My Inquiry
My Account
Texas Instruments TPS61151DRCRG4
- Part No.:
- TPS61151DRCRG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS61151DRCRG4.pdf
- Description:
- IC LED DRV RGLTR PWM 35MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,571
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61151DRCRG4 from Texas Instruments is a dual-output, single-inductor boost WLED driver IC for portable backlighting. It operates from 2.5 V to 6 V input, delivers up to 27 V output per channel, integrates a 0.7-A N-channel MOSFET and built-in power diode, and supports independent PWM or analog dimming of two LED strings-ideal for clamshell phone sub/main displays.
For engineers reviewing the TPS61151DRCRG4 datasheet, TPS61151DRCRG4 pinout, TPS61151DRCRG4 application, or TPS61151DRCRG4 equivalent, key selection criteria include its 22-V overvoltage protection threshold, 1.2-MHz fixed-frequency PWM control, dual current-sink architecture with 330-mV IFB regulation voltage, and VSON-10 (3 mm × 3 mm) thermal-pad package for compact, high-efficiency LED biasing.
Technical Context
The TPS61151DRCRG4 uses a current-mode PWM boost controller with adaptive feedback headroom: it dynamically regulates the higher-voltage IFB pin (IFB1 or IFB2) to 330 mV while maintaining sufficient headroom for the other sink, enabling mismatched LED string voltages up to 22 V. Its 1.2-MHz switching frequency minimizes output ripple and avoids audible noise in portable applications.
Each output is controlled via dedicated SELx pins supporting independent enable/disable, PWM dimming (up to 30 kHz), or shutdown (both SELx low >40 ms). The integrated 0.9-Ω rDS(on) MOSFET and 1-V forward-drop diode support up to 83% efficiency at 3.6-V input and 15-V output with 10-μH inductor and 1-μF input/output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - compatible with single-cell Li-ion battery operation without external LDO pre-regulation. |
| Max Output Voltage | 22 V - OVP threshold specific to TPS61151 variant; prevents overstress on 25-V output capacitors or internal 30-V FET. |
| Switching Frequency | 1.2 MHz (fixed) - enables use of small 10-μH inductors and reduces EMI filtering requirements. |
| IFB Regulation Voltage | 330 mV (typical) - sets current sink reference; output current = (1.229 V / RISET) × 900 (KISET). |
| Integrated Switch | 0.7-A, 0.9-Ω rDS(on) N-channel MOSFET - eliminates external high-side switch and reduces BOM count. |
| Thermal Protection | 160°C shutdown with 15°C hysteresis - prevents damage during sustained high-power or poor PCB thermal design. |
| Quiescent Current | 2 mA (operating), 1.5 μA (shutdown) - extends battery life in standby and display-off states. |
Pinout & Package
VSON-10 (DRC) package with 3.00 mm × 3.00 mm body and exposed thermal pad soldered to analog ground for optimal power dissipation (RθJB = 19.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10 IFB1, IFB2 |
Current feedback input | Sense node for each LED string; regulated to 330 mV to set precise constant current; disabling opens current path. |
| 2, 9 ISET1, ISET2 |
Current programming input | Analog programming pin; resistor value sets output current via KISET = 900 multiplier and 1.229-V internal reference. |
| 3, 4 SEL1, SEL2 |
Output enable/dimming control | Logic inputs: high = enable, low = disable; PWM signal enables linear brightness control; both low >40 ms = full shutdown. |
| 5 VIN |
Main power input | Supplies boost stage and internal circuitry; includes 1.8-V UVLO with 70-mV hysteresis for stable start-up from fading battery. |
| 6 SW |
Boost switch node | Connection point between internal MOSFET drain and inductor; requires low-ESR ceramic capacitor to ground for stability. |
| 7 IOUT |
Boost output / LED anode supply | High-voltage rail driving both LED strings; voltage adapts to highest-string forward drop plus 330-mV headroom. |
| 8 GND |
Power and signal ground | Return path for input/output capacitors and current sinks; must be low-impedance with short traces to thermal pad. |
| Exposed Pad | Thermal & electrical ground | Must be soldered to PCB ground plane with ≥4 thermal vias for reliable 125°C junction operation under load. |
Key Features
| Feature | Design Value |
|---|---|
| Single-inductor dual-output topology | Reduces solution size by eliminating second inductor; supports independent current programming and dimming per string. |
| Adaptive IFB regulation | Dynamically selects higher-voltage IFB pin for feedback, enabling up to 22-V differential between LED strings without loss of regulation. |
| Built-in soft-start (16-step, 64-cycle steps) | Prevents inrush current during startup; ensures boost output ramps synchronously with current sink activation for stable LED turn-on. |
| PWM dimming noise suppression | Disconnects LED strings from IOUT during SEL low phase, minimizing output capacitor ripple and audible ceramic ringing. |
| Integrated power diode | Eliminates external Schottky diode; reduces footprint and thermal stress while maintaining 83% peak efficiency at 15-V output. |
Applications
| Sub- and Main-Display Backlight | Display and Keypad Backlight |
|---|---|
|
Use Scenario: Dual-screen mobile device (e.g., clamshell phone) requiring independent brightness control for primary and secondary LCD panels. IC Role / Device Role / Timing Role: Dual constant-current WLED driver providing isolated, programmable bias for two physically separate LED arrays. Use Value: Enables simultaneous or staggered backlight activation with matched dimming linearity up to 30 kHz, leveraging single-inductor efficiency and minimal board area. |
Use Scenario: Feature phone or industrial handheld with main display and illuminated keypad requiring distinct brightness levels. IC Role / Device Role / Timing Role: Single-chip solution delivering regulated current to display LEDs (via IFB1/ISET1) and keypad LEDs (via IFB2/ISET2) with independent SEL control. Use Value: Eliminates need for two discrete drivers; supports different forward voltage stacks (e.g., 6 vs. 3 WLEDs) using adaptive IFB headroom management. |
| Up to 14-WLED Driver | Compact Portable Display Power |
|
Use Scenario: High-brightness monolithic display (e.g., ruggedized PDA or medical monitor) using 14 parallel WLEDs across two strings. IC Role / Device Role / Timing Role: High-efficiency boost converter with dual 35-mA current sinks, driving combined load up to 70 mA with shared inductor and output rail. Use Value: Achieves >80% efficiency at 3.6-V input/15-V output while fitting within 3 mm × 3 mm footprint-critical for space-constrained designs. |
Use Scenario: Battery-powered wearable or IoT display where PCB real estate and thermal performance are tightly constrained. IC Role / Device Role / Timing Role: Integrated power management IC combining boost conversion, current regulation, OVP, UVLO, and thermal shutdown in one VSON-10 package. Use Value: Reduces bill-of-materials by 4 components (MOSFET, diode, soft-start RC, OVP comparator) versus discrete solutions, lowering assembly cost and test complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output WLED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61150DRCRG4 | 28-V OVP threshold; identical pinout, package, and functional architecture. | Supports higher-output-voltage LED strings (e.g., 7–8 WLEDs in series) but requires 28-V-rated output capacitor. | Select when LED stack forward voltage exceeds 22 V and system can accommodate higher-voltage components. |
| LM3409QMYX/NOPB | External MOSFET controller; no integrated switch or diode; adjustable 200-kHz–2-MHz frequency. | Requires external high-side FET and Schottky diode; supports higher current (>500 mA) but larger solution size. | Choose for >35-mA/string designs or when thermal budget prohibits integrated switch dissipation in VSON-10. |
Compared with TPS61151DRCRG4, TPS61150DRCRG4 offers higher OVP tolerance at the cost of stricter output capacitor rating, while LM3409QMYX/NOPB trades integration for scalability and thermal flexibility-making TPS61151DRCRG4 optimal for space- and efficiency-critical ≤35-mA dual-string applications.
Availability
TPS61151DRCRG4 is available at Aetrix Electronics and suitable for clamshell phone displays, portable medical UIs, and industrial handheld backlights requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS61151DRCRG4 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 LED lighting control.
The TPS6115x product line was designed specifically for ultra-compact, high-efficiency dual-string WLED backlighting in battery-powered portable devices-emphasizing integration, thermal robustness, and flexible dimming control.
FAQ
What is the overvoltage protection (OVP) threshold for TPS61151DRCRG4?
The TPS61151DRCRG4 has a fixed 22-V overvoltage protection threshold, as confirmed in Table 1 of the SLVS625E datasheet. This differs from the TPS61150 variant (28 V) and protects the internal 30-V MOSFET and external 25-V output capacitors from overvoltage stress during open-circuit LED conditions. The OVP hysteresis is 440 mV.
Can TPS61151DRCRG4 drive mismatched LED strings with different forward voltages?
Yes, the TPS61151DRCRG4 supports mismatched strings via adaptive IFB regulation: it dynamically regulates the higher-voltage IFB pin (IFB1 or IFB2) to 330 mV while maintaining sufficient headroom for the other sink. This allows one string to operate at up to 22 V and the other at a lower voltage-enabling configurations like 7-WLED + 4-WLED stacks without external compensation.
What is the maximum PWM dimming frequency supported by TPS61151DRCRG4?
The TPS61151DRCRG4 supports PWM dimming up to 30 kHz, limited by the 6-μs current sink settle time (Tisink). For a 20% minimum duty cycle, this enables a maximum frequency of ~33 kHz-sufficient to place switching noise above the audible range (20 kHz) and eliminate inductor/capacitor buzz. Soft-start is disabled during PWM to preserve linearity.
Does TPS61151DRCRG4 require an external Schottky diode?
No, the TPS61151DRCRG4 integrates a power diode with 1-V forward voltage at 0.7-A current, eliminating the need for an external Schottky diode. This reduces solution size, component count, and thermal design complexity while maintaining up to 83% efficiency at typical operating points (3.6-V input, 15-V output, 10-μH inductor).
How does the thermal pad on the TPS61151DRCRG4 VSON-10 package affect reliability?
The exposed thermal pad on the TPS61151DRCRG4 must be soldered to the PCB ground plane with ≥4 thermal vias to achieve the specified RθJB = 19.2°C/W. Without proper thermal connection, junction temperature can exceed 125°C under load, triggering thermal shutdown (160°C threshold) and causing intermittent operation or premature failure.
TPS61151DRCRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- 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):
- 2.5V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 27V
- Current - Output / Channel:
- 35mA
- Frequency:
- 1.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS61151DRCRG4 FAQ
1.How can I place an order for TPS61151DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61151DRCRG4 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 TPS61151DRCRG4 reliable?
The price and inventory of TPS61151DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61151DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS61151DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61151DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61151DRCRG4?
TPS61151DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61151DRCRG4 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 TPS61151DRCRG4?
For technical support, including TPS61151DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61151DRCRG4 requirements.
6.How does Aetrix verify that TPS61151DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS61151DRCRG4 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 TPS61151DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS61151DRCRG4?
All TPS61151DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61151DRCRG4, 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 TPS61151DRCRG4 part is unused and in its original packaging.
Return procedure for TPS61151DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61151DRCRG4 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
