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Texas Instruments LM3354MM-3.7/NOPB
- Part No.:
- LM3354MM-3.7/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3354MM-3.7/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 3.7V 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,386
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Product details
Overview
LM3354MM-3.7/NOPB from Texas Instruments is a regulated 90mA buck-boost switched capacitor DC/DC converter delivering a precise 3.7V output (±3% accuracy) from 2.5V–5.5V input, operating at 1 MHz with 375 µA typical quiescent current and housed in a 10-pin VSSOP package. It enables compact, low-noise power for single-cell Li-ion portable systems requiring stable mid-rail voltage.
For engineers reviewing the LM3354MM-3.7/NOPB datasheet, LM3354MM-3.7/NOPB pinout, LM3354MM-3.7/NOPB application, or LM3354MM-3.7/NOPB equivalent, this page provides verified technical context, pin-level design meaning, real-world application constraints, and validated alternative options for battery-powered handheld electronics.
Technical Context
The LM3354MM-3.7/NOPB implements a proprietary dual-loop digital control architecture: one analog comparator loop gates switching to maintain regulation, while a second digital control block dynamically selects among five gain configurations to maximize efficiency across input and load variations. This enables seamless buck-boost operation without external inductors.
It uses two 0.33 µF ceramic flying capacitors (C1/C2), a 1 µF X7R filter capacitor on CFIL, and supports up to 90 mA output with over-temperature protection. Its 1.1 mm max height VSSOP-10 package targets ultra-thin portable designs where board area and profile are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.7 V ±3% - tightly regulated mid-rail supply ideal for 3.7V nominal Li-ion systems and white LED biasing. |
| Input Voltage Range | 2.5 V to 5.5 V - supports full discharge curve of single-cell Li-ion (3.0–4.2 V), NiMH, or alkaline sources. |
| Max Output Current | 90 mA - sufficient for backlight drivers, small displays, and low-power microcontrollers without inductor-based solutions. |
| Switching Frequency | 1 MHz typical - enables use of small 0.33 µF ceramic flying caps and minimizes EMI in noise-sensitive RF sections. |
| Quiescent Current | 375 µA typical - extends battery life in always-on or low-duty-cycle portable devices. |
| Shutdown Current | 2.3 µA typical - ensures minimal drain during system sleep modes. |
| Efficiency | >75% at 15 mA, >70% at 70 mA - delivers high conversion efficiency across wide load range without magnetic components. |
Pinout & Package
VSSOP-10 package (Package Number DGS0010A), 3.0 mm × 3.0 mm footprint, 1.1 mm max height - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.5–5.5 V; requires local 10 µF input capacitor to suppress ripple and support peak charge transfer. |
| C1− / C1+ | Flying capacitor terminals (pair) | Connects 0.33 µF X7R ceramic flying cap; polarity defines charge pump phase sequence and direction. |
| GND (Pins 4 & 5) | Power ground reference | Dual GND pins reduce ground impedance and improve stability; must be tied to common low-impedance ground plane. |
| CFIL | Internal regulator filter node | Requires 1 µF X7R ceramic cap to stabilize internal bias rail; critical for startup reliability and noise immunity. |
| SD | Active-low shutdown control | Pulling low disables switching and reduces current to 2.3 µA; PWM-compatible for LED brightness control. |
| VOUT | Regulated output voltage | Delivers 3.7 V ±3%; requires 10 µF output capacitor (ceramic/polymer/tantalum) to limit ripple to ≤75 mVP-P at 50 mA. |
| C2− / C2+ | Second flying capacitor terminals | Completes charge transfer path; identical layout and component requirements as C1 pair. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless buck-boost topology | Eliminates magnetic components, reducing BOM cost, board area, and EMI risk in compact handheld layouts. |
| Dual-loop digital regulation | Combines analog feedback for fast transient response with digital gain selection to sustain >70% efficiency from 15–90 mA loads. |
| Low-profile VSSOP-10 package | 1.1 mm max height enables integration into sub-5 mm thick devices such as PDAs, barcode scanners, and medical pens. |
| Integrated thermal protection | Automatically disables charge pump if junction temperature exceeds safe threshold, preventing damage during short-circuit or overload. |
| Shutdown-controlled LED dimming | Enables direct PWM brightness control via SD pin (60–200 Hz), avoiding external FETs or driver ICs in display backlight circuits. |
Applications
| White LED Display Backlights | 1-Cell Li-ion Portable Instruments |
|---|---|
Use Scenario: Powering 2–4串联 white LEDs in handheld medical meters or industrial handheld scanners. IC Role / Device Role / Timing Role: Regulated 3.7V mid-rail source enabling constant-current LED drive with minimal external components. Use Value: Eliminates need for boost-only or LDO post-regulation; achieves <75 mVP-P ripple at 50 mA using 10 µF ceramic COUT. |
Use Scenario: Supplying logic rails for microcontrollers and sensors in battery-operated handheld test equipment. IC Role / Device Role / Timing Role: Primary DC/DC regulator converting declining Li-ion voltage (4.2→3.0 V) to stable 3.7V system rail. Use Value: Maintains regulation across full battery discharge while drawing only 375 µA quiescent current-extending runtime by >15% vs. linear regulators. |
| Flat Panel Display Bias | Low-Noise Portable Audio Devices |
Use Scenario: Generating clean 3.7V supply for TFT LCD source/drain driver ICs in compact diagnostic displays. IC Role / Device Role / Timing Role: Low-ripple, inductorless power stage minimizing conducted noise into sensitive analog pixel drivers. Use Value: Achieves <75 mVP-P output ripple at 50 mA with proper COUT selection-reducing display flicker and ghosting artifacts. |
Use Scenario: Powering audio codecs and Class-D amplifiers in Bluetooth headsets or portable DACs. IC Role / Device Role / Timing Role: Noise-isolated mid-rail supply decoupled from noisy digital subsystems via CFIL filtering and layout best practices. Use Value: Enables 1 MHz switching without audible beat frequencies; CFIL + X7R ceramic filtering suppresses supply-induced THD+N degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated buck-boost switched-capacitor DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3352MM-3.7/NOPB | Higher 200 mA output capability; same 3.7V output, VSSOP-10 package, and 1 MHz switching frequency. | Supports heavier loads (e.g., larger displays, multi-sensor nodes); requires larger flying caps (0.47 µF) and higher COUT (22 µF). | Select when >90 mA load current or higher transient headroom is required; pinout and control interface are identical. |
| LM3355MM-3.7/NOPB | Lower 50 mA output rating; shares same 3.7V output, VSSOP-10 package, and dual-loop architecture but optimized for lower IQ (250 µA). | Better suited for ultra-low-power sensor nodes or RTC backup supplies where 50 mA suffices and quiescent current is critical. | Choose when system load never exceeds 50 mA and 125 µA lower quiescent current justifies reduced output capability. |
Compared with LM3354MM-3.7/NOPB, LM3352MM-3.7/NOPB offers +110 mA extra output headroom at identical pinout and control logic, while LM3355MM-3.7/NOPB trades 40 mA capacity for 125 µA lower operating current-enabling differentiated selection based on load envelope and battery life priorities.
Availability
LM3354MM-3.7/NOPB is available at Aetrix Electronics and suitable for white LED backlights, handheld instrumentation, flat panel displays, and low-noise portable audio devices requiring stable component supply and long-term sourcing continuity.
Supply support for LM3354MM-3.7/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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC/DC conversion.
The LM3354MM-3.7/NOPB belongs to TI's switched-capacitor DC/DC converter product line, designed specifically to replace inductor-based regulators in space- and noise-constrained portable electronics where compact size and low EMI are critical.
FAQ
What is the exact output voltage tolerance of the LM3354MM-3.7/NOPB?
The LM3354MM-3.7/NOPB delivers a nominal 3.7 V output with ±3% accuracy across its full operating temperature range (−40°C to +85°C) and input voltage range (2.5 V to 5.5 V), as confirmed in the Electrical Characteristics table of the SNVS211B datasheet under conditions of 1–90 mA load current.
Can the LM3354MM-3.7/NOPB start up reliably under full 90 mA load?
No-the LM3354MM-3.7/NOPB is guaranteed to start up correctly only under ≤60 mA initial load. If full 90 mA load is present at power-on, a Power-On Reset circuit (e.g., LP3470) is recommended to delay load engagement until regulation is established, per the Applications Information section.
Which capacitor dielectric is mandatory for the CFIL pin on the LM3354MM-3.7/NOPB?
A 1 µF X7R ceramic capacitor is explicitly required on the CFIL pin of the LM3354MM-3.7/NOPB, as stated in the Applications Information section. X7R ensures stable capacitance across temperature and sufficient voltage rating for internal rail filtering-other dielectrics (e.g., Y5V or Z5U) are not recommended.
Does the LM3354MM-3.7/NOPB support PWM dimming of LEDs?
Yes-the LM3354MM-3.7/NOPB supports direct PWM dimming via its active-low SD pin. Applying a 60–200 Hz square wave enables linear LED brightness control, with equivalent current approximating IMAX × duty cycle, as documented in the Driving Light Emitting Diodes section.
Is thermal protection integrated into the LM3354MM-3.7/NOPB?
Yes-the LM3354MM-3.7/NOPB includes on-chip thermal protection that disables the charge pump when junction temperature exceeds the trip point, then re-enables operation once temperature falls to a safe level. This behavior is detailed in the Thermal Protection subsection of the Applications Information.
LM3354MM-3.7/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.7V
- Voltage - Output (Max):
- -
- Current - Output:
- 90mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
LM3354MM-3.7/NOPB FAQ
1.How can I place an order for LM3354MM-3.7/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3354MM-3.7/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 LM3354MM-3.7/NOPB reliable?
The price and inventory of LM3354MM-3.7/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3354MM-3.7/NOPB is usually 5 days.
3.What payment methods are accepted for LM3354MM-3.7/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3354MM-3.7/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3354MM-3.7/NOPB?
LM3354MM-3.7/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3354MM-3.7/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 LM3354MM-3.7/NOPB?
For technical support, including LM3354MM-3.7/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3354MM-3.7/NOPB requirements.
6.How does Aetrix verify that LM3354MM-3.7/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3354MM-3.7/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 LM3354MM-3.7/NOPB meets industry standards.
7.What is the process for return or replacement of LM3354MM-3.7/NOPB?
All LM3354MM-3.7/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3354MM-3.7/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 LM3354MM-3.7/NOPB part is unused and in its original packaging.
Return procedure for LM3354MM-3.7/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3354MM-3.7/NOPB Tags
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