My Inquiry
My Account
Renesas ISL97519AIUZ
- Part No.:
- ISL97519AIUZ
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL97519AIUZ.pdf
- Description:
- IC REG BOOST ADJ 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,537
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL97519AIUZ from Intersil is a high-efficiency, constant-frequency PWM step-up regulator with integrated 2.0A/200mΩ MOSFET, 600kHz/1.2MHz selectable switching frequency, 2.3V–5.5V input range, and up to 25V output capability. It delivers >90% efficiency at 1A load and features adjustable soft-start, internal thermal protection, and operation across –40°C to +85°C - used in TFT-LCD bias supplies and portable display power rails.
For engineers reviewing the ISL97519AIUZ datasheet, ISL97519AIUZ pinout, ISL97519AIUZ application, or ISL97519AIUZ equivalent, key selection considerations include its dual-frequency PWM control, external compensation flexibility for ceramic output capacitors, shutdown current <1µA, and 8-lead MSOP package with 1.1mm max height.
Technical Context
The ISL97519AIUZ employs current-mode PWM control with an internal transconductance error amplifier (70–150 µS) and external RC compensation network on the COMP pin. Its dual-frequency selection (620kHz/1.25MHz) is set by FSEL logic level, directly affecting inductor size and transient response trade-offs.
It integrates a 2.0A peak-current-limited N-channel MOSFET with 200mΩ rDS(ON), supports adjustable soft-start via SS pin capacitor (3µA charge current), and includes VDD UVLO (2.1V on-threshold, 140mV hysteresis) and overtemperature shutdown at 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3V to 5.5V - supports single-cell Li-ion, Li-poly, or 3.3V/5V rail inputs without pre-regulation. |
| Output Voltage Range | 1.1×VIN up to 25V - enables TFT-LCD gate drivers and LED backlight bias with external resistor divider. |
| Switching Frequency | Selectable 620kHz or 1.25MHz - determines inductor size (e.g., 10µH typical) and EMI profile. |
| Peak Switch Current Limit | 1.5A min (VDD > 2.8V) - sets maximum deliverable output current under boost duty constraints. |
| Feedback Reference Voltage | 1.24V ±1.1% - defines output regulation accuracy via FB resistor divider (R1/R2). |
| Shutdown Quiescent Current | <1µA - enables ultra-low-power standby in battery-powered handheld devices. |
| Package | 8-lead MSOP, 1.1mm max height - surface-mount compatible with space-constrained portable PCBs. |
Pinout & Package
ISL97519AIUZ 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 stability and transient response for ceramic output caps. |
| 2 - FB | Voltage feedback input | Senses divided output voltage; internal 1.24V reference enables precise output regulation. |
| 3 - EN | Enable/shutdown control | Active-high logic; pulling low disables switching and reduces supply current to <1µA. |
| 4 - GND | Analog and power ground | Common return for feedback, control, and power paths; requires low-impedance PCB layout. |
| 5 - LX | Power switch node | Drain of internal MOSFET; connects to inductor and Schottky diode anode in boost topology. |
| 6 - VDD | Analog supply input | Powers internal circuitry; requires 0.1µF bypass capacitor close to pin for noise immunity. |
| 7 - FSEL | Frequency select input | Logic-low → 620kHz; logic-high/VDD → 1.25MHz - configures switching speed without external clock. |
| 8 - SS | Soft-start control | Capacitor-connected pin; linear 3µA charge controls current limit ramp and output voltage rise time. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.0A/200mΩ MOSFET | Eliminates external high-side switch; reduces BOM count and layout area for compact boost designs. |
| Dual-frequency PWM selection | Enables optimization between small magnetics (1.25MHz) and lower EMI/losses (620kHz) per application need. |
| External compensation (COMP pin) | Allows tuning of phase margin and load transient response using standard RC components - supports low-ESR ceramics. |
| Adjustable soft-start (SS pin) | Prevents inrush current damage by linearly ramping current limit; capacitor value sets start-up duration (e.g., 27nF ≈ 540µs). |
| Thermal shutdown & UVLO | Protects against overtemperature (150°C trip) and brownout (2.1V VDD turn-on with 140mV hysteresis). |
Applications
| TFT-LCD Display Power | Digital Camera Backlight |
|---|---|
Use Scenario: Generating 12–20V bias for TFT-LCD source/gate drivers in handheld tablets and industrial HMIs. IC Role / Device Role / Timing Role: Primary DC-DC boost converter supplying regulated high-voltage rail from 3.3V/5V system bus. Use Value: Delivers >90% efficiency at 1A load and supports fast transient response required during display frame updates. | Use Scenario: Driving white LED strings in compact digital cameras requiring stable 15–25V from single Li-ion cell. IC Role / Device Role / Timing Role: Constant-frequency PWM boost controller with adjustable soft-start to prevent LED current surge at power-on. Use Value: 1.25MHz operation allows use of sub-3mm × 3mm inductors; <1µA shutdown current extends battery life in standby mode. |
| GSM/CDMA Phone RF Power | PCMCIA Card Interface Supply |
Use Scenario: Providing clean 5–9V auxiliary supply for RF power amplifiers in legacy 2G/3G handsets operating down to 2.3V input. IC Role / Device Role / Timing Role: High-efficiency step-up regulator with tight line/load regulation (0.2%/0.3%) for sensitive analog RF stages. Use Value: Internal 200mΩ MOSFET and low quiescent current enable reliable operation across full battery discharge curve. | Use Scenario: Generating isolated 12V rail for PCMCIA card interface logic and level-shifting circuits in portable laptops. IC Role / Device Role / Timing Role: Compact, thermally robust boost converter mounted directly on card-edge connector PCBs. Use Value: 1.1mm max height MSOP package fits constrained card-edge space; thermal shutdown prevents overheating during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 2.5A switch current, fixed 1.2MHz frequency, no FSEL pin; requires external compensation. | Better suited for >1A continuous loads; lacks dual-frequency flexibility and integrated soft-start control. | Choose TPS61088RHLR when higher output current and smaller inductors are prioritized over frequency configurability. |
| MAX17062ETA+ | Fixed 1.2MHz, 1.5A switch, integrated Schottky, no COMP pin; only 1.24V reference like ISL97519AIUZ. | Reduces external component count but sacrifices loop tuning and soft-start adjustability. | Choose MAX17062ETA+ for simplified layout where compensation and soft-start customization are unnecessary. |
Compared with TPS61088RHLR and MAX17062ETA+, the ISL97519AIUZ uniquely offers user-selectable 620kHz/1.25MHz operation, external compensation for ceramic-cap stability, and programmable soft-start - making it optimal for space-constrained, efficiency-critical portable display power where design flexibility matters.
Availability
ISL97519AIUZ is available at Aetrix Electronics and suitable for TFT-LCD displays, digital cameras, and GSM/CDMA phones requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for ISL97519AIUZ 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 mixed-signal ICs for power management, precision analog, and interface applications.
The ISL97519AIUZ belongs to Intersil's high-frequency boost regulator product line, engineered specifically for portable display and battery-powered equipment demanding high efficiency, small footprint, and robust thermal behavior.
FAQ
What is the maximum output voltage supported by the ISL97519AIUZ?
The ISL97519AIUZ supports output voltages up to 25V, limited by its absolute maximum LX-to-GND rating of 27V. The actual achievable output depends on input voltage, duty cycle (max 92% at 600kHz), and external component selection - e.g., with 3.3V input, 12V output is typical per datasheet curves. Output is set via FB resistor divider referencing the internal 1.24V bandgap.
How does the FSEL pin affect switching frequency in the ISL97519AIUZ?
The FSEL pin on the ISL97519AIUZ selects between two fixed PWM frequencies: grounding FSEL sets 620kHz (±20%), while connecting it to VDD or logic-high sets 1.25MHz (±20%). This selection directly impacts inductor size, output ripple, and transient response - no external clock or configuration register is required.
Can the ISL97519AIUZ operate from a single Li-ion battery?
Yes, the ISL97519AIUZ operates from 2.3V to 5.5V input, covering the full discharge range of a single Li-ion or Li-polymer cell (2.7V–4.2V nominal). Its 2.1V VDD UVLO with 140mV hysteresis ensures reliable startup even at end-of-discharge, and <1µA shutdown current minimizes battery drain.
What is the purpose of the COMP pin on the ISL97519AIUZ?
The COMP pin on the ISL97519AIUZ is the output of the internal transconductance error amplifier. Connecting an RC network (e.g., 1kΩ + 4.7nF) from COMP to GND sets loop compensation - enabling stable regulation with low-ESR ceramic output capacitors and optimizing transient response for varying load conditions.
Does the ISL97519AIUZ include thermal protection?
Yes, the ISL97519AIUZ includes internal thermal shutdown that activates at approximately 150°C junction temperature. When triggered, the device halts switching and enters a safe state until temperature falls below the hysteresis threshold. This protects both the IC and surrounding components during overload or poor heatsinking conditions.
ISL97519AIUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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):
- 5V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 1.5A (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
ISL97519AIUZ FAQ
1.How can I place an order for ISL97519AIUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97519AIUZ 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 ISL97519AIUZ reliable?
The price and inventory of ISL97519AIUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97519AIUZ is usually 5 days.
3.What payment methods are accepted for ISL97519AIUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97519AIUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97519AIUZ?
ISL97519AIUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97519AIUZ 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 ISL97519AIUZ?
For technical support, including ISL97519AIUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97519AIUZ requirements.
6.How does Aetrix verify that ISL97519AIUZ is sourced from the original manufacturer or authorized distributors?
All ISL97519AIUZ 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 ISL97519AIUZ meets industry standards.
7.What is the process for return or replacement of ISL97519AIUZ?
All ISL97519AIUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL97519AIUZ, 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 ISL97519AIUZ part is unused and in its original packaging.
Return procedure for ISL97519AIUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL97519AIUZ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
