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Renesas EL7536IYZ-T13
- Part No.:
- EL7536IYZ-T13
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
EL7536IYZ-T13.pdf
- Description:
- IC REG BUCK ADJ 1A 10MSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
EL7536IYZ-T13 from Intersil is a synchronous, integrated-FET 1A step-down DC/DC regulator in MSOP-10 package, operating from 2.5V–5.5V input to deliver adjustable 0.8V–VIN output with internal compensation, 1.4MHz PWM switching, and 100ms open-drain POR output-used in Li-ion–powered portable electronics requiring compact, thermally robust power conversion.
For engineers reviewing the EL7536IYZ-T13 datasheet, EL7536IYZ-T13 pinout, EL7536IYZ-T13 application, or EL7536IYZ-T13 equivalent, key selection factors include its internally compensated voltage-mode control, <1µA shutdown current, dual ground separation (PGND/SGND), 70mΩ PMOS + 45mΩ NMOS RDS(ON), and -40°C to +85°C industrial temperature rating.
Technical Context
The EL7536IYZ-T13 implements a fixed-frequency voltage-mode PWM controller with internal compensation, eliminating external loop components. Its synchronous topology uses complementary PMOS/NMOS FETs (70mΩ/45mΩ typical) driven by a 1.4MHz clock, enabling high-efficiency operation up to 94% at 1A load.
It integrates dedicated signal (SGND) and power (PGND) grounds, a 100ms POR output with RSI-triggered reset, soft-start (650µs), overcurrent limiting at 1.5A, and thermal shutdown at 145°C with 15°C hysteresis-ensuring safe operation under fault and transient conditions.
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 - delivers full rated load with thermal derating per θJA = 115°C/W (high-κ board) or 206°C/W (low-κ board). |
| Switching Frequency | 1.4MHz typical - enables use of small 1.5µH–2.2µH inductors and 10µF–22µF ceramic capacitors for minimal footprint. |
| Feedback Voltage | 800mV ±10mV - sets output via resistor divider; enables precise 0.8V–VIN adjustment with <±0.5% load regulation. |
| Shutdown Current | <1µA - preserves battery life in standby mode; EN pin controls entry/exit with 2.4V turn-on and 0.8V turn-off thresholds. |
| POR Delay | 100ms nominal - provides reliable system reset timing after output reaches regulation; open-drain output requires external pull-up. |
| Thermal Protection | 145°C shutdown / 130°C restart - prevents latch-up during overload; hysteresis ensures stable cycling without oscillation. |
Pinout & Package
EL7536IYZ-T13 is housed in a RoHS-compliant, Pb-free MSOP-10 package (MDP0043), 3.0mm × 4.9mm × 1.1mm max height, with fused leads for improved thermal performance (θJA = 115°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SGND | Signal Ground Reference | Return path for control circuitry; must be separated from PGND and joined at single point near FB/VO pins. |
| 2 PGND | Power Ground Return | High-current return for LX and VIN paths; requires large copper pour and multiple vias for thermal dissipation. |
| 3 LX | Switch Node | Drives external inductor; carries high di/dt; must be routed short and wide to minimize EMI and voltage spikes. |
| 4 VIN | Main Power Input | Supplies power stage (PMOS/NMOS); accepts 2.5V–5.5V; requires local 10µF ceramic capacitor to PGND. |
| 5 VDD | Controller Supply | Bias supply for internal logic; derived from VIN but regulated internally; decoupled via 0.1µF to SGND. |
| 6 RSI | Reset Input | Active-HI asynchronous reset for POR; pulls POR low immediately and reasserts 100ms delay after RSI returns low. |
| 7 EN | Enable Control | Logic-HI (>2.4V) enables regulation; logic-LO (<0.8V) disables with <1µA quiescent draw; no pull-up required. |
| 8 POR | Power-On Reset Output | Open-drain output; sinks 5mA; asserts low for 100ms after VO reaches target; requires external pull-up resistor. |
| 9 VO | Output Voltage Sense | Direct connection to output rail; used with FB to close feedback loop; routing must avoid noise coupling. |
| 10 FB | Feedback Input | Monitors divided output voltage; referenced to SGND; connects to R1/R2 divider; high-impedance (250nA bias). |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Controller | Eliminates need for external compensation network; enables stable operation with 10µF–22µF ceramic output caps and 1.8µH inductor. |
| Synchronous Dual-FET Integration | 70mΩ PMOS + 45mΩ NMOS switches reduce conduction loss and eliminate external bootstrap capacitor. |
| 100ms POR with RSI Trigger | Provides deterministic system reset timing; RSI allows manual reset without disrupting VO or requiring power cycle. |
| Separate PGND/SGND Pins | Prevents noise coupling from high-current power paths into sensitive analog control circuitry, improving regulation accuracy. |
| 100% Duty Cycle Capability | Enables VO ≈ VIN − IO×(RDS(ON) + RL); supports near-input-output operation when input drops close to setpoint. |
Applications
| Bar Code Readers | Portable Test Equipment |
|---|---|
Use Scenario: Battery-powered handheld scanners requiring fast wake-up, low-noise 3.3V or 1.8V rails for CMOS image sensors and microcontrollers. IC Role / Device Role / Timing Role: Primary step-down regulator delivering clean, regulated output from single Li-ion cell; POR synchronizes MCU boot sequence. Use Value: 1.4MHz switching avoids audible noise; <1µA shutdown extends scan-session battery life; MSOP-10 footprint fits tight mechanical envelopes. | Use Scenario: Field-deployable multimeters and signal analyzers needing stable 1.2V/1.8V/3.3V supplies across varying battery states and ambient temperatures. IC Role / Device Role / Timing Role: Main DC/DC converter powering ADCs, op-amps, and FPGAs; thermal shutdown protects against enclosure overheating during extended measurements. Use Value: -40°C to +85°C rating ensures reliability in outdoor environments; 94% peak efficiency minimizes self-heating in sealed enclosures. |
| Cellular Phones | SFP Modules |
Use Scenario: Legacy 2G/3G handset baseband and RF subsystems requiring compact, low-quiescent 1A regulators compatible with aging Li-ion chemistries. IC Role / Device Role / Timing Role: Core voltage regulator for application processors and transceivers; EN pin enables dynamic power gating during sleep modes. Use Value: 2.5V–5.5V input range accommodates discharged cells down to 2.8V; soft-start prevents inrush current during call setup. | Use Scenario: Small Form Factor pluggable optical transceivers where PCB space is constrained and thermal headroom is limited. IC Role / Device Role / Timing Role: Point-of-load regulator generating 3.3V or 2.5V for laser drivers and limiting amplifiers; POR validates power integrity before link initialization. Use Value: 0.97cm² total solution size meets SFP MSA mechanical specs; fused-lead MSOP-10 improves thermal resistance vs standard MSOP. |
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 with identical pinout, enhanced efficiency (up to 96%), lower RDS(ON) (55mΩ/35mΩ), and improved light-load performance. | Designed for new designs targeting longer battery life and tighter thermal budgets; not recommended for legacy EL7536 drop-in replacement without validation. | Select ISL97536 for new designs requiring higher efficiency and updated thermal specs; verify layout compatibility and POR timing alignment. |
| TPS62231DRVR | 1.8V–6V input, 1A, 3.6MHz fixed-frequency buck; smaller 2mm × 2mm WSON package; requires external compensation; no integrated POR. | Better suited for ultra-compact, high-density layouts where board area is more critical than POR integration or thermal margin. | Choose TPS62231DRVR when footprint reduction is primary and POR can be implemented externally; confirm soft-start and enable threshold compatibility. |
Compared with ISL97536 and TPS62231DRVR, EL7536IYZ-T13 offers proven thermal robustness in MSOP-10, integrated POR with RSI trigger, and seamless compatibility with legacy designs-but lacks the efficiency gains and higher switching frequency of newer alternatives.
Availability
EL7536IYZ-T13 is available at Aetrix Electronics and suitable for portable medical devices, industrial handhelds, and telecom edge modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL7536IYZ-T13 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 EL7536 belongs to Intersil's monolithic synchronous buck regulator family, engineered for space-constrained, battery-operated portable electronics demanding high efficiency, low quiescent current, and integrated protection features.
FAQ
What is the maximum output voltage achievable with EL7536IYZ-T13?
The EL7536IYZ-T13 supports output voltages from 0.8V up to nearly VIN, enabled by its 100% duty-cycle capability. The practical maximum is VO ≈ VIN − IO × (RDS(ON)-PMOS + RL), where RDS(ON)-PMOS is typically 70mΩ and RL is inductor DCR. At 1A load and 5.5V input, VO can reach ~5.3V with appropriate inductor selection and layout.
Does EL7536IYZ-T13 require external compensation components?
No, EL7536IYZ-T13 features an internally compensated voltage-mode controller. It operates stably with only two ceramic capacitors (10µF–22µF input/output) and one inductor (1.5µH–2.2µH), eliminating the need for external compensation networks, error amplifiers, or phase-lead capacitors beyond the recommended 470pF C4 for optimal transient response.
How does the POR function work on EL7536IYZ-T13, and what external components are needed?
The POR output on EL7536IYZ-T13 is an open-drain signal that stays low for 100ms after VO reaches regulation. To use it, connect an external pull-up resistor (e.g., 100kΩ to 3.3V) to the POR pin. The RSI pin allows manual reset: asserting RSI high forces POR low immediately, and POR remains low for 100ms after RSI returns low-no additional timing components are required.
Can EL7536IYZ-T13 operate with a 2.5V input and deliver 1.8V at 1A?
Yes, EL7536IYZ-T13 is fully specified for 2.5V–5.5V input operation and delivers 1A continuously at 1.8V output. At 2.5V input, efficiency drops (~75–80% typical), but thermal performance remains within spec on a 4-layer board (θJA = 115°C/W). Ensure input capacitance is increased to 22µF if junction temperature exceeds 75°C or load exceeds 0.7A.
What is the difference between EL7536IYZ-T13 and EL7536IY-T13?
The EL7536IYZ-T13 is the Pb-free (RoHS-compliant) version with matte tin termination and annealed leadframe, qualified for both SnPb and Pb-free soldering. The EL7536IY-T13 is the legacy SnPb version. Both share identical electrical specs, pinout, and thermal performance, but EL7536IYZ-T13 complies with modern environmental standards and has different moisture sensitivity level (MSL) and reflow profile requirements.
EL7536IYZ-T13 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-T13 FAQ
1.How can I place an order for EL7536IYZ-T13 through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7536IYZ-T13 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-T13 reliable?
The price and inventory of EL7536IYZ-T13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7536IYZ-T13 is usually 5 days.
3.What payment methods are accepted for EL7536IYZ-T13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7536IYZ-T13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7536IYZ-T13?
EL7536IYZ-T13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7536IYZ-T13 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-T13?
For technical support, including EL7536IYZ-T13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7536IYZ-T13 requirements.
6.How does Aetrix verify that EL7536IYZ-T13 is sourced from the original manufacturer or authorized distributors?
All EL7536IYZ-T13 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-T13 meets industry standards.
7.What is the process for return or replacement of EL7536IYZ-T13?
All EL7536IYZ-T13 units undergo pre-shipment inspection (PSI). If there is an issue with EL7536IYZ-T13, 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-T13 part is unused and in its original packaging.
Return procedure for EL7536IYZ-T13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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