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Texas Instruments TPS61162YFFR
- Part No.:
- TPS61162YFFR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS61162YFFR.pdf
- Description:
- IC LED DRV RGLTR PWM 30MA 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,062
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Product details
Overview
TPS61162YFFR from Texas Instruments is a dual-channel white LED driver IC designed for smartphone backlighting, featuring an integrated 1.5-A/40-V MOSFET, 1.2-MHz boost switching frequency, dual current sinks up to 30 mA each with 1% typical current matching, and adaptive output voltage regulation to minimize headroom (90 mV typical) - enabling efficient driving of up to 7-series × 2-parallel WLED strings from a single-cell Li-ion battery (2.7 V to 6.5 V).
For engineers reviewing the TPS61162YFFR datasheet, TPS61162YFFR pinout, TPS61162YFFR application, or TPS61162YFFR equivalent, key selection considerations include its DSBGA-9 package footprint, dual-interface dimming (PWM and EasyScale™ one-wire), 26.5-V SW overvoltage protection, built-in open/short LED fault detection, and thermal shutdown at 160°C - all critical for compact, high-reliability mobile display power designs.
Technical Context
The TPS61162YFFR implements a current-mode PWM-controlled asynchronous boost converter with integrated low-side switch, where output voltage is dynamically regulated by the lower of two IFBx feedback voltages to maintain minimal headroom across mismatched LED strings. Its error amplifier (30–80 µmho transconductance, 1.65 MHz crossover with 5 pF) drives COMP to stabilize loop response while slope compensation ensures stability above 50% duty cycle.
Dimming is supported via two mutually exclusive modes: hardware PWM input on the PWM pin (40–100 kHz, up to 100:1 ratio), or digital 9-bit brightness code programming via EasyScale™ on the EN pin - with automatic interface detection during startup based on EN pin timing (260 µs low pulse within 1 ms window). Channel enable/disable is determined by IFBx pin state: grounded = disabled, floating or connected to LED string = active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6.5 V - supports direct connection to single-cell Li-ion batteries without pre-regulation. |
| Switching Frequency | 1.2 MHz (typical) - enables use of small 4.7 µH inductors and reduces EMI filtering requirements. |
| Max Output Current per Channel | 30 mA - programmable via ISET resistor; supports dual 7s2p WLED configurations up to 26.5 V total string voltage. |
| Current Matching Accuracy | ±1% (typical) - ensures uniform brightness across dual LED strings without external calibration. |
| Headroom Voltage | 90 mV (typical at IFBx) - minimizes power loss in current sinks, improving overall efficiency up to 90%. |
| SW Overvoltage Threshold | 26.5 V (typical) - protects against LED open-circuit faults by latching off the boost switch when exceeded. |
| Thermal Shutdown | 160°C (typical) with 15°C hysteresis - prevents damage during sustained high-power operation in confined PCB layouts. |
Pinout & Package
TPS61162YFFR is housed in a 1.336 mm × 1.336 mm, 9-pin DSBGA (YFF) package optimized for ultra-thin mobile applications. The ball layout follows standard bottom-view DSBGA mapping with solder-ball pitch of 0.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1: ISET | Full-scale current programming input | Resistor-connected pin sets dual-channel full-current value (e.g., 63.4 kΩ → 20 mA per channel). |
| A2: IFB2 | Current sink feedback input (Channel 2) | Regulated at 90 mV; connects to cathode of second LED string to control current and enable adaptive boost voltage. |
| A3: IFB1 | Current sink feedback input (Channel 1) | Identical function to IFB2; lower-voltage IFBx determines boost output voltage to minimize headroom. |
| B1: PWM | Digital dimming control input | Accepts 40–100 kHz PWM signal; low >20 ms disables device; high enables PWM dimming mode. |
| B2: COMP | Error amplifier output | Connects external 330 nF compensation capacitor to stabilize boost control loop dynamics. |
| B3: GND | Power and signal reference ground | Common return path for VIN, SW, IFBx, and internal circuits; requires low-impedance PCB plane. |
| C1: EN | Enable / EasyScale™ data input | Logic high enables device; specific low-pulse timing (260 µs within 1 ms) selects EasyScale™ digital interface. |
| C2: VIN | Main power supply input | Accepts 2.7–6.5 V; includes 2.3 V UVLO with 100 mV hysteresis to prevent erratic startup near battery depletion. |
| C3: SW | Internal MOSFET drain node | Connects to boost inductor; switches at 1.2 MHz; rated for 40 V max and 1.5 A peak current. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Output Regulation | Automatically tracks lower IFBx voltage to maintain only 90 mV headroom - reducing current sink power dissipation and improving system efficiency. |
| Dual Dimming Interface Support | Hardware PWM (pin-based) and software-configurable EasyScale™ (EN pin) - enables flexible integration with MCU GPIOs or dedicated PWM generators. |
| Integrated Fault Protection | Simultaneous SW overvoltage (26.5 V), IFBx overvoltage (4.5 V), LED open/short detection, and thermal shutdown - eliminates need for external monitoring circuitry. |
| Low-Headroom Current Sinks | Regulates LED current with just 90 mV compliance voltage - allows higher LED string count within limited battery voltage range. |
| Soft-Start with Inrush Control | Initial 5 ms current limit (0.7 A) prevents input surge; transitions to full 1.5 A limit after stabilization - protects input capacitors and battery. |
Applications
| Smartphone LCD Backlight | Tablet Display Backlight |
|---|---|
Use Scenario: Driving dual 7-series × 2-parallel WLED strings in a 5.5-inch AMOLED-compatible LCD panel powered by a 3.6 V nominal Li-ion battery. IC Role / Device Role / Timing Role: Dual-channel WLED driver providing regulated current, adaptive boost voltage, and synchronized PWM/EasyScale™ dimming control. Use Value: Enables uniform brightness, >90% efficiency at 20 mA per string, and flicker-free dimming down to 0.1% duty cycle without color shift. | Use Scenario: Backlighting a 10.1-inch IPS LCD with four independent LED strings (2 per channel), requiring precise current matching and thermal-aware operation. IC Role / Device Role / Timing Role: Dual current sink controller with adaptive headroom management and SW OVP-triggered fault shutdown. Use Value: Maintains ±1% current matching across temperature (–40°C to +85°C), preventing visible luminance gradients during extended video playback. |
| Handheld GPS Receiver | Portable Medical Display |
Use Scenario: Illuminating a sunlight-readable transflective LCD in a ruggedized GPS unit operating from 2.7–4.2 V battery range with intermittent high-brightness demand. IC Role / Device Role / Timing Role: High-efficiency boost LED driver with UVLO hysteresis and robust open-string protection. Use Value: Ensures reliable backlight operation down to 2.7 V input while surviving repeated LED disconnection events during field use. | Use Scenario: Powering a certified medical-grade diagnostic display requiring fail-safe LED fault reporting and traceable thermal margin. IC Role / Device Role / Timing Role: Safety-aware WLED driver with latched-off OVP response, thermal shutdown with hysteresis, and no single-point failure in current regulation path. Use Value: Meets IEC 62304 Class B requirements via hardware-enforced fault isolation and deterministic shutdown behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61160YFFR | Lacks EasyScale™ interface; supports PWM dimming only; identical pinout, package, and electrical specs otherwise. | Suitable for cost-sensitive designs where MCU GPIOs are constrained and only hardware PWM is available. | Select when digital interface capability is unnecessary and BOM simplification is prioritized over firmware flexibility. |
| RT8542GQW | Fixed 1.5 MHz switching frequency; no integrated OVP on SW pin; requires external resistive divider for output voltage setting. | Better suited for industrial displays with stable input rails and less stringent fault coverage requirements. | Choose when higher switching frequency enables smaller magnetics, and system-level protection handles open-circuit conditions. |
Compared with TPS61162YFFR, TPS61160YFFR offers identical analog performance but removes digital dimming capability - reducing firmware complexity at the cost of MCU resource flexibility; RT8542GQW trades integrated protection and adaptive regulation for higher frequency and simpler external component count, shifting fault management responsibility to the system level.
Availability
TPS61162YFFR is available at Aetrix Electronics and suitable for smartphone backlighting, tablet display power, handheld GPS receivers, and portable medical displays requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS61162YFFR 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 and precision analog IC design.
The TPS61162YFFR belongs to TI's WLED backlight driver product line, engineered specifically for space-constrained, battery-powered mobile displays demanding high current accuracy, adaptive voltage regulation, and robust fault protection in sub-2 mm² packages.
FAQ
What is the recommended inductor value for TPS61162YFFR?
The TPS61162YFFR is optimized for a 4.7 µH shielded power inductor with saturation current ≥1.5 A. TI's datasheet specifies 4.7 µH as the nominal value, with acceptable range of 4.7–10 µH. Using 4.7 µH ensures stable 1.2-MHz operation, minimal output ripple, and compatibility with the internal current-mode control loop - critical for maintaining 1% current matching between channels in the TPS61162YFFR.
How does TPS61162YFFR handle LED string mismatches?
The TPS61162YFFR automatically regulates its boost output voltage to match the higher forward voltage string while maintaining only 90 mV headroom on the lower-voltage string. This adaptive control ensures both channels operate in regulation without excess power dissipation - a core feature confirmed in the TPS61162YFFR functional block diagram and "Detailed Description" section of the datasheet.
Can TPS61162YFFR drive a single LED string?
Yes - TPS61162YFFR supports single-string operation by grounding the unused IFBx pin (e.g., IFB2), which disables that channel and configures the boost regulator to track only the active IFB1 voltage. The device remains fully functional with identical current accuracy, dimming control, and protection features - as verified in Section 8.3.3 ("IFBx Pin Unused") of the TPS61162YFFR datasheet.
What is the maximum PWM dimming frequency supported by TPS61162YFFR?
The TPS61162YFFR supports PWM dimming frequencies from 40 kHz to 100 kHz, as specified in Section 7.3 ("Recommended Operating Conditions"). Operation above 40 kHz avoids audible noise and ensures smooth brightness control; frequencies beyond 100 kHz may degrade dimming linearity due to internal timing constraints - a limitation explicitly defined for the TPS61162YFFR in its electrical characteristics table.
Does TPS61162YFFR require external compensation components?
Yes - the TPS61162YFFR requires an external 330 nF capacitor connected between the COMP pin and GND to stabilize the boost converter control loop. This compensation network is mandatory for stable operation and is explicitly called out in the "Typical Application" schematic, Section 7.3, and Figure 9 of the TPS61162YFFR datasheet.
TPS61162YFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 6.5V
- Voltage - Output:
- 2.7V ~ 27V
- Current - Output / Channel:
- 30mA
- Frequency:
- 1.2MHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-DSBGA
TPS61162YFFR FAQ
1.How can I place an order for TPS61162YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61162YFFR 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 TPS61162YFFR reliable?
The price and inventory of TPS61162YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61162YFFR is usually 5 days.
3.What payment methods are accepted for TPS61162YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61162YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61162YFFR?
TPS61162YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61162YFFR 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 TPS61162YFFR?
For technical support, including TPS61162YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61162YFFR requirements.
6.How does Aetrix verify that TPS61162YFFR is sourced from the original manufacturer or authorized distributors?
All TPS61162YFFR 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 TPS61162YFFR meets industry standards.
7.What is the process for return or replacement of TPS61162YFFR?
All TPS61162YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61162YFFR, 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 TPS61162YFFR part is unused and in its original packaging.
Return procedure for TPS61162YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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