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Texas Instruments TPS61087DRCR
- Part No.:
- TPS61087DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61087DRCR.pdf
- Description:
- IC REG BOOST ADJ 3.2A 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,922
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Product details
Overview
TPS61087DRCR from Texas Instruments is a high-frequency, current-mode boost DC-DC converter IC with an integrated 3.2-A, 0.13-Ω N-channel MOSFET switch, supporting 2.5 V to 6 V input and up to 18.5 V output voltage, selectable 650 kHz/1.2 MHz switching frequency, and external compensation for stability optimization - used in portable TFT LCD bias supplies and GPS receivers.
For engineers reviewing the TPS61087DRCR datasheet, TPS61087DRCR pinout, TPS61087DRCR application, or TPS61087DRCR equivalent, key selection considerations include its 3.2-A peak switch current limit, 1.238-V feedback reference, soft-start programmability via SS pin, thermal shutdown at 150°C, and QFN-10 (3 mm × 3 mm) package compatibility with space-constrained handheld designs.
Technical Context
The TPS61087DRCR operates in current-mode control with quasi-constant frequency and adaptive off-time topology, enabling fast line and load transient response. It supports continuous conduction mode (CCM) at medium-to-heavy loads and transitions to discontinuous conduction mode (DCM) or pulse-skipping at light loads to maintain regulation.
Its externally compensated error amplifier (gm = 107 μA/V) interfaces with RCOMP and CCOMP to tailor loop dynamics; the FREQ pin selects between 650 kHz (GND) and 1.2 MHz (IN) operation, directly impacting inductor size, efficiency trade-offs, and output ripple performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (3.0–4.2 V), 3.3-V rail, or dual-AA alkaline inputs without pre-regulation. |
| Output Voltage Range | Up to 18.5 V - enables TFT LCD panel bias generation (VPOS/VNEG) and white LED string drivers. |
| Switch Current Limit | 3.2 A min - sustains ≥500 mA output at 15 V with >90% efficiency using 3.3-μH inductor and SL22 Schottky diode. |
| Switching Frequency | Selectable 650 kHz or 1.2 MHz - allows trade-off between small passive size (1.2 MHz) and higher light-load efficiency (650 kHz). |
| Feedback Reference | 1.238 V ±0.008 V - sets output via resistor divider (e.g., R1 = 200 kΩ, R2 = 18 kΩ for 15 V); low 0.1-μA bias current minimizes divider error. |
| Soft-Start Control | Capacitor-programmable on SS pin - 100 nF yields ~10-ms ramp; controls inrush by linearly scaling peak switch current from 0 A to 3.2 A. |
| Thermal Shutdown | 150°C activation with 14°C hysteresis - protects against sustained overload or poor PCB thermal design; resumes operation at ~136°C. |
Pinout & Package
TPS61087DRCR uses a 10-pin VSON (DRC) package, 3.00 mm × 3.00 mm × 1.00 mm body, with exposed thermal pad (Pin 4, AGND) for enhanced power dissipation. Pin numbering follows top-view standard (Pin 1 = COMP, Pin 10 = SS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP (Pin 1) | Error amplifier output | Connects to external RCOMP/CCOMP network to stabilize control loop; gm = 107 μA/V defines gain-bandwidth trade-off. |
| FB (Pin 2) | Feedback input | Senses output voltage via resistor divider; regulates output to 1.238 V reference; 0.1-μA input bias enables high-impedance dividers. |
| EN (Pin 3) | Enable input | Logic-high (>2 V) enables device; logic-low (<0.5 V) disables with 1-μA shutdown current - supports system-level power sequencing. |
| AGND (Pin 4) | Analog ground | Reference for FB, COMP, SS, EN, FREQ; must be tied to PGND near thermal pad to minimize noise coupling into error amplifier. |
| PGND (Pin 5) | Power ground | High-current return path for SW node and internal MOSFET; requires low-inductance connection to input/output capacitors. |
| SW (Pins 6 & 7) | Switch node | Drives external inductor and Schottky diode; handles peak currents up to 3.2 A; layout demands short, wide traces to reduce EMI. |
| FREQ (Pin 9) | Frequency select | GND → 650 kHz; IN → 1.2 MHz - configures oscillator without external components; affects ripple, efficiency, and transient response. |
| SS (Pin 10) | Soft-start control | Accepts capacitor to program startup current ramp; 10-μA constant current charges CSS; open-circuit disables soft-start. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable soft-start | Programmable via external capacitor on SS pin - prevents inrush-induced input droop and output overshoot during power-up. |
| Selectably optimized frequency | 650 kHz or 1.2 MHz operation - enables use of smaller magnetics (1.2 MHz) or improved light-load efficiency (650 kHz) without redesign. |
| External loop compensation | RCOMP/CCOMP network on COMP pin - allows precise tuning of phase margin and transient response for diverse output capacitance and load profiles. |
| Integrated 3.2-A power switch | 0.13-Ω rDS(on) at 5 V gate drive - reduces conduction loss and eliminates need for external MOSFET, simplifying BOM and layout. |
| Robust protection suite | Undervoltage lockout (2.4 V), thermal shutdown (150°C), and overvoltage detection (3% above 1.238 V on FB) - ensures safe operation under fault conditions. |
Applications
| TFT LCD Bias Supply | GPS Receiver Power |
|---|---|
|
Use Scenario: Generating ±12 V or +15 V bias rails for active matrix TFT displays in portable navigation devices. IC Role / Device Role / Timing Role: Primary boost regulator delivering regulated high-voltage output from 3.3-V system rail. Use Value: Enables compact, efficient bias generation with <3.3-μH inductor and SL22 diode; 1.2-MHz option minimizes board area. |
Use Scenario: Providing stable 15-V supply to GPS front-end LNA and RF modules in battery-powered asset trackers. IC Role / Device Role / Timing Role: High-efficiency step-up converter maintaining output under dynamic RF load transients. Use Value: Adaptive off-time control delivers fast load response; soft-start prevents GPS signal loss during cold start. |
| Digital Still Camera Flash Driver | DSL Modem Line Interface |
|
Use Scenario: Charging high-voltage capacitor banks for xenon flash circuits in compact digital cameras. IC Role / Device Role / Timing Role: High-current boost stage charging storage capacitor to 300 V via charge-pump cascade. Use Value: 3.2-A switch supports rapid capacitor charging; 650-kHz mode improves efficiency during extended standby. |
Use Scenario: Generating isolated ±12 V analog interface voltages for DSL line drivers and ADCs in residential modems. IC Role / Device Role / Timing Role: Non-isolated boost converter feeding downstream isolated DC-DC or transformer-based stages. Use Value: External compensation allows stable operation with high-ESR bulk capacitors common in cost-sensitive modem designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 5.5-A switch current, 1.5-MHz max frequency, same 10-pin VSON package but larger 3.5-mm × 3.5-mm footprint. | Supports >1-A output at 18.5 V; better suited for high-power camera flash or industrial sensors requiring headroom. | Choose TPS61088RHLR only if ≥4.5-A peak switch current or >1.2-MHz frequency is required; not drop-in due to different package dimensions. |
| MAX17067ETA+ | Fixed 1-MHz frequency, 2.5-A switch, 16-V max output, 8-pin μMAX package; no FREQ or SS pins. | Lacks soft-start and frequency selection; simpler implementation but less flexible for EMI-sensitive or efficiency-critical designs. | Prefer MAX17067ETA+ for cost-sensitive, fixed-frequency applications where 2.5-A current suffices and layout space is constrained. |
Compared with TPS61087DRCR, TPS61088RHLR offers higher current capability at the expense of larger footprint and higher quiescent current, while MAX17067ETA+ trades flexibility for integration simplicity and lower component count in static-output applications.
Availability
TPS61087DRCR is available at Aetrix Electronics and suitable for handheld devices, GPS receivers, digital still cameras, and DSL modems requiring stable component supply across production lifecycles.
Supply support for TPS61087DRCR 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-efficiency DC-DC conversion.
The TPS61087DRCR belongs to TI's high-current boost converter product line, designed specifically for portable and battery-powered systems needing compact, high-voltage, high-efficiency power conversion from low-input sources.
FAQ
What input voltage range does the TPS61087DRCR support?
The TPS61087DRCR supports an input voltage range of 2.5 V to 6 V, making it compatible with single-cell Li-ion batteries (nominal 3.7 V, range 3.0–4.2 V), regulated 3.3-V rails, and dual-AA alkaline sources. Operation below 2.5 V is blocked by undervoltage lockout (UVLO) triggering at 2.4 V, ensuring reliable startup and preventing erratic behavior.
How is the output voltage set on the TPS61087DRCR?
The output voltage of the TPS61087DRCR is set using an external resistor divider connected to the FB pin, referenced to a precise 1.238-V internal bandgap. For example, selecting R2 = 18 kΩ and R1 = 200 kΩ yields a nominal 15-V output. The feedback node draws only 0.1 μA, minimizing divider current error and enabling high-impedance configurations for low quiescent power.
Can the TPS61087DRCR operate at both 650 kHz and 1.2 MHz simultaneously?
No - the TPS61087DRCR supports only one switching frequency at a time, selected by the logic level on the FREQ pin: connecting FREQ to GND configures 650 kHz operation, while connecting it to IN selects 1.2 MHz. The frequency is not dynamically adjustable during operation; changing it requires a hardware modification to the FREQ pin connection.
What is the purpose of the SS (soft-start) pin on the TPS61087DRCR?
The SS pin on the TPS61087DRCR controls inrush current during startup by linearly ramping the internal current limit from 0 A to the full 3.2-A switch limit. A capacitor (e.g., 100 nF) connected between SS and GND is charged at 10 μA, producing a controlled output voltage rise. Leaving SS open disables soft-start, resulting in immediate full-current startup.
Does the TPS61087DRCR require external compensation components?
Yes - the TPS61087DRCR uses external compensation via the COMP pin to optimize loop stability and transient response. Recommended values include RCOMP = 100 kΩ and CCOMP = 820 pF for 1.2-MHz operation with 3.3-μH inductor and 15-V output. The transconductance error amplifier (gm = 107 μA/V) requires these components to achieve adequate phase margin across load and input variations.
TPS61087DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 18.5V
- Current - Output:
- 3.2A (Switch)
- Frequency - Switching:
- 650kHz, 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61087DRCR FAQ
1.How can I place an order for TPS61087DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61087DRCR 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 TPS61087DRCR reliable?
The price and inventory of TPS61087DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61087DRCR is usually 5 days.
3.What payment methods are accepted for TPS61087DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61087DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61087DRCR?
TPS61087DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61087DRCR 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 TPS61087DRCR?
For technical support, including TPS61087DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61087DRCR requirements.
6.How does Aetrix verify that TPS61087DRCR is sourced from the original manufacturer or authorized distributors?
All TPS61087DRCR 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 TPS61087DRCR meets industry standards.
7.What is the process for return or replacement of TPS61087DRCR?
All TPS61087DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61087DRCR, 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 TPS61087DRCR part is unused and in its original packaging.
Return procedure for TPS61087DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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