My Inquiry
My Account
onsemi CS8141YDPSR7
- Part No.:
- CS8141YDPSR7
- Manufacturer:
- onsemi
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
CS8141YDPSR7.pdf
- Description:
- IC REG LINEAR 5V 500MA D2PAK-7
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CS8141YDPSR7 from onsemi is a 5.0 V, 500 mA automotive-grade linear regulator with integrated ENABLE, RESET, and watchdog (WDI) functions. It delivers tightly regulated power to microprocessors in harsh environments, featuring 1.25 V dropout at full load, 7.0 mA quiescent current, and 60 V peak transient voltage tolerance. Its D2PAK-7 package supports high-power dissipation in engine control units and body electronics.
For engineers reviewing the CS8141YDPSR7 datasheet, pinout, applications, or equivalent options, key selection criteria include its single-capacitor-programmable watchdog window (64–96 Hz lower threshold), RESET delay (30–65 ms), thermal shutdown at 150°C, and compatibility with automotive battery supply transients up to 60 V.
Technical Context
The CS8141YDPSR7 implements a composite PNP-NPN output stage for low-dropout regulation while maintaining precision via an internal bandgap reference. Its watchdog logic monitors only the lower frequency threshold of the WDI input signal-unlike the CS8140, it ignores upper-frequency violations-making it suitable for systems where software timing jitter must not trigger spurious resets.
RESET activation occurs under three conditions: VOUT falling below 4.5% of nominal for >2.0 s, power-on reset (tPOR = 30–65 ms), or WDI signal dropping below the programmable lower threshold. The open-collector RESET output remains functional down to VOUT = 1.0 V, and ENABLE controls active/sleep mode transitions with 250 µA quiescent current in sleep.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±4.0% - maintains microprocessor core voltage stability across −40°C to +150°C junction temperature. |
| Max Output Current | 500 mA - sufficient to power 8-bit/16-bit MCUs and peripheral logic in automotive ECUs. |
| Dropout Voltage | 1.25 V @ 500 mA - enables operation with VIN as low as 6.25 V, critical during cold-crank battery dips. |
| Watchdog Threshold | 64–96 Hz (lower only) - defines minimum pulse interval for WDI signal; no upper limit enforcement per CS8141 specification. |
| RESET Delay (tPOR) | 30–65 ms - ensures reliable power-on sequencing before MCU firmware execution begins. |
| Quiescent Current | 7.0 mA @ 500 mA load; 250 µA in sleep mode - reduces standby power in always-on vehicle modules. |
| Transient Tolerance | 60 V peak (46 V load dump) - survives ISO 7637-2 Pulse 5a without external clamping. |
Pinout & Package
D2PAK-7 (Case 936AB) surface-mount package with exposed tab electrically connected to GND for thermal and EMI performance. Tab soldering required for thermal management in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts 7.0–26 V DC with 60 V transient immunity. |
| 2 | ENABLE | CMOS-compatible enable input; VOUT active when HIGH ≥3.95 V, disabled when LOW ≤3.5 V. |
| 3 | RESET | Open-collector output; pulls low during undervoltage, power-up, or watchdog timeout; operates down to VOUT = 1.0 V. |
| 4 | GND | Power ground reference; internally tied to tab; requires low-impedance PCB plane for noise immunity. |
| 5 | Delay | Connects external CDELAY capacitor (0.1 µF typical) to set RESET delay and watchdog thresholds. |
| 6 | WDI | Watchdog input; CMOS-compatible; monitored only for frequency below lower threshold (no upper-limit checking). |
| 7 | VOUT | Regulated 5.0 V output; Kelvin sense path available on SO-24L/DIP-14 variants but not on D2PAK-7. |
Key Features
| Feature | Design Value |
|---|---|
| Single-Capacitor Programmability | CDELAY sets tPOR, tWDI(RESET), and fWDI(LOWER) simultaneously-reduces BOM count and layout complexity. |
| Automotive Transient Robustness | Withstands 60 V load-dump transients without external TVS, simplifying front-end protection design. |
| Low-Power Sleep Mode | 250 µA IQ in ENABLE = LOW + WDI timeout state-enables energy-efficient MCU-controlled shutdown sequences. |
| RESET Operation Below 1.0 V Input | RESET remains functional even as VOUT decays to 1.0 V, ensuring deterministic reset assertion during brownout. |
| Thermal & Overvoltage Protection | Auto-shutdown at TJ ≥150°C and VOUT ≥34 V prevents damage during fault conditions in unregulated battery rails. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 16-bit MCU and CAN transceiver in gasoline/diesel engine management system exposed to 125°C under-hood temperatures and 60 V load dumps. IC Role / Device Role / Timing Role: Primary 5 V supply regulator with integrated watchdog supervision and fail-safe RESET signaling. Use Value: Eliminates need for discrete reset IC and external watchdog timer, reducing component count by ≥3 parts and PCB area by 25 mm². | Use Scenario: Supplies power to door module MCU that must wake on RF key-fob signal and enter ultra-low-power sleep between events. IC Role / Device Role / Timing Role: Regulator with ENABLE-controlled active/sleep states and WDI-monitored firmware liveness check. Use Value: Achieves 250 µA sleep current enabling >1-year battery life in 12 V vehicle battery-powered modules. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Transmission Control Unit (TCU) |
Use Scenario: Provides clean 5 V rail to image sensor interface and vision processor in rear-view camera module mounted near exhaust. IC Role / Device Role / Timing Role: Low-noise, low-drift regulator with RESET asserted during VOUT undervoltage or MCU software hang. Use Value: Ripple rejection >60 dB at 120 Hz suppresses alternator noise, preventing image artifacts in video output. | Use Scenario: Powers transmission MCU in automatic gearbox requiring robust operation during gear-shift current surges and battery voltage sag. IC Role / Device Role / Timing Role: High-current (500 mA) regulator with 1.25 V dropout enabling stable 5 V output during 6.5 V cold-crank events. Use Value: Maintains MCU operation down to VIN = 6.25 V, avoiding reset during aggressive shifting under low-battery conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator with watchdog and RESET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CS8141YDPS7 | Same silicon, TO-220-7 package instead of D2PAK-7; RJA = 50°C/W vs. 10–50°C/W (substrate-dependent) for D2PAK-7. | Requires through-hole mounting and heatsink; less suitable for high-density SMT automotive PCBs. | Select CS8141YDPS7 only if legacy through-hole assembly or mechanical mounting constraints prohibit D2PAK-7. |
| TLV70733PDQNR | 3.3 V fixed output, no watchdog or RESET; 200 mA max, 0.25 V dropout; lacks automotive transient rating and temperature range. | Not suitable for 5 V MCU rails or ISO 7637-2 compliance; limited to infotainment peripherals. | Use TLV70733PDQNR only in non-safety-critical, low-power 3.3 V subsystems with benign supply conditions. |
Compared with CS8141YDPS7, the CS8141YDPSR7 offers superior thermal performance in SMT layouts and eliminates through-hole assembly steps; compared with TLV70733PDQNR, it provides full automotive-grade 5 V regulation with integrated safety monitoring-neither is a drop-in replacement due to voltage, feature, and qualification mismatches.
Availability
CS8141YDPSR7 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and transmission control units requiring stable component supply under AEC-Q100 stress testing and automotive PPAP compliance.
Supply support for CS8141YDPSR7 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The CS8140/CS8141 product line was designed specifically for automotive microprocessor power management-integrating regulation, supervision, and watchdog functions into a single IC to reduce system cost and improve reliability in harsh environments.
FAQ
What is the watchdog behavior difference between CS8141YDPSR7 and CS8140?
The CS8141YDPSR7 monitors only the lower frequency threshold of the WDI signal (64–96 Hz), ignoring upper-frequency violations. In contrast, the CS8140 enforces both lower and upper thresholds (64–96 Hz and 218–326 Hz). This makes CS8141YDPSR7 more tolerant of software timing jitter while retaining fail-safe reset on missed watchdog pulses.
Does CS8141YDPSR7 support remote voltage sensing?
No, CS8141YDPSR7 in the D2PAK-7 package does not provide a dedicated Sense pin. Remote sensing is only available on SO-24L and DIP-14 variants (pins 5 and 4 respectively). For D2PAK-7, regulation accuracy relies on low-impedance PCB routing between VOUT and load.
What is the minimum CDELAY capacitor value recommended for CS8141YDPSR7?
The datasheet specifies CDELAY = 0.1 µF as the standard value for tPOR = 47.5 ms (typ) and fWDI(LOWER) = 77 Hz (typ). Using smaller values risks violating minimum RESET delay or watchdog timing margins; 0.1 µF ±10% X7R ceramic is the validated baseline for CS8141YDPSR7 designs.
Can CS8141YDPSR7 operate with input voltage below 7.0 V?
Per absolute maximum ratings, CS8141YDPSR7 supports VIN down to −0.5 V, but regulation is only guaranteed for 7.0–26 V. At VIN < 7.0 V, dropout increases nonlinearly; at VIN = 6.25 V (5.0 V + 1.25 V dropout), output may still regulate at light loads-but not across full temperature or current range per spec.
Is CS8141YDPSR7 qualified to AEC-Q100?
Yes, CS8141YDPSR7 is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient, −40°C to +150°C junction), with test reports covering HTOL, TC, UHAST, and ESD per automotive requirements. This qualification is documented in onsemi's official CS8140/CS8141 automotive reliability report.
CS8141YDPSR7 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:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-7
CS8141YDPSR7 FAQ
1.How can I place an order for CS8141YDPSR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for CS8141YDPSR7 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 CS8141YDPSR7 reliable?
The price and inventory of CS8141YDPSR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CS8141YDPSR7 is usually 5 days.
3.What payment methods are accepted for CS8141YDPSR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CS8141YDPSR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CS8141YDPSR7?
CS8141YDPSR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CS8141YDPSR7 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 CS8141YDPSR7?
For technical support, including CS8141YDPSR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CS8141YDPSR7 requirements.
6.How does Aetrix verify that CS8141YDPSR7 is sourced from the original manufacturer or authorized distributors?
All CS8141YDPSR7 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 CS8141YDPSR7 meets industry standards.
7.What is the process for return or replacement of CS8141YDPSR7?
All CS8141YDPSR7 units undergo pre-shipment inspection (PSI). If there is an issue with CS8141YDPSR7, 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 CS8141YDPSR7 part is unused and in its original packaging.
Return procedure for CS8141YDPSR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CS8141YDPSR7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
