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Renesas UPD166038T1J-E1-AY
- Part No.:
- UPD166038T1J-E1-AY
- Manufacturer:
- Renesas
- Package:
- 12-PowerBSOP (0.295", 7.50mm Width)
- Datasheet:
-
UPD166038T1J-E1-AY.pdf
- Description:
- POWER:INTELLGENT POWER DEVICES
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
UPD166038T1J-E1-AY from Renesas is a dual-channel N-channel high-side intelligent power switch with integrated charge pump, 3.3 V logic-compatible input, proportional load current sensing (KILIS = 2720–4080), short-circuit protection (IL(SC) = 47–75 A), and AEC-Q100 qualification for automotive 14 V DC grounded loads. It delivers 20 mΩ on-resistance per channel at 25 °C and supports flasher driver and LED switching applications.
For engineers reviewing the UPD166038T1J-E1-AY datasheet, UPD166038T1J-E1-AY pinout, UPD166038T1J-E1-AY application, or UPD166038T1J-E1-AY equivalent, this device offers diagnostic feedback via IS pins, active clamp operation for inductive loads, loss-of-ground protection, and thermal toggling with 150 °C absolute shutdown-critical for fail-safe power switching in automotive body control modules.
Technical Context
This IPD integrates two independent high-side channels in a single 12-pin Power HSSOP package, each featuring voltage-controlled input with hysteresis (VIL = 0.8 V, VIH = 2.5 V), dynamic clamp circuitry for inductive load turn-off (Von,clamp = 30–40 V), and dual-stage thermal protection: power-limiting mode triggered by ΔTch ≥ 60 °C and absolute Tch shutdown at 150 °C with 10 °C hysteresis.
The device implements three-tier fault response: latched shutdown for overcurrent (IL(SC)), auto-restarting current limitation under overload (IL(CL) = 33 A), and thermal toggling (IL(TT) = 25 A). Diagnostic output on IS pins provides analog-sense current (IIS = IL/KILIS) or fault-state current (IIS,fault = 3–9.5 mA) depending on SEN pin state and load condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (per channel) | 20 mΩ at 25 °C - enables low conduction loss for 4 A continuous load at 13.5 V supply |
| Overcurrent detection threshold | 47–75 A - triggers immediate latched shutdown to protect against hard short circuits |
| Current sense ratio (KILIS) | 2720–4080 - maps 4.8 A load to 1.18–1.77 mA IS output, enabling precise MCU-based current monitoring |
| Thermal shutdown temperature | 150 °C with 10 °C hysteresis - prevents permanent junction damage during sustained overload |
| Supply voltage range | 4.5–28 V - supports cold-crank (4.5 V) and load-dump (42 V transient) conditions in automotive 12 V systems |
| Logic interface compatibility | 3.3 V CMOS - directly interfaces with modern automotive microcontrollers without level-shifting |
| Inductive energy dissipation (EAS) | 70 mJ single-pulse - sustains turn-off transients from 3.4 Ω inductive loads without external snubber |
Pinout & Package
UPD166038T1J-E1-AY uses a 12-pin Power HSSOP package with exposed VCC tab for thermal dissipation. Pin 1 is GND; pins 10/11 and 8/9 are paired OUT1 and OUT2 outputs respectively; pins 2/5 are IN1/IN2; pins 3/4 are IS1/IS2; pin 7 is SEN; pins 6/12 and tab connect to VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Must be connected through 100 Ω resistor or diode to prevent reverse-current damage during battery reversal |
| 2 (IN1), 5 (IN2) | Channel enable inputs | 3.3 V–compatible logic inputs with hysteresis; pulled down internally to ensure safe default-off state |
| 3 (IS1), 4 (IS2) | Diagnostic current outputs | Provide proportional load current (IIS = IL/KILIS) or fault current (3–9.5 mA) based on load and protection state |
| 6, 12, Tab (VCC) | Power supply & output rail | Supplies logic and power stages; tab enhances thermal transfer to PCB copper area (Rth(ch-c) = 1.1 °C/W) |
| 7 (SEN) | Sense enable control | High enables current sensing; low disables IS output and forces <1 µA leakage for low-power diagnostics |
| 8/9 (OUT2), 10/11 (OUT1) | Protected high-side outputs | Dual-channel outputs with active clamp, cross-current protection, and open-load detection capability |
Key Features
| Feature | Design Value |
|---|---|
| Built-in charge pump | Enables full enhancement of N-channel MOSFETs from 4.5 V supply, eliminating need for external high-side gate driver |
| Proportional load current sensing | Provides real-time analog feedback (KILIS = 2720–4080) for closed-loop current control and predictive diagnostics |
| Active clamp at inductive turn-off | Clamps VOUT to 30–40 V during inductive flyback, preventing voltage overshoot without external components |
| Loss-of-ground protection | Guarantees safe shutdown if GND connection fails while load remains grounded, avoiding uncontrolled output activation |
| Power limitation with ΔTch control | Auto-restarts with current limiting (IL(CL) = 33 A) when junction-to-control-area temperature difference exceeds 60 °C |
| AEC-Q100 qualified | Validated for automotive applications including temperature cycling, humidity, and ESD (2 kV HBM, 4 kV IEC61000-4-2) |
Applications
| Automotive Body Control Module | LED Headlamp Driver |
|---|---|
|
Use Scenario: Centralized switching of multiple 14 V DC grounded loads including door locks, window lifts, and interior lighting in vehicle BCMs. IC Role / Device Role / Timing Role: Dual-channel high-side switch providing fail-safe power delivery with diagnostic feedback to MCU via IS pins. Use Value: Enables single-device control of two independent loads with integrated short-circuit, thermal, and open-load protection-reducing BOM count and improving system reliability. |
Use Scenario: Driving high-brightness LED arrays (35–60 W) requiring precise current regulation and fast fault response. IC Role / Device Role / Timing Role: High-side current-regulated switch with proportional sense output used for real-time LED current monitoring and thermal derating. Use Value: Eliminates need for external shunt resistors and op-amps; built-in clamp and 70 mJ EAS withstands LED inrush and inductive transients without snubbers. |
| Flasher Unit for Turn Signals | Fail-Safe Power Supply Switch |
|
Use Scenario: Controlling incandescent bulb flashers (35–60 W) with cyclic on/off operation and high inrush current tolerance. IC Role / Device Role / Timing Role: Robust high-side switch handling repetitive 47–75 A short-circuit events during bulb cold-start, with auto-recovery via power limitation. Use Value: Sustains repeated thermal stress from bulb filament inrush without latch-up; diagnostic IS output signals flasher status to dashboard controller. |
Use Scenario: Safety-critical power switching in ADAS ECUs where uninterrupted supply integrity must be verified before enabling downstream functions. IC Role / Device Role / Timing Role: Monitored high-side switch providing both power path control and real-time load current telemetry for functional safety (ISO 26262 ASIL-B support). Use Value: Integrated open-load detection (VOUT(OL) = 2.0–5.0 V) and loss-of-ground protection ensure deterministic off-state behavior during wiring faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side intelligent power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon BTS716G | Single-channel, 16 mΩ RDS(on), no proportional current sense-uses digital fault flag only | Lacks analog current feedback; suitable for basic on/off control but not closed-loop current monitoring | Select UPD166038T1J-E1-AY when dual-channel operation and real-time load current telemetry are required. |
| STMicroelectronics VNQ7E100AJTR | Quad-channel, 100 mΩ RDS(on), 5 V logic interface, no ΔTch-based power limitation | Higher on-resistance limits continuous current; lacks thermal gradient protection for repetitive short-circuit robustness | Choose UPD166038T1J-E1-AY for demanding automotive applications requiring 20 mΩ conduction loss and advanced thermal management. |
Compared with BTS716G and VNQ7E100AJTR, UPD166038T1J-E1-AY uniquely combines dual-channel integration, 20 mΩ on-resistance, proportional current sensing, and ΔTch-triggered power limitation-enabling higher efficiency, finer diagnostics, and superior long-term short-circuit survivability in 14 V automotive systems.
Availability
UPD166038T1J-E1-AY is available at Aetrix Electronics and suitable for automotive body control modules, LED headlamp drivers, flasher units, and fail-safe power supply switches requiring stable component supply across production lifecycles.
Supply support for UPD166038T1J-E1-AY 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The UPD166038T1J-E1-AY belongs to Renesas' second-generation Intelligent Power Device family, engineered specifically for robust, diagnostic-rich high-side switching in 12 V/14 V automotive electrical systems.
FAQ
What is the maximum continuous load current supported by UPD166038T1J-E1-AY per channel?
UPD166038T1J-E1-AY supports up to 4 A continuous load current per channel at Tch = 25 °C with proper PCB thermal design (50 mm × 50 mm × 1.5 mm FR4 with 6 cm² copper). Derating applies above 85 °C ambient; the device enters power limitation at 33 A or absolute thermal shutdown at 150 °C junction temperature. Actual usable current depends on layout, airflow, and duty cycle.
How does UPD166038T1J-E1-AY implement open-load detection?
UPD166038T1J-E1-AY detects open-load conditions at OFF-state by monitoring VOUT: when input is low and VOUT rises above 2.0–5.0 V (e.g., due to leakage or floating load), the IS pin outputs IIS,fault after a 300 µs delay. This allows MCU-based diagnostics without external comparators or pull-up networks.
Can UPD166038T1J-E1-AY drive inductive loads such as solenoids or relays?
Yes, UPD166038T1J-E1-AY is designed for inductive loads: its integrated dynamic clamp circuit limits VOUT to 30–40 V during turn-off, dissipating up to 70 mJ per pulse. For repetitive switching, ensure EAR ≤ 35 mJ and use recommended 50–100 nF parallel capacitors at OUT pins to suppress ringing.
What is the role of the SEN pin on UPD166038T1J-E1-AY?
The SEN pin on UPD166038T1J-E1-AY enables or disables current sensing: when high, IS pins output proportional load current (IIS = IL/KILIS); when low, IS pins sink <1 µA leakage current. This allows time-multiplexed diagnostics or low-power sleep modes without disconnecting sense resistors.
Is UPD166038T1J-E1-AY compatible with 3.3 V microcontrollers without level shifting?
Yes, UPD166038T1J-E1-AY features 3.3 V–compatible logic inputs (VIL = 0.8 V max, VIH = 2.5 V min) and operates with input voltages from 0 to 16 V. Its internal pull-down ensures safe default-OFF behavior even when MCU pins float during reset or deep sleep.
UPD166038T1J-E1-AY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 12-PowerBSOP (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- Logic
- Voltage - Load:
- 4.5V ~ 28V
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 28V
- Current - Output (Max):
- 33A
- Rds On (Typ):
- 20mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled
- Fault Protection:
- Current Limiting (Fixed), Open Load Detect, Over Load, Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-HSSOP
UPD166038T1J-E1-AY FAQ
1.How can I place an order for UPD166038T1J-E1-AY through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD166038T1J-E1-AY 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 UPD166038T1J-E1-AY reliable?
The price and inventory of UPD166038T1J-E1-AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD166038T1J-E1-AY is usually 5 days.
3.What payment methods are accepted for UPD166038T1J-E1-AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD166038T1J-E1-AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD166038T1J-E1-AY?
UPD166038T1J-E1-AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD166038T1J-E1-AY 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 UPD166038T1J-E1-AY?
For technical support, including UPD166038T1J-E1-AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD166038T1J-E1-AY requirements.
6.How does Aetrix verify that UPD166038T1J-E1-AY is sourced from the original manufacturer or authorized distributors?
All UPD166038T1J-E1-AY 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 UPD166038T1J-E1-AY meets industry standards.
7.What is the process for return or replacement of UPD166038T1J-E1-AY?
All UPD166038T1J-E1-AY units undergo pre-shipment inspection (PSI). If there is an issue with UPD166038T1J-E1-AY, 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 UPD166038T1J-E1-AY part is unused and in its original packaging.
Return procedure for UPD166038T1J-E1-AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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