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Texas Instruments TPS65136RTER
- Part No.:
- TPS65136RTER
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS65136RTER.pdf
- Description:
- IC REG AMOLED DISPL 2OUT 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,378
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Product details
Overview
TPS65136RTER from Texas Instruments is a single-inductor, multiple-output (SIMO) buck-boost regulator designed for active-matrix OLED (AMOLED) display power supplies. It delivers fixed +4.6 V / 80 mA positive and adjustable –4.4 V / 80 mA negative outputs from a 2.3–5.5 V input, features 1% output voltage accuracy, out-of-audio switching mode (≥20 kHz), and thermal shutdown protection - deployed in smartphone AMOLED panels requiring tight line regulation during RF transmit transients.
For engineers reviewing the TPS65136RTER datasheet, TPS65136RTER pinout, TPS65136RTER application, or TPS65136RTER equivalent, key selection criteria include its SIMO topology for minimal solution size, dual-rail sequencing delay (8.7 ms), ±30% output current mismatch tolerance, and QFN-16 (RTE) package with exposed thermal pad for mobile power integrity.
Technical Context
The TPS65136RTER implements a four-switch buck-boost topology with peak-current-mode control, using a single inductor to generate both positive and negative rails simultaneously. Its dual-loop regulation includes an error amplifier for OUTP (4.6 V fixed) and a ground-referenced feedback amplifier (FBG) for OUTN adjustment via external resistors R1/R2.
It operates in discontinuous conduction mode (DCM) at light loads with VCO-controlled frequency (40 kHz to 1 MHz), shifting to continuous conduction mode (CCM) at higher loads with fixed off-time control. Line-transient immunity stems from DCM's inherent invariance of inductor peak current and falling slope across input voltage changes - critical for AMOLED pixel stability during battery voltage sag.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and USB-powered operation without pre-regulation |
| Positive Output | +4.6 V ±1% - internally fixed, 80 mA max, used for AMOLED anode bias |
| Negative Output | –4.4 V ±1% - externally adjustable via FBG divider, 80 mA max, used for cathode bias |
| Output Power | 750 mW at VIN = 2.9 V - sufficient for small-to-medium AMOLED panels (e.g., 3–5 inch) |
| Switching Frequency | 40 kHz to 1 MHz - auto-scales with load; stays ≥20 kHz to avoid audible noise in ceramic capacitors |
| Sequencing Delay | 8.7 ms (VPOS to VNEG) - prevents panel latch-up by ensuring positive rail stabilizes first |
| Quiescent Current | 1.7 mA - enables low-power standby in always-on display modes |
| Thermal Shutdown | 140 °C with 5 °C hysteresis - protects against sustained overload in compact handheld enclosures |
Pinout & Package
TPS65136RTER uses a 3 mm × 3 mm, 16-terminal WQFN package (RTE) with exposed thermal die pad connected to analog GND for enhanced thermal dissipation in space-constrained mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power Input | Accepts 2.3–5.5 V supply; requires 10 µF ceramic input capacitor close to pin |
| OUTN (Pins 2,3) | Negative Output | Delivers regulated negative rail (e.g., –4.4 V); dual pins reduce trace inductance and IR drop |
| VAUX (Pin 4) | Auxiliary Reference | 1.2 V internal bias rail; requires 100 nF decoupling capacitor for stability |
| FB (Pin 7) | Positive Feedback | Connects to OUTP via resistor divider to set fixed 4.6 V output; high-impedance input |
| FBG (Pin 6) | Negative Feedback Ground | Regulated to 0 V; sets OUTN voltage via R1/R2 divider (R1 = 464 kΩ, R2 = 442 kΩ for –4.4 V) |
| EN (Pin 8) | Enable Control | Active-high logic input with 500 kΩ internal pulldown; enables full regulation when pulled ≥1.2 V |
| OUTP (Pins 9,10) | Positive Output | Delivers +4.6 V rail; dual pins support parallel routing for low-impedance AMOLED anode connection |
| PGND (Pins 11,12) | Power Ground | High-current return path for inductor and MOSFET switches; must be tied to GND plane under exposed pad |
| GND (Pin 5) | Analog Ground | Reference for FB, FBG, EN; isolated from PGND in layout to minimize noise coupling |
| L1 (Pins 13,14) | Inductor Terminal 1 | Connects to one end of shared inductor (e.g., 2.2 µH); dual pins reduce AC resistance |
| L2 (Pins 15,16) | Inductor Terminal 2 | Connects to other end of shared inductor; forms core of SIMO energy transfer path |
Key Features
| Feature | Design Value |
|---|---|
| Single-Inductor Dual-Output (SIMO) | Reduces BOM count and PCB area vs. dual-inductor solutions - critical for <10 mm² display PMIC footprints |
| Out-of-Audio Switching Mode | Maintains ≥20 kHz minimum frequency across load range to eliminate audible capacitor squeal in handheld devices |
| Fixed +4.6 V / Adjustable –4.4 V Outputs | Meets standard AMOLED VDD/VSS requirements while allowing tuning for panel-specific voltage margins |
| 8.7 ms Internal Sequencing Delay | Guarantees safe power-up order without external timing components - prevents gate oxide stress on OLED drivers |
| ±30% Output Current Mismatch Tolerance | Accommodates natural asymmetry between anode/cathode currents in real AMOLED subpixels without loss of regulation |
| Thermal Shutdown with Hysteresis | 140 °C trip + 5 °C hysteresis ensures reliable recovery after transient overloads in sealed smartphone chassis |
Applications
| Smartphone AMOLED Display Supply | Wearable OLED Power Management |
|---|---|
Use Scenario: Powering 3.5–5.5 inch AMOLED displays in LTE/5G smartphones during burst transmission, where input voltage sags from 4.2 V to 3.4 V. IC Role / Device Role / Timing Role: SIMO regulator generating synchronized +4.6 V (anode) and –4.4 V (cathode) rails with 8.7 ms sequencing and <0.008%/V line regulation. Use Value: Prevents visible screen flicker or grayscale shift during RF transmit events by maintaining stable pixel bias voltages despite battery droop. | Use Scenario: Driving compact round OLED displays (<1.5 inch) in smartwatches with aggressive power cycling and ambient temperature swings (–10°C to 60°C). IC Role / Device Role / Timing Role: Dual-rail power source with 1.7 mA quiescent current and thermal shutdown, operating from coin-cell or thin-film battery (2.5–4.5 V). Use Value: Extends battery runtime >20% vs. discrete charge-pump solutions while enabling rapid wake-from-sleep display activation. |
| Tablet AMOLED Bias Supply | Industrial HMI OLED Panel |
Use Scenario: Supporting 7–10 inch AMOLED panels in portable tablets with variable brightness (10–500 cd/m²) and USB-C PD input (3.0–5.5 V). IC Role / Device Role / Timing Role: High-efficiency SIMO converter delivering 750 mW total output with 4.7 µH inductor option for >85% efficiency at 60 mA per rail. Use Value: Eliminates need for external LDO post-regulators by achieving ±1% output accuracy across temperature and load - reducing heat and component count. | Use Scenario: Powering ruggedized OLED displays in factory HMIs exposed to vibration, ESD, and wide ambient temperature (–40°C to 85°C). IC Role / Device Role / Timing Role: Robust dual-rail supply with short-circuit protection on both outputs, 2 kV HBM ESD rating, and –40°C to 85°C guaranteed operation. Use Value: Ensures display reliability in harsh environments without derating - no field failures due to output fault conditions or cold-start instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail AMOLED power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65132ARSLR | Fixed +5.0 V / –5.0 V outputs; 2.7–5.5 V input; 1.2 MHz fixed-frequency PWM; no out-of-audio mode | Designed for larger AMOLED panels requiring higher voltage headroom; less suitable for ultra-low-noise audio-sensitive designs | Select when fixed symmetric rails and higher switching frequency simplify EMI filtering - not for noise-critical handhelds |
| MAX1710EEG+T | Separate inductor per rail; 2.7–5.5 V input; +5.0 V / –5.0 V fixed; integrated gate drivers for external FETs | Targeted at high-current AMOLED (≥200 mA/rail) and LCD bias; larger solution size and higher BOM cost | Choose for industrial displays needing >150 mA per rail or programmable voltage scaling - not for space-constrained mobile |
Compared with TPS65136RTER, TPS65132ARSLR offers tighter voltage symmetry but sacrifices audible-noise suppression, while MAX1710EEG+T provides higher current capability at the expense of PCB area and component count - making TPS65136RTER optimal for compact, low-noise, mid-power AMOLED systems.
Availability
TPS65136RTER is available at Aetrix Electronics and suitable for smartphone AMOLED displays, wearable OLED interfaces, and industrial HMI panels requiring stable dual-rail power supply with minimal footprint and high line-transient immunity.
Supply support for TPS65136RTER 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 display power solutions.
The TPS65136RTER belongs to TI's AMOLED power management product line, engineered specifically to replace discrete charge pumps and dual converters in mobile displays - prioritizing solution miniaturization, low-noise operation, and robust transient response.
FAQ
What is the recommended inductor value for TPS65136RTER in a smartphone AMOLED application?
The TPS65136RTER supports both 2.2 µH and 4.7 µH inductors. For smartphone applications prioritizing efficiency and line-transient performance, a 4.7 µH inductor (e.g., Coilcraft LPS3008-472) is recommended - it reduces ripple current, improves efficiency by ~3–5%, and lowers the CCM transition point for better transient immunity. The 2.2 µH option suits space-constrained layouts where PCB height is limited to ≤0.8 mm.
Does TPS65136RTER require external compensation components?
No, the TPS65136RTER is internally compensated and operates stably with standard 4.7 µF output capacitors and either 2.2 µH or 4.7 µH inductors. No external compensation network is needed - simplifying design and reducing bill-of-materials. Layout adherence (e.g., short FB/FBG traces, proper grounding) remains critical for stability, as confirmed in TI's SLVU244 evaluation module guide.
How does the TPS65136RTER handle output current mismatch between positive and negative rails?
The TPS65136RTER tolerates up to ±30% output current mismatch between OUTP and OUTN through its FBG ground-regulation loop. When mismatch exceeds this range - such as during abnormal panel leakage or driver faults - one rail drops out of regulation. This behavior is intentional and documented in the datasheet's "Output-Current Mismatch" section, ensuring predictable failure mode without latch-up.
Can the negative output voltage of TPS65136RTER be adjusted below –4.4 V?
Yes, the TPS65136RTER's negative output is adjustable down to –6 V using the FBG feedback divider. With R1 = 464 kΩ fixed (per typical application), R2 is calculated as R2 = R1 × |VOUTN| / 4.6 V. For example, –5.4 V requires R2 = 542 kΩ. The device's absolute maximum rating for OUTN is –8 V, and negative overvoltage protection triggers at –7.6 V - providing safe margin for tuning.
What is the purpose of the VAUX pin on the TPS65136RTER?
The VAUX pin on the TPS65136RTER provides a stable 1.2 V reference output used internally for biasing and externally for auxiliary circuitry. It requires a 100 nF ceramic capacitor to ground for stability and low-noise operation. While not intended as a general-purpose LDO, VAUX can power small signal components like level shifters or sensor bias networks adjacent to the AMOLED display interface - reducing need for additional regulators.
TPS65136RTER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, AMOLED Display
- Voltage - Input:
- 2.3V ~ 5.5V
- Number of Outputs:
- 2
- Voltage - Output:
- 4.6V, Adj down to -6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS65136RTER FAQ
1.How can I place an order for TPS65136RTER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65136RTER 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 TPS65136RTER reliable?
The price and inventory of TPS65136RTER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65136RTER is usually 5 days.
3.What payment methods are accepted for TPS65136RTER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65136RTER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65136RTER?
TPS65136RTER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65136RTER 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 TPS65136RTER?
For technical support, including TPS65136RTER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65136RTER requirements.
6.How does Aetrix verify that TPS65136RTER is sourced from the original manufacturer or authorized distributors?
All TPS65136RTER 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 TPS65136RTER meets industry standards.
7.What is the process for return or replacement of TPS65136RTER?
All TPS65136RTER units undergo pre-shipment inspection (PSI). If there is an issue with TPS65136RTER, 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 TPS65136RTER part is unused and in its original packaging.
Return procedure for TPS65136RTER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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