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Renesas ISL9111EH50Z-T7A
- Part No.:
- ISL9111EH50Z-T7A
- Manufacturer:
- Renesas
- Package:
- SOT-23-6
- Datasheet:
-
ISL9111EH50Z-T7A.pdf
- Description:
- IC REG BOOST 5V 800MA 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:546
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Product details
Overview
ISL9111EH50Z-T7A from Renesas (formerly Intersil) is a low-input-voltage, high-efficiency synchronous boost converter with integrated 1A N-channel and P-channel MOSFETs, delivering fixed 5.0V output from single/dual-cell alkaline/NiMH batteries. It starts up at 0.8V, supports up to 5.25V output, achieves 97% peak efficiency, and operates at 1.2MHz for compact 4.7µH inductor + ceramic capacitor designs. Used in portable HDMI, USB-OTG, and Bluetooth headsets.
For engineers reviewing the ISL9111EH50Z-T7A datasheet, ISL9111EH50Z-T7A pinout, ISL9111EH50Z-T7A application, or ISL9111EH50Z-T7A equivalent, key selection criteria include minimum startup voltage (0.8V), UVLO protection (0.7V shutdown), FAULT pin monitoring, 6-lead SOT-23 package constraints, and compatibility with 0.5–5.25V input ranges in battery-powered systems.
Technical Context
The ISL9111EH50Z-T7A implements peak current-mode PWM control with internal slope compensation and a 1.2MHz oscillator, enabling stable regulation across wide input/output ratios. Its dual-MOSFET synchronous rectification eliminates external Schottky diodes, reducing conduction loss and improving light-load efficiency via skip mode.
UVLO is enabled (0.7V cutoff), distinguishing it from ISL9111A variants; fault reporting includes short-circuit, overtemperature (150°C), and output undervoltage detection, all signaled via open-drain FAULT pin. Internal voltage divider fixes VOUT = 5.0V ±100mV at 50mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±100mV - tightly regulated for USB-OTG host power and HDMI sink logic rails. |
| Startup Voltage | 0.8V typical - enables operation from deeply discharged single-cell alkaline batteries. |
| UVLO Threshold | 0.7V - protects rechargeable cells from over-discharge by disabling output before irreversible damage. |
| Switching Frequency | 1.2MHz ±200kHz - allows use of miniature 4.7µH inductors and low-ESR ceramic capacitors. |
| Peak Efficiency | 97% - achieved at mid-load (e.g., 100mA @ VIN=1.8V), minimizing thermal stress in sealed enclosures. |
| Quiescent Current | 20µA typical - extends battery life in standby modes of wireless peripherals and medical sensors. |
| Max Output Current | 240mA @ VIN=1.8V, VOUT=3.3V - scaled down at 5V output but sufficient for low-power digital subsystems. |
| Fault Reporting | Open-drain FAULT pin - asserts low on short circuit, overtemperature, or output undervoltage (VOUT < 90% nominal). |
Pinout & Package
ISL9111EH50Z-T7A is housed in a Pb-free 6-lead SOT-23 package (JEDEC MO-178AB, pkg drawing P6.064), optimized for space-constrained portable PCBs with thermal resistance θJA = 146°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switching node | Connects to inductor's switch-side terminal; carries high di/dt ripple current - requires short, wide trace routing. |
| 2 GND | Power ground | Primary return path for input/output capacitors and MOSFET sources - must connect to solid ground plane. |
| 3 EN | Enable input | Active-high logic control (0.8×VIN high threshold); pulls device into <1µA shutdown when low. |
| 4 FAULT | Fault indicator | Open-drain output; sinks 10mA when asserted low during short circuit, OTP, or undervoltage events. |
| 5 VOUT | Regulated output | Delivers fixed 5.0V to load; requires 4.7µF ceramic capacitor placed adjacent to pin and GND. |
| 6 VIN | Input supply | Accepts 0.8–5.05V; connects to 4.7µF input capacitor and battery/analog rail - sensitive to trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-channel MOSFETs (rDS(on) = 0.2Ω / 0.35Ω) eliminate Schottky losses, enabling >90% efficiency at light loads. |
| Skip mode operation | Reduces quiescent current to 20µA under light load by gating PWM cycles - critical for multi-week battery life in remote controls. |
| Output disconnect | Internal body-diode polarity reversal during shutdown blocks reverse current flow - prevents battery drain when system is off. |
| Digital soft-start | Linear ramp-up limits inrush current to ~200mA during startup, avoiding input voltage sag in weak battery conditions. |
| Thermal shutdown | 150°C trip with 25°C hysteresis - protects IC during sustained overload or poor heatsinking without external components. |
Applications
| USB-OTG Host Power | Bluetooth Headset Audio |
|---|---|
Use Scenario: Powers USB OTG host controller and peripheral interface from single AA/AAA cell in portable media adapters. IC Role / Device Role / Timing Role: Primary 5V rail generator with fast transient response to handle USB enumeration bursts. Use Value: Enables full-speed USB 2.0 operation without external LDO or charge pump, reducing BOM count by one active component. |
Use Scenario: Supplies clean 5V to Bluetooth radio IC and DAC in compact wireless earbuds. IC Role / Device Role / Timing Role: High-efficiency boost stage preceding low-noise LDO for analog audio subsystem. Use Value: Extends talk time by 18% vs. discrete boost + LDO solutions due to 97% peak efficiency and 20µA quiescent current. |
| Portable HDMI Sink | Wireless Keyboard/Mouse |
Use Scenario: Generates stable 5V for HDMI receiver IC and level translators in pocket-sized display adapters. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter supporting hot-plug detection and EDID communication timing. Use Value: Meets HDMI spec's 5V±5% tolerance with ±100mV accuracy and <1.5% line/load regulation - no calibration required. |
Use Scenario: Provides regulated 5V to RF transceiver and microcontroller in ultra-thin keyboard/mouse PCBs. IC Role / Device Role / Timing Role: Low-quiescent-current boost regulator enabling multi-month operation on single alkaline cell. Use Value: Achieves 0.8V startup and 0.7V UVLO cutoff - extracts 12% more usable energy from AA battery vs. competing 1.0V-start devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS61200DRCT | 0.3V startup, no UVLO, adjustable output only - requires external feedback resistors and lacks FAULT pin. | Better for non-rechargeable primary cells; unsuitable where battery protection is mandatory. | Select if lowest possible startup voltage is critical and UVLO is unnecessary. |
| Analog Devices ADP5070ARMZ-R7 | Higher 2.05MHz switching frequency, dual-output capability, but larger 8-lead MSOP package and 1.5V min input. | Targets dual-rail systems (e.g., op-amp bias); incompatible with sub-1V battery start-up requirements. | Choose when generating both positive and negative rails is needed and board space permits larger footprint. |
Compared with TPS61200DRCT and ADP5070ARMZ-R7, ISL9111EH50Z-T7A uniquely combines fixed 5V output, 0.8V startup, integrated UVLO, and FAULT reporting in a 6-lead SOT-23 - making it optimal for cost-sensitive, space-constrained, rechargeable-battery-powered USB/HDMI accessories.
Availability
ISL9111EH50Z-T7A is available at Aetrix Electronics and suitable for portable HDMI adapters, USB-OTG host devices, and Bluetooth audio peripherals requiring stable component supply across production lifecycles.
Supply support for ISL9111EH50Z-T7A 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 Corporation (acquired Intersil in 2017) is a global leader in microcontrollers, analog, and power management ICs, serving automotive, industrial, and consumer markets with high-reliability semiconductor solutions.
The ISL9111 series was designed specifically for ultra-low-voltage battery-powered applications - prioritizing startup capability below 1V, minimal quiescent current, and integrated protection to extend runtime in portable medical, audio, and connectivity devices.
FAQ
What is the minimum input voltage required for ISL9111EH50Z-T7A to start switching?
The ISL9111EH50Z-T7A has a typical minimum startup voltage of 0.8V, verified per FN7602 Rev.4.00 datasheet Section "Electrical Specifications". This allows reliable operation from nearly depleted single-cell alkaline or NiMH batteries. The device remains functional down to 0.7V input before UVLO triggers shutdown to protect rechargeable cells.
Does ISL9111EH50Z-T7A support output disconnect during shutdown?
Yes, ISL9111EH50Z-T7A provides true output disconnect during shutdown: when EN is pulled low, internal circuitry reverses the P-channel MOSFET body diode polarity, blocking reverse current flow from VOUT to VIN. This prevents battery drain in standby - confirmed in the "Synchronous Rectifier" section of FN7602 Rev.4.00, Page 8.
What protection features does ISL9111EH50Z-T7A include?
ISL9111EH50Z-T7A integrates overtemperature protection (150°C trip), short-circuit protection (VOUT < VIN detection), and output undervoltage lockout (VOUT < 90% nominal). All faults assert the open-drain FAULT pin low - detailed in Table 1, Page 10 of FN7602 Rev.4.00. OVP is excluded in fixed-output versions like ISL9111EH50Z-T7A.
Can ISL9111EH50Z-T7A be used with a 3.3V output requirement?
No - ISL9111EH50Z-T7A is a fixed 5.0V output variant. For 3.3V, use ISL9111EH33Z-T7A (same package, same UVLO, identical pinout). The output voltage is set internally; no external resistors can adjust it. This is explicitly stated in the "Ordering Information" table (Page 5) and "Fixed Output Voltage" section (Page 9) of FN7602 Rev.4.00.
What is the maximum recommended output current for ISL9111EH50Z-T7A at 5V output?
While ISL9111EH50Z-T7A delivers 240mA at 3.3V output from 1.8V input, its practical 5V output current is lower due to reduced duty cycle headroom. Per Figure 11 (Page 11), maximum continuous output at VOUT=5.0V is ~120mA with VIN ≥ 2.4V. At VIN=1.8V, output current drops to ~60mA - values confirmed in the "Typical Characteristics" section of FN7602 Rev.4.00.
ISL9111EH50Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 4.8V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SOT
ISL9111EH50Z-T7A FAQ
1.How can I place an order for ISL9111EH50Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9111EH50Z-T7A 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 ISL9111EH50Z-T7A reliable?
The price and inventory of ISL9111EH50Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9111EH50Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL9111EH50Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9111EH50Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9111EH50Z-T7A?
ISL9111EH50Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9111EH50Z-T7A 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 ISL9111EH50Z-T7A?
For technical support, including ISL9111EH50Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9111EH50Z-T7A requirements.
6.How does Aetrix verify that ISL9111EH50Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9111EH50Z-T7A 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 ISL9111EH50Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL9111EH50Z-T7A?
All ISL9111EH50Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9111EH50Z-T7A, 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 ISL9111EH50Z-T7A part is unused and in its original packaging.
Return procedure for ISL9111EH50Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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