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Texas Instruments TPS62850120QDRLRQ1
- Part No.:
- TPS62850120QDRLRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-583
- Datasheet:
-
TPS62850120QDRLRQ1.pdf
- Description:
- IC REG BUCK ADJ 1A SOT583
- Quantity:
- Payment:
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Product details
Overview
TPS62850120QDRLRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering 1A continuous output current, operating from 2.7V to 6V input, with adjustable 0.6V–5.5V output voltage, ±1% PWM accuracy, and 17µA quiescent current-designed for ADAS camera power rails requiring low EMI and precise sequencing.
For engineers reviewing the TPS62850120QDRLRQ1 datasheet, TPS62850120QDRLRQ1 pinout, TPS62850120QDRLRQ1 application, or TPS62850120QDRLRQ1 equivalent, key selection criteria include its SOT583 package footprint, absence of active output discharge, fixed 1ms soft-start, and compatibility with 2×10µF ceramic output capacitance in infotainment and sensor fusion systems.
Technical Context
The TPS62850120QDRLRQ1 implements peak current mode control with internal compensation selectable via COMP/FSET pin configuration, supporting externally adjustable switching frequency from 1.8MHz to 4MHz or synchronization to external clock. Its control loop is optimized for stable operation with low-ESR ceramic capacitors as small as 8µF at VOUT ≥ 3.3V.
It features a precise ENABLE input with 1.1V rising threshold enabling user-defined UVLO and exact power-up sequencing, and a MODE/SYNC pin that selects between forced PWM (high) or automatic PWM/PFM (low) operation-while also accepting external sync signals in the same 1.8–4MHz range with <50µs lock time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports wide automotive battery rail including cold-crank (≥2.7V) and load-dump transient margins. |
| Output Current | 1A continuous - rated for sustained operation up to TJ = 150°C with thermal shutdown at 170°C. |
| Output Voltage Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive analog/digital loads like image sensors and SerDes interfaces. |
| Quiescent Current | 17µA typical - enables ultra-low standby power in always-on ADAS modules without compromising wake-up latency. |
| Switching Frequency | 1.8MHz to 4MHz adjustable - allows EMI optimization and compact filter design using sub-1µH inductors. |
| Soft-Start Time | Internal 1ms - prevents inrush current during power-up while maintaining deterministic timing for system sequencing. |
| Power-Good Output | Open-drain window comparator - asserts high-impedance only when VOUT is within ±5% of target, enabling reliable downstream enable sequencing. |
Pinout & Package
SOT583 (DRL) package: 2.10mm × 1.60mm body size with 8 terminals, thermally enhanced bottom-side pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7–6V supply; requires local 10µF input capacitance placed adjacent to minimize high-frequency noise coupling. |
| SW | Switch node | Connects to external 0.47µH inductor; carries high di/dt; must be routed short and wide to reduce EMI and voltage spikes. |
| GND | Ground reference | Primary return path for power and control circuits; tied directly to thermal pad for optimal thermal performance. |
| EN | Enable control | Logic-compatible input with 1.1V rising threshold; supports RC delay networks for programmable undervoltage lockout and power sequencing. |
| PG | Power-good indicator | Open-drain output requiring external pull-up; asserts low during UVLO, thermal shutdown, soft-start, or VOUT out-of-regulation. |
| FB | Feedback input | Monitors resistive divider output; sets VOUT = 0.6V × (1 + R1/R2); leakage <70nA preserves accuracy across temperature. |
| COMP/FSET | Compensation & frequency set | Resistor-to-GND configures both control-loop compensation and switching frequency; tied to GND for 2.25MHz fixed operation. |
| MODE/SYNC | Operating mode control | Pulled high for forced PWM; pulled low for auto PWM/PFM; accepts external 1.8–4MHz sync clock with falling-edge alignment to SW. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements for front-end camera ECUs. |
| No active output discharge | Disables internal discharge FET - preserves output voltage during shutdown for systems requiring hold-up or controlled power-down sequences. |
| Adjustable spread-spectrum clocking | Reduces peak EMI emissions by dithering switching frequency up to 288kHz above nominal - aids CISPR 25 Class 5 compliance without added filtering. |
| 100% duty-cycle capability | Enables dropout operation down to VIN ≈ VOUT - critical for low-VIN scenarios such as battery-powered parking cameras during engine-off states. |
| Integrated foldback overcurrent protection | Current limit disabled per device table - simplifies fault response in systems where constant-current limiting is not required. |
Applications
| ADAS Camera Power Supply | Surround View ECU Core Rail |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in forward-facing ADAS camera module under automotive battery conditions including cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Primary 1.2V or 1.8V core regulator delivering 1A with ±1% accuracy and 17µA IQ to maintain always-on wake-up readiness. Use Value: Enables fast startup (<1ms soft-start), low-noise operation, and seamless transition between PWM/PFM modes to sustain >90% efficiency from 1mA to 1A load. | Use Scenario: Supplies processor SoC and video interface in multi-camera surround-view electronic control unit with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency (2.25MHz) synchronous buck providing 3.3V or 5V rail with external clock synchronization to avoid beat frequencies with display or MIPI clock domains. Use Value: Reduces conducted EMI through pseudo-random spread spectrum and supports precise timing alignment via MODE/SYNC pin for deterministic system-level noise management. |
| Hybrid Cluster Display Logic | Telematics Control Unit Memory Rail |
Use Scenario: Generates configurable logic voltage (e.g., 1.1V, 1.2V, 1.8V) for reconfigurable digital cluster ASICs requiring dynamic voltage scaling. IC Role / Device Role / Timing Role: Adjustable-output buck converter with precise ENABLE sequencing to coordinate power-up with MCU reset and GPU initialization. Use Value: Achieves exact power-on timing via EN threshold control and supports 100% duty cycle to maintain regulation during brown-out events below 3V. | Use Scenario: Provides stable 1.2V DDR memory supply in telematics gateway with CAN FD and cellular modem coexistence. IC Role / Device Role / Timing Role: Low-EMI, high-efficiency step-down regulator with PG output used to gate downstream LDOs and memory controller enable signals. Use Value: Ensures robust power-good assertion only when VOUT is within ±5% window, preventing premature memory initialization and data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6285011HQDRLRQ1 | Fixed 3.3V output; includes active output discharge; identical SOT583 package and pinout. | Used where fast output discharge is required after shutdown (e.g., FPGA I/O banks), not applicable for hold-up scenarios. | Select when fixed 3.3V output and active discharge are needed; otherwise TPS62850120QDRLRQ1 offers full adjustability without discharge. |
| TPS628501B0QDRLRQ1 | Same adjustable output but with 150µs soft-start (vs. 1ms); identical no-discharge feature and SOT583 footprint. | Preferred in systems needing faster power-up (e.g., driver-monitoring cameras with strict boot-time budgets). | Choose for reduced soft-start duration while retaining all other functional attributes of TPS62850120QDRLRQ1. |
Compared with TPS6285011HQDRLRQ1 and TPS628501B0QDRLRQ1, the TPS62850120QDRLRQ1 uniquely combines fully adjustable output voltage, 1ms soft-start, and no active discharge-making it optimal for ADAS camera rails requiring voltage flexibility, controlled ramp-up, and output hold-up during sleep transitions.
Availability
TPS62850120QDRLRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, surround-view ECUs, hybrid instrument clusters, telematics control units, and external amplifier power supplies requiring stable component supply across automotive production lifecycles.
Supply support for TPS62850120QDRLRQ1 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 deep expertise in automotive-grade power management ICs.
The TPS62850x-Q1 product line delivers high-efficiency, low-EMI, AEC-Q100-compliant buck converters specifically engineered for advanced driver assistance systems and infotainment subsystems demanding precision, reliability, and functional safety readiness.
FAQ
What is the output voltage range supported by the TPS62850120QDRLRQ1?
The TPS62850120QDRLRQ1 supports an adjustable output voltage range from 0.6V to 5.5V, set via an external resistor divider on the FB pin. Its feedback reference voltage is precisely 0.6V with ±1% accuracy in PWM mode, enabling accurate regulation for diverse loads including image sensors, processors, and memory interfaces. Fixed-output variants exist, but TPS62850120QDRLRQ1 is the adjustable version.
Does the TPS62850120QDRLRQ1 include active output discharge?
No, the TPS62850120QDRLRQ1 does not include active output discharge. Per the Device Comparison Table, its "VOUT DISCHARGE" field is marked "OFF". This means the internal discharge FET remains disabled, allowing the output capacitor to retain voltage after shutdown-critical for systems requiring hold-up time or controlled power-down sequences.
What package type and pin count does the TPS62850120QDRLRQ1 use?
The TPS62850120QDRLRQ1 uses the SOT583 (DRL) package: an 8-pin, thermally enhanced surface-mount package with 2.10mm × 1.60mm body size (including pins). It features an exposed thermal pad on the bottom for improved PCB heat dissipation and is pin-compatible with other members of the TPS62850x-Q1 family in the same DRL variant.
How is the switching frequency configured on the TPS62850120QDRLRQ1?
The switching frequency of the TPS62850120QDRLRQ1 is configured via the COMP/FSET pin: a resistor from COMP/FSET to GND sets frequency from 1.8MHz to 4MHz and selects internal compensation. Alternatively, tying COMP/FSET to GND yields a fixed 2.25MHz frequency. The MODE/SYNC pin also accepts external 1.8–4MHz clock signals for synchronization, with <50µs lock time.
What is the soft-start duration of the TPS62850120QDRLRQ1?
The TPS62850120QDRLRQ1 features an internal soft-start duration of 1ms, as confirmed in the Device Comparison Table. This fixed timing begins when EN is asserted and ends when the output reaches regulation and the PG signal asserts high-impedance. No external components are required to configure this value.
TPS62850120QDRLRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-583
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 1.8MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
TPS62850120QDRLRQ1 FAQ
1.How can I place an order for TPS62850120QDRLRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62850120QDRLRQ1 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 TPS62850120QDRLRQ1 reliable?
The price and inventory of TPS62850120QDRLRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62850120QDRLRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62850120QDRLRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62850120QDRLRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62850120QDRLRQ1?
TPS62850120QDRLRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62850120QDRLRQ1 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 TPS62850120QDRLRQ1?
For technical support, including TPS62850120QDRLRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62850120QDRLRQ1 requirements.
6.How does Aetrix verify that TPS62850120QDRLRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62850120QDRLRQ1 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 TPS62850120QDRLRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62850120QDRLRQ1?
All TPS62850120QDRLRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62850120QDRLRQ1, 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 TPS62850120QDRLRQ1 part is unused and in its original packaging.
Return procedure for TPS62850120QDRLRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62850120QDRLRQ1 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
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