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Texas Instruments LM2767M5/NOPB
- Part No.:
- LM2767M5/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM2767M5/NOPB.pdf
- Description:
- IC REG CHG PUMP ADJ 15MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,841
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Product details
Overview
LM2767M5/NOPB from Texas Instruments is a CMOS switched-capacitor voltage doubler IC operating from 1.8 V to 5.5 V input, delivering ≥15 mA output current with 96% typical conversion efficiency at 15 mA load and 20 Ω typical output impedance. It functions as a compact, inductorless power supply for op-amp biasing and interface rails in portable electronics.
For engineers reviewing the LM2767M5/NOPB datasheet, LM2767M5/NOPB pinout, LM2767M5/NOPB application, or LM2767M5/NOPB equivalent, key selection criteria include its 11-kHz switching frequency (to avoid audio-band interference), SOT-23-5 package compatibility, low 40 µA quiescent current, and explicit support for voltage-doubling topologies using two external capacitors and one Schottky diode.
Technical Context
The LM2767M5/NOPB implements a four-switch CMOS charge-pump architecture that alternately charges and transfers energy via external flying (C1) and output (C2) capacitors. Its internal oscillator operates at 11 kHz (typical), driving synchronous MOSFET switches with low RDS(on) to minimize conduction loss.
It lacks enable/disable control - operation begins automatically upon application of valid V+ (1.8–5.5 V). Output regulation is unregulated; voltage equals ~2×V+ minus drop across internal switch resistance and capacitor ESR, yielding a design-equivalent Thevenin source of 2V+ in series with 20–40 Ω output impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, NiMH, and 3.3/5 V logic rails without external regulators. |
| Output Current | 15 mA (min) at V+ ≥ 2.5 V - sufficient for biasing dual op-amps or powering RS-232 interface ICs. |
| Conversion Efficiency | 96% (typ) at 15 mA - minimizes battery drain in always-on portable systems. |
| Switching Frequency | 11 kHz (typ) - avoids audible noise and simplifies EMI filtering vs. MHz-range DC-DC converters. |
| Quiescent Current | 40 µA (typ) - enables ultra-low-power standby operation in battery-backed devices. |
| Output Impedance | 20 Ω (typ) at 15 mA - defines voltage droop under load; requires low-ESR capacitors for stable rail generation. |
| Ambient Temp Range | −40°C to +85°C - qualified for industrial and consumer handheld environments. |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, 1.45 mm max height, RoHS-compliant matte tin (SN) lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Power output | Positive voltage output node; delivers ~2×V+; connects to load and output capacitor C2. |
| 2 - GND | Ground reference | Common return path for input, output, and internal circuitry; must be low-inductance connection. |
| 3 - CAP− | Flying capacitor terminal | Negative terminal of external flying capacitor C1; alternately charged/discharged during voltage doubling cycle. |
| 4 - V+ | Input supply | Primary power input (1.8–5.5 V); device powers on automatically when valid voltage applied. |
| 5 - CAP+ | Flying capacitor terminal | Positive terminal of external flying capacitor C1; forms charge-transfer path with CAP− and internal switches. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage doubling topology | Eliminates need for magnetic components - reduces BOM cost and PCB area vs. inductor-based DC-DC. |
| No enable pin required | Automatic operation on V+ application simplifies system power sequencing in space-constrained designs. |
| Low-noise 11-kHz switching | Prevents audible coil whine and eases compliance with audio-sensitive EMC requirements. |
| 40 µA quiescent current | Extends battery life in intermittently active devices such as pagers and PDAs without compromising startup speed. |
| 20 Ω output impedance | Enables predictable voltage droop modeling (ΔV = ILOAD × ROUT) for accurate rail sizing in analog signal chains. |
Applications
| Operational Amplifier Power Supply | Interface Power Supply |
|---|---|
Use Scenario: Providing ±5 V rails for dual-supply op-amps in handheld test equipment using only a single 2.7 V Li-ion cell. IC Role / Device Role / Timing Role: Voltage-doubling charge pump generating clean, low-noise positive rail; no timing-critical interaction with signal path. Use Value: Enables rail-splitting without inductors, reducing board area by >40% versus buck-boost solutions while maintaining <10 mV ripple at 10 mA load. | Use Scenario: Powering RS-232 transceivers in portable medical monitors where 3.3 V MCU supplies require ±12 V interface voltages. IC Role / Device Role / Timing Role: Unregulated positive voltage generator feeding LDO or charge-pump inverter stage; operates asynchronously to host data timing. Use Value: Delivers stable 6.6 V output from 3.3 V input with <2% line regulation, enabling reliable UART communication over extended cable lengths. |
| Cellular Phone Peripheral Bias | Handheld Instrument LCD Backlight Driver |
Use Scenario: Generating 5 V bias for RF front-end modules and camera sensor interfaces in legacy GSM handsets. IC Role / Device Role / Timing Role: Auxiliary power converter supplying constant-current LED drivers and analog front-end ICs; independent of baseband clock domains. Use Value: Achieves 96% efficiency at 12 mA load, extending talk time by 8 minutes per charge cycle compared to linear regulator alternatives. | Use Scenario: Driving white LED backlight strings in portable multimeters and oscilloscope probes using a single 3 V coin cell. IC Role / Device Role / Timing Role: High-efficiency voltage booster feeding constant-current LED driver IC; no PWM synchronization required. Use Value: Maintains >90% efficiency down to 1.8 V input, enabling full brightness operation until battery reaches end-of-life voltage threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-doubling applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Higher 125 kHz switching frequency; 100 mA output capability; requires different capacitor values and layout due to faster switching. | Better suited for higher-current loads but increases EMI filtering complexity and capacitor stress. | Select MAX680ESA+ only when >30 mA output or tighter regulation via external feedback is required. |
| TPS60230RTJR | Integrated LDO post-regulator; fixed 3.3 V output; 250 mA capability; higher quiescent current (120 µA). | Provides regulated output without external LDO, but sacrifices flexibility in output voltage selection. | Choose TPS60230RTJR when stable, noise-sensitive 3.3 V rail is mandatory and board space permits larger SOT-23-8 footprint. |
Compared with MAX680ESA+ and TPS60230RTJR, the LM2767M5/NOPB offers optimal balance of ultra-low quiescent current (40 µA), predictable 20 Ω output impedance, and minimal external component count - making it ideal for cost-sensitive, battery-limited applications where fixed 2×V+ scaling suffices.
Availability
LM2767M5/NOPB is available at Aetrix Electronics and suitable for cellular phones, handheld instruments, and operational amplifier power supplies requiring stable component supply across long production lifecycles.
Supply support for LM2767M5/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 precision power conversion and low-power design.
The LM2767 belongs to TI's switched-capacitor voltage converter product line, engineered specifically for compact, inductorless DC-DC voltage multiplication in portable and battery-powered systems.
FAQ
What is the minimum input voltage required for stable operation of the LM2767M5/NOPB?
The LM2767M5/NOPB operates reliably from 1.8 V to 5.5 V input. At input voltages below 2.5 V, maximum output current drops to 10 mA per datasheet specifications. Below 1.8 V, the device ceases switching and VOUT collapses - so 1.8 V is the absolute functional lower limit for the LM2767M5/NOPB.
Does the LM2767M5/NOPB include an enable pin or shutdown mode?
No, the LM2767M5/NOPB has no enable pin or hardware shutdown function. It begins operation automatically whenever valid V+ (1.8–5.5 V) is applied to pin 4. To disable the LM2767M5/NOPB, the input supply must be physically removed or disconnected - there is no low-power standby state.
Can multiple LM2767M5/NOPB devices be paralleled to increase output current?
Yes, multiple LM2767M5/NOPB units can be safely paralleled to reduce effective output resistance and increase total output current capacity. Each device requires its own flying capacitor (C1), but a single shared output capacitor (C2) suffices. The composite output resistance equals ROUT/N, where N is the number of paralleled LM2767M5/NOPB units.
What external components are mandatory for basic LM2767M5/NOPB operation?
The LM2767M5/NOPB requires three mandatory external components: two 10 µF low-ESR capacitors (C1 flying cap between CAP+ and CAP−, C2 output cap between VOUT and GND) and one Schottky diode (e.g., 1N5817) from V+ to VOUT. Omitting the diode risks parasitic latch-up during startup and increases turn-on time.
Is the LM2767M5/NOPB RoHS compliant and what is its moisture sensitivity level?
Yes, the LM2767M5/NOPB is RoHS compliant (lead-free matte tin finish) and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), per JEDEC J-STD-020. Its SOT-23-5 (DBV) package is qualified for standard reflow profiles up to 260°C peak temperature without baking requirement.
LM2767M5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.6V
- Voltage - Output (Max):
- 11V
- Current - Output:
- 15mA
- Frequency - Switching:
- 11kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM2767M5/NOPB FAQ
1.How can I place an order for LM2767M5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2767M5/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 LM2767M5/NOPB reliable?
The price and inventory of LM2767M5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2767M5/NOPB is usually 5 days.
3.What payment methods are accepted for LM2767M5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2767M5/NOPB transactions.
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4.How is shipping managed for LM2767M5/NOPB?
LM2767M5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2767M5/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 LM2767M5/NOPB?
For technical support, including LM2767M5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2767M5/NOPB requirements.
6.How does Aetrix verify that LM2767M5/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2767M5/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 LM2767M5/NOPB meets industry standards.
7.What is the process for return or replacement of LM2767M5/NOPB?
All LM2767M5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2767M5/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 LM2767M5/NOPB part is unused and in its original packaging.
Return procedure for LM2767M5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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