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Texas Instruments TPS560430XFDBVT
- Part No.:
- TPS560430XFDBVT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
TPS560430XFDBVT.pdf
- Description:
- IC REG BUCK PWM 600MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:883
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Product details
Overview
TPS560430XFDBVT from Texas Instruments is a synchronous step-down DC-DC converter delivering up to 600 mA output current, operating from 4 V to 36 V input, with 1.1-MHz fixed switching frequency and FPWM mode for constant-frequency operation and low output ripple. It is used in industrial power supplies requiring stable 5-V or adjustable rail generation from wide-input unregulated sources.
For engineers reviewing the TPS560430XFDBVT datasheet, TPS560430XFDBVT pinout, TPS560430XFDBVT application, or TPS560430XFDBVT equivalent, key selection criteria include its 600-mA continuous output capability, ±1.5% reference voltage tolerance over –40°C to 125°C, internal compensation, SOT-23-6 package footprint, and support for pre-biased startup - all critical for compact, rugged industrial and automotive auxiliary supply designs.
Technical Context
The TPS560430XFDBVT employs fixed-frequency peak-current mode control with internal slope compensation and an integrated error amplifier. Its FPWM operation ensures constant 1.1-MHz switching across full load range, eliminating PFM-induced frequency variation and minimizing output voltage ripple.
It features cycle-by-cycle current limiting on both high-side (0.8–1.4 A peak) and low-side (0.62–0.98 A valley) MOSFETs, hiccup-mode short-circuit protection with 135-ms off-time, and thermal shutdown at 170°C. The device supports startup into pre-biased outputs and includes precision enable with 1.1–1.36 V rising threshold and 120 µA typical quiescent current in PFM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 36 V - supports direct connection to 12-V/24-V industrial and automotive rails without pre-regulation. |
| Output Current | 600 mA continuous - sufficient for powering microcontrollers, sensors, and interface ICs in space-constrained systems. |
| Switching Frequency | 1.1 MHz (±15%) - enables use of small external inductors (e.g., 2.2 µH) and ceramic capacitors for minimal solution size. |
| Reference Voltage | 1.000 V ±1.5% over –40°C to 125°C - ensures tight output regulation (e.g., 5.0 V ±25 mV) across temperature without trimming. |
| Minimum On-Time | 60 ns - allows high step-down ratios (e.g., 24 V → 3.3 V) at 1.1 MHz without frequency foldback under light load. |
| Enable Threshold | 1.23 V typical rising threshold with 0.13 V hysteresis - enables precise system-level UVLO via resistor divider for battery or AC-DC supply monitoring. |
| Quiescent Current | 120 µA typical (PFM version) - maintains efficiency down to µA-level loads in always-on monitoring circuits. |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm), thermally enhanced with exposed pad (not electrically connected), suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CB | Bootstrap capacitor connection | Connects 100-nF ceramic capacitor to SW pin to generate gate drive voltage for internal high-side MOSFET. |
| 2 - GND | Power ground | Common return path for VIN bypass, output capacitor, and internal low-side FET source; requires short, low-inductance trace to CIN/COUT. |
| 3 - FB | Feedback input | Monitors output voltage via resistor divider; internal 1.0-V reference sets VOUT = 1.0 × (1 + RFBT/RFBB); never short to GND. |
| 4 - EN | Precision enable input | Active-high logic control; 1.23 V threshold enables system-level undervoltage lockout or sequencing without external comparator. |
| 5 - VIN | Main power input | Supplies internal bias LDO and high-side FET; must be decoupled with ≥10 µF ceramic capacitor placed adjacent to pin. |
| 6 - SW | Switching node | Drives external power inductor; connects internally to drain of low-side FET and source of high-side FET; high dv/dt node requiring careful layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external Schottky diode, reducing conduction losses and board area - improves full-load efficiency by ~5% vs. asynchronous design. |
| Internal compensation | Removes need for external Type-II/III compensation network; enables stable operation with standard 22-µF X5R ceramic output capacitors. |
| Pre-biased output startup | Allows safe turn-on when VOUT is already charged (e.g., shared rail systems), preventing reverse current flow into upstream supplies. |
| Hiccup-mode short-circuit protection | Shuts down for 135 ms upon sustained overcurrent, limiting average power dissipation to <100 mW during fault - protects PCB traces and IC junction. |
| 98% maximum duty cycle | Supports ultra-low dropout operation (e.g., 5.1 V → 5.0 V at 600 mA), extending usable input range in brownout conditions. |
Applications
| Industrial PLC I/O Power | Automotive Camera Module Supply |
|---|---|
|
Use Scenario: Powering isolated digital I/O channels and analog sensor interfaces in programmable logic controllers operating from 24-V DC bus. IC Role / Device Role / Timing Role: Primary 5-V or 3.3-V point-of-load regulator; provides clean, regulated rail with fast transient response to handle burst-mode communication loads. Use Value: 600-mA output sustains simultaneous activation of multiple optocouplers and ADC references; FPWM mode ensures EMI predictability in noise-sensitive control cabinets. |
Use Scenario: Generating 3.3-V supply for CMOS image sensor, ISP, and SerDes in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Compact, high-reliability buck converter mounted directly on camera PCB; withstands automotive temperature cycling and load dump transients. Use Value: 4–36-V input range accepts battery (9–16 V) and alternator (up to 36 V) conditions; 1.1-MHz switching avoids AM radio band; ±1.5% VREF ensures consistent sensor biasing. |
| Smart Meter Auxiliary Rail | HVAC Controller Power |
|
Use Scenario: Providing isolated 5-V rail for metrology ASIC, RTC, and wireless transceiver in advanced metering infrastructure (AMI) endpoints. IC Role / Device Role / Timing Role: Secondary regulator fed from primary 12-V intermediate bus; operates continuously in low-power sleep modes with microamp quiescent draw. Use Value: 120 µA IQ enables >10-year battery backup life; pre-biased startup prevents data loss during main supply interruption; SOT-23-6 footprint saves space on constrained meter PCBs. |
Use Scenario: Powering MCU, display driver, and environmental sensors in commercial HVAC zone controllers powered from 24-VAC-to-DC adapters. IC Role / Device Role / Timing Role: Main system regulator converting rectified 24-VDC to stable 3.3-V logic rail; handles variable loads from fan speed control and Zigbee/Thread radios. Use Value: Thermal shutdown at 170°C prevents failure in enclosed enclosures; hiccup protection survives motor stall-induced bus faults; 60-ns min on-time supports 24-V→3.3-V conversion without foldback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS560430XDBVT | 1.1-MHz PFM version; higher light-load efficiency but variable frequency and increased output ripple. | Better suited for battery-powered devices where standby current dominates lifetime; less ideal for EMI-sensitive or ripple-critical rails. | Select TPS560430XDBVT only if light-load efficiency >85% at 100 µA is prioritized over ripple and EMI control. |
| TPS560200DBVR | 600-mA, 4–17-V input, 1.4-MHz FPWM; no frequency foldback; lower max VIN; uses external compensation. | Limited to lower-input systems (e.g., USB PD, 12-V-only); requires additional compensation components and lacks 36-V surge margin. | Choose TPS560200DBVR only for cost-sensitive, low-voltage designs where 17-V max input is acceptable and layout space permits extra RC network. |
Compared with TPS560430XDBVT and TPS560200DBVR, the TPS560430XFDBVT uniquely combines 36-V input tolerance, FPWM stability, and internal compensation - making it the optimal choice for industrial and automotive auxiliary supplies demanding robustness, predictability, and minimal BOM count.
Availability
TPS560430XFDBVT is available at Aetrix Electronics and suitable for industrial PLCs, automotive camera modules, smart meter auxiliary rails, and HVAC controller power supplies requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS560430XFDBVT 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability DC-DC conversion.
The TPS560430XFDBVT belongs to TI's SIMPLE SWITCHER® family - engineered specifically for rugged industrial and automotive power applications where wide input range, thermal resilience, and ease of design are mandatory.
FAQ
What is the maximum input voltage rating for the TPS560430XFDBVT?
The TPS560430XFDBVT has an absolute maximum input voltage rating of 38 V, with recommended continuous operation up to 36 V. This 36-V rating enables direct connection to 24-V industrial buses and automotive systems experiencing load dump transients, while maintaining reliable operation within its specified 4–36-V operating range.
Does the TPS560430XFDBVT support pre-biased output startup?
Yes, the TPS560430XFDBVT supports startup into a pre-charged output. Its control architecture prevents reverse current flow from the output capacitor into the switch node during turn-on, protecting upstream supplies and ensuring deterministic power-up sequencing in multi-rail systems where the TPS560430XFDBVT shares a common VOUT bus.
What is the purpose of the CB pin on the TPS560430XFDBVT?
CB is the bootstrap capacitor terminal for the internal high-side MOSFET gate driver. A 100-nF ceramic capacitor must be connected between CB and SW to provide the floating voltage required to fully enhance the high-side FET during each switching cycle. This eliminates the need for an external charge pump or bootstrap diode.
Can the TPS560430XFDBVT operate with an output voltage lower than 1.0 V?
No - the TPS560430XFDBVT uses an internal 1.0-V reference and requires the feedback divider to set VOUT ≥ 1.0 V. The minimum regulated output is defined by VREF × (1 + RFBT/RFBB), and since VREF is fixed at 1.0 V, outputs below 1.0 V are not supported. For sub-1-V rails, consider TI's TPS6286x or similar adjustable regulators with lower reference voltages.
How does hiccup-mode protection work in the TPS560430XFDBVT?
When the TPS560430XFDBVT detects sustained overcurrent (e.g., short circuit at VOUT), it enters hiccup mode: the device shuts down for 135 ms (typical), then attempts automatic restart. If the fault persists, the cycle repeats. This limits average power dissipation, prevents thermal runaway, and protects both the TPS560430XFDBVT and external components during extended fault conditions.
TPS560430XFDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- PWM
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TPS560430XFDBVT FAQ
1.How can I place an order for TPS560430XFDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS560430XFDBVT 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 TPS560430XFDBVT reliable?
The price and inventory of TPS560430XFDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS560430XFDBVT is usually 5 days.
3.What payment methods are accepted for TPS560430XFDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS560430XFDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS560430XFDBVT?
TPS560430XFDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS560430XFDBVT 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 TPS560430XFDBVT?
For technical support, including TPS560430XFDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS560430XFDBVT requirements.
6.How does Aetrix verify that TPS560430XFDBVT is sourced from the original manufacturer or authorized distributors?
All TPS560430XFDBVT 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 TPS560430XFDBVT meets industry standards.
7.What is the process for return or replacement of TPS560430XFDBVT?
All TPS560430XFDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS560430XFDBVT, 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 TPS560430XFDBVT part is unused and in its original packaging.
Return procedure for TPS560430XFDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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