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Texas Instruments LP8727TME-B/NOPB
- Part No.:
- LP8727TME-B/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 25-WFBGA, DSBGA
- Datasheet:
-
LP8727TME-B/NOPB.pdf
- Description:
- IC INTFACE SPECIALIZED 25DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
LP8727TME-B/NOPB from Texas Instruments is a highly integrated micro/mini USB interface IC with 28V overvoltage-protected Li-ion charger, dual-path analog multiplexer (USB/UART/audio), and dual LDOs (ID detection & EXPDET). It delivers 50 mA at 4.85 V from EXPDET, supports −2.0 V to +3.6 V analog signal range via charge pump, and enables USB charging specification Rev. 1.1 compliance in smartphone baseband power management units.
For engineers reviewing the LP8727TME-B/NOPB datasheet, LP8727TME-B/NOPB pinout, LP8727TME-B/NOPB application, or LP8727TME-B/NOPB equivalent, key selection considerations include its 25-bump 0.4 mm pitch thin DSBGA package, I²C-programmable switch routing (D+/D−/U1/U2/AUD1/AUD2), thermal-regulated 400 mA charging, and integrated SEND/END & microphone removal detection logic.
Technical Context
The LP8727TME-B/NOPB integrates three functional domains: a 28 V OVP single-input linear charger with thermal regulation and programmable full-rate current (90–1000 mA); a reconfigurable analog switch matrix supporting high-speed USB 2.0, UART, stereo audio, and MIC paths with charge-pump-assisted negative rail capability (−2.0 V); and dual LDOs - one for ID/MIC bias (2.3 V/2.6 V, 1 mA) and one for USB transceiver/PMU wakeup (4.85 V, 50 mA).
Switch control is fully I²C-managed with register-mapped routing (e.g., DM1/DP2 bits select D−/D+ path), while detection logic (VBUS, ID, SEND/END, MIC removal) generates interrupt-driven status updates. Default switch state is determined by DSS pin (300 kΩ internal pulldown), and low-power modes (MIC_LP, CP_EN, ADC_EN) are software-configurable to reduce quiescent current to ≤20 µA on VBAT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charger Input OVP | +28 V absolute max; protects PMU from transient surges without external clamping circuitry |
| EXPDET LDO Output | 4.85 V ±3%, 50 mA - powers USB transceivers or wakes PMU upon VBUS connection |
| Analog Switch On-Resistance | ≤3.6 Ω (audio), ≤6 Ω (USB/UART) - ensures minimal signal attenuation in portable audio paths |
| Charge Pump Voltage Range | −2.0 V to +3.6 V - enables true bipolar audio input handling without external rails |
| I²C Slave Address | 0x27 (7-bit) - allows multi-device bus sharing with standard TI-compatible timing |
| Operating Junction Temp | −40°C to +125°C - qualified for smartphone baseband thermal environments |
| Quiescent Current (VBAT STBY) | ≤20 µA - extends battery life during system suspend with ID/MIC detection active |
Pinout & Package
LP8727TME-B/NOPB uses a 25-bump, 0.4 mm pitch thin DSBGA package (2.015 mm × 2.015 mm), optimized for space-constrained mobile phone front-end modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AUD1 (B1) | Stereo audio left input | Analog input pin supporting −2.0 V to +3.6 V range when charge pump enabled |
| DSS (D3) | Default switch select input | Logic level sets initial USB/UART mux state at power-up; internal 300 kΩ pulldown |
| EXPDET (B5) | Overvoltage-protected LDO output | Delivers regulated 4.85 V @ 50 mA for USB PHY or PMU wake-up; requires 1 µF decoupling |
| INT\ (B2) | Open-drain interrupt output | Active-low signal flags VBUS detect, ID change, SEND/END press, or MIC removal |
| RES (D1) | Microphone bias reference | Provides bias voltage through external 2.2 kΩ resistor to ID pin for headset detection |
| VBAT (C5, D5) | Main battery supply input | Accepts 2.5–5.5 V; powers internal circuitry and requires 10 µF capacitor if no battery present |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 28 V OVP charger | Eliminates need for external TVS or crowbar protection on VBUS input |
| Charge-pump-enabled audio switches | Supports true negative-voltage audio signals (e.g., electret MIC biasing) without auxiliary supplies |
| I²C-configurable switch routing | Enables dynamic path selection between USB, UART, and stereo audio based on accessory detection |
| Dual independent LDOs | Separate 2.3/2.6 V ID-detection LDO and 4.85 V EXPDET LDO prevent cross-talk in mixed-signal systems |
| SEND/END & MIC removal detection | Dedicated comparators monitor ID pin voltage shifts to trigger interrupts without host CPU polling |
Applications
| Smartphone Baseband Interface | USB-C Accessory Detection |
|---|---|
Use Scenario: Managing connectivity between micro-USB port and baseband processor in GSM/WCDMA handsets. IC Role / Device Role / Timing Role: Central interface hub handling USB data routing, UART debug path, audio codec switching, and charger status reporting. Use Value: Reduces BOM count by integrating charger, LDOs, and analog switches into one 2.0 mm² package with I²C-controlled flexibility. |
Use Scenario: Detecting headset insertion, SEND/END button press, and microphone removal in portable media players. IC Role / Device Role / Timing Role: Analog front-end supervisor providing interrupt-driven accessory state changes via ID pin voltage monitoring. Use Value: Enables zero-latency accessory event response using internal 200 kΩ/2.2 kΩ/620 Ω pullup network and comparator thresholds. |
| Li-ion Charging Management | USB Transceiver Power Sequencing |
Use Scenario: Delivering thermally regulated 400 mA charging from USB VBUS or wall adapter in compact handheld devices. IC Role / Device Role / Timing Role: Single-input linear charger with programmable termination voltage (4.2 V), pre-charge (80 mA), and safety timer (45 min). Use Value: Achieves >90% charge efficiency at ambient temperatures up to 125°C junction via thermal foldback without external sensors. |
Use Scenario: Powering and enabling USB 2.0 transceivers only when VBUS is valid in battery-powered systems. IC Role / Device Role / Timing Role: EXPDET LDO acts as controlled power rail with UVLO (3.5 V) and OVP (7.2 V) protection. Use Value: Prevents transceiver latch-up during hot-plug events and ensures clean power-on reset sequencing for USB PHYs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB interface and charging applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24072RGTR | Standalone 500 mA USB charger only; no analog switches, LDOs, or accessory detection | Requires external multiplexer and detection circuitry for headset/USB routing | Choose when charging is primary function and system already implements accessory detection separately |
| TPS65921BZCH | Full PMIC with multiple buck/boost rails, but no integrated USB analog switches or SEND/END detection | Lacks dedicated microphone bias, ID detection LDO, and interrupt-driven accessory sensing | Prefer for complex SoC power sequencing where LP8727TME-B/NOPB's focused interface functions are redundant |
Compared with BQ24072RGTR and TPS65921BZCH, LP8727TME-B/NOPB uniquely combines USB/UART/audio switching, 28 V OVP charging, and intelligent accessory detection in a single 2.0 mm² package-enabling smaller footprint and lower software overhead in smartphone front-end designs.
Availability
LP8727TME-B/NOPB is available at Aetrix Electronics and suitable for smartphone baseband interface, USB accessory detection, and Li-ion charging management requiring stable component supply across high-volume consumer electronics production.
Supply support for LP8727TME-B/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 leader delivering analog and embedded processing solutions, with deep expertise in power management and interface ICs for mobile and portable systems.
LP8727TME-B/NOPB belongs to TI's portable power interface product line, designed specifically to consolidate USB connectivity, battery charging, and accessory detection functions in space- and power-constrained handheld devices.
FAQ
What is the maximum input voltage tolerance for LP8727TME-B/NOPB's VBUS pin?
The LP8727TME-B/NOPB features +28 V absolute maximum rating on the VBUS pin, with an integrated overvoltage protection (OVP) circuit that disables the charger input above 6.9 V (typical threshold). This eliminates the need for external TVS diodes in standard USB charging applications, and the device remains functional under transient surges up to 28 V without damage. The OVP hysteresis is 170 mV, ensuring stable recovery after overvoltage events.
How does LP8727TME-B/NOPB handle microphone removal and SEND/END button detection?
LP8727TME-B/NOPB monitors the ID pin voltage using two internal comparators: one set to 90% of the RES bias voltage for microphone removal detection, and another set to 10% for SEND/END button press detection. When either event occurs, it asserts the INT\ pin and updates corresponding bits in INT_STAT1 register. The RES pin provides bias through an external 2.2 kΩ resistor, and detection operates independently of USB enumeration, enabling immediate host response without polling.
Can LP8727TME-B/NOPB support negative-voltage audio signals without external components?
Yes - LP8727TME-B/NOPB integrates a charge pump that generates a negative rail (−2.0 V typ.) when CP_EN = 1, enabling AUD1 and AUD2 inputs to accept signals from −2.0 V to +3.6 V. This allows direct interfacing with electret microphones and stereo audio codecs requiring true bipolar input swing, eliminating the need for external op-amps or dual-supply rails. The charge pump startup time is 1 ms, and flatness is maintained within ±0.5 Ω across the signal range.
What is the role of the DSS pin on LP8727TME-B/NOPB, and how is it used at startup?
The DSS pin on LP8727TME-B/NOPB determines default analog switch configuration at power-up: logic low (GND or floating) selects USB path (D+/D− → DP/DN), while logic high (pulled to VBAT via 300 kΩ) selects UART path (D+/D− → U2/U1). Its state is latched on the first rising edge of SCL, making it critical for I²C initialization sequence. Internal 300 kΩ pulldown ensures safe USB-default behavior if left unconnected, simplifying layout in cost-sensitive designs.
Does LP8727TME-B/NOPB support USB Battery Charging Specification Rev. 1.1?
Yes - LP8727TME-B/NOPB is explicitly designed to comply with USB Charging Specification Rev. 1.1. It detects downstream port types (standard USB host, charging downstream port, dedicated charger) via VBUS voltage profiling and reports results in STATUS1 register (CHPORT and DCPORT bits). The device supports high-current mode for production test and includes VBUS OK trip point (250 mV hysteresis) and programmable full-rate charging current (90–1000 mA), meeting all mandatory detection and power delivery requirements of the spec.
LP8727TME-B/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- MP3 Players, Portable Media Players
- Interface:
- Micro-USB
- Voltage - Supply:
- -
- Supplier Device Package:
- 25-DSBGA
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
LP8727TME-B/NOPB FAQ
1.How can I place an order for LP8727TME-B/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8727TME-B/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 LP8727TME-B/NOPB reliable?
The price and inventory of LP8727TME-B/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8727TME-B/NOPB is usually 5 days.
3.What payment methods are accepted for LP8727TME-B/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8727TME-B/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8727TME-B/NOPB?
LP8727TME-B/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8727TME-B/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 LP8727TME-B/NOPB?
For technical support, including LP8727TME-B/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8727TME-B/NOPB requirements.
6.How does Aetrix verify that LP8727TME-B/NOPB is sourced from the original manufacturer or authorized distributors?
All LP8727TME-B/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 LP8727TME-B/NOPB meets industry standards.
7.What is the process for return or replacement of LP8727TME-B/NOPB?
All LP8727TME-B/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP8727TME-B/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 LP8727TME-B/NOPB part is unused and in its original packaging.
Return procedure for LP8727TME-B/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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