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Renesas ISL78113AARAZ-T7A
- Part No.:
- ISL78113AARAZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
ISL78113AARAZ-T7A.pdf
- Description:
- IC REG BOOST ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
ISL78113AARAZ-T7A from Renesas (formerly Intersil) is an automotive-qualified, fully integrated synchronous boost converter delivering up to 500mA output current from 0.8V–4.7V input, with adjustable 3.0V–5.2V output, 2MHz switching frequency, and 95% peak efficiency. It serves as a compact power rail generator for USB-OTG and HDMI interfaces in automotive infotainment and camera systems.
For engineers reviewing the ISL78113AARAZ-T7A datasheet, ISL78113AARAZ-T7A pinout, ISL78113AARAZ-T7A application, or ISL78113AARAZ-T7A equivalent, key selection criteria include its -40°C to +105°C operating range, 1.3A peak switch current limit, output disconnect during shutdown, and fault protections including OVP, OCP, OTP, and UVLO.
Technical Context
The ISL78113AARAZ-T7A implements peak current-mode PWM control with internal compensation, using a 2MHz oscillator to drive complementary N- and P-channel MOSFETs in a synchronous rectified topology. Its control loop includes slope compensation, zero-current detection, and digital soft-start.
It integrates VOUT isolation circuitry that actively reverses the P-MOSFET body diode polarity during shutdown to block reverse current flow-eliminating need for external load switches. Fault monitoring initiates 2ms after enable and responds to low battery, VOUT regulation loss, short circuit, overtemperature (>150°C), and overvoltage (>5.9V) with defined shutdown/restart behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V to 4.7V - supports single-cell Li-ion, NiMH/NiCd, and low-voltage automotive rails. |
| Output Current | Up to 500mA at 3VIN/5VOUT - sufficient for USB-OTG host mode and HDMI sink power requirements. |
| Switching Frequency | 2MHz typical - enables use of 2.2µH–6.8µH low-profile inductors and avoids AM band interference. |
| Peak Switch Current Limit | 1.3A typical - sets maximum inductor ramp current and defines safe operating area under transient loads. |
| Feedback Reference Voltage | 800mV typical - determines output voltage via external resistor divider (e.g., 422Ω/80.6Ω for 5.0V). |
| Shutdown Quiescent Current | 50nA typical - minimizes battery drain in vehicle off-state for always-on subsystems. |
| Operating Temperature Range | -40°C to +105°C ambient - qualified per AEC-Q100 for under-hood and head-unit mounting locations. |
| Efficiency | Up to 95% at typical conditions - achieved via synchronous rectification and low RDS(ON) (0.20Ω N-MOS, 0.35Ω P-MOS). |
Pinout & Package
ISL78113AARAZ-T7A is housed in a 2mm × 2mm, 8-lead DFN package with exposed thermal pad (L8.2x2D). The package requires connection of the EPAD to PGND for optimal thermal performance and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGND) | Power ground | High-current return path for SW node and output capacitor; must be low-inductance connection to system GND plane. |
| 2 (VOUT) | Regulated output | Delivers final boosted voltage; connects directly to output capacitor and load; isolated from input during shutdown. |
| 3 (NC) | No connection | Unbonded pin; must remain unconnected on PCB to avoid parasitic coupling or reliability risk. |
| 4 (FB) | Feedback input | Senses divided output voltage; requires close placement of R1/R2 divider to minimize noise pickup from SW node. |
| 5 (EN) | Enable control | Active-HIGH logic input; drives device into ultra-low-IQ shutdown (<1µA) when pulled LOW; supports system-level power sequencing. |
| 6 (AGND) | Analog ground | Reference for feedback amplifier and internal reference; should be tied to PGND at single point near IC to avoid noise injection. |
| 7 (VBAT) | Input supply | Accepts battery or secondary rail; requires local 10µF ceramic capacitor between VBAT and PGND for stability and EMI suppression. |
| 8 (SW) | Switching node | Drives inductor; carries high di/dt current; must be routed short/wide with minimal loop area to reduce EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Output disconnect during shutdown | Prevents battery depletion by blocking reverse current through P-MOSFET body diode via active polarity reversal. |
| Synchronous rectification | Replaces Schottky diode with 0.35Ω P-MOSFET, reducing conduction loss and enabling >90% efficiency at light-to-moderate loads. |
| Integrated fault protection | Combines OVP (5.9V threshold), OCP (1.3A peak), OTP (150°C shutdown with 25°C hysteresis), and UVLO (0.70V typical) for robust automotive operation. |
| Forced PWM operation | Maintains fixed 2MHz switching even at no load, eliminating audible noise and ensuring predictable EMI profile-requires minimum ~3.9mA load for tight VOUT regulation. |
| Digital soft-start | Linear pre-charge phase followed by controlled PWM ramp-up limits inrush current; full start-up completes in ≤1ms at 500mA load. |
| AEC-Q100 qualification | Qualified to Grade 2 (-40°C to +105°C ambient), including HBM ESD (4kV), CDM (2.2kV), and latch-up (15mA) testing per automotive standards. |
Applications
| Automotive Infotainment Power | USB-OTG Host Supply |
|---|---|
Use Scenario: Powering HDMI transmitter and audio codec in head unit from 3.6V battery rail. IC Role / Device Role / Timing Role: Generates stable 5.0V rail with <±0.5% load/line regulation to meet HDMI CEA-861 timing margin requirements. Use Value: Eliminates need for discrete boost + LDO cascade; 2MHz operation avoids AM band interference critical for FM radio coexistence. | Use Scenario: Providing 5V/500mA to USB peripherals (e.g., flash drives, cameras) in rear-seat entertainment system. IC Role / Device Role / Timing Role: Acts as regulated boost source compliant with USB 2.0 voltage tolerance (4.4–5.25V) and inrush current limits. Use Value: Output disconnect prevents backfeed into battery during system sleep; 50nA shutdown current extends vehicle off-time battery life. |
| Automotive Camera Module | Low-Voltage Industrial Sensor Node |
Use Scenario: Powering 5V image sensor and ISP in ADAS front camera powered from 2.8V–3.3V domain. IC Role / Device Role / Timing Role: Supplies clean, ripple-controlled 5V rail with fast load transient response (<100µs recovery from 20mA→150mA step) to prevent image artifacts. Use Value: Integrated OVP protects sensitive imaging electronics from overvoltage faults; -40°C to +105°C rating ensures operation in engine bay mounting. | Use Scenario: Generating 3.3V from 1.8V backup battery in industrial IoT edge node with strict energy budget. IC Role / Device Role / Timing Role: Provides regulated output from sub-2V input (down to 0.8V), enabling operation during brownout or supercapacitor discharge phases. Use Value: Ultra-low 50nA shutdown current preserves multi-year battery life; 2MHz switching allows smallest possible passive component footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61230ARGTR | Fixed 5.0V output; 1.2A switch current limit; 2.5MHz switching; no output disconnect during shutdown. | Lacks VOUT isolation-requires external load switch for battery-sensitive applications; higher IQ (1.5µA shutdown). | Choose when fixed 5V output suffices and board space permits external isolation; not suitable for always-on automotive modules requiring zero-backfeed. |
| MAX17222ATA+T | Adjustable 2.5V–5.25V output; 0.5A max load; 1.2MHz switching; 350nA shutdown current; no OVP or OTP. | Lower integration-requires external components for full fault coverage; narrower input range (0.7V–5.5V); lacks automotive qualification. | Consider for cost-sensitive non-automotive portable designs where AEC-Q100 is not required and thermal/fault robustness is secondary. |
Compared with TPS61230ARGTR and MAX17222ATA+T, the ISL78113AARAZ-T7A uniquely combines automotive qualification, output disconnect, comprehensive fault protection (OVP/OCP/OTP/UVLO), and ultra-low 50nA shutdown current-making it the only option qualified for safety-critical, battery-isolated automotive power rails.
Availability
ISL78113AARAZ-T7A is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and USB-OTG peripheral power supplies requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ISL78113AARAZ-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 power, and SoC solutions, with deep expertise in automotive-grade mixed-signal ICs and functional safety design.
The ISL78113AARAZ-T7A belongs to Renesas' ISL78xxx automotive power management family, engineered specifically for low-voltage, high-efficiency DC-DC conversion in infotainment, telematics, and ADAS subsystems where size, thermal performance, and AEC-Q100 compliance are mandatory.
FAQ
What is the minimum input voltage required for ISL78113AARAZ-T7A to start switching?
The ISL78113AARAZ-T7A has a start-up voltage of 0.75V typical and an input undervoltage lockout (UVLO) threshold of 0.70V typical. It begins switching once VBAT rises above the UVLO threshold and EN is asserted HIGH. Below 0.66V, the device remains latched off and will not initiate start-up-even if EN is high-ensuring reliable operation during cold-cranking or weak-battery conditions.
Does ISL78113AARAZ-T7A support forced PWM mode, and how does it affect light-load regulation?
Yes, ISL78113AARAZ-T7A operates in forced PWM mode at all loads, eliminating pulse-skipping. At no load, this causes slight VOUT overshoot due to fixed 42ns minimum on-time pulses. To maintain regulation within ±3% of target, a minimum load of ~3.9mA is required-calculated using worst-case parameters (VIN=3.6V, FSW=2.23MHz, L=5.44µH, tMIN(ON)=49ns). Adding a small bleeder resistor achieves stable light-load performance.
How is output voltage set on ISL78113AARAZ-T7A, and what is the reference voltage?
The ISL78113AARAZ-T7A uses an external resistor divider (R1, R2) connected between VOUT, FB, and AGND to set output voltage. Its internal feedback reference is 800mV typical (784–816mV over temperature). For example, using R1 = 422Ω and R2 = 80.6Ω yields VOUT = 800mV × (1 + 422/80.6) ≈ 5.0V. Resistors must be placed adjacent to the FB pin to avoid noise coupling from the noisy SW node.
What thermal management practices are recommended for ISL78113AARAZ-T7A in high-ambient environments?
For reliable operation at +105°C ambient, the ISL78113AARAZ-T7A requires robust thermal design: the exposed thermal pad must be soldered to a solid PGND plane with ≥4 thermal vias (0.3mm diameter) connecting to inner/outer GND layers. Board layout must minimize power loop area, place input/output capacitors within 3mm of respective pins, and avoid routing noise-sensitive traces (e.g., FB) near the SW node.
Is ISL78113AARAZ-T7A pin-compatible with earlier ISL78113 variants such as ISL78113ARAZ?
Yes, ISL78113AARAZ-T7A is pin-compatible with ISL78113ARAZ and ISL78113AARAZ-T. All share identical 8-lead DFN (2mm × 2mm) package, pinout, and electrical specifications. The "-T7A" suffix denotes 250-piece tape-and-reel packaging per Tech Brief TB347; functionally and mechanically, it is a direct replacement for prior versions in existing designs.
ISL78113AARAZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-VFDFN 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):
- 0.8V
- Voltage - Input (Max):
- 4.7V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
ISL78113AARAZ-T7A FAQ
1.How can I place an order for ISL78113AARAZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78113AARAZ-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 ISL78113AARAZ-T7A reliable?
The price and inventory of ISL78113AARAZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78113AARAZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL78113AARAZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78113AARAZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78113AARAZ-T7A?
ISL78113AARAZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78113AARAZ-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 ISL78113AARAZ-T7A?
For technical support, including ISL78113AARAZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78113AARAZ-T7A requirements.
6.How does Aetrix verify that ISL78113AARAZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL78113AARAZ-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 ISL78113AARAZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL78113AARAZ-T7A?
All ISL78113AARAZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL78113AARAZ-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 ISL78113AARAZ-T7A part is unused and in its original packaging.
Return procedure for ISL78113AARAZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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