My Inquiry
My Account
Renesas ISL97656IRTZ-TK
- Part No.:
- ISL97656IRTZ-TK
- Manufacturer:
- Renesas
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
ISL97656IRTZ-TK.pdf
- Description:
- IC REG BOOST ADJ 3.8A 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:16,649
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL97656IRTZ-TK from Intersil is a high-frequency, non-synchronous step-up DC/DC regulator with an integrated 4.0A/120mΩ low-side MOSFET, 640kHz or 1.22MHz selectable switching frequency, 2.2V–6.0V input range, and 1.1×VIN to 24V output range-designed for TFT-LCD bias supplies in portable displays.
For engineers reviewing the ISL97656IRTZ-TK datasheet, ISL97656IRTZ-TK pinout, ISL97656IRTZ-TK application, or ISL97656IRTZ-TK equivalent, key selection criteria include peak current limit (4.0A), feedback reference voltage (1.24V), shutdown current (<1µA), thermal protection (150°C), and TDFN-10 package compatibility with space-constrained PCB layouts.
Technical Context
The ISL97656IRTZ-TK uses current-mode PWM control with internal oscillator and transconductance error amplifier for stable loop compensation. Its dual-frequency selection (640kHz/1.22MHz) enables trade-offs between inductor size and transient response speed.
It integrates a 4.0A low-side MOSFET with 120mΩ rDS(ON) at VIN = 2.7V, supports adjustable soft-start via external capacitor on SS pin, and features internal thermal shutdown at 150°C. The COMP pin allows full external RC network tuning of voltage-loop stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 6.0V - supports single-cell Li-ion (2.7–4.2V) and dual-cell alkaline/NiMH (2.2–4.8V) inputs without pre-regulation. |
| Output Voltage Range | 1.1×VIN to 24V - enables programmable bias generation for TFT-LCD gate drivers and LED strings up to 24V. |
| Switching Frequency | 640kHz or 1.22MHz - selectable via FREQ pin; higher frequency reduces inductor size (e.g., 2.2µH vs. 10µH) and improves load transient response. |
| Peak Switch Current Limit | 3.8A (min) to 5.1A (max) - sets maximum deliverable output current under worst-case conditions; guarantees ≥3.8A across temperature. |
| Feedback Reference Voltage | 1.24V (±20mV) - defines precision output regulation point; used with resistor divider to set VOUT = 1.24V × (1 + R1/R2). |
| Shutdown Supply Current | <1µA - ensures ultra-low quiescent power in battery-powered standby modes, extending system sleep time. |
| Thermal Shutdown Threshold | 150°C - protects against sustained overload or poor heatsinking; device resumes operation after junction cools below hysteresis threshold. |
Pinout & Package
ISL97656IRTZ-TK is housed in a 10-lead Thin Dual Flat No-lead (TDFN) package (3.0mm × 3.0mm × 0.8mm max height) with exposed thermal pad for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Error amplifier output | Connects external RC network to set loop compensation poles/zeros; critical for stability with ceramic output capacitors. |
| 2 (FB) | Voltage feedback input | Senses divided output voltage; internal 1.24V reference enables precise output regulation independent of input or load variation. |
| 3 (EN) | Enable control input | Logic-level active-high enable; pulls device into <1µA shutdown when low; supports system-level power sequencing. |
| 4,5 (GND) | Power ground return | Dual GND pins minimize ground impedance; must be connected to low-impedance PCB ground plane beneath exposed pad. |
| 6,7 (LX) | Switch node | Drain connection of internal 4.0A MOSFET; carries high di/dt switching current; requires short, wide copper pour to reduce EMI. |
| 8 (VIN) | Analog input supply | Primary power input (2.2–6.0V); requires local 0.1µF ceramic bypass capacitor placed within 2mm of pin. |
| 9 (FREQ) | Frequency select | Ground = 640kHz; tied to VIN = 1.22MHz - no external components needed for frequency configuration. |
| 10 (SS) | Soft-start control | Internal 4.5µA current source charges external capacitor to ramp output voltage linearly, limiting inrush current during startup. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4.0A/120mΩ low-side MOSFET | Eliminates external switch and driver; reduces BOM count and layout area while maintaining >90% efficiency at 1A load. |
| Selectable 640kHz / 1.22MHz switching | Enables optimization of magnetic component size and transient performance without changing IC or layout. |
| Adjustable soft-start via SS pin | External capacitor sets output voltage slew rate, preventing overshoot and reducing stress on downstream capacitors and loads. |
| Internal thermal protection | Automatically disables switching at 150°C junction temperature; prevents permanent damage during overloads or poor thermal design. |
| 0.8mm max height TDFN-10 package | Supports ultra-thin portable designs (e.g., handheld displays, digital cameras) where Z-height is constrained to <1.1mm. |
Applications
| TFT-LCD Display Bias Supply | Portable Digital Camera Power |
|---|---|
|
Use Scenario: Generating 18V gate-on and –10V gate-off voltages for active-matrix LCD panels in smartphones and tablets. IC Role / Device Role / Timing Role: Primary boost converter providing regulated high-voltage rails from single-cell Li-ion battery (3.0–4.2V). Use Value: Integrated 4.0A switch delivers sufficient current for multi-rail charge pumps; 1.22MHz mode enables use of 2.2µH inductors, saving >40% board area versus 640kHz designs. |
Use Scenario: Powering CCD/CMOS image sensor bias and flash LED drivers in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency step-up regulator converting 3.3V system rail to 5V/9V for sensor analog front-end and autofocus motors. Use Value: <1µA shutdown current extends battery life in standby; adjustable soft-start prevents sensor reset glitches during power-up. |
| DSL Modem Line Driver Supply | PCMCIA Card Interface Power |
|
Use Scenario: Providing isolated 12V supply for line driver amplifiers in ADSL/VDSL modems operating from 3.3V logic rail. IC Role / Device Role / Timing Role: Compact, high-frequency boost stage delivering stable 12V output with tight load regulation (<0.3%) across 10–200mA load range. Use Value: External compensation (COMP pin) enables robust regulation under dynamic line loading; thermal shutdown prevents latch-up during surge events. |
Use Scenario: Generating 5V or 12V auxiliary power for PCMCIA Type II card peripherals (e.g., wireless adapters, storage controllers). IC Role / Device Role / Timing Role: Standalone boost regulator enabling hot-plug compatible power delivery with controlled ramp-up and low-noise operation. Use Value: 640kHz/1.22MHz flexibility allows matching inductor availability; TDFN-10 footprint fits narrow PCMCIA card edge space constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Synchronous topology; 10A switch; fixed 500kHz/2.2MHz; no FREQ pin; higher IQ (20µA in shutdown) | Better efficiency above 1.5A; supports wider VIN (2.7–12V); not suitable for sub-2.7V inputs like single alkaline cells | Choose TPS61088RHLR for higher output current (>2A) or synchronous efficiency needs; ISL97656IRTZ-TK preferred for 2.2V start-up and smaller solution size at ≤1.5A. |
| MAX17065ETA+ | Non-synchronous; 3A switch; fixed 1.2MHz; no soft-start adjustment; 1.25V FB reference; 10-pin TDFN same footprint | Limited output voltage headroom (up to 18V); lacks frequency selection and external compensation flexibility | Choose MAX17065ETA+ only if 3A current limit suffices and design can accept fixed 1.2MHz + no COMP tuning; ISL97656IRTZ-TK offers broader VOUT range and design adaptability. |
Compared with TPS61088RHLR and MAX17065ETA+, the ISL97656IRTZ-TK uniquely supports 2.2V start-up, dual-frequency selection, and full external loop compensation-making it optimal for space-constrained, low-input-voltage TFT-LCD and portable imaging applications requiring design flexibility and thermal robustness.
Availability
ISL97656IRTZ-TK is available at Aetrix Electronics and suitable for TFT-LCD display bias supplies, portable digital camera power systems, and DSL modem line driver circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL97656IRTZ-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) is a U.S.-based analog and power management IC designer known for high-performance DC/DC converters, precision amplifiers, and interface solutions.
The ISL97656IRTZ-TK belongs to Intersil's high-efficiency boost regulator product line, engineered specifically for portable display and imaging applications demanding compact size, low quiescent current, and reliable high-voltage bias generation.
FAQ
What is the minimum input voltage required for ISL97656IRTZ-TK to start switching?
The ISL97656IRTZ-TK has a VIN UVLO rising threshold of 2.10V (typical) with 50mV hysteresis, allowing reliable startup from 2.2V sources such as single alkaline or NiMH cells. Below 2.00V, the device remains in undervoltage lockout and draws <1µA, ensuring no erratic behavior during brown-out conditions. This makes ISL97656IRTZ-TK suitable for legacy battery-powered portable equipment where deep discharge tolerance is required.
Can ISL97656IRTZ-TK generate output voltages above 24V?
No-ISL97656IRTZ-TK is specified for outputs up to 24V per absolute maximum ratings (LX to GND ≤ 26V). For >24V applications, Intersil's datasheet explicitly recommends using an external cascaded N-channel MOSFET as shown in Figure 16, where the ISL97656IRTZ-TK drives the gate of the external FET. Direct operation beyond 24V risks LX pin overstress and permanent failure; ISL97656IRTZ-TK must not be used outside its rated voltage limits.
How does the FREQ pin affect inductor selection for ISL97656IRTZ-TK?
When FREQ = GND (640kHz), recommended inductors range from 4.7µH to 10µH; when FREQ = VIN (1.22MHz), 2.2µH to 4.7µH is typical. Higher frequency reduces required inductance by ~2×, enabling smaller magnetics and lower core losses-but increases AC resistance losses and EMI filtering demands. The ISL97656IRTZ-TK's dual-frequency capability lets designers optimize for size (1.22MHz) or efficiency (640kHz) without changing ICs.
What is the purpose of the COMP pin on ISL97656IRTZ-TK, and how is it configured?
The COMP pin is the output of the internal transconductance error amplifier and serves as the control node for external loop compensation. It requires a series RC network (e.g., 1kΩ + 4.7nF) from COMP to GND to set dominant pole and zero for stable voltage-loop response. This flexibility allows tuning for different output capacitors (ceramic vs. tantalum) and load dynamics-unlike fixed-compensation regulators. Proper COMP network design is essential to prevent oscillation or sluggish transient response in the ISL97656IRTZ-TK.
Does ISL97656IRTZ-TK require an external Schottky diode, and what are its key specifications?
Yes-ISL97656IRTZ-TK is a non-synchronous boost regulator and requires an external Schottky diode. Per datasheet guidance, the diode must handle ≥4.0A peak current, have reverse breakdown >24V (e.g., 30V rating), low forward voltage (<0.6V @ 2A), and fast recovery (<50ns). Recommended parts include Vishay VSK320 or ON Semiconductor MBR2030CT. Omitting or underspecifying the diode causes excessive conduction loss, thermal runaway, and potential ISL97656IRTZ-TK failure.
ISL97656IRTZ-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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):
- 2.2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 3.8A (Switch)
- Frequency - Switching:
- 640kHz, 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN-EP (3x3)
ISL97656IRTZ-TK FAQ
1.How can I place an order for ISL97656IRTZ-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL97656IRTZ-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 ISL97656IRTZ-TK reliable?
The price and inventory of ISL97656IRTZ-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL97656IRTZ-TK is usually 5 days.
3.What payment methods are accepted for ISL97656IRTZ-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL97656IRTZ-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL97656IRTZ-TK?
ISL97656IRTZ-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL97656IRTZ-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 ISL97656IRTZ-TK?
For technical support, including ISL97656IRTZ-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL97656IRTZ-TK requirements.
6.How does Aetrix verify that ISL97656IRTZ-TK is sourced from the original manufacturer or authorized distributors?
All ISL97656IRTZ-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 ISL97656IRTZ-TK meets industry standards.
7.What is the process for return or replacement of ISL97656IRTZ-TK?
All ISL97656IRTZ-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL97656IRTZ-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 ISL97656IRTZ-TK part is unused and in its original packaging.
Return procedure for ISL97656IRTZ-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL97656IRTZ-TK 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…
