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Texas Instruments LP5990TMX-1.8/NOPB
- Part No.:
- LP5990TMX-1.8/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 4-WFBGA, DSBGA
- Datasheet:
-
LP5990TMX-1.8/NOPB.pdf
- Description:
- IC REG LINEAR 1.8V 200MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,315
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Product details
Overview
LP5990TMX-1.8/NOPB from Texas Instruments is a micropower 200mA CMOS low-dropout voltage regulator delivering a fixed 1.8V output with ±1% accuracy over −40°C to +125°C, 160mV dropout at 200mA, 30μA quiescent current (enabled), and 60μVRMS output noise - deployed in battery-powered handheld information appliances and cellular phones.
For engineers reviewing the LP5990TMX-1.8/NOPB datasheet, LP5990TMX-1.8/NOPB pinout, LP5990TMX-1.8/NOPB application, or LP5990TMX-1.8/NOPB equivalent, key selection considerations include ultra-low quiescent current in shutdown (10nA), stability with 0402 1.0µF ceramic capacitors, logic-controlled enable interface, thermal-overload protection, and DSBGA package constraints for space-constrained portable designs.
Technical Context
The LP5990TMX-1.8/NOPB employs a CMOS pass transistor architecture enabling operation from 2.2V to 5.5V input while maintaining regulation down to 160mV headroom at full 200mA load. Its push-pull enable circuitry achieves 500μs shutdown time and 60μs startup time, supporting rapid power-state transitions in portable systems.
Designed for minimal board area, the device requires only 1.0µF ±30% X7R/X5R ceramic capacitors on both input and output, with ESR between 5mΩ and 500mΩ, and remains stable under no-load conditions - eliminating need for minimum load resistors in standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% over −40°C to +125°C junction temperature - ensures stable core/logic rail for low-voltage SoCs and memory interfaces. |
| Max Output Current | 200mA continuous - sufficient for powering RF transceivers, microcontrollers, or sensor subsystems in compact handheld devices. |
| Dropout Voltage | 160mV at 200mA - enables operation from single-cell Li-ion (3.0V min) or dual-cell alkaline (2.4V min) with margin for battery aging. |
| Quiescent Current | 30μA enabled / 10nA disabled - extends battery life in always-on monitoring or sleep-mode applications. |
| Noise Performance | 60μVRMS (10Hz–100kHz) - meets stringent noise requirements for analog sensors, ADC references, and RF front-end biasing. |
| PSRR | 55dB at 10kHz - suppresses switching noise from DC/DC converters sharing the same battery source. |
| Enable Thresholds | VIL ≤0.35V, VIH ≥1.0V - compatible with 1.8V/2.5V/3.3V GPIO without level-shifting. |
Pinout & Package
LP5990TMX-1.8/NOPB uses a 4-bump DSBGA package (YFQ0004CEA), 0.4mm pitch, 866µm × 917µm footprint, lead-free SNAGCU ball finish, MSL Level-1, and operates from −40°C to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 2.2V–5.5V; requires 1.0µF ceramic capacitor within 1cm of pin to minimize input inductance and ensure stability. |
| VOUT | Regulated output | Delivers fixed 1.8V; connects directly to load; requires 1.0µF ceramic capacitor with 5–500mΩ ESR placed within 1cm for loop stability. |
| VEN | Logic-controlled enable | Active-high interface: ≥1.0V enables regulator; ≤0.35V disables output and reduces IQ to 10nA; internal 3MΩ pull-down aids default-off behavior. |
| GND | Power ground reference | Common return path for VIN, VOUT, and VEN; must be low-impedance analog ground plane to prevent noise coupling into regulated output. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower shutdown | 10nA quiescent current in disable state - preserves battery charge during extended idle periods in IoT edge nodes. |
| Ultra-small capacitor support | Stable with 0402-case 1.0µF ceramic capacitors - reduces total solution size to <2.5mm², critical for wearable and hearable form factors. |
| Low-noise linear regulation | 60μVRMS output noise and 55dB PSRR at 10kHz - avoids post-regulation filtering for sensitive analog circuits. |
| Fast transient response | ±50mV load transient deviation (1mA ↔ 200mA in 1μs) - maintains voltage integrity during burst-mode processor activity. |
| Integrated protection | Thermal overload and short-circuit current limiting (600mA typical) - prevents damage during fault conditions without external components. |
Applications
| Cellular Phone Power Management | Handheld Information Appliance |
|---|---|
Use Scenario: Regulating 1.8V I/O or core voltage for baseband processors and display drivers in slim-profile smartphones. IC Role / Device Role / Timing Role: Primary LDO supplying clean, low-noise 1.8V rail with fast enable/disable control synchronized to modem sleep/wake cycles. Use Value: 60μs startup and 500μs shutdown enable precise power gating, reducing average system current by >30% during deep-sleep states. | Use Scenario: Powering touch controller, flash memory, and Bluetooth SoC in portable medical diagnostic devices. IC Role / Device Role / Timing Role: Standby-capable voltage regulator delivering stable 1.8V to mixed-signal peripherals with zero-load stability. Use Value: 10nA shutdown current extends battery runtime beyond 6 months in intermittent-use clinical instruments. |
| Wearable Sensor Hub | Low-Power Industrial Monitor |
Use Scenario: Supplying 1.8V to MEMS accelerometers, gyroscopes, and BLE radio in compact fitness trackers. IC Role / Device Role / Timing Role: Noise-sensitive LDO decoupling analog sensor front-ends from noisy digital domains. Use Value: 60μVRMS noise and 55dB PSRR eliminate need for ferrite beads or additional LC filters, saving PCB area and BOM cost. | Use Scenario: Providing regulated 1.8V to microcontroller I/O banks and RS-485 transceiver logic in battery-backed industrial data loggers. IC Role / Device Role / Timing Role: Micropower LDO with thermal protection operating across −40°C to +85°C ambient range. Use Value: 160mV dropout allows reliable operation down to 1.96V input - sustaining function through end-of-life battery discharge in remote deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, micropower LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F18-DBVR | Fixed 1.8V, 250mA, 25μA IQ (enabled), 50μVRMS noise, SOT-23-5 package | Larger footprint, higher ESR capacitor requirement (≥2.2µF), no DSBGA option | Preferred when board layout permits SOT-23 and lower noise (50μVRMS) is prioritized over ultra-small size. |
| MCP1700T-1802E/TT | Fixed 1.8V, 250mA, 1.6μA IQ (enabled), 100nA shutdown, SOT-23-3 package | Higher dropout (330mV @ 250mA), 100nA shutdown vs. 10nA, no PSRR spec above 1kHz | Selected where ultra-low IQ dominates design priority and higher dropout is acceptable in higher-input-voltage systems. |
Compared with TPL720F18-DBVR and MCP1700T-1802E/TT, LP5990TMX-1.8/NOPB uniquely balances ultra-small DSBGA footprint, 10nA shutdown, 60μVRMS noise, and 160mV dropout - making it optimal for space- and battery-life-constrained portable electronics where all three parameters are simultaneously critical.
Availability
LP5990TMX-1.8/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, handheld information appliances, wearable sensor hubs, and low-power industrial monitors requiring stable component supply with long-term production continuity.
Supply support for LP5990TMX-1.8/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 specializing in analog, embedded processing, and connectivity technologies, with leadership in power management ICs for portable and industrial applications.
The LP5990 series is part of TI's micropower LDO portfolio designed specifically for battery-powered handheld devices requiring ultra-low quiescent current, minimal solution size, and high noise immunity in tight PCB real estate.
FAQ
What is the maximum input voltage rating for LP5990TMX-1.8/NOPB?
The absolute maximum input voltage (VIN) for LP5990TMX-1.8/NOPB is 6.0V. However, the recommended operating input voltage range is 2.2V to 5.5V per the datasheet. Exceeding 5.5V may cause permanent damage or degrade reliability, even if below the 6.0V absolute max limit. The LP5990TMX-1.8/NOPB is optimized for single-cell Li-ion (up to 4.2V) and dual-cell alkaline/nickel-based batteries.
Does LP5990TMX-1.8/NOPB require an external resistor on the enable pin?
No, LP5990TMX-1.8/NOPB does not require an external pull-up or pull-down resistor on the VEN pin. It integrates a 3MΩ internal pull-down resistor to ground, ensuring default-disable behavior when left floating. An external resistor is only needed if precise threshold control or noise immunity beyond the built-in hysteresis is required - which is not typical for standard GPIO-driven enable applications.
Can LP5990TMX-1.8/NOPB operate without any load connected to VOUT?
Yes, LP5990TMX-1.8/NOPB remains stable and in regulation with no external load (0mA). This no-load stability is explicitly confirmed in the datasheet's "NO-LOAD STABILITY" section and is enabled by its CMOS architecture and compensation design - eliminating the need for minimum load resistors in standby or intermittent-use applications.
What ceramic capacitor dielectric types are recommended for LP5990TMX-1.8/NOPB?
X7R and X5R dielectrics are recommended for both input and output capacitors of LP5990TMX-1.8/NOPB. These offer adequate capacitance retention across temperature and DC bias. Y5V and Z5U are discouraged due to excessive capacitance loss (>50%) over temperature and bias - risking instability if nominal 1.0µF drops below the 0.3µF minimum required for loop stability.
Is LP5990TMX-1.8/NOPB compatible with automated optical inspection (AOI) after reflow?
Yes, LP5990TMX-1.8/NOPB's DSBGA package (YFQ0004CEA) is compatible with standard AOI systems when using appropriate lighting and algorithm settings. However, TI Application Note AN-1112 notes that DSBGA devices exhibit light sensitivity - especially to red/infrared wavelengths - so AOI illumination must avoid halogen or IR-rich sources near the device during inspection to prevent temporary parametric shifts or false failures.
LP5990TMX-1.8/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- -
- PSRR:
- 55dB (10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA
LP5990TMX-1.8/NOPB FAQ
1.How can I place an order for LP5990TMX-1.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5990TMX-1.8/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 LP5990TMX-1.8/NOPB reliable?
The price and inventory of LP5990TMX-1.8/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5990TMX-1.8/NOPB is usually 5 days.
3.What payment methods are accepted for LP5990TMX-1.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5990TMX-1.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5990TMX-1.8/NOPB?
LP5990TMX-1.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5990TMX-1.8/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 LP5990TMX-1.8/NOPB?
For technical support, including LP5990TMX-1.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5990TMX-1.8/NOPB requirements.
6.How does Aetrix verify that LP5990TMX-1.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LP5990TMX-1.8/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 LP5990TMX-1.8/NOPB meets industry standards.
7.What is the process for return or replacement of LP5990TMX-1.8/NOPB?
All LP5990TMX-1.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP5990TMX-1.8/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 LP5990TMX-1.8/NOPB part is unused and in its original packaging.
Return procedure for LP5990TMX-1.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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