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Texas Instruments TPS62136RGXT
- Part No.:
- TPS62136RGXT
- Manufacturer:
- Texas Instruments
- Package:
- 11-VFQFN
- Datasheet:
-
TPS62136RGXT.pdf
- Description:
- IC REG BUCK ADJ 4A 11VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:865
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Product details
Overview
TPS62136RGXT from Texas Instruments is a synchronous step-down DC-DC converter using DCS-Control™ topology, delivering 4-A continuous output current with ±1% output voltage accuracy in PWM mode. It operates from 3 V to 17 V input and supports adjustable 0.8 V to 12 V output, featuring 18 µA quiescent current, forced-PWM/PFM mode selection via MODE pin, and active output discharge - ideal for connected-standby power supplies in ultra-low-power computers and SSD drives.
For engineers reviewing the TPS62136RGXT datasheet, TPS62136RGXT pinout, TPS62136RGXT application, or TPS62136RGXT equivalent, key selection considerations include its 1-MHz nominal switching frequency, VQFN-11 (3 mm × 2 mm) package, 100% duty-cycle operation for low-dropout battery applications, and integrated Power Good (PG), soft-start/tracking (SS/TR), and voltage scaling (VSEL/FB2) functions.
Technical Context
The TPS62136RGXT implements DCS-Control™ - a hybrid regulation architecture combining fast comparator-based transient response with voltage-mode feedback for stable DC regulation. It dynamically transitions between PWM and Power Save Mode (PFM) without output disturbance, maintaining high efficiency across 0–4 A load range.
Its control logic includes precise ENABLE with user-defined UVLO, open-drain PG with 93–98% VOUT threshold, and dual-mode operation: forced PWM (MODE = high) for fixed 1-MHz switching, or adaptive AEE™ (MODE = low) that adjusts on-time and frequency to maximize efficiency under varying VIN, VOUT, and IOUT conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 17 V - supports multi-cell Li-ion batteries and standard 12-V intermediate rails without external pre-regulation. |
| Output Current | 4 A continuous - sustains full-rated load at +125°C junction temperature with proper PCB thermal design. |
| Output Voltage Accuracy | ±1% in PWM mode - enables tight regulation for sensitive digital loads like SoCs and FPGAs without post-regulation. |
| Quiescent Current | 18 µA typical - minimizes standby power loss in always-on systems such as gaming console auxiliary rails. |
| Switching Frequency | 1 MHz nominal (forced PWM) - allows compact 1.5-µH inductor and low-profile ceramic output capacitors (≥12 µF). |
| Package | VQFN-11 (3.0 mm × 2.0 mm, 0.5-mm pitch) - thermally enhanced bottom-exposed pad supports ≤38.4°C/W junction-to-ambient rise. |
| Protection Features | HICCUP overcurrent (TPS62136 only), thermal shutdown (160°C), UVLO (2.8–3.0 V rising), and 100% duty-cycle mode - ensures robust operation during brownouts and short transients. |
Pinout & Package
VQFN-11 package (RGX suffix), 3.0 mm × 2.0 mm body, 0.5-mm pitch, thermally enhanced exposed pad (GND-connected). Pin 1 marked by top-side dot; bottom view orientation matches TI datasheet SLVSDV2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 3–17 V; requires local 10-µF ceramic capacitor to GND for EMI suppression and transient current sourcing. |
| SW (Pin 2) | Power switch node | Connects to external 1.5-µH inductor; carries high di/dt; must be routed short and wide to minimize ringing and EMI. |
| GND (Pin 3) | Ground reference | Primary return path for power and control circuits; tied to exposed thermal pad for optimal heat dissipation. |
| FB2 (Pin 4) | Feedback auxiliary | Open-drain output enabling dynamic VOUT scaling when VSEL = high; adds parallel resistor to R2 for higher output voltage. |
| FB (Pin 5) | Main feedback input | Senses divider ratio from VOUT; internal 0.7-V reference sets base output (0.8 V min); accuracy ±1% in PWM mode. |
| VOS (Pin 6) | Output voltage sense | Direct connection to output capacitor anode improves load regulation by compensating PCB trace resistance. |
| PG (Pin 7) | Power good indicator | Open-drain output pulled high externally; asserts low if VOUT drops <93% of target or EN/UVLO/thermal fault occurs. |
| EN (Pin 8) | Enable control | Logic-compatible input (VIH = 0.8 V); enables precise sequencing and programmable UVLO via external resistor divider. |
| SS/TR (Pin 9) | Soft-start / tracking | Capacitor sets startup ramp time; voltage input enables output tracking of master rail - critical for multi-rail SoC power-up. |
| MODE (Pin 10) | Operation mode select | Pull high for forced PWM (fixed 1 MHz); pull low for AEE™-enabled PWM/PFM auto-switching - no external components needed. |
| VSEL (Pin 11) | Voltage scaling control | High-level signal activates internal FB2-to-GND switch, enabling dual-output-voltage configuration without external MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Combines hysteretic speed with voltage-mode stability - achieves <10-µs load transient response and <1% output deviation without external compensation. |
| Automatic Efficiency Enhancement (AEE™) | Adapts switching frequency and on-time in real time across VIN/VOUT/IOUT - maintains >85% efficiency from 10 mA to 4 A at 5 VOUT/12 VIN. |
| Active output discharge | Internal 100-Ω discharge path from VOUT to GND during shutdown - prevents floating outputs and enables safe hot-swap sequencing. |
| 100% duty-cycle mode | Enables regulation down to VIN ≈ VOUT + 0.3 V - extends runtime in single-cell Li-ion (3.0–4.2 V) to 3.3-V or 2.5-V system rails. |
| HICCUP overcurrent protection | Shuts down after 512 consecutive current-limit events, then auto-restarts - protects against sustained shorts while avoiding latch-off in temporary overload. |
Applications
| Mobile Computing Power Rail | SSD Drive Core Supply |
|---|---|
|
Use Scenario: Powers CPU I/O, memory interface, and PCIe controller in fanless ultrabooks operating from 3-cell Li-ion (9–12.6 V). IC Role / Device Role / Timing Role: Primary POL regulator delivering tightly regulated 1.05 V/3 A with <10-µs transient response to burst memory access. Use Value: DCS-Control™ eliminates need for large bulk capacitance; ±1% accuracy avoids derating; 18-µA IQ extends battery life in S0ix connected-standby states. |
Use Scenario: Supplies 3.3 V/2.5 A to NAND flash and controller in M.2 NVMe SSDs powered from 12-V motherboard rail. IC Role / Device Role / Timing Role: High-efficiency buck converter with PG output synchronized to host reset sequence and SS/TR tracking for controlled power-up timing. Use Value: 1-MHz switching enables small 1.5-µH inductor; VQFN-11 footprint fits dense M.2 layouts; HICCUP protection guards against NAND write-current surges. |
| Gaming Console Auxiliary Rail | Industrial Embedded Controller |
|
Use Scenario: Generates 5 V/3 A for USB-C PD port, audio codec, and sensor hub in portable gaming handhelds using dual Li-ion (7.4–8.4 V). IC Role / Device Role / Timing Role: Adjustable-output buck with VSEL/FB2 enabling dynamic voltage scaling between game modes (performance vs. battery-saver). Use Value: Dual-voltage capability reduces BOM count; 100% duty cycle sustains 5-V output down to 5.3 V input - maximizes usable battery range. |
Use Scenario: Provides 1.8 V/2 A to ARM Cortex-M7 microcontroller and Ethernet PHY in DIN-rail mounted PLC with 12-V DC field supply. IC Role / Device Role / Timing Role: Industrial-grade POL converter with -40°C to +125°C operation, UVLO set to 8.5 V, and PG used for watchdog-triggered system reset. Use Value: Robust thermal design (38.4°C/W θJA) sustains full load in enclosed enclosures; AEE™ maintains >90% efficiency across variable PLC processing loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS621361RGXT | No active output discharge; identical pinout, specs, and DCS-Control™ performance except discharge function disabled. | Preferred where output floating during shutdown is acceptable (e.g., non-critical rails), reducing leakage risk in high-reliability systems. | Select TPS621361RGXT if active discharge is unnecessary and lower shutdown IQ (<1 µA) is prioritized over discharge safety. |
| TPS62135RGXT | 2.5-MHz switching frequency; same 4-A rating, VQFN-11 package, and DCS-Control™ but higher fSW enables smaller 0.47-µH inductor. | Better suited for space-constrained designs requiring minimal inductor height (e.g., thin client devices), but with reduced efficiency at heavy loads due to higher switching losses. | Choose TPS62135RGXT when board area is critical and load is predominantly light-to-moderate; retain TPS62136RGXT for highest full-load efficiency and thermal margin. |
Compared with TPS621361RGXT, the TPS62136RGXT adds active output discharge for safer sequencing but shares identical regulation accuracy, thermal performance, and layout compatibility. Against TPS62135RGXT, it trades higher-frequency operation for superior heavy-load efficiency and lower EMI - making it optimal for industrial and computing applications demanding consistent 4-A delivery.
Availability
TPS62136RGXT is available at Aetrix Electronics and suitable for mobile computing power rails, SSD drive core supplies, and industrial embedded controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS62136RGXT 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and automotive-grade reliability.
The TPS62136RGXT belongs to TI's DCS-Control™ synchronous buck converter family, designed specifically for high-transient-performance point-of-load regulation in battery-powered and multi-rail computing systems where efficiency, accuracy, and compact size are critical.
FAQ
What is the maximum continuous output current of the TPS62136RGXT?
The TPS62136RGXT delivers 4 A continuous output current under recommended operating conditions (TJ ≤ +125°C, adequate PCB copper pour, and proper thermal vias to the exposed pad). This rating is validated across the full 3–17 V input range and 0.8–12 V output range, with derating required only above +125°C junction temperature per the thermal metrics in the datasheet.
Does the TPS62136RGXT support output voltage tracking during power-up?
Yes, the TPS62136RGXT supports voltage tracking via its SS/TR pin. When a master supply voltage is applied to SS/TR, the TPS62136RGXT output follows it in both rising and falling directions in forced PWM mode. This enables precise sequencing for multi-rail SoCs and FPGAs, eliminating the need for external tracking ICs or complex discrete solutions.
How does the MODE pin affect switching behavior in the TPS62136RGXT?
The MODE pin selects between two distinct operating modes: pulling MODE high forces continuous PWM operation at ~1 MHz, while pulling MODE low enables automatic PWM/PFM switching via AEE™. In PFM mode, the TPS62136RGXT reduces switching frequency linearly with load to maintain >85% efficiency down to 10 mA - crucial for connected-standby power budgets.
Is active output discharge available on the TPS62136RGXT?
Yes, the TPS62136RGXT includes an internal 100-Ω active discharge path from VOUT to GND during shutdown (EN = low), ensuring rapid and controlled output voltage decay. This feature is absent in the pin-compatible TPS621361RGXT variant and is essential for preventing back-powering, meeting safety standards, and enabling reliable hot-swap operation.
What package type and dimensions does the TPS62136RGXT use?
The TPS62136RGXT is packaged in a 11-pin VQFN (RGX) with nominal body dimensions of 3.0 mm × 2.0 mm and 0.5-mm pitch. It features an exposed thermal pad on the bottom surface, which must be soldered to a GND plane with ≥4 thermal vias for optimal thermal performance (θJA = 38.4°C/W on 4-layer board).
TPS62136RGXT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 11-VFQFN
- 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):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 12V
- Current - Output:
- 4A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 11-VQFN-HR (2x3)
TPS62136RGXT FAQ
1.How can I place an order for TPS62136RGXT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62136RGXT 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 TPS62136RGXT reliable?
The price and inventory of TPS62136RGXT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62136RGXT is usually 5 days.
3.What payment methods are accepted for TPS62136RGXT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62136RGXT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62136RGXT?
TPS62136RGXT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62136RGXT 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 TPS62136RGXT?
For technical support, including TPS62136RGXT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62136RGXT requirements.
6.How does Aetrix verify that TPS62136RGXT is sourced from the original manufacturer or authorized distributors?
All TPS62136RGXT 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 TPS62136RGXT meets industry standards.
7.What is the process for return or replacement of TPS62136RGXT?
All TPS62136RGXT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62136RGXT, 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 TPS62136RGXT part is unused and in its original packaging.
Return procedure for TPS62136RGXT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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