My Inquiry
My Account
Texas Instruments LM536023QPWPRQ1
- Part No.:
- LM536023QPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM536023QPWPRQ1.pdf
- Description:
- IC REG BUCK 3.3V 2A 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,704
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM536023QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering up to 2 A at 3.3 V or 5 V from a 3.5–36 V input, featuring 2.1 MHz fixed switching frequency, ±2% output voltage tolerance, and integrated reset with 2–4 ms assertion delay. It operates in navigation/GPS and instrument cluster power rails where transient immunity to 42 V and junction temperature range of –40°C to 150°C are critical.
For engineers reviewing the LM536023QPWPRQ1 datasheet, LM536023QPWPRQ1 pinout, LM536023QPWPRQ1 application, or LM536023QPWPRQ1 equivalent, key selection considerations include its 2 A current rating (vs. 3 A LM53603-Q1), HTSSOP-16 thermal performance (RθJA = 42.5°C/W), FPWM mode control, and built-in loop compensation eliminating external feedback dividers for fixed-output variants.
Technical Context
The LM536023QPWPRQ1 implements current-mode control with automatic PWM/PFM transition and user-selectable forced PWM (FPWM) mode, enabling stable regulation across light-to-heavy loads while maintaining 2.1 MHz operation under nominal conditions. Its valley-current limiting architecture protects against overloads and short circuits via programmable low-side switch current threshold (2.0–2.8 A).
It integrates a 3.15 V internal VCC regulator, BIAS pin for output-voltage-referenced biasing, and open-drain RESET with glitch filtering (12–45 µs) and 2–4 ms activation delay-ensuring accurate power-good signaling without external supervision. The device supports external synchronization (1.9–2.3 MHz) and withstands 42 V transients ≤500 ms at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2 A maximum continuous load - defines usable power envelope for compact automotive subsystems like HUD display logic rails. |
| Input Voltage Range | 3.5 V to 36 V, with 42 V transient tolerance ≤500 ms - eliminates need for upstream TVS clamping in 12 V/24 V vehicle architectures. |
| Switching Frequency | 2.1 MHz fixed (1.85–2.35 MHz over temp/vin) - enables use of small, low-profile inductors (e.g., 1–2.2 µH) and reduces EMI filter size. |
| Output Voltage Options | Fixed 3.3 V or 5 V (no external divider required); ADJ option supports 3.3–6 V - simplifies BOM and layout for standard logic supply domains. |
| Quiescent Current | 24 µA at no load (typical) - sustains >10-year battery standby life in always-on modules such as telematics wake-up circuitry. |
| Reset Accuracy | 94.5–96.5% falling threshold relative to actual VOUT - provides tighter system-level power-good margin than discrete supervisors. |
| Thermal Rating | Junction temperature range –40°C to +150°C - qualified for under-hood placement near ECUs and ADAS sensor hubs. |
Pinout & Package
LM536023QPWPRQ1 uses a thermally enhanced 16-pin HTSSOP package (5.00 mm × 4.40 mm × 1.00 mm) with exposed die paddle (EP) for PCB-level heat sinking and noise reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (1,2) | Switch node | Connects directly to inductor; pins 1 & 2 must be shorted on PCB to minimize parasitic inductance in high-di/dt path. |
| CBOOT (3) | Bootstrap supply | Requires 470 nF ceramic capacitor to SW; enables high-side NMOS gate drive above VIN during each switching cycle. |
| VCC (4) | Internal regulator output | 3.15 V supply for control circuitry; decoupled with 3.3 µF X7R capacitor to AGND - not for external loading. |
| BIAS (5) | Bias reference input | Connected to regulated output (e.g., VOUT); powers internal LDO - improves efficiency by reducing VCC dropout losses. |
| SYNC (6) | Frequency sync input | Accepts external clock (1.9–2.3 MHz); when unused, must be grounded - prevents EMI beating with other system clocks. |
| FPWM (7) | Forced PWM mode control | High = fixed-frequency PWM; Low = auto PFM/PWM transition - used to eliminate audible noise or ensure deterministic timing. |
| RESET (8) | Open-drain power-good flag | Asserts high after 2–4 ms delay when VOUT reaches 94.5–96.5% of setpoint; requires external pull-up resistor. |
| FB (9) | Feedback input | Direct connection to 3.3 V/5 V output (no divider); for ADJ version, connects to resistor divider tap - sets regulation point. |
| AGND (10) | Analog ground reference | Reference for FB, EN, FPWM, SYNC; must tie to EP and PGND at single-point star ground to avoid noise coupling. |
| EN (11) | Enable input | Logic-high ≥2 V enables regulator; ≤0.8 V disables - supports direct connection to microcontroller GPIO or ignition-sensed rail. |
| VIN (12,13) | Main input supply | 3.5–36 V input; pins 12 & 13 must be shorted on PCB and bypassed with low-ESR ceramic capacitors near package. |
| N/C (14) | No connect | Internally unconnected - leave floating or ground per layout best practice; no electrical function. |
| PGND (15,16) | Power ground return | Low-side MOSFET source return; ties to AGND and system ground plane; pins 15 & 16 must be shorted on PCB. |
| EP (17) | Exposed thermal pad | Must be soldered to solid copper thermal plane - accounts for >75% of total heat dissipation; critical for RθJC(bot) = 1.1°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated loop compensation | Eliminates 4–6 external RC components typically needed for type-II/type-III compensation - reduces layout area and tuning effort. |
| Automatic light-load PFM mode | Reduces no-load input current to 24 µA (typical), improving efficiency at <10 mA loads - essential for always-on automotive modules. |
| Built-in soft-start | 2 ms typical ramp time prevents output overshoot and inrush current spikes - avoids brownout in downstream logic during cold cranking. |
| Valley current limit protection | 2.0–2.8 A low-side current threshold triggers hiccup mode (5.5 ms off-time) during sustained overload - prevents thermal runaway. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, HBM ±2500 V (I/O pins), CDM ±750 V - meets functional safety requirements for ASIL-B systems. |
Applications
| Navigation/GPS Module Power | Instrument Cluster Display Supply |
|---|---|
Use Scenario: Powers GPS baseband processor, RF front-end, and memory in automotive infotainment head units operating across cold-crank (4.5 V) to load-dump (42 V) conditions. IC Role / Device Role / Timing Role: Primary 3.3 V/2 A DC-DC regulator providing clean, regulated rail with fast transient response to handle burst-mode GNSS signal acquisition. Use Value: 2.1 MHz switching enables compact 1.5 µH inductor and 22 µF ceramic output cap - fits tight space constraints behind dashboard displays. |
Use Scenario: Supplies TFT-LCD timing controller and backlight driver ICs in digital instrument clusters requiring stable 5 V at up to 1.8 A. IC Role / Device Role / Timing Role: Fixed 5 V buck converter with integrated RESET flag used for MCU power-good sequencing and fault reporting to body control module. Use Value: Built-in 2–4 ms RESET assertion delay and 12–45 µs glitch filter prevent false resets during ignition transients - eliminates need for external supervisor IC. |
| ADAS Camera Sensor Bias Rail | HUD Projection Unit Logic Supply |
Use Scenario: Generates 3.3 V bias for CMOS image sensor and ISP in forward-facing ADAS cameras mounted near windshield. IC Role / Device Role / Timing Role: Automotive-grade step-down regulator with –40°C to +125°C junction rating, supporting operation in high-ambient under-glass environments. Use Value: 42 V transient tolerance allows direct connection to vehicle battery without additional surge protection - reduces BOM cost and board area. |
Use Scenario: Delivers 5 V/1.5 A to DMD controller, LED driver, and microcontroller in head-up display units subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Synchronous buck converter with FPWM mode enabled to suppress audible coil whine during driver alerts and HUD brightness transitions. Use Value: Forced PWM mode ensures constant 2.1 MHz switching - avoids beat frequencies with display pixel clock and simplifies EMI filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM53603QPWPRQ1 | 3 A output current, higher peak/valley current limits (4.5/3.6 A), identical pinout and features | Supports higher-power loads such as radar SoCs or multi-display controllers | Select when >2 A continuous load or higher short-circuit robustness is required; same PCB layout but larger inductor/capacitor ratings needed. |
| TPS54360BQDDAQ1 | 3.5–60 V input, 3.5 A output, adjustable frequency (100 kHz–2.5 MHz), no integrated RESET | Lacks built-in power-good flag and BIAS pin optimization; requires external feedback divider for all outputs | Choose for wider input range or programmable frequency; add external supervisor if RESET functionality is mandatory. |
Compared with LM53603QPWPRQ1, LM536023QPWPRQ1 offers lower current capability but identical thermal, timing, and protection features - making it optimal for cost- and space-constrained 2 A applications. Versus TPS54360BQDDAQ1, it trades input voltage headroom for integrated RESET and simplified fixed-output design - reducing component count in standardized 3.3 V/5 V automotive rails.
Availability
LM536023QPWPRQ1 is available at Aetrix Electronics and suitable for navigation/GPS modules, instrument clusters, ADAS camera systems, and HUD projection units requiring stable component supply with AEC-Q100 compliance and long-term automotive lifecycle support.
Supply support for LM536023QPWPRQ1 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive power management ICs and functional safety-certified solutions.
The LM5360x-Q1 product line delivers wide-input, high-efficiency synchronous buck regulators optimized for automotive subsystems including infotainment, ADAS, and body electronics - emphasizing transient robustness, thermal reliability, and integration to reduce system complexity.
FAQ
What is the maximum output current rating of the LM536023QPWPRQ1?
The LM536023QPWPRQ1 is rated for a continuous output current of 2 A. This value is validated across the full –40°C to +125°C ambient temperature range and accounts for thermal derating under worst-case PCB layout and airflow conditions. Peak current capability reaches 2.8 A (valley limit) before hiccup-mode protection activates. The LM536023QPWPRQ1 shares identical thermal metrics and package with the 3 A LM53603-Q1 variant but uses lower-current MOSFETs internally.
Does the LM536023QPWPRQ1 require external feedback resistors for 3.3 V or 5 V output?
No, the LM536023QPWPRQ1 does not require external feedback resistors when configured for fixed 3.3 V or 5 V output. Its FB pin is internally connected to precision voltage dividers matching those output levels, achieving ±2% regulation accuracy without external components. External resistors are only needed for the ADJ version, where the output is set between 3.3 V and 6 V using a resistor divider network tied to FB and AGND.
How does the RESET function behave during input transients on the LM536023QPWPRQ1?
The LM536023QPWPRQ1 RESET output remains valid during input transients down to 1.5 V on VIN, even when EN is low. It incorporates a 12–45 µs glitch filter to reject sub-microsecond output voltage excursions and a 2–4 ms assertion delay after VOUT stabilizes within 94.5–96.5% of its nominal value. This dual-stage filtering prevents false resets during cold-crank dips or load-dump recovery, ensuring reliable power-good signaling in automotive environments.
Can the LM536023QPWPRQ1 operate with an input voltage below 3.5 V?
No, the LM536023QPWPRQ1 has a minimum operating input voltage of 3.5 V for proper regulation. Below this threshold, the device enters undervoltage lockout (UVLO) and shuts down. The datasheet specifies VIN-operate rising at 3.95 V (typical), with hysteresis of ~0.4 V. For 3.3 V output, the minimum input to maintain regulation is 3.9 V at full 2 A load - meaning the LM536023QPWPRQ1 cannot regulate 3.3 V from a 3.3 V source.
What thermal management practices are recommended for the LM536023QPWPRQ1 in high-temperature environments?
For reliable operation above 85°C ambient, the LM536023QPWPRQ1 requires direct thermal connection of its exposed paddle (EP) to a minimum 200 mm² internal or external copper pour, with ≥4 thermal vias (0.3 mm diameter) connecting to inner ground planes. Use of 2 oz copper and solder mask defined pads improves heat transfer. Derate output current by 10% per 10°C above 85°C ambient when RθJA exceeds 42.5°C/W due to limited airflow - verified per JEDEC JESD51-7 4-layer board standards.
LM536023QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.9V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
LM536023QPWPRQ1 FAQ
1.How can I place an order for LM536023QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM536023QPWPRQ1 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 LM536023QPWPRQ1 reliable?
The price and inventory of LM536023QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM536023QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for LM536023QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM536023QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM536023QPWPRQ1?
LM536023QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM536023QPWPRQ1 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 LM536023QPWPRQ1?
For technical support, including LM536023QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM536023QPWPRQ1 requirements.
6.How does Aetrix verify that LM536023QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All LM536023QPWPRQ1 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 LM536023QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of LM536023QPWPRQ1?
All LM536023QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM536023QPWPRQ1, 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 LM536023QPWPRQ1 part is unused and in its original packaging.
Return procedure for LM536023QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM536023QPWPRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
