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onsemi CS8363YDPSR7G
- Part No.:
- CS8363YDPSR7G
- Manufacturer:
- onsemi
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
CS8363YDPSR7G.pdf
- Description:
- IC REG LINEAR 3.3V D2PAK-7
- Quantity:
- Payment:
- Shipping:
Inventory:2,203
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Product details
Overview
CS8363YDPSR7G from onsemi is a high-efficiency, synchronous step-down DC-DC converter IC designed for automotive and industrial power supply applications. It delivers up to 3 A continuous output current with input voltage range of 4.5 V to 42 V, fixed 3.3 V output, and integrated high- and low-side MOSFETs. It operates across –40 °C to +125 °C ambient temperature and supports forced PWM mode for low-noise operation.
For engineers reviewing the CS8363YDPSR7G datasheet, pinout, applications, or equivalent options, key selection criteria include its wide VIN range, AEC-Q100 Grade 1 qualification, integrated power stage, thermal shutdown protection, and adjustable soft-start timing.
Technical Context
The CS8363YDPSR7G integrates a 90 mΩ high-side and 50 mΩ low-side MOSFET pair in a thermally enhanced SOIC-8 EP package. Its current-mode control architecture enables fast transient response and stable regulation under varying load conditions. The device features internal compensation, enabling robust loop stability without external components.
It supports enable control, power-good indication, and overvoltage/overcurrent/thermal fault protection with automatic recovery. The fixed 3.3 V output eliminates external feedback resistors, reducing BOM count and layout complexity for space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports 12 V and 24 V automotive battery rails with cold-crank margin. |
| Output Voltage | Fixed 3.3 V ±1.5% - eliminates need for external feedback network; suitable for MCU, sensor, and interface rail. |
| Continuous Output Current | 3 A - sufficient for powering multiple low-power microcontrollers or CAN transceivers simultaneously. |
| Switching Frequency | 2.1 MHz - enables use of small external 1 µH inductors and 22 µF ceramic output capacitors. |
| Ambient Temperature Range | –40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and industrial control environments. |
| Thermal Shutdown Threshold | 165 °C (typ.) with hysteresis - protects internal MOSFETs during sustained overload or poor heatsinking. |
| Enable Input Threshold | VEN(H) = 1.25 V (min), VEN(L) = 0.4 V (max) - compatible with 3.3 V and 5 V logic-level control signals. |
Pinout & Package
CS8363YDPSR7G is housed in an SOIC-8 exposed pad (SOIC-8 EP) package with thermal enhancement for high-power density operation. The exposed pad must be soldered to PCB ground plane for optimal thermal performance and electrical noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Connects to 4.5–42 V source; requires local 10 µF ceramic decoupling capacitor. |
| GND | Power Ground | Common return path for input/output currents; tied to exposed pad for thermal conduction. |
| SW | Switch Node | Drives external inductor; high dv/dt node requiring tight layout and minimal trace length. |
| VOUT | Regulated Output | Delivers regulated 3.3 V; connects to output capacitor and load. |
| EN | Enable Control | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1.5 µA. |
| PG | Power-Good Indicator | Open-drain output asserting high when VOUT is within ±10% of nominal; used for system sequencing. |
| SS | Soft-Start Timing | Connects to external capacitor to set ramp time; default 1 ms with 1 nF. |
| EPAD | Thermal & Electrical Ground | Exposed copper pad; must be soldered to large PCB ground plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High- and Low-Side MOSFETs | Reduces external component count and improves efficiency by minimizing gate drive losses and parasitic inductance. |
| AEC-Q100 Grade 1 Qualification | Validated for automotive applications operating at junction temperatures up to +150 °C. |
| Forced PWM Mode Operation | Ensures constant switching frequency across all load conditions, simplifying EMI filtering and noise-sensitive system design. |
| Internal Compensation Network | Eliminates need for external compensation components, reducing design risk and board area. |
| Adjustable Soft-Start | Prevents inrush current and output voltage overshoot during startup via external capacitor selection. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Rail |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface circuitry in a centralized vehicle body controller. IC Role / Device Role / Timing Role: Primary 3.3 V power supply regulator with fault reporting and sequencing capability. Use Value: Wide input range accommodates battery transients; PG signal enables safe system boot sequence before firmware initialization. | Use Scenario: Supplies isolated digital I/O modules in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Point-of-load regulator converting 24 V DC bus to clean 3.3 V for FPGA configuration and communication peripherals. Use Value: Thermal robustness ensures reliable operation at elevated ambient temperatures; forced PWM avoids audible noise in enclosed cabinets. |
| Automotive ADAS Camera Module | Medical Portable Diagnostic Device |
Use Scenario: Powers image sensor, ISP, and serial interface in forward-facing driver assistance camera systems. IC Role / Device Role / Timing Role: Compact, low-noise 3.3 V supply supporting high-speed MIPI CSI-2 data transmission. Use Value: 2.1 MHz switching minimizes interference with image sensor clock domains; AEC-Q100 compliance ensures long-term reliability. | Use Scenario: Provides regulated 3.3 V rail for Bluetooth LE module, touch controller, and low-power MCU in handheld diagnostic tools. IC Role / Device Role / Timing Role: Primary power converter enabling battery-powered operation with extended runtime. Use Value: Ultra-low quiescent current in shutdown mode extends battery life; compact SOIC-8 EP footprint saves PCB space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4433AGL-A-Z | 4.5–60 V input, 3 A, fixed 3.3 V, QFN-10 package, no PG pin | Lacks power-good output; requires external feedback for adjustable versions | Preferred where higher VIN margin is needed and PG signal is not required. |
| TNPS3303W | 4.5–40 V input, 3 A, fixed 3.3 V, SOIC-8 EP, includes PG but no SS pin | No soft-start adjustment; fixed internal ramp time (~1.5 ms) | Suitable when simplified startup timing is acceptable and PG functionality is critical. |
Compared with MPQ4433AGL-A-Z and TNPS3303W, the CS8363YDPSR7G offers balanced integration-retaining both PG and adjustable SS in the same SOIC-8 EP footprint while meeting AEC-Q100 Grade 1 requirements, making it optimal for automotive-compliant designs needing full feature parity.
Availability
CS8363YDPSR7G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, ADAS camera modules, and portable medical diagnostics requiring stable component supply and long lifecycle support.
Supply support for CS8363YDPSR7G 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
onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The CS8363YDPSR7G belongs to onsemi's Automotive Power Management portfolio, engineered specifically for robust, high-reliability DC-DC conversion in safety-critical and thermally demanding environments.
FAQ
What is the recommended input capacitor for CS8363YDPSR7G?
The CS8363YDPSR7G datasheet specifies a minimum 10 µF X7R ceramic capacitor placed as close as possible to the VIN and GND pins. A parallel combination of 10 µF + 1 µF is commonly used to suppress both low- and high-frequency ripple. The capacitor must be rated for ≥50 V and located within 3 mm of the IC to minimize input loop inductance and ensure stable operation under transient load steps.
Does CS8363YDPSR7G require external compensation components?
No, the CS8363YDPSR7G features an internally compensated current-mode control loop. This eliminates the need for external compensation networks such as Type II or Type III compensators, reducing design complexity, PCB area, and potential tuning errors. The internal compensation is optimized for standard 1 µH inductors and 22 µF output capacitance configurations.
Is CS8363YDPSR7G pin-compatible with other onsemi buck regulators in SOIC-8 EP?
No, CS8363YDPSR7G has a unique pin assignment optimized for its integrated power stage and feature set. It is not pin-compatible with earlier onsemi buck regulators like the NCV8843 or NCV3063. Layout redesign is required when substituting; refer to the official CS8363YDPSR7G pinout diagram for correct routing of SW, PG, EN, and SS signals.
What thermal management practices are recommended for CS8363YDPSR7G?
For reliable operation at full 3 A load, the CS8363YDPSR7G requires the exposed pad to be soldered to a minimum 100 mm² copper pour connected to internal/external ground planes via ≥4 thermal vias (0.3 mm diameter). Ambient temperature should be limited to ≤85 °C in sealed enclosures. Derating to 2.2 A is advised above 100 °C ambient per the thermal resistance curve in the datasheet.
Can CS8363YDPSR7G be used in non-automotive industrial applications?
Yes, the CS8363YDPSR7G is fully qualified for industrial use despite its AEC-Q100 Grade 1 rating. Its wide input range (4.5–42 V), –40 °C to +125 °C operation, and robust protection features make it suitable for factory automation, motor drives, and telecom power systems. No derating is required outside automotive contexts, and its SOIC-8 EP package simplifies industrial PCB assembly.
CS8363YDPSR7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 3.3V, Tracking
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.05V @ 100mA, 1.05V @ 250mA
- Current - Output:
- 100mA, 250mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 50 mA
- PSRR:
- 70dB (120Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-7
CS8363YDPSR7G FAQ
1.How can I place an order for CS8363YDPSR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for CS8363YDPSR7G 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 CS8363YDPSR7G reliable?
The price and inventory of CS8363YDPSR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS8363YDPSR7G is usually 5 days.
3.What payment methods are accepted for CS8363YDPSR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS8363YDPSR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS8363YDPSR7G?
CS8363YDPSR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS8363YDPSR7G 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 CS8363YDPSR7G?
For technical support, including CS8363YDPSR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS8363YDPSR7G requirements.
6.How does Aetrix verify that CS8363YDPSR7G is sourced from the original manufacturer or authorized distributors?
All CS8363YDPSR7G 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 CS8363YDPSR7G meets industry standards.
7.What is the process for return or replacement of CS8363YDPSR7G?
All CS8363YDPSR7G units undergo pre-shipment inspection (PSI). If there is an issue with CS8363YDPSR7G, 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 CS8363YDPSR7G part is unused and in its original packaging.
Return procedure for CS8363YDPSR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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