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Renesas EL7536IYZ-T7
- Part No.:
- EL7536IYZ-T7
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7536IYZ-T7.pdf
- Description:
- IC REG BUCK ADJ 1A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,007
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Product details
Overview
EL7536IYZ-T7 from Intersil is a synchronous, integrated-FET 1A step-down DC/DC regulator with internal compensation, operating from 2.5V to 5.5V input and delivering adjustable output from 0.8V to VIN. It features 1.4MHz PWM switching, <1µA shutdown current, and 100ms open-drain Power-On-Reset (POR) output. Used in Li-ion–powered portable electronics requiring compact, high-efficiency power conversion.
For engineers reviewing the EL7536IYZ-T7 datasheet, EL7536IYZ-T7 pinout, EL7536IYZ-T7 application, or EL7536IYZ-T7 equivalent, key selection criteria include its MSOP10 package footprint (<0.15in²), internally compensated voltage-mode control, 94% peak efficiency, thermal/overcurrent protection, and POR timing behavior under RSI-triggered reset.
Technical Context
The EL7536IYZ-T7 implements a fixed-frequency voltage-mode PWM controller with integrated PMOS/NMOS synchronous power switches (RDS(ON) = 70mΩ / 45mΩ at VDD = 5V). Its internal compensation eliminates external loop components, enabling stable operation with only two 10–22µF ceramic capacitors and a 1.5–2.2µH inductor.
It supports 100% duty-cycle operation for near-input-output voltage tracking, includes soft-start (650µs), and delivers POR with 100ms delay referenced to output regulation. Protection includes cycle-by-cycle current limiting (1.5A), thermal shutdown at 145°C with 15°C hysteresis, and undervoltage lockout (2.2V turn-on, 2.2V turn-off).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, 3.3V, and 5V rails without external LDO pre-regulation. |
| Output Current | 1A continuous - sufficient for core logic, memory, and RF subsystems in portable devices. |
| Switching Frequency | 1.4MHz typical - enables use of small 1.5–2.2µH inductors and reduces output ripple without compromising EMI filtering complexity. |
| Feedback Reference | 800mV ±10mV - sets output via resistor divider; enables precise 1.2V, 1.8V, 2.5V, 3.3V, or custom voltages with minimal error. |
| Shutdown Current | <1µA - preserves battery life during deep sleep modes in handheld and IoT endpoints. |
| POR Delay | 100ms nominal - provides deterministic system reset timing after output regulation is achieved. |
| Operating Temp | −40°C to +85°C - qualified for industrial and extended commercial environments without derating. |
Pinout & Package
EL7536IYZ-T7 is housed in a RoHS-compliant, Pb-free annealed 10-lead MSOP package (MDP0043), 3.0mm × 4.9mm × 1.1mm profile, with fused leads for improved thermal performance (θJA = 115°C/W on high-conductivity board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground | Reference return for control circuitry; must be isolated from PGND and joined at single point near FB/VO. |
| 2 PGND | Power Ground | Return path for high-current LX switching node; requires large copper pour and multiple vias for thermal management. |
| 3 LX | Switch Node | Drives external inductor; carries high di/dt; layout critical to minimize EMI and voltage spikes. |
| 4 VIN | Power Stage Input | Supplies NMOS/PMOS switches; requires low-ESR 10–22µF ceramic capacitor placed adjacent to PIN 4 and PIN 2. |
| 5 VDD | Controller Supply | Bias supply for internal logic; decoupled by C2 (10µF); not interchangeable with VIN. |
| 6 RSI | Reset Initiate | Active-HI asynchronous trigger for immediate POR restart; pulled low when unused. |
| 7 EN | Enable Control | Active-HI logic input; controls startup/shutdown sequence and soft-start initiation. |
| 8 POR | Open-Drain Reset | 100ms-delayed active-low reset signal; requires external pull-up (e.g., 100kΩ to VO) for Power-Good functionality. |
| 9 VO | Output Sense | High-side output voltage sensing point; connects directly to load and feedback divider top node. |
| 10 FB | Feedback Input | Monitors divided output voltage; 800mV reference sets regulation point; sensitive to noise-route away from LX. |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Controller | Eliminates need for external compensation network-reduces BOM count and layout sensitivity while maintaining stability across 10–22µF output capacitance range. |
| Synchronous FET Integration | Integrated 70mΩ PMOS and 45mΩ NMOS switches enable >94% efficiency at 1A and eliminate external bootstrap capacitor requirement. |
| 100% Duty-Cycle Capability | Allows VO to track VIN down to VO ≈ VIN − IO×(RDS(ON)_PMOS + RL)-critical for Li-ion systems operating near end-of-discharge. |
| Thermal Shutdown with Hysteresis | Shuts down at 145°C and auto-restarts at 130°C-prevents latch-up and enables self-recovery in thermally constrained enclosures. |
| MSOP10 Footprint | 0.15in² total converter area (with external passives on one side only)-enables ultra-compact designs in space-limited SFP modules and barcode scanners. |
Applications
| Portable Test Equipment | Li-Ion Battery–Powered Devices |
|---|---|
Use Scenario: Handheld multimeters and signal generators requiring stable 1.8V/3.3V rails from variable 3.0–4.2V battery input. IC Role / Device Role / Timing Role: Primary step-down regulator supplying microcontroller core, ADC, and display driver; POR ensures clean boot after battery insertion. Use Value: 1.4MHz switching minimizes inductor size; <1µA shutdown extends battery runtime between measurements; 100% duty cycle maintains output as battery discharges below 3.3V. | Use Scenario: Wearables and medical sensors powered by single-cell Li-ion batteries with tight space constraints. IC Role / Device Role / Timing Role: System power manager delivering regulated voltage to BLE SoC and analog front-end; EN pin enables firmware-controlled power sequencing. Use Value: MSOP10 package + one-side layout reduces PCB area by >40% vs. discrete solutions; internal compensation avoids tuning delays in production ramp. |
| Small Form Factor (SFP) Modules | Bar Code Readers |
Use Scenario: Pluggable optical transceivers needing reliable 3.3V rail within strict 1×1 inch mechanical envelope. IC Role / Device Role / Timing Role: Compact DC/DC converter powering laser driver and DSP; POR synchronizes module initialization with host detection. Use Value: 0.15in² total solution size meets SFP MSA footprint limits; thermal performance (θJA = 115°C/W) sustains 1A load at 70°C ambient without airflow. | Use Scenario: Industrial handheld scanners operating in wide temperature ranges and subject to frequent drop-induced power interruptions. IC Role / Device Role / Timing Role: Main power IC providing 5V or 3.3V to imager and decode engine; RSI pin allows host MCU to force POR on communication loss. Use Value: 100ms POR delay ensures firmware completes initialization before peripherals assert ready; overtemperature protection prevents field failures during continuous scanning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL97536 | Successor product from same manufacturer; identical pinout, enhanced efficiency (95% typ), lower RDS(ON), and improved thermal performance (θJA = 95°C/W). | Drop-in replacement with no layout change; supports higher ambient temps and tighter load transients in next-gen designs. | Select ISL97536 for new designs requiring longer lifecycle support and margin for future performance upgrades. |
| TPS62231DRYR | 1.8V–6.5V input, 1A, 3.6MHz switching, 2.5µA quiescent current; different pinout (6-pin WSON), no integrated POR or RSI. | Higher frequency enables smaller passives but lacks POR/RSI functionality; requires external reset IC for system-level sequencing. | Choose TPS62231DRYR where ultra-small size and lowest IQ dominate, and POR can be implemented externally. |
Compared with EL7536IYZ-T7, ISL97536 offers direct upgrade path with identical form-factor and enhanced specs, while TPS62231DRYR trades POR/RSI integration for higher switching frequency and lower IQ-requiring additional components for equivalent system functionality.
Availability
EL7536IYZ-T7 is available at Aetrix Electronics and suitable for portable test equipment, Li-ion–powered wearables, and SFP modules requiring stable component supply, long-term obsolescence management, and RoHS-compliant packaging.
Supply support for EL7536IYZ-T7 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 regulators, precision amplifiers, and interface solutions.
The EL7536 product line targets space-constrained, battery-operated portable electronics requiring highly integrated, thermally robust, and easy-to-layout step-down power conversion with built-in system-level functions like POR and RSI.
FAQ
What is the maximum output current capability of the EL7536IYZ-T7?
The EL7536IYZ-T7 is rated for 1A continuous output current under specified thermal conditions (−40°C to +85°C ambient, adequate PCB copper). Its current limit is set at 1.5A, and it includes overcurrent protection that triggers shutdown if sustained overload occurs. Derating is required above 70°C junction temperature per the thermal curves in the FN7396 datasheet.
Does the EL7536IYZ-T7 require external compensation components?
No, the EL7536IYZ-T7 features an internally compensated voltage-mode PWM controller. This eliminates the need for external compensation networks, simplifying design and reducing bill-of-materials. Stability is maintained using recommended 10–22µF ceramic output capacitors and a 1.5–2.2µH inductor, as specified in the FN7396 datasheet.
How does the POR function behave on the EL7536IYZ-T7 during power-up and RSI assertion?
On the EL7536IYZ-T7, the POR output goes low for approximately 100ms after VO reaches regulation. When the RSI pin is driven high, POR immediately pulls low and holds for 100ms after RSI returns low-without affecting VO. This behavior is confirmed in Figure 9 and Applications Information section of FN7396 Rev 8.00.
What package type and lead finish does the EL7536IYZ-T7 use?
The EL7536IYZ-T7 uses a 10-lead MSOP package (MDP0043) with Pb-free plus anneal termination-100% matte tin plating compatible with both SnPb and Pb-free soldering processes. It is RoHS compliant and classified per IPC/JEDEC J-STD-020 for moisture sensitivity level.
Can the EL7536IYZ-T7 operate with input voltage below the output voltage setting?
Yes, the EL7536IYZ-T7 supports 100% duty-cycle operation, allowing VO to approach VIN minus losses (IO × [RDS(ON)_PMOS + RL]). This enables regulation even when VIN drops near or slightly below the programmed VO-critical for Li-ion battery discharge profiles. The datasheet confirms this behavior in the "100% Duty Ratio Operation" section.
EL7536IYZ-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
EL7536IYZ-T7 FAQ
1.How can I place an order for EL7536IYZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7536IYZ-T7 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 EL7536IYZ-T7 reliable?
The price and inventory of EL7536IYZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7536IYZ-T7 is usually 5 days.
3.What payment methods are accepted for EL7536IYZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7536IYZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7536IYZ-T7?
EL7536IYZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7536IYZ-T7 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 EL7536IYZ-T7?
For technical support, including EL7536IYZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7536IYZ-T7 requirements.
6.How does Aetrix verify that EL7536IYZ-T7 is sourced from the original manufacturer or authorized distributors?
All EL7536IYZ-T7 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 EL7536IYZ-T7 meets industry standards.
7.What is the process for return or replacement of EL7536IYZ-T7?
All EL7536IYZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with EL7536IYZ-T7, 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 EL7536IYZ-T7 part is unused and in its original packaging.
Return procedure for EL7536IYZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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