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Renesas EL7562CUZ
- Part No.:
- EL7562CUZ
- Manufacturer:
- Renesas
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
EL7562CUZ.pdf
- Description:
- IC REG BUCK ADJ 2A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,192
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Product details
Overview
EL7562CUZ from Intersil is a monolithic synchronous step-down DC-DC regulator delivering 2A continuous output current with adjustable output voltage from 1.0V to 3.8V, operating at up to 95% efficiency and 580kHz typical switching frequency, used in DSP/CPU core power supplies requiring compact, high-efficiency regulation.
For engineers reviewing the EL7562CUZ datasheet, EL7562CUZ pinout, EL7562CUZ application, or EL7562CUZ equivalent, this page provides verified technical context, validated pin functions, confirmed package mapping to 16 Ld QSOP, real-world load/line regulation performance (±0.5%), and RoHS-compliant Pb-free packaging details.
Technical Context
The EL7562CUZ implements fixed-frequency current-mode PWM control with patented resistorless on-chip current sensing for cycle-by-cycle limiting and fast step-load response. Its integrated dual NMOS power FETs feature 60mΩ typical high-side and low-side RDS(on), enabling high efficiency without external sense resistors.
It supports oscillator synchronization via COSC pin, includes internal soft-start (0.5V/ms slope), over-temperature shutdown (135°C trip), and under-voltage lockout (2.6V turn-on). The feedback loop uses a precision 1.26V bandgap reference with ±0.5% load/line regulation and 50ppm/°C temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports CPU/DSP core loads without external current boosting. |
| Efficiency | Up to 95% - minimizes thermal dissipation in space-constrained portable designs. |
| Switching Frequency | 493–667kHz (typ. 580kHz) - enables use of small 4.7µH inductors and compact 0.5in² layout. |
| Output Voltage Range | 1.0V to 3.8V adjustable - covers standard logic rails (1.2V, 1.5V, 1.8V, 2.5V, 3.3V) via FB divider. |
| Reference Accuracy | ±0.5% load/line regulation - ensures stable output under varying input and load conditions. |
| Thermal Protection | 135°C trip with 20°C hysteresis - prevents latch-up during sustained overload or poor heatsinking. |
| Input Voltage Range | 4.5V to 5.5V nominal - optimized for 5V bus or regulated 3.3V-to-5V intermediate supply. |
Pinout & Package
EL7562CUZ is housed in a RoHS-compliant 16-lead QSOP (MDP0040) package with fused leads and matte tin termination. Thermal performance relies on PGND pins (4, 5, 9, 16) as primary heat conduction paths; SGND (Pin 1) must be isolated from PGND except at single-point connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SGND) | Signal ground reference | Return for control circuitry only; must be separated from PGND to avoid noise coupling into FB/VREF. |
| 2 (COSC) | Oscillator timing node | Connects to 270pF capacitor to set 580kHz frequency; also accepts external sync signal. |
| 3 (VDD) | Control logic supply | Internal bias rail derived from VIN; powers PWM controller, reference, and drivers. |
| 4,5,9,16 (PGND) | Power ground return | Source connections for internal NMOS FETs; primary thermal path - requires large copper pour. |
| 6,7 (VIN) | Main power input | Accepts 4.5–5.5V input; connects to drain of high-side FET and VDRV bootstrap supply. |
| 8 (EN) | Enable input | Active-high with 2µA internal pull-up; open-circuit enables device; <2.7V disables regulator. |
| 10 (VHI) | High-side gate drive supply | Bootstrapped voltage (~10V when VIN=5V) for high-side NMOS gate drive. |
| 11,12 (LX) | Switch node output | High-current digital output driving external inductor; average voltage = VOUT. |
| 13 (VDRV) | Bootstrap and low-side driver supply | Supplies low-side driver and charges CVHI boot capacitor during LX low phase. |
| 14 (FB) | Voltage feedback input | 125nA internal pull-up forces VOUT→GND if floating; connects to resistor divider for output setting. |
| 15 (VREF) | Reference bypass | Connect 0.1µF capacitor to SGND to stabilize 1.26V bandgap reference and reject noise. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous NMOS FETs | Eliminates need for external high-side/low-side MOSFETs and gate drivers - reduces BOM count and layout complexity. |
| Resistorless current sensing | Enables true cycle-by-cycle current limiting without sense resistor power loss or PCB area penalty. |
| Adjustable soft-start slope | 0.5V/ms ramp rate prevents inrush current and output overshoot during power-up. |
| Break-before-make timing | 15ns dead time between high-side and low-side FET switching prevents shoot-through current. |
| Pb-free plus anneal packaging | RoHS-compliant matte tin termination compatible with both SnPb and lead-free reflow profiles (MSL3). |
Applications
| Application 1 | Application 2 |
|---|---|
|
Use Scenario: Powering 1.2V/1.5V DSP core in portable test equipment with tight thermal constraints. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated, low-noise core voltage. Use Value: 2A capability and 95% efficiency minimize board heating and extend battery runtime. |
Use Scenario: Generating 3.3V I/O supply from 5V backplane in industrial PLC modules. IC Role / Device Role / Timing Role: Compact, self-contained step-down converter replacing discrete controller + MOSFET solution. Use Value: Integrated FETs and 0.5in² footprint reduce component count and improve reliability vs. multi-chip alternatives. |
| Application 3 | Application 4 |
|
Use Scenario: GTL+ bus termination power in telecom line cards requiring precise 1.5V at 2A. IC Role / Device Role / Timing Role: High-accuracy, low-drift DC-DC regulator with ±0.5% regulation for signal integrity-critical rails. Use Value: 50ppm/°C reference tempco and 1.26V ±1% stability ensure consistent bus voltage across temperature. |
Use Scenario: Point-of-load conversion in FPGA development boards needing 2.5V/2A for configuration logic. IC Role / Device Role / Timing Role: Adjustable-output buck regulator supporting multiple voltage configurations via FB resistor change. Use Value: 1.0–3.8V adjustability allows reuse across different FPGA families without redesigning power stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EL7532 | Lower 1.5A output current, 3.3V/5V fixed output variants only; no adjustable VOUT. | Suitable for lower-power logic rails where adjustable output is unnecessary. | Prefer EL7532 only when 1.5A suffices and fixed 3.3V/5V simplifies design. |
| ISL85003A | Higher 3A rating, wider 3–36V input range, integrated compensation; requires external bootstrap diode. | Better suited for industrial 24V input systems or higher-current FPGA cores. | Choose ISL85003A when input exceeds 5.5V or >2A output is required. |
Compared with EL7562CUZ, EL7532 offers simpler fixed-output operation but sacrifices adjustability and current headroom, while ISL85003A extends input range and output capability at the cost of added external components and larger footprint.
Availability
EL7562CUZ is available at Aetrix Electronics and suitable for DSP core supplies, portable equipment power rails, and GTL+ bus termination requiring stable component supply with RoHS-compliant packaging and full tape-and-reel support.
Supply support for EL7562CUZ 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 references, and interface solutions.
The EL7562CUZ belongs to Intersil's monolithic synchronous buck regulator product line, engineered for compact, high-efficiency point-of-load conversion in DSP, CPU, and logic supply applications where minimal external components and thermal efficiency are critical.
FAQ
What is the maximum recommended input voltage for the EL7562CUZ?
The EL7562CUZ has an absolute maximum VIN rating of +6.5V, but its specified operating range is 4.5V to 5.5V. Exceeding 5.5V risks violating the guaranteed performance envelope and may trigger overvoltage stress on internal FETs and drivers. For reliable operation, maintain VIN within the 4.5–5.5V window as defined in the FN7295 datasheet.
Does the EL7562CUZ require an external bootstrap diode?
No, the EL7562CUZ does not require an external bootstrap diode. Its internal bootstrap circuit uses an integrated switch and diode to charge the CVHI capacitor from VDRV during the LX low phase. This eliminates the need for external diodes and simplifies layout - a key differentiator from many competing synchronous buck controllers.
How is the output voltage set on the EL7562CUZ?
The EL7562CUZ output voltage is set by an external resistor divider connected between VOUT and GND, with the midpoint feeding the FB pin. Using the formula VOUT = 0.985 × (1 + R2/R1) for 5V input, typical values like R1 = 1kΩ and R2 = 2.37kΩ yield 3.3V. The 125nA internal pull-up on FB ensures safe default behavior if the divider is disconnected.
What is the thermal shutdown behavior of the EL7562CUZ?
The EL7562CUZ features over-temperature protection with a 135°C trip point and 20°C hysteresis (115°C restart threshold). When junction temperature exceeds 135°C, the device shuts down all switching activity and holds EN inactive until temperature falls below 115°C, then resumes normal operation automatically - no external reset required.
Is the EL7562CUZ pin-compatible with other members of the EL75xx family?
No, the EL7562CUZ is not pin-compatible with other EL75xx devices such as EL7532 or EL7552. While sharing functional similarities, differences in pin assignment (e.g., EL7532 lacks VHI and uses different FB architecture) and package-specific routing prevent direct substitution. Always verify pinout against the respective datasheet before board reuse.
EL7562CUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 3.8V
- Current - Output:
- 2A
- Frequency - Switching:
- 200kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
EL7562CUZ FAQ
1.How can I place an order for EL7562CUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL7562CUZ 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 EL7562CUZ reliable?
The price and inventory of EL7562CUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL7562CUZ is usually 5 days.
3.What payment methods are accepted for EL7562CUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL7562CUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL7562CUZ?
EL7562CUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL7562CUZ 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 EL7562CUZ?
For technical support, including EL7562CUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL7562CUZ requirements.
6.How does Aetrix verify that EL7562CUZ is sourced from the original manufacturer or authorized distributors?
All EL7562CUZ 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 EL7562CUZ meets industry standards.
7.What is the process for return or replacement of EL7562CUZ?
All EL7562CUZ units undergo pre-shipment inspection (PSI). If there is an issue with EL7562CUZ, 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 EL7562CUZ part is unused and in its original packaging.
Return procedure for EL7562CUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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