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Texas Instruments TPS61162AYFFR
- Part No.:
- TPS61162AYFFR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 9-UFBGA, DSBGA
- Datasheet:
-
TPS61162AYFFR.pdf
- Description:
- IC LED DRV RGLTR PWM 30MA 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TPS61162AYFFR from Texas Instruments is a dual-channel white LED driver IC designed for smartphone backlighting with integrated 1.5A/40V MOSFET, 1.2MHz switching frequency, and dual 30mA current sinks with 1% typical current matching. It operates from 2.7V–6.5V input and delivers adaptive boost output with 90mV headroom control for high-efficiency WLED string driving in single-cell Li-ion battery systems.
For engineers reviewing the TPS61162AYFFR datasheet, TPS61162AYFFR pinout, TPS61162AYFFR application, or TPS61162AYFFR equivalent, key selection considerations include OVP threshold (26.5V), EasyScale™ one-wire digital dimming support, PWM dimming interface compatibility, 9-bit brightness resolution, and DSBGA-9 (YFF) package thermal performance (RθJA = 107°C/W).
Technical Context
The TPS61162AYFFR implements current-mode PWM control with slope compensation to stabilize operation above 50% duty cycle. Its dual current-sink architecture regulates two independent WLED strings while automatically selecting the lower IFBx voltage to clamp the boost output at 90mV regulation-minimizing power dissipation in the current sinks.
It supports two mutually exclusive dimming interfaces: EasyScale™ one-wire digital control via EN pin (9-bit code, 511 steps) or standard PWM input on the dedicated PWM pin. Protection includes SW overvoltage (26.5V typ), IFBx overvoltage (4.5V typ), thermal shutdown (160°C), and open/short LED detection with latch-off behavior on dual-string open fault.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6.5V - supports direct connection to single-cell Li-ion battery (2.7V cutoff to 4.2V fully charged). |
| Switch MOSFET | Integrated 1.5A/40V low-side FET with 0.25Ω RDS(on) - eliminates external switch, reduces BOM count and layout area. |
| Current Sink Accuracy | ±2% over –40°C to 85°C - ensures consistent brightness across temperature and unit-to-unit variation in dual-string configurations. |
| OVP Threshold | 26.5V (typical) on SW pin - protects against LED string open-circuit failure without requiring external sensing circuitry. |
| Headroom Voltage | 90mV (typical) at IFBx pins - enables minimal voltage overhead for current regulation, maximizing power efficiency in low-VF LED strings. |
| Dimming Resolution | Up to 9-bit (511 steps) via EasyScale™ - provides fine-grained brightness control for high-end display gamma correction. |
| Efficiency | Up to 90% - achieved through adaptive boost output, PFM mode at light load, and low-RDS(on) internal FET. |
Pinout & Package
TPS61162AYFFR uses a 9-pin DSBGA (YFF) package with 0.4mm pitch and bottom-side ball layout optimized for compact smartphone PCBs. Thermal resistance is RθJA = 107°C/W and RθJB = 18.1°C/W, enabling reliable operation under sustained backlight load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ISET | Full-scale current programming input | Resistor-connected pin sets dual-channel full-scale current (e.g., 20µA → 20.6mA per channel); voltage = 1.229V (typ). |
| IFB1 / IFB2 | Current sink feedback inputs | Regulated at 90mV (typ); device selects lower voltage for adaptive boost control; grounding either disables that channel. |
| PWM | Digital dimming signal input | Accepts 10–100kHz PWM signals; logic high ≥1.2V enables operation; low ≥20ms triggers shutdown. |
| EN | Enable / EasyScale™ interface input | High ≥1.2V enables device; specific low-pulse pattern (260µs within 1ms window) selects EasyScale™ mode. |
| VIN | Main power supply input | Connects directly to battery rail; UVLO activates below 2.3V (falling) with 100mV hysteresis. |
| SW | Internal MOSFET drain node | Drives external boost inductor; monitored for 26.5V OVP; requires external Schottky diode and output capacitor. |
| GND | Power and signal reference | Common return path for VIN, IFBx, PWM, EN, COMP; critical for noise immunity and thermal conduction. |
| COMP | Error amplifier output | Connects to 330nF compensation capacitor; controls boost loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Output Control | Selects lower IFBx voltage to regulate at 90mV, minimizing output voltage and power loss in current sinks. |
| Two Dimming Interfaces | Hardware-selectable: PWM pin for analog-style dimming or EN pin for 9-bit EasyScale™ digital command protocol. |
| WLED Open/Short Protection | Detects single-string open (latch-off), dual-string open (SW OVP latch), and multi-diode short (IFBx OVP trip). |
| PFM Mode at Light Load | Automatically enters burst-mode operation below ~5mA per channel to maintain >85% efficiency at dimmed brightness. |
| Built-in Soft Start | 5ms ramp-up with reduced 0.7A peak switch current limit prevents inrush and overshoot during startup. |
Applications
| Smartphone Backlighting | Handheld GPS Receiver Display |
|---|---|
|
Use Scenario: Driving dual 5-series WLED strings (10 LEDs total) in a 5.5-inch AMOLED smartphone with single-cell Li-ion battery (3.0–4.2V). IC Role / Device Role / Timing Role: Dual-channel current sink regulator with adaptive boost converter; manages LED current matching, OVP, and thermal safety in real time. Use Value: 1% current matching ensures uniform screen luminance; 90mV headroom improves system efficiency by ~8% vs. fixed-headroom drivers. |
Use Scenario: Powering a 3.2-inch transflective LCD in an outdoor GPS unit with wide-temperature operation (–20°C to 70°C). IC Role / Device Role / Timing Role: Constant-current WLED driver with UVLO, thermal shutdown, and robust ESD protection (±2kV HBM). Use Value: Stable brightness across battery discharge and ambient temperature; 2.7V minimum input extends runtime down to battery end-of-life. |
| Media Tablet LCD Backlight | PDA Main Display Illumination |
|
Use Scenario: Backlighting a 7-inch WVGA LCD panel in a media tablet using 2×(4-series + 1-parallel) WLED configuration. IC Role / Device Role / Timing Role: Dual-channel LED driver with programmable full-scale current and 100:1 PWM dimming range. Use Value: 9-bit EasyScale™ dimming enables precise gamma curve implementation; 1.2MHz switching avoids audible noise in thin bezel designs. |
Use Scenario: Illuminating a QVGA monochrome LCD in a legacy PDA with space-constrained PCB and no dedicated PWM controller. IC Role / Device Role / Timing Role: Compact WLED driver with one-wire digital interface, eliminating need for MCU PWM peripherals. Use Value: Reduces MCU GPIO usage and firmware complexity; 260µs EasyScale™ detection window enables fast boot-time configuration. |
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 |
|---|---|---|---|
| TPS61163AYFFR | OVP threshold is 37.5V (vs. 26.5V); otherwise identical pinout, features, and specs. | Better suited for higher-VF LED strings (e.g., >20V total forward drop) or systems requiring margin against transient overvoltage. | Select TPS61163AYFFR only if system-level testing confirms 26.5V OVP is insufficient; not a drop-in replacement due to different protection threshold. |
| RT8542GQW | Single-channel, 40V/1.5A boost WLED driver with 10-bit I²C interface; no EasyScale™ or dual-sink capability. | Requires two ICs for dual-string operation; adds I²C bus routing and address management overhead. | Consider only when design already uses I²C infrastructure and dual-channel integration is not required; higher BOM cost and board area. |
Compared with TPS61162AYFFR, TPS61163AYFFR offers higher OVP headroom but identical functionality and layout-making it suitable only for higher-VF strings. RT8542GQW lacks dual-sink integration and requires external I²C control, increasing system complexity and footprint versus the single-chip, interface-flexible TPS61162AYFFR.
Availability
TPS61162AYFFR is available at Aetrix Electronics and suitable for smartphone backlighting, handheld GPS receivers, media tablet displays, and PDA main displays requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
Supply support for TPS61162AYFFR 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 experience in mobile power solutions.
The TPS6116xA family was engineered specifically for space-constrained, battery-powered mobile displays-delivering high-efficiency dual-channel WLED driving with integrated protection and flexible digital/analog dimming in ultra-thin DSBGA packages.
FAQ
What is the OVP threshold for TPS61162AYFFR?
The TPS61162AYFFR has a fixed overvoltage protection threshold of 26.5V (typical) on the SW pin, triggered after 16–32 consecutive switching cycles exceeding this level. This protects against LED string open-circuit failures and is distinct from the 4.5V IFBx OVP threshold used for short-circuit detection. The TPS61162AYFFR does not support user-adjustable OVP.
How do I configure full-scale current for each channel of TPS61162AYFFR?
Full-scale current per channel of TPS61162AYFFR is set by an external resistor (RISET) connected between ISET pin and GND, calculated as RISET = VISET_full / (KISET_full × IFB_full), where VISET_full = 1.229V, KISET_full = 1030, and IFB_full is the desired full-scale current (e.g., 20mA → RISET ≈ 60.4kΩ). The TPS61162AYFFR uses the same resistor for both channels.
Does TPS61162AYFFR support both PWM and digital dimming simultaneously?
No - the TPS61162AYFFR supports only one dimming interface at a time. During startup, it detects whether the EasyScale™ one-wire protocol is selected (via EN pin pulse sequence) or defaults to PWM dimming on the PWM pin. Once configured, the unused interface is disabled; simultaneous use is not supported and may cause undefined behavior.
What happens if both IFB1 and IFB2 pins are grounded on TPS61162AYFFR?
If both IFB1 and IFB2 pins are connected to GND, the TPS61162AYFFR will not start up - the device detects this condition during initialization and remains in shutdown state. To disable one channel, ground only its corresponding IFBx pin; the other channel remains active and regulated. Grounding both violates the startup requirement for valid current-sink feedback.
Can TPS61162AYFFR drive more than 10 WLEDs?
Yes - the TPS61162AYFFR can drive up to 10 LEDs per string (20 total) in a 2×(5-series) configuration, assuming typical 3.2V WLED forward voltage (16V total per string). With its 26.5V SW OVP threshold and adaptive boost, it supports configurations up to ~24V total string voltage. Higher counts require verifying VF distribution and thermal derating per the TPS61162AYFFR thermal data (RθJA = 107°C/W).
TPS61162AYFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-DSBGA
TPS61162AYFFR FAQ
1.How can I place an order for TPS61162AYFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61162AYFFR 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 TPS61162AYFFR reliable?
The price and inventory of TPS61162AYFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61162AYFFR is usually 5 days.
3.What payment methods are accepted for TPS61162AYFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61162AYFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61162AYFFR?
TPS61162AYFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61162AYFFR 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 TPS61162AYFFR?
For technical support, including TPS61162AYFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61162AYFFR requirements.
6.How does Aetrix verify that TPS61162AYFFR is sourced from the original manufacturer or authorized distributors?
All TPS61162AYFFR 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 TPS61162AYFFR meets industry standards.
7.What is the process for return or replacement of TPS61162AYFFR?
All TPS61162AYFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61162AYFFR, 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 TPS61162AYFFR part is unused and in its original packaging.
Return procedure for TPS61162AYFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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