My Inquiry
My Account
Vishay Siliconix SIPQ32434BDN-T1E3
- Part No.:
- SIPQ32434BDN-T1E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
SIPQ32434BDN-T1E3.pdf
- Description:
- LOAD SWITCH W/ PROGRAMMABLE OVP
- Quantity:
- Payment:
- Shipping:
Inventory:2,480
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SIPQ32434BDN-T1E3 from Vishay Siliconix is an automotive-grade single-channel eFuse IC providing programmable overvoltage protection, accurate current limiting (0.5–6 A), and auto-retry fault recovery in a compact 3 mm × 3 mm TDFN10 package. It operates from 2.8 V to 22 V input, features 33 mΩ typical RDS(on), and protects downstream circuits in ADAS, infotainment, and USB power systems.
For engineers reviewing the SIPQ32434BDN-T1E3 datasheet, SIPQ32434BDN-T1E3 pinout, SIPQ32434BDN-T1E3 application, or SIPQ32434BDN-T1E3 equivalent, key selection considerations include its auto-retry OCP behavior (32× soft-start delay), ±7% current limit accuracy, 24 V fixed internal OVP, and PGD power-good reporting with open-drain output.
Technical Context
The SIPQ32434BDN-T1E3 integrates a low-RDS(on) N-channel MOSFET switch with precision current-sense amplifier, adjustable slew-rate control via external CSS capacitor, and dual OVP paths-programmable (via OVP pin) and fixed 24 V (internal VIN monitoring). Its auto-retry response triggers after 32× the programmed soft-start time upon latchable faults, excluding OTP and internal OVP events.
Control logic uses EN/UVLO pin with 1.25 V turn-on threshold and 1.05 V turn-off hysteresis; ILIM/IMON pin sets current limit via resistor (0.6 V reference) and provides real-time current reporting; PGD asserts low for VOUT < 95% VIN or during OC/OT/OV faults. Thermal shutdown activates at 165 °C with 45 °C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 2.8 V to 22 V - supports wide automotive battery and industrial supply rails |
| RDS(on) (typ.) | 33 mΩ at 25 °C - enables low conduction loss and <1 W dissipation at 6 A |
| Current limit range | 0.5 A to 6 A - set by external resistor on ILIM pin with ±7% accuracy |
| OVP modes | Programmable (via OVP pin, 1.2 V threshold) + fixed 24 V (VIN pin) - dual-layer overvoltage defense |
| Fault response | Auto-retry on OCP/UVLO - restarts after 32× soft-start time; latches off only for OTP or internal OVP |
| Operating junction temp. | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood automotive use |
| Package | TDFN10 3 mm × 3 mm wettable flank - enables automated optical solder inspection and thermal reliability |
Pinout & Package
Package: TDFN10 (3 mm × 3 mm), exposed pad connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - VIN | Power switch input | Dual fused input pins reduce trace resistance and improve current sharing |
| 3 - SS | Soft-start timing control | 5 μA constant-current source charges external capacitor to program VOUT slew rate |
| 4 - EN / UVLO | Enable and undervoltage lockout input | Logic-high enable (≥1.25 V); UVLO disables switch if voltage drops below 1.05 V |
| 5 - ILIM / IMON | Current limit setting and monitoring | 0.6 V reference sets OCP threshold; voltage across RSET reports real-time load current |
| 6 - GND | Ground reference | Primary signal and power return; connects to exposed pad |
| 7 - OVP | Programmable overvoltage sense | Resistor divider sets external OVP threshold (1.2 V reference); 45–140 mV hysteresis |
| 8 - PGD | Power-good open-drain flag | Pulled low when VOUT < 95% VIN or during OC/OT/OV faults; requires external pull-up |
| 9, 10 - VOUT | Power switch output | Dual fused output pins minimize voltage drop and enhance current handling |
Key Features
| Feature | Design Value |
|---|---|
| Auto-retry fault recovery | Restarts automatically after 32× soft-start time upon non-OTP/non-OVP faults - eliminates manual reset in inaccessible systems |
| Accurate current limiting | ±7% OCP accuracy across temperature - ensures consistent protection without derating |
| Dual OVP architecture | Separate programmable (OVP pin) and fixed 24 V (VIN pin) thresholds - prevents false trips while guaranteeing hard rail protection |
| Wettable flank TDFN | 3 mm × 3 mm package with solderable side walls - enables AOI-compatible assembly and robust thermal performance |
| ILIM/IMON dual function | Single pin configures current limit and outputs proportional voltage - reduces BOM count and PCB area vs. separate sense resistor |
Applications
| Automotive Infotainment Power Rail | ADAS Camera Module Protection |
|---|---|
Use Scenario: Supplies regulated 5 V/3.3 V to head unit processors, displays, and audio codecs in vehicles with wide battery transients. IC Role / Device Role / Timing Role: eFuse controller managing inrush, OCP, and OVP during cold-crank and load-dump events. Use Value: Prevents system brownouts during hot-plug of USB peripherals and avoids damage from 28 V load-dump spikes using dual OVP paths. | Use Scenario: Powers high-resolution image sensors and ISP SoCs in forward-facing cameras requiring clean, fault-isolated power. IC Role / Device Role / Timing Role: Primary power switch with fast OCP (<1.1 μs) and thermal monitoring for compact camera housings. Use Value: Auto-retry behavior restores vision functionality after transient short circuits without ECU intervention - critical for ASIL-B compliance. |
| USB-C Hub Power Switching | Holdup Power Management |
Use Scenario: Enables/disables VBUS to downstream USB ports in automotive docking stations with dynamic load profiles. IC Role / Device Role / Timing Role: Programmable current-limited switch with PGD feedback to host controller for port status reporting. Use Value: ±7% current limit accuracy allows precise allocation of 3 A per port without oversizing; soft-start prevents USB enumeration failures. | Use Scenario: Maintains backup power to real-time clocks and SRAM during main supply interruption in telematics control units. IC Role / Device Role / Timing Role: Holdup switch with ultra-low quiescent current (230 μA typ.) and fast turn-off (<10 μs) on fault. Use Value: 33 mΩ RDS(on) minimizes voltage drop across holdup capacitor, extending backup runtime by up to 18% vs. higher-RDS(on) alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259472LVR | 40 V max input, 28 mΩ RDS(on), fixed 3.6 A OCP (no resistor programming), no auto-retry - latches on fault | Preferred for high-voltage industrial supplies where latch-off is required for safety interlocks | Select when fixed current limit and fault latching are mandatory; avoid if auto-recovery is needed. |
| MP5418GQZ | 28 V max input, 42 mΩ RDS(on), 0.6–5.5 A programmable OCP, auto-retry with 120 ms fixed delay (not CSS-dependent) | Better suited for consumer electronics with simpler layout constraints and lower thermal demands | Choose for cost-sensitive designs where 33 mΩ RDS(on) and AEC-Q100 qualification are not required. |
Compared with TPS259472LVR and MP5418GQZ, SIPQ32434BDN-T1E3 uniquely combines AEC-Q100 Grade 1 qualification, CSS-programmable auto-retry timing, and dual-path OVP - making it optimal for automotive systems demanding both reliability and autonomous fault recovery.
Availability
SIPQ32434BDN-T1E3 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and USB-C hub power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SIPQ32434BDN-T1E3 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
Vishay Siliconix designs high-performance discrete semiconductors and integrated power solutions, emphasizing ruggedness, precision, and automotive qualification.
The SIPQ32434 series targets automotive power distribution with eFuse functionality - engineered for AEC-Q100 compliance, thermal resilience, and simplified protection circuitry in space-constrained ECUs.
FAQ
What is the key functional difference between SIPQ32434BDN-T1E3 and SIPQ32434ADN-T1E3?
The SIPQ32434BDN-T1E3 implements auto-retry fault recovery: after an overcurrent event (excluding OTP or internal OVP), it automatically restarts after 32× the programmed soft-start time. In contrast, the SIPQ32434ADN-T1E3 latches off permanently until EN or VIN is cycled. This makes SIPQ32434BDN-T1E3 ideal for unattended automotive subsystems where manual reset is impractical.
How is the current limit set and monitored on SIPQ32434BDN-T1E3?
The SIPQ32434BDN-T1E3 sets current limit via a resistor (RSET) from ILIM/IMON pin to GND, using a 0.6 V internal reference - RSET = 0.6 V / ILIM. The same pin provides real-time current reporting: voltage across RSET equals 0.6 V × (ILOAD / ILIM). This dual function eliminates external sense resistors and simplifies diagnostics without compromising OCP accuracy (±7%).
Does SIPQ32434BDN-T1E3 support reverse current blocking?
No, SIPQ32434BDN-T1E3 does not provide active reverse current blocking. Its internal MOSFET is unidirectional and conducts only from VIN to VOUT. For reverse-blocking capability, Vishay offers the SIPQ32433 series - a pin-compatible variant with integrated reverse-blocking FET. SIPQ32434BDN-T1E3 is intended for forward-protection-only applications such as supply-side eFuses in automotive domains.
What are the thermal limitations and protections built into SIPQ32434BDN-T1E3?
SIPQ32434BDN-T1E3 includes over-temperature protection (OTP) that disables the power switch when junction temperature reaches 165 °C. It features 45 °C hysteresis, allowing automatic re-enablement once die temperature falls below 120 °C. The device is characterized for continuous operation from −40 °C to +125 °C junction temperature and has a θJA of 44.8 °C/W - requiring proper PCB copper pour under the exposed pad for reliable thermal performance.
Can SIPQ32434BDN-T1E3 be used with input voltages above 22 V?
SIPQ32434BDN-T1E3 supports continuous operation up to 22 V input but tolerates DC transients up to 28 V on VIN - sufficient for automotive load-dump conditions. Operation above 22 V is not recommended for sustained periods due to increased power dissipation and potential thermal stress. The internal 24 V OVP path remains active at all times and will shut down the switch if VIN exceeds ~25.6 V (max spec), providing fail-safe protection even during overvoltage events.
SIPQ32434BDN-T1E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Package/Case:
- 10-VFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 2.8V ~ 23V
- Voltage - Supply (Vcc/Vdd):
- 2.8V ~ 23V
- Current - Output (Max):
- 6A
- Rds On (Typ):
- 33mOhm
- Input Type:
- Non-Inverting
- Features:
- Power Good, Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Load, Over Temperature, Over Voltage, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
SIPQ32434BDN-T1E3 FAQ
1.How can I place an order for SIPQ32434BDN-T1E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIPQ32434BDN-T1E3 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 SIPQ32434BDN-T1E3 reliable?
The price and inventory of SIPQ32434BDN-T1E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIPQ32434BDN-T1E3 is usually 5 days.
3.What payment methods are accepted for SIPQ32434BDN-T1E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIPQ32434BDN-T1E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIPQ32434BDN-T1E3?
SIPQ32434BDN-T1E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIPQ32434BDN-T1E3 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 SIPQ32434BDN-T1E3?
For technical support, including SIPQ32434BDN-T1E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIPQ32434BDN-T1E3 requirements.
6.How does Aetrix verify that SIPQ32434BDN-T1E3 is sourced from the original manufacturer or authorized distributors?
All SIPQ32434BDN-T1E3 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 SIPQ32434BDN-T1E3 meets industry standards.
7.What is the process for return or replacement of SIPQ32434BDN-T1E3?
All SIPQ32434BDN-T1E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIPQ32434BDN-T1E3, 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 SIPQ32434BDN-T1E3 part is unused and in its original packaging.
Return procedure for SIPQ32434BDN-T1E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SIPQ32434BDN-T1E3 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
