZ-TK part is unused and in its original packaging.
Return procedure for ISL97519IUZ-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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