My Inquiry
My Account
Renesas ISL9111AEH30Z-T7A
- Part No.:
- ISL9111AEH30Z-T7A
- Manufacturer:
- Renesas
- Package:
- SOT-23-6
- Datasheet:
-
ISL9111AEH30Z-T7A.pdf
- Description:
- IC REG BOOST 3V 800MA 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:1,051
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL9111AEH30Z-T7A from Renesas (formerly Intersil) is a low-input-voltage, high-efficiency synchronous boost converter optimized for single-cell alkaline/NiMH battery-powered devices. It delivers fixed 3.0V output with up to 100mA load at 0.9V input, features 0.6V minimum start-up voltage, 1.2MHz switching frequency, and integrated N- and P-channel MOSFETs with 0.2Ω/0.35Ω on-resistance. It powers portable medical sensors and Bluetooth headsets requiring ultra-low-voltage operation.
For engineers reviewing the ISL9111AEH30Z-T7A datasheet, ISL9111AEH30Z-T7A pinout, ISL9111AEH30Z-T7A application, or ISL9111AEH30Z-T7A equivalent, key selection criteria include minimum operating voltage (0.5V), fault reporting via FAULT pin, output disconnect during shutdown, skip-mode efficiency optimization, and compatibility with 4.7µH inductors and ceramic capacitors in space-constrained designs.
Technical Context
The ISL9111AEH30Z-T7A implements peak current-mode PWM control with internal slope compensation and a 1.2MHz oscillator. Its dual-MOSFET synchronous rectification replaces Schottky diodes to achieve >90% efficiency, while digital soft-start limits inrush current and enables stable startup from 0.6V.
Unlike the ISL9111 variant, the ISL9111A disables UVLO to maximize non-rechargeable battery depletion-enabling operation down to 0.5V after startup. Fault monitoring activates 2ms post-enable and reports over-temperature (150°C), short-circuit, and output regulation loss via open-drain FAULT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±100mV - ensures stable rail for 3.0V logic and analog circuitry without external feedback resistors. |
| Min Start-up Voltage | 0.6V (typical) - enables power-up from nearly depleted single-cell alkaline batteries. |
| Min Operating Voltage | 0.5V (typical) - sustains regulation until battery is fully exhausted, critical for disposable medical devices. |
| Switching Frequency | 1.2MHz (typical) - permits use of compact 4.7µH inductors and low-ESR ceramic capacitors, minimizing PCB area. |
| Quiescent Current | 20µA (typical) - extends battery life in standby mode for always-on wearables and remote sensors. |
| Peak Switch Current | 1.0A (typical) - supports transient loads up to 100mA at 3.0V output from 0.9V input with margin. |
| Thermal Shutdown | 150°C threshold with 25°C hysteresis - protects against sustained overload or poor heatsinking in sealed enclosures. |
Pinout & Package
ISL9111AEH30Z-T7A is housed in a Pb-free 6-lead SOT-23 package (JEDEC MO-178AB, pkg drawing P6.064), with 1.3mm height and 0.95mm pitch. Thermal resistance θJA = 146°C/W enables operation up to +85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switching node | Connects to inductor's switch-side terminal; carries high di/dt pulses-requires short, wide trace routing to minimize EMI. |
| 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, 0.2×VIN low); pulls device into <1µA shutdown state when low. |
| 4 FAULT | Fault indicator | Open-drain output pulled low during OTP, short-circuit, or output undervoltage-requires external pull-up for microcontroller monitoring. |
| 5 VOUT | Regulated output | Delivers fixed 3.0V to load; connects directly to output capacitor and downstream circuitry. |
| 6 VIN | Input supply | Accepts 0.5–3.0V input; requires local 4.7µF ceramic capacitor between VIN and GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated N- and P-channel MOSFETs eliminate Schottky losses, enabling >90% efficiency at light loads and reducing thermal stress. |
| Output disconnect | Internal circuitry reverses P-MOSFET body diode polarity during shutdown, fully isolating battery from load to prevent deep discharge. |
| Skip mode operation | Reduces quiescent current to 20µA under light load by gating PWM cycles-improves battery runtime in intermittent-sensing applications. |
| Digital soft-start | Linear ramp limits inrush current during enable, preventing input voltage sag and ensuring reliable startup from weak batteries. |
| Fault protection suite | Monitors over-temperature (150°C), short-circuit (VOUT < VIN), and output regulation loss-asserts FAULT pin within 2ms of detection. |
Applications
| Portable Medical Sensors | Bluetooth Headsets |
|---|---|
Use Scenario: Continuous glucose monitor powered by a single AA alkaline cell. IC Role / Device Role / Timing Role: Boosts 0.6–1.5V battery voltage to stable 3.0V for MCU, sensor interface, and BLE radio. Use Value: 0.5V minimum operating voltage extracts full battery capacity, extending field service life beyond competing solutions. | Use Scenario: Compact wireless headset with voice prompt and battery level indication. IC Role / Device Role / Timing Role: Supplies regulated 3.0V to audio codec and Bluetooth SoC during variable load (idle vs. streaming). Use Value: Skip mode reduces idle current to 20µA, enabling >100-hour standby on one AAA cell. |
| Wireless Keyboard/Mouse | USB-OTG Peripherals |
Use Scenario: Energy-harvesting wireless keyboard using ambient light and motion. IC Role / Device Role / Timing Role: Regulates erratic 0.7–1.8V harvested voltage to clean 3.0V for microcontroller and RF transceiver. Use Value: 0.6V start-up voltage allows operation immediately after energy accumulation, minimizing wake latency. | Use Scenario: Portable HDMI-to-USB adapter powered by host OTG port or coin cell backup. IC Role / Device Role / Timing Role: Generates 3.0V rail for USB PHY and level shifters when host VBUS drops below 4.4V. Use Value: Output disconnect prevents backfeed into dying coin cell, preserving backup power integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | 0.3V min start-up; 3.0V fixed output; no FAULT pin; 0.95A peak switch current. | Lacks fault reporting and output disconnect-requires external circuitry for battery isolation. | Choose when lowest possible start-up voltage is critical and fault monitoring is handled externally. |
| MAX17065ETA+ | 0.7V min start-up; adjustable output; includes I2C interface; 1.2A peak switch current. | Requires external feedback resistors and I2C control-adds complexity but enables dynamic voltage scaling. | Choose when programmable output or telemetry integration outweighs BOM simplicity. |
Compared with TPS61200DRCT and MAX17065ETA+, the ISL9111AEH30Z-T7A uniquely combines ultra-low 0.6V start-up, integrated FAULT reporting, and automatic output disconnect-making it optimal for disposable, safety-critical, or space-constrained battery-powered systems where reliability and minimal external components are mandatory.
Availability
ISL9111AEH30Z-T7A is available at Aetrix Electronics and suitable for portable medical sensors, Bluetooth headsets, wireless keyboards/mice, and USB-OTG peripherals requiring stable component supply across long production lifecycles.
Supply support for ISL9111AEH30Z-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 ISL9111A family was designed specifically for ultra-low-voltage battery-powered applications-prioritizing start-up capability, light-load efficiency, and robust fault handling in compact, cost-sensitive portable electronics.
FAQ
What is the minimum input voltage required for ISL9111AEH30Z-T7A to start up?
The ISL9111AEH30Z-T7A has a typical minimum start-up voltage of 0.6V under no-load conditions, enabling operation from nearly depleted single-cell alkaline or NiMH batteries. This value is confirmed in the Electrical Specifications table on page 6 of FN7602 Rev.4.00, where VMIN for ISL9111A is specified as 0.75V maximum (with 0.6V typical implied by characterization data and Figure 16). The ISL9111AEH30Z-T7A leverages this capability to extend usable battery life in disposable devices.
Does ISL9111AEH30Z-T7A provide output disconnect during shutdown?
Yes, ISL9111AEH30Z-T7A provides true output disconnect during shutdown. When the EN pin is driven low, internal circuitry reverses the polarity of the P-channel MOSFET's body diode, blocking reverse current flow from VOUT to VIN. This feature prevents battery depletion during storage or system sleep-confirmed in the "Synchronous Rectifier" section on page 8 of FN7602 Rev.4.00 and validated by the absence of leakage current paths in the block diagram for fixed-output variants.
What protection features does ISL9111AEH30Z-T7A include?
ISL9111AEH30Z-T7A integrates over-temperature protection (150°C trip, 25°C hysteresis), short-circuit protection (triggered when VOUT falls below VIN), and output regulation loss detection. All faults assert the open-drain FAULT pin within 2ms-documented in Table 1 on page 10 of FN7602 Rev.4.00. Unlike the ADJ version, it does not include overvoltage protection (OVP), as OVP is exclusive to adjustable-output variants per datasheet specification.
Can ISL9111AEH30Z-T7A be used with a 4.7µH inductor?
Yes, ISL9111AEH30Z-T7A is explicitly designed for stable operation with a 4.7µH inductor, as stated on page 10 ("Inductor Selection") of FN7602 Rev.4.00. Recommended part numbers include Sumida CDRH2D18/HPNP and Taiyo Yuden NRS4012. Using 4.7µH ensures guaranteed PWM-to-skip mode transition stability across input/output voltage and load ranges-critical for consistent efficiency in portable applications.
How does ISL9111AEH30Z-T7A differ from ISL9111EH30Z-T7A?
The ISL9111AEH30Z-T7A disables undervoltage lockout (UVLO) to maximize usable life of non-rechargeable batteries, allowing operation down to 0.5V after startup. In contrast, ISL9111EH30Z-T7A retains UVLO (shuts off at 0.7V) to protect rechargeable cells from over-discharge. Both share identical pinout, package, 3.0V output, and efficiency-differences are strictly in start-up/operating voltage thresholds and fault behavior, as defined in the "Minimum Startup and Minimum Operating Voltage" section on page 8 of FN7602 Rev.4.00.
ISL9111AEH30Z-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):
- 0.6V
- Voltage - Input (Max):
- 2.8V
- Voltage - Output (Min/Fixed):
- 3V
- 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
ISL9111AEH30Z-T7A FAQ
1.How can I place an order for ISL9111AEH30Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9111AEH30Z-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 ISL9111AEH30Z-T7A reliable?
The price and inventory of ISL9111AEH30Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9111AEH30Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL9111AEH30Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9111AEH30Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9111AEH30Z-T7A?
ISL9111AEH30Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9111AEH30Z-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 ISL9111AEH30Z-T7A?
For technical support, including ISL9111AEH30Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9111AEH30Z-T7A requirements.
6.How does Aetrix verify that ISL9111AEH30Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9111AEH30Z-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 ISL9111AEH30Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL9111AEH30Z-T7A?
All ISL9111AEH30Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9111AEH30Z-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 ISL9111AEH30Z-T7A part is unused and in its original packaging.
Return procedure for ISL9111AEH30Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9111AEH30Z-T7A 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…
