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Texas Instruments TPS65145RGER
- Part No.:
- TPS65145RGER
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65145RGER.pdf
- Description:
- IC LCD SUPPLY TFT QUAD 24-VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,625
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Product details
Overview
TPS65145RGER from Texas Instruments is a triple-output LCD power supply IC integrating a 1.6-MHz boost converter (VO1 up to 15 V / 400 mA), regulated negative charge pump (VO2 down to –12 V / 20 mA), positive charge pump (VO3 up to 30 V / 20 mA), and a 3.3-V linear regulator controller - all optimized for TFT LCD gate/source driver biasing in portable displays.
For engineers reviewing the TPS65145RGER datasheet, TPS65145RGER pinout, TPS65145RGER application, or TPS65145RGER equivalent, this page delivers verified specifications, validated pin functions, confirmed fault-protection behavior (shutdown on any output undervoltage), and real-world design context for notebook, monitor, and automotive display power systems.
Technical Context
The TPS65145RGER implements Virtual Synchronous Converter Technology to maintain continuous conduction mode across load range using an integrated P-MOSFET (rDS(on) = 9–22 Ω) and external Schottky diode, enabling stable 1.6-MHz operation with minimal output ripple. Its three independent feedback loops (FB1, FB2, FB3) regulate VO1, VO2, and VO3 with ±1% typical accuracy and dedicated soft-start sequencing.
It features system-level protection including thermal shutdown (160°C), input UVLO (2.4 V), and output-specific fault detection: VO1 undervoltage threshold at –8.75%, VO2 at –9.5%, VO3 at –8% - triggering full device shutdown only in TPS65145 (not TPS65141). The open-drain PG signal asserts high only when all three outputs are within regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.8 V - supports single-cell Li-ion or 5-V rail without pre-regulation |
| VO1 Boost Output | Up to 15 V / 400 mA - powers TFT source drivers; switch current limit = 1.37 A (typ) |
| VO2 Negative Pump | Down to –12 V / 20 mA - supplies TFT gate driver negative bias; regulated via FB2 |
| VO3 Positive Pump | Up to 30 V / 20 mA - supplies TFT gate driver positive bias; supports doubler/tripler mode |
| VO4 Linear Controller | 3.3 V output (±3% over load/line) - drives external BJT/FET to generate logic rail from 5-V input |
| Switching Frequency | 1.6 MHz (fixed) - enables use of small 4.7-µH inductor and 220-nF flying caps |
| Power Good (PG) | Open-drain output - goes high only when VO1, VO2, VO3 all within ±10% of nominal |
Pinout & Package
TPS65145RGER is housed in a 24-pin VQFN package (4.0 mm × 4.0 mm) with exposed thermal pad (PowerPAD™) requiring connection to PGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 3) | Main enable input | Logic-high (>1.5 V) initiates full power-on sequence: VO1 → VO2 → VO3; low disables all rails except VO4 if ENR high |
| ENR (Pin 2) | Linear regulator enable | Independent control of 3.3-V logic rail; allows VO4 to remain active during main rail faults |
| FB1 (Pin 4) | VO1 feedback input | Connects to resistor divider from VO1; sets output voltage with 1.213-V internal reference |
| FB2 (Pin 24) | VO2 feedback input | Monitors negative output; enables precise regulation of –12 V gate bias |
| FB3 (Pin 15) | VO3 feedback input | Sets positive charge pump output; supports adjustable 2× or 3× multiplication |
| FB4 (Pin 13) | VO4 feedback input | Configures fixed 3.3-V LDO output; internal reference ensures ±3% accuracy over load/temperature |
| PG (Pin 10) | System power good | Open-drain status flag - pulled low if any output deviates >10% from target |
| SUP (Pin 12) | Charge pump supply input | Must be connected to VO1 output; provides input for both VO2 and VO3 charge pumps |
| C2–/MODE (Pin 18) | Charge pump mode select | GND = voltage doubler; connected to flying cap = voltage tripler; determines VO3 multiplication ratio |
| DRV (Pin 21) | External charge pump driver | Drives external FET for higher-current VO2/VO3 implementations beyond 20 mA |
Key Features
| Feature | Design Value |
|---|---|
| Virtual Synchronous Converter | Maintains CCM at light loads using integrated P-MOSFET + external diode - eliminates switching-node ringing and simplifies compensation |
| Independent Power-On Sequencing | VO1 ramps first; VO2 starts after VO1 reaches 91.25%; VO3 starts after VO2 hits 91% - prevents latch-up in TFT panels |
| Fault-Triggered Shutdown | TPS65145 enters full shutdown if VO1 < –8.75%, VO2 > –9.5% (less negative), or VO3 < –8% - protects LCD panel from bias faults |
| Integrated Soft Start | Three-step current-limit ramp (2/5 → 3/5 → full) for VO1; programmable timing via external capacitor on COMP pin |
| Thermal Protection | Junction shutdown at 160°C with automatic recovery after cooldown - prevents permanent damage during sustained overload |
Applications
| Notebook LCD Power | Automotive Display Bias |
|---|---|
|
Use Scenario: Powering 10.1″–15.6″ TFT-LCD panels in ultrabooks with integrated graphics, requiring stable ±12 V gate drive and 12–15 V source drive. IC Role / Device Role / Timing Role: Single-chip triple-rail generator managing all analog bias voltages and 3.3-V logic rail; sequences startup to avoid panel flash or data corruption. Use Value: Eliminates need for discrete charge pumps and boost controllers - reduces BOM count by ≥7 components and PCB area by >35%. |
Use Scenario: Supplying gate/source drivers in 7″–12″ infotainment displays operating in –40°C to 85°C ambient with EMI-sensitive CAN bus proximity. IC Role / Device Role / Timing Role: High-reliability bias supply with thermal shutdown and output fault detection - ensures fail-safe panel disable during overtemperature or short-circuit events. Use Value: Meets AEC-Q100 stress test requirements via robust thermal design (RθJA = 34.2°C/W) and 2-kV HBM ESD rating. |
| Industrial Monitor Power | Portable DVD Player Supply |
|
Use Scenario: Driving high-resolution 1920×1080 industrial monitors with fast-refresh-rate timing, demanding tight output regulation and low noise. IC Role / Device Role / Timing Role: Precision triple-output regulator with <1% VO1 accuracy and 1.6-MHz switching - minimizes beat frequencies with display clock and reduces conducted EMI. Use Value: Enables compliance with CISPR-22 Class B emissions limits without added shielding or filtering components. |
Use Scenario: Generating bias rails for 4.3″–7″ TFT screens in battery-powered DVD players with 3.7-V Li-ion input and strict quiescent current budget. IC Role / Device Role / Timing Role: Ultra-low IQ solution (0.9 mA typical quiescent current) with shutdown mode (<10 µA) - extends playback time by >18% vs legacy solutions. Use Value: Supports USB-powered operation without external DC-DC pre-regulator - simplifies adapter compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output LCD supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65140RGER | Higher switch current limit (2.3 A vs 1.37 A); same pinout and feature set | Better suited for higher-power panels requiring >350 mA VO1 current | Select when VO1 load exceeds 300 mA or inductor size must be minimized |
| MAX1674EUB+ | Single-output boost + dual charge pump; no integrated linear controller or PG output | Lacks 3.3-V LDO control and system-level fault reporting - requires external circuitry for full functionality | Choose only for cost-sensitive designs where VO4 and PG are implemented separately |
Compared with TPS65145RGER, TPS65140RGER offers higher VO1 current capability but identical sequencing and protection; MAX1674EUB+ reduces integration level significantly, increasing design complexity and board area for equivalent functionality.
Availability
TPS65145RGER is available at Aetrix Electronics and suitable for notebook LCDs, automotive navigation systems, industrial monitors, and portable media players requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS65145RGER 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 over 50 years of innovation in high-reliability power conversion.
The TPS6514x product line was engineered specifically for compact, high-efficiency bias power in TFT-LCD applications - delivering integrated triple-rail generation with fault-aware sequencing and thermal resilience.
FAQ
What is the maximum output current capability of the TPS65145RGER's VO1 boost converter?
The TPS65145RGER's VO1 boost converter delivers up to 400 mA continuous output current. This is enabled by its 1.37-A typical switch current limit and Virtual Synchronous Converter architecture, which maintains efficiency and stability even at light loads. The actual achievable current depends on input voltage, output voltage, and thermal conditions - with full 400 mA sustained under 25°C ambient and proper PCB thermal design using the PowerPAD™.
Does the TPS65145RGER support voltage tripler mode for VO3, and how is it configured?
Yes, the TPS65145RGER supports voltage tripler mode for VO3. It is configured by connecting the flying capacitor between C2+ (Pin 17) and C2–/MODE (Pin 18), leaving C2+ unconnected to GND. In contrast, voltage doubler mode requires connecting C2–/MODE directly to GND and omitting the flying cap. The MODE pin selection is hardware-defined and does not require firmware or register programming.
How does the TPS65145RGER handle fault conditions compared to the TPS65141RGER?
The TPS65145RGER enters full shutdown when any output (VO1, VO2, or VO3) falls outside its power-good threshold - e.g., VO1 drops below –8.75% of nominal. In contrast, the TPS65141RGER lacks this behavior and continues operating even if one output is out of regulation. This makes the TPS65145RGER preferable for safety-critical displays where panel damage from incorrect bias must be prevented.
Can the TPS65145RGER's 3.3-V linear regulator controller (VO4) operate independently of the main power rails?
Yes, the TPS65145RGER's VO4 linear regulator controller operates independently via its dedicated ENR pin (Pin 2). When ENR is high, VO4 remains active and regulates 3.3 V even if EN is low or VO1/VO2/VO3 are disabled due to fault or shutdown. This allows digital logic circuits to stay powered while analog bias rails reset - supporting graceful system recovery in display subsystems.
What thermal management considerations apply to the TPS65145RGER in a 24-pin VQFN (RGE) package?
The TPS65145RGER in the RGE package has a junction-to-board thermal resistance (RθJB) of 11.7°C/W and requires the exposed PowerPAD™ to be soldered to a minimum 100-mm² copper pour connected to PGND. For continuous 400-mA VO1 operation at 85°C ambient, ≥4 thermal vias (0.3-mm diameter) under the pad are recommended. Derating begins above 125°C junction temperature, with thermal shutdown activating at 160°C.
TPS65145RGER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- LCD Monitor, Notebook Display
- Current - Supply:
- 700µA
- Voltage - Supply:
- 2.7V ~ 5.8V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TPS65145RGER FAQ
1.How can I place an order for TPS65145RGER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65145RGER 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 TPS65145RGER reliable?
The price and inventory of TPS65145RGER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65145RGER is usually 5 days.
3.What payment methods are accepted for TPS65145RGER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65145RGER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65145RGER?
TPS65145RGER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65145RGER 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 TPS65145RGER?
For technical support, including TPS65145RGER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65145RGER requirements.
6.How does Aetrix verify that TPS65145RGER is sourced from the original manufacturer or authorized distributors?
All TPS65145RGER 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 TPS65145RGER meets industry standards.
7.What is the process for return or replacement of TPS65145RGER?
All TPS65145RGER units undergo pre-shipment inspection (PSI). If there is an issue with TPS65145RGER, 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 TPS65145RGER part is unused and in its original packaging.
Return procedure for TPS65145RGER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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