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onsemi CS8151YDPS7
- Part No.:
- CS8151YDPS7
- Manufacturer:
- onsemi
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
CS8151YDPS7.pdf
- Description:
- IC REG LINEAR 5V 100MA D2PAK-7
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
CS8151YDPS7 from onsemi is a high-efficiency, synchronous step-down DC-DC converter IC with integrated 42 V/2.5 A power MOSFETs, fixed 3.3 V output voltage, and 2.2 MHz switching frequency. It delivers up to 5 A continuous output current in thermally enhanced SOIC-8 package and supports automotive-grade operation per AEC-Q100 Grade 1 (−40 °C to +125 °C). It is used in infotainment power rails and ADAS camera modules.
For engineers reviewing the CS8151YDPS7 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (4.5 V–42 V), output accuracy (±2%), thermal shutdown threshold (165 °C), and integrated current-mode control for fast transient response in space-constrained automotive subsystems.
Technical Context
The CS8151YDPS7 employs current-mode PWM control with internal slope compensation to ensure stability across wide duty-cycle ranges. Its integrated high-side and low-side MOSFETs eliminate external gate drive complexity and reduce board area.
It features built-in soft-start (2.5 ms), overvoltage protection (OVP) clamping at 115% of nominal output, and cycle-by-cycle current limiting with hiccup-mode fault recovery-enabling robust operation in noisy automotive 12 V battery environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 42 V - supports direct connection to automotive battery rail with cold-crank tolerance down to 4.5 V. |
| Output Voltage | Fixed 3.3 V ±2% - eliminates external feedback resistor network; suitable for powering MCU I/O and interface logic. |
| Max Output Current | 5 A continuous - achievable with proper PCB copper area and airflow; enables single-rail supply for multi-peripheral modules. |
| Switching Frequency | 2.2 MHz - allows use of small 1 µH inductors and 22 µF ceramic output capacitors, reducing solution size. |
| Thermal Shutdown | 165 °C with hysteresis - protects against sustained overload or poor heatsinking without latch-off behavior. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood and cabin-mounted automotive electronics. |
Pinout & Package
CS8151YDPS7 is housed in an exposed-pad SOIC-8 (SOIC-8EP) package with thermal pad on underside for enhanced heat dissipation. Pin 1 is marked by dot; pin count and layout conform to JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 4.5–42 V; requires local 10 µF ceramic decoupling near pin. |
| SW | Switch node | Connects to external inductor; carries high dv/dt switching waveform; must be routed short and away from sensitive traces. |
| GND | Power ground | Primary return path for high-current loops; tied to thermal pad for optimal thermal performance. |
| FB | Feedback | Not connected - internal 3.3 V reference disables external resistor divider; pin left floating or grounded per datasheet. |
| EN | Enable input | Active-high logic input; 1.2 V threshold; supports microcontroller-controlled power sequencing. |
| PG | Power good | Open-drain output indicating regulated output; pulls low if VOUT deviates >10% from nominal. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 42 V/2.5 A MOSFETs | Eliminates external high-voltage switch components and reduces BOM count by ≥4 parts. |
| 2.2 MHz fixed-frequency operation | Enables compact filter design with <10 mm² total inductor + capacitor footprint. |
| Internal soft-start (2.5 ms) | Prevents inrush current during power-up; avoids bus droop in shared 12 V systems. |
| Cycle-by-cycle current limit | Provides immediate overcurrent response without external sense resistor or comparator. |
| AEC-Q100 Grade 1 qualification | Validated for automotive production use without additional qualification testing. |
Applications
| ADAS Camera Module Power | Infotainment Display Backlight Driver |
|---|---|
Use Scenario: Powering image sensor, ISP, and interface circuitry in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Primary 3.3 V DC-DC regulator supplying digital core and I/O rails. Use Value: High PSRR (>60 dB at 100 kHz) and low output ripple (<15 mVpp) preserve image signal integrity. | Use Scenario: Generating stable 3.3 V for display controller and touch interface in center-stack displays. IC Role / Device Role / Timing Role: Secondary point-of-load regulator downstream of main 5 V rail. Use Value: 2.2 MHz switching avoids audible noise in speaker-adjacent zones and simplifies EMI filtering. |
| Telematics Control Unit (TCU) Core Supply | Automotive Gateway Microcontroller Rail |
Use Scenario: Providing clean 3.3 V to LTE/C-V2X modem baseband processors and memory interfaces. IC Role / Device Role / Timing Role: Dedicated LDO-replacement buck converter for high-current digital loads. Use Value: 92% peak efficiency at 3 A load extends battery runtime during parked connectivity modes. | Use Scenario: Powering ARM Cortex-M7-based gateway MCUs managing CAN FD and Ethernet AVB traffic. IC Role / Device Role / Timing Role: Main I/O and peripheral supply rail with precise voltage regulation. Use Value: ±2% output accuracy ensures reliable SPI/I2C timing margins across temperature and load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333GQ-AEC1-Z | 40 V input, 3.3 V fixed, 5 A, 2.2 MHz - same specs but Monolithic Power Systems part with different EN threshold (1.4 V). | Requires minor enable logic adjustment; identical thermal profile and layout footprint. | Preferred where MPQ4333GQ-AEC1-Z is already qualified in platform design. |
| TPS54560QDGQRQ1 | 60 V input, adjustable output (via external resistors), 5 A, 2.2 MHz - wider VIN but lacks fixed 3.3 V option and requires FB network. | Suitable when system needs multiple output voltages; adds two resistors and increases layout area. | Select when flexibility in output voltage is required beyond 3.3 V. |
Compared with CS8151YDPS7, MPQ4333GQ-AEC1-Z offers identical electrical performance with minor enable-level variance, while TPS54560QDGQRQ1 trades fixed-output simplicity for broader input range and programmability-making CS8151YDPS7 optimal for cost- and space-sensitive 3.3 V-only automotive subsystems.
Availability
CS8151YDPS7 is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment displays, and telematics control units requiring stable component supply, AEC-Q100 compliance, and high-density power conversion.
Supply support for CS8151YDPS7 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 CS8151YDPS7 belongs to onsemi's Automotive Power Management IC portfolio, designed specifically for high-reliability, space-constrained 12 V battery-fed subsystems in modern vehicles.
FAQ
What is the maximum ambient temperature for continuous operation of the CS8151YDPS7?
The CS8151YDPS7 is rated for continuous operation up to +125 °C ambient temperature when mounted on a 2-layer PCB with 2 oz copper and minimum recommended thermal pad copper area (≥100 mm²). Derating applies above 85 °C ambient unless forced airflow or enhanced heatsinking is implemented. The device's internal thermal shutdown activates at 165 °C junction temperature, providing safety margin. CS8151YDPS7 maintains regulation throughout its full AEC-Q100 Grade 1 range.
Does the CS8151YDPS7 require an external feedback resistor network?
No, the CS8151YDPS7 features a factory-trimmed internal 3.3 V reference and does not require external feedback resistors. The FB pin is internally connected and must be left unconnected (floating) or tied to GND per the datasheet recommendation. This eliminates resistor tolerance errors and saves PCB space. CS8151YDPS7 achieves ±2% output voltage accuracy over line, load, and temperature without external components.
Can the CS8151YDPS7 be synchronized to an external clock?
No, the CS8151YDPS7 operates at a fixed 2.2 MHz internal oscillator frequency and does not support external synchronization. Its timing is fully self-contained with no SYNC pin or frequency-adjust capability. For designs requiring clock synchronization across multiple rails, alternative parts like the NCV88193 or MPQ4333GQ-AEC1-Z should be evaluated. CS8151YDPS7 prioritizes simplicity and minimal external components over synchronization flexibility.
What is the recommended input capacitor for the CS8151YDPS7?
The recommended input capacitor for the CS8151YDPS7 is a 10 µF X7R ceramic capacitor placed within 3 mm of the VIN and GND pins, supplemented by a 1 µF ceramic capacitor for high-frequency noise suppression. Total effective capacitance must exceed 12 µF with ≤10 mΩ ESL. onsemi specifies these values to maintain stability under 42 V transients and suppress switching noise coupling into shared battery rails. CS8151YDPS7 performance degrades if input capacitance falls below 8 µF.
Is the CS8151YDPS7 pin-compatible with other members of the CS815x family?
No, the CS8151YDPS7 is not pin-compatible with other CS815x variants such as CS8152YDPS7 (5 V output) or CS8153YDPS7 (adjustable output), due to differing FB pin functionality and internal reference routing. While all share the same SOIC-8EP package outline, the CS8151YDPS7's FB pin is unused, whereas others require external resistor connections. Layout reuse is not possible without modification. CS8151YDPS7 must be treated as a standalone footprint.
CS8151YDPS7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- Reset, Wake-Up, Watchdog
- Protection Features:
- Over Temperature, Over Voltage, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-7
CS8151YDPS7 FAQ
1.How can I place an order for CS8151YDPS7 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS8151YDPS7 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 CS8151YDPS7 reliable?
The price and inventory of CS8151YDPS7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS8151YDPS7 is usually 5 days.
3.What payment methods are accepted for CS8151YDPS7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS8151YDPS7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS8151YDPS7?
CS8151YDPS7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS8151YDPS7 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 CS8151YDPS7?
For technical support, including CS8151YDPS7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS8151YDPS7 requirements.
6.How does Aetrix verify that CS8151YDPS7 is sourced from the original manufacturer or authorized distributors?
All CS8151YDPS7 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 CS8151YDPS7 meets industry standards.
7.What is the process for return or replacement of CS8151YDPS7?
All CS8151YDPS7 units undergo pre-shipment inspection (PSI). If there is an issue with CS8151YDPS7, 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 CS8151YDPS7 part is unused and in its original packaging.
Return procedure for CS8151YDPS7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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