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TPS92633MPWPR
Texas Instruments
IC LED DRVR LINEAR PWM 20HTSSOP
6215 Pcs New Original In Stock
LED Driver IC 3 Output Linear Constant Current PWM Dimming 20-HTSSOP
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TPS92633MPWPR
Product Overview
10146315
DiGi Electronics Part Number
TPS92633MPWPR-DGManufacturer
Texas Instruments
TPS92633MPWPR
Description
IC LED DRVR LINEAR PWM 20HTSSOPInventory
6215 Pcs New Original In Stock
LED Driver IC 3 Output Linear Constant Current PWM Dimming 20-HTSSOP
Quantity
Minimum 1
Minimum 1
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TPS92633MPWPR Technical Specifications
Category
Power Management (PMIC), LED Drivers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Type
Linear
Topology
Constant Current
Internal Switch(s)
No
Number of Outputs
3
Voltage - Supply (Min)
4.5V
Voltage - Supply (Max)
40V
Voltage - Output
0V ~ 40V
Current - Output / Channel
-
Frequency
-
Dimming
PWM
Applications
General Purpose
Operating Temperature
-55°C ~ 125°C (TA)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package
20-HTSSOP
Base Product Number
TPS92633
Datasheet & Documents
HTML Datasheet
TPS92633MPWPR-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
3 (168 Hours)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-TPS92633MPWPRTR
296-TPS92633MPWPRDKR
296-TPS92633MPWPRCT
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
在DiGi Electronics的購物經歷總是令人愉悅，價格優惠且客服人員熱情周到，讓我感受到真正的價值。
грудня 02, 2025
DiGi Electronics的客服非常友善，也會主動提供使用建議，售後服務一流。
грудня 02, 2025
Leur engagement envers une logistique optimale et une politique tarifaire claire est remarquable.
грудня 02, 2025
Der Kundenservice hat mich überzeugt: schnell, hilfsbereit und sehr freundlich.
грудня 02, 2025
DiGi Electronics' technical support is always available and highly competent.
грудня 02, 2025
The logistics team at DiGi Electronics is remarkably efficient, enabling swift order processing and delivery.
грудня 02, 2025
The product's finish and build quality are truly commendable.
грудня 02, 2025
Reliability and excellent service are the reasons I prefer shopping here.
грудня 02, 2025
My package arrived swiftly, and their support team was extremely helpful.
грудня 02, 2025
Shipping is consistently fast, which I value highly.
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Frequently Asked Questions (FAQ)
Can the TPS92633MPWPR be used to replace an AL5810 or AP3012 in a 12V automotive LED lighting design, and what are the key trade-offs in thermal performance and dimming control?
The TPS92633MPWPR is not a direct drop-in replacement for the AL5810 (Diodes Inc.) or AP3012 (Diodes Inc.) due to fundamental architectural differences: the TPS92633MPWPR is a linear constant-current LED driver with PWM dimming and three independent outputs, while the AL5810 and AP3012 are single-output, adjustable linear regulators with analog dimming. In a 12V automotive system, the TPS92633MPWPR offers superior channel-to-channel matching and built-in PWM dimming at up to 25 kHz, but it will generate more heat than the AL5810 when driving high-current LEDs due to higher dropout voltage and lack of internal power FET optimization. Thermal derating above 85°C ambient must be carefully modeled—especially in sealed housings—since the 20-HTSSOP package has limited heat dissipation. For multi-string applications, the TPS92633MPWPR provides better current regulation across strings, but for single-string, cost-sensitive designs, the AL5810 may offer better thermal efficiency if analog dimming suffices.
What are the critical layout considerations when designing a PCB for the TPS92633MPWPR to avoid current imbalance between its three output channels in high-vibration automotive environments?
To prevent current imbalance between the three output channels of the TPS92633MPWPR in high-vibration automotive applications, ensure symmetrical trace routing from each OUTx pin to its respective LED string with matched length and impedance. Use a solid ground plane beneath the device and connect the exposed thermal pad directly to the ground plane with multiple vias to minimize ground bounce and thermal gradients. Keep sense resistors (if used externally for feedback validation) close to the IC and route them as Kelvin connections to avoid voltage drops from solder joint resistance—critical in vibration-prone environments where micro-fractures can develop. Avoid placing high-di/dt traces (e.g., from nearby switching regulators) near the feedback or dimming control lines, as EMI can induce noise that disrupts the internal current regulation loop, leading to flicker or imbalance.
How does the TPS92633MPWPR handle reverse battery connection in an automotive application, and what external protection circuitry is recommended to meet ISO 16750-2 standards?
The TPS92633MPWPR does not include internal reverse battery protection. If subjected to reverse polarity (e.g., -12V), the device can be permanently damaged due to forward-biasing of internal ESD structures and substrate diodes. To comply with ISO 16750-2, add a series Schottky diode (e.g., BAT54S) on the VIN line or use a P-channel MOSFET-based ideal diode circuit for lower voltage drop and power loss. Additionally, include a 40V-rated TVS diode (e.g., SMAJ33A) at the input to clamp load dump transients. Without these protections, reverse voltage events common during jump-starts or wiring errors can cause latent failures or immediate damage, especially problematic in safety-critical lighting systems where reliability is paramount.
Is it safe to operate the TPS92633MPWPR at its maximum 40V supply voltage while driving LEDs with forward voltages close to 38V, and what risks arise from minimal headroom in thermal or transient conditions?
Operating the TPS92633MPWPR at 40V supply with LED strings near 38V forward voltage leaves only 2V of headroom, which risks dropout and current instability under transient conditions such as cold-crank events (where battery voltage can dip to 6V) or load dump (spikes up to 40V). During cold crank, insufficient headroom may cause the driver to lose regulation, leading to LED flicker or dropout. At high ambient temperatures (>105°C), the internal current accuracy degrades, and with minimal voltage margin, even small increases in LED Vf (due to temperature) can push the device into dropout. To mitigate, maintain at least 3–4V headroom under worst-case conditions, or use a pre-regulator (e.g., a buck converter) to stabilize the input. Relying on the full 40V range without margin increases field failure risk in harsh automotive environments.
Can the PWM dimming input on the TPS92633MPWPR be driven directly from a microcontroller GPIO in a 12V automotive system, and what level-shifting or filtering is needed to ensure reliable dimming without introducing flicker or EMI?
The TPS92633MPWPR’s PWM input accepts logic-level signals (1.2V threshold typical), so a 3.3V or 5V GPIO from a microcontroller can drive it directly—but only if the ground reference is shared and the signal path is clean. However, in automotive environments with ground offsets up to ±1V, use a level-shifting buffer (e.g., SN74LVC1T45) or optocoupler (e.g., ACPL-217) for isolation if the MCU and driver are on different power domains. Add a 100Ω series resistor and 1nF capacitor to ground near the PWM pin to form a low-pass filter, reducing high-frequency noise that can cause unintended dimming artifacts or EMI. Avoid long, unshielded PWM traces, as they can act as antennas. For dimming frequencies above 1 kHz, ensure rise/fall times are <100 ns to prevent duty cycle distortion, which leads to visible flicker in LED output.
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TPS92633MPWPR CAD Models
Texas Instruments TPS92633MPWPR PCB symbols & footprints
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