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Texas Instruments LP5522TM/NOPB
- Part No.:
- LP5522TM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 6-WFBGA, DSBGA
- Datasheet:
-
LP5522TM/NOPB.pdf
- Description:
- IC LED DRIVER LINEAR 20MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:941
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Product details
Overview
LP5522TM/NOPB from Texas Instruments is a programmable high-side constant-current LED driver in a 6-bump DSBGA package (1.215 mm × 0.815 mm × 0.6 mm, 0.4 mm pitch), delivering 1–20 mA output current via external ISET resistor or defaulting to 5 mA, with autonomous blinking sequence execution (1–3 pulses, 1 ms–255 ms on time, 10 ms–2500 ms off time) controlled by a single digital input - used for indicator lighting in space-constrained handheld devices.
For engineers reviewing the LP5522TM/NOPB datasheet, LP5522TM/NOPB pinout, LP5522TM/NOPB application, or LP5522TM/NOPB equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, confirmed alternative options, and supply-chain support details specific to the LP5522TM/NOPB production variant.
Technical Context
The LP5522TM/NOPB operates autonomously without an external clock, entering active mode on a CTRL rising edge and supporting four command modes: Run, Run Once, Training Start, and Training End - all executed via counted rising edges within a defined command entering period (500 µs) followed by a blank period (1500 µs). It uses internal thermal shutdown (engages at 160°C, disengages at 140°C) and features 0.2 µA typical shutdown current.
Its constant-current high-side driver achieves low headroom voltage (35–100 mV at 10–20 mA), enabling efficient operation near LED forward voltage; current is set by ISET pin reference voltage (1.23 V) and mirroring ratio (1:400), yielding IOUT = 480 / RISET (kΩ) in mA. The device supports volatile memory programming of LED timing sequences and resets on power loss or POR activation below 1.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Operating Range | 2.7 V to 5.5 V - compatible with common Li-ion battery and 3.3 V/5 V system rails |
| LED Output Current | 1 mA to 20 mA - adjustable via external ISET resistor; 5 mA default if unconnected |
| LED On/Off Timing | 1 ms–255 ms on time, 10 ms–2500 ms off time - enables precise visual feedback sequencing |
| CTRL Input Thresholds | VIL ≤ 0.5 V, VIH ≥ 1.2 V - compatible with low-voltage logic controllers (e.g., 1.8 V GPIO) |
| Headroom Voltage (VHR) | 35 mV (10 mA), 70 mV (20 mA) - minimizes required VIN–VLED margin for efficiency |
| Shutdown Current | 0.2 µA typical - preserves battery life in standby mode of portable devices |
| Package | DSBGA-6 (YFQ0006), 0.4 mm pitch, 1.215 mm × 0.815 mm - ultra-compact footprint for thin mobile designs |
Pinout & Package
LP5522TM/NOPB uses a 6-pin DSBGA (YFQ0006) package: 1.215 mm × 0.815 mm × 0.6 mm body, 0.4 mm ball pitch, SNAGCU ball finish, MSL Level-1, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (VDD) | Power supply input | Accepts 2.7–5.5 V rail; powers internal circuitry and LED current source |
| B1 (ISET) | Analog current-setting input | Sets LED current via external resistor (IOUT = 480 / RISET); tied to VDD for 5 mA default |
| C1 (CTRL) | Digital control input | Single-wire interface for mode selection (Run, Run Once, Training); accepts 1.2 V logic-high minimum |
| A2 (LED) | High-side current source output | Drives LED anode; sinks up to 20 mA with <100 mV headroom at full load |
| B2 (GND) | Primary ground reference | Return path for VDD, CTRL, and internal logic; must be low-impedance for stable operation |
| C2 (GNDT) | Thermal ground terminal | Dedicated ground ball for thermal dissipation; electrically connected to GND but optimized for PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Single-wire programmable control | Eliminates need for I²C/SPI interface; reduces MCU GPIO count and PCB routing complexity |
| Volatile blink sequence memory | Enables field-programmable LED patterns (1–3 ON/OFF steps) without firmware update or EEPROM |
| Autonomous operation | No external clock or host supervision required after sequence launch - extends battery runtime |
| Low-headroom high-side driver | Supports LEDs with VF up to 2.6 V on 2.7 V supply - maximizes usable battery voltage range |
| Thermal shutdown protection | Self-protects against overtemperature (160°C trip) without external circuitry - improves system reliability |
Applications
| Smartphone Status Indicators | Wearable Device Alerts |
|---|---|
|
Use Scenario: Visual notification for incoming calls, messages, or charging status on slim smartphones with limited board area. IC Role / Device Role / Timing Role: High-side constant-current LED driver executing pre-programmed blink sequences autonomously. Use Value: Enables distinct, low-power visual cues without burdening the application processor - extends standby battery life by >30% vs. GPIO-driven LEDs. |
Use Scenario: Pulse-based activity feedback (e.g., step count, heart rate alert) on compact fitness trackers. IC Role / Device Role / Timing Role: Single-pin controllable LED sequencer with sub-millisecond timing resolution for human-perceptible effects. Use Value: Delivers consistent brightness and timing across varying battery voltage (2.7–5.5 V) - eliminates flicker or dimming during discharge. |
| Wireless Earbud Charging Case Lights | IoT Sensor Node Status Display |
|
Use Scenario: Multi-color LED indication (via multiple LP5522TM/NOPB units) for battery level and pairing status in TWS earbud cases. IC Role / Device Role / Timing Role: Independent, low-quiescent-current LED controller per channel - no shared bus contention. Use Value: Reduces BOM count vs. microcontroller + discrete FET solution; saves 0.8 mm² PCB area per channel in 1.2 mm-thick enclosures. |
Use Scenario: Low-duty-cycle status signaling (e.g., network connectivity, sensor fault) on battery-powered environmental sensors. IC Role / Device Role / Timing Role: Standby-mode LED driver with 0.2 µA shutdown current - minimizes average system current draw. Use Value: Extends 10-year battery life target by reducing LED-related leakage by 99.8% compared to always-on GPIO solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP55231TM/NOPB | 3-channel version with I²C interface, integrated pattern engine, and non-volatile memory - larger 12-bump DSBGA package | Supports synchronized multi-LED effects and retains sequences across power cycles - suited for UI-rich consumer electronics | Select when multi-LED coordination, persistent patterns, or host-controlled timing are required; not drop-in due to pin count and protocol change |
| TPS61165DRVR | Boost-based LED driver with PWM dimming, 30 V output capability, and 1.2 MHz switching - 6-pin WSON package | Drives higher-VF LEDs (e.g., white) from 2.7 V input; requires external inductor and diode - higher BOM cost and EMI risk | Select when driving >3 V LEDs or needing analog/PWM dimming flexibility; incompatible pinout and topology - redesign required |
Compared with LP5522TM/NOPB, LP55231TM/NOPB adds channel count and memory persistence at the cost of interface complexity and size, while TPS61165DRVR trades simplicity and low headroom for high-VF capability and boost architecture - neither is pin-compatible, and both require layout and firmware changes.
Availability
LP5522TM/NOPB is available at Aetrix Electronics and suitable for smartphone cosmetics, wearable device alerts, and wireless earbud status lighting requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LP5522TM/NOPB 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LP5522TM/NOPB belongs to TI's low-power LED driver product line, designed specifically for space-constrained portable devices requiring autonomous, single-wire-controllable visual feedback with minimal quiescent current and ultra-small footprint.
FAQ
What is the function of the GNDT pin on the LP5522TM/NOPB?
The GNDT pin on the LP5522TM/NOPB is a dedicated thermal ground terminal, electrically connected to the internal ground plane but physically optimized for heat dissipation. It should be connected to a large PCB copper pour to enhance thermal performance - unlike the standard GND pin (B2), GNDT (C2) improves junction-to-board thermal resistance without affecting signal integrity or logic reference.
Can the LP5522TM/NOPB drive multiple LEDs simultaneously?
No, the LP5522TM/NOPB drives only one LED per device via its single high-side current source output (LED pin). To control multiple LEDs with independent timing, multiple LP5522TM/NOPB units are required - each configured separately using its own CTRL line. The device does not support multiplexing or parallel outputs.
How is LED current set on the LP5522TM/NOPB without an external resistor?
When no external resistor is connected to the ISET pin, the LP5522TM/NOPB defaults to 5 mA LED output current. In this configuration, the ISET pin must be tied directly to VDD to ensure proper internal biasing - leaving ISET floating will result in undefined current and potential malfunction.
What happens if the CTRL signal remains high beyond the LED timeout period on the LP5522TM/NOPB?
If the CTRL signal stays high longer than the LED Timeout ON time (319 ms typ.), the LP5522TM/NOPB saturates the ON-time counter, records the maximum value, switches the LED off automatically, and begins OFF-time capture. If CTRL remains high past the LED Timeout OFF time (3.19 s typ.), the OFF-time counter saturates and the device enters Standby mode - ensuring predictable behavior under invalid command conditions.
Is the LP5522TM/NOPB suitable for automotive applications?
No, the LP5522TM/NOPB is rated for –30°C to +85°C ambient temperature and lacks AEC-Q200 qualification, automotive-grade screening, or extended temperature support. It is intended for commercial portable electronics - for automotive interior lighting or dashboard indicators, TI recommends AEC-Q100-qualified alternatives such as the LP5569 or TPS61169.
LP5522TM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 20mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
LP5522TM/NOPB FAQ
1.How can I place an order for LP5522TM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5522TM/NOPB 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 LP5522TM/NOPB reliable?
The price and inventory of LP5522TM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5522TM/NOPB is usually 5 days.
3.What payment methods are accepted for LP5522TM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5522TM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5522TM/NOPB?
LP5522TM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5522TM/NOPB 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 LP5522TM/NOPB?
For technical support, including LP5522TM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5522TM/NOPB requirements.
6.How does Aetrix verify that LP5522TM/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5522TM/NOPB 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 LP5522TM/NOPB meets industry standards.
7.What is the process for return or replacement of LP5522TM/NOPB?
All LP5522TM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5522TM/NOPB, 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 LP5522TM/NOPB part is unused and in its original packaging.
Return procedure for LP5522TM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP5522TM/NOPB Tags
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