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Texas Instruments LM2612ABP
- Part No.:
- LM2612ABP
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFBGA
- Datasheet:
-
LM2612ABP.pdf
- Description:
- IC REG BUCK PROG 400MA 10DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,774
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Product details
Overview
LM2612ABP from Texas Instruments is a 10-pin DSBGA sub-miniature step-down DC-DC converter optimized for ultra-low-voltage circuits powered by a single Li-ion cell (2.8V–5.5V input), delivering up to 400mA output with pin-programmable voltages of 1.05V, 1.3V, 1.5V, or 1.8V, and featuring internal synchronous rectification for 91% typical efficiency at 1.8VOUT/2.8VIN in PWM mode - used in mobile phone core voltage regulation.
For engineers reviewing the LM2612ABP datasheet, LM2612ABP pinout, LM2612ABP application, or LM2612ABP equivalent, key selection considerations include its 600kHz PWM switching frequency, ±2% DC output voltage precision (except 1.05V), 150µA typical PFM quiescent current, 0.1µA shutdown current, and dual-mode (PWM/PFM) operation with SYNC/MODE pin control for battery life optimization in portable systems.
Technical Context
The LM2612ABP implements a current-mode buck architecture with cycle-by-cycle current limiting and internal slope compensation for loop stability. It uses a PFET high-side switch and NFET synchronous rectifier controlled by an oscillator-driven flip-flop and PWM comparator in PWM mode, while PFM mode employs a hysteretic error comparator to regulate output voltage by modulating switching frequency rather than pulse width.
Operating modes are selected via the SYNC/MODE pin: high (>1.3V) enables fixed-frequency 600kHz PWM with synchronous rectification; low (<0.4V) activates low-quiescent-current PFM mode without synchronous rectifier drive; and external 500kHz–1MHz clock applied to SYNC/MODE forces synchronized PWM operation. The device lacks UVLO and requires EN pin control during power-up below 2.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 5.5V - supports direct connection to single Li-ion battery without pre-regulation. |
| Max Output Current | 400mA - sufficient for low-power MPU/DSP core rails in handheld devices. |
| Output Voltage Options | 1.05V, 1.3V, 1.5V, or 1.8V - selected digitally via VID0/VID1 pins; eliminates external feedback resistors. |
| PWM Mode Precision | ±2% (except 1.05V at ±3%) - ensures stable core voltage under full load across temperature. |
| Quiescent Current (PFM) | 150µA typical - extends battery life during system standby without compromising regulation. |
| Shutdown Current | 0.1µA typical - minimizes battery drain when device is disabled. |
| Switching Frequency (PWM) | 600kHz nominal (468–732kHz range) - balances EMI control and inductor size for compact designs. |
| Peak Switch Current Limit | 850mA - protects internal PFET/NFET during overload or short-circuit conditions. |
Pinout & Package
The LM2612ABP is housed in a 10-pin wafer-level chip-scale DSBGA package (1.5mm × 1.5mm, 0.5mm pitch), offering minimal PCB footprint for space-constrained applications such as mobile phones.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback Analog Input | Connects directly to output capacitor for closed-loop voltage regulation; sets output based on internal DAC divider ratios. |
| VID0 / VID1 | Digital Output Voltage Select | Binary-coded inputs selecting 1.05V, 1.3V, 1.5V, or 1.8V; default to 1.5V if unconnected. |
| SYNC/MODE | Mode Control & Clock Input | High = 600kHz PWM; low = PFM; external 500kHz–1MHz clock = synchronized PWM - enables dynamic power mode adaptation. |
| EN | CMOS Schmitt Trigger Enable | High = normal operation with soft-start; low = shutdown (0.1µA); must be held low during VIN < 2.8V due to no UVLO. |
| PGND | Power Ground Return | Low-impedance return path for high-current switch node (SW) and inductor current. |
| SW | Switching Node | Connection point between internal PFET drain and NFET source; drives external inductor with peak current up to 850mA. |
| PVIN | Power Supply Input to PFET | Bypassed locally with ceramic capacitor; supplies high-side switch independently from analog VDD rail. |
| VDD | Analog Supply Input | Powers internal reference, error amplifier, and control logic; optional 0.1µF decoupling recommended for noisy layouts. |
| SGND | Analog & Control Ground | Reference for FB, VID, SYNC/MODE, and EN; separated from PGND to minimize noise coupling into regulation loop. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-miniature DSBGA package | 10-pin, 1.5mm × 1.5mm footprint - enables integration into ultra-thin mobile phone PCBs with minimal area penalty. |
| Three external components only | Single 10µH inductor + two ceramic capacitors (10µF, 22µF) - reduces BOM count, layout complexity, and cost. |
| Internal synchronous rectification | Eliminates external Schottky diode; achieves 91% typical efficiency at 1.8VOUT/2.8VIN - critical for thermal management in sealed enclosures. |
| No external compensation required | Internally compensated error amplifier - removes need for external RC network and simplifies design validation. |
| Soft-start and overload protection | Prevents inrush current at startup and limits peak switch current to 850mA - enhances system reliability during fault conditions. |
Applications
| Mobile Phone Core Rail | Hand-Held Radio DSP Supply |
|---|---|
Use Scenario: Powers baseband processor or application CPU core in GSM/UMTS smartphones operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary step-down regulator delivering programmable 1.05V–1.8V core voltage with dynamic mode switching (PWM/PFM) based on processing load. Use Value: Extends talk time via 150µA PFM quiescent current and maintains RF integrity with 600kHz fixed-frequency PWM during active transmission. | Use Scenario: Supplies low-noise 1.5V rail to digital signal processor in portable two-way radios with intermittent transmit/receive duty cycles. IC Role / Device Role / Timing Role: Efficient DC-DC converter enabling rapid transition between high-current TX bursts and ultra-low-power RX/idle states using SYNC/MODE pin control. Use Value: Achieves >90% efficiency at 200mA load while suppressing conducted EMI through synchronous rectification and clean PWM waveform. |
| Battery-Powered IoT Sensor Node | Ultra-Compact Wearable MCU Supply |
Use Scenario: Provides regulated 1.3V supply to ARM Cortex-M0+ microcontroller and BLE radio in coin-cell or small Li-ion powered sensor tags. IC Role / Device Role / Timing Role: Standby-optimized buck converter leveraging PFM mode for sub-200µA system sleep current and PWM for brief data transmission bursts. Use Value: Enables multi-year battery life via 0.1µA shutdown current and eliminates need for discrete feedback network, saving board space. | Use Scenario: Delivers 1.8V core voltage to motion-sensing SoC in wrist-worn fitness trackers where PCB real estate is limited to <100mm². IC Role / Device Role / Timing Role: Space-constrained power solution using 1.5mm × 1.5mm DSBGA package and only three passive components. Use Value: Reduces total solution size by >40% versus QFN alternatives while maintaining ±2% output accuracy across −25°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3MHz switching frequency, 600mA output, 2.05V–6.0V input, integrated compensation - higher frequency allows smaller inductor but higher EMI risk. | Targets newer ultra-thin devices requiring faster transient response; lacks PFM mode - less optimal for long standby duration. | Select TPS62231DRVR when board space permits smaller magnetics and system prioritizes load transient performance over ultra-low quiescent current. |
| TPS62260DRVR | 2.05V–6.0V input, 600mA output, 2.25MHz switching, DCS-Control topology - superior light-load efficiency via automatic PFM/PWM transition. | Designed for always-on connected devices; includes I²C interface for dynamic voltage scaling - adds firmware overhead not needed in fixed-VOUT designs. | Choose TPS62260DRVR when system requires programmable output voltage via digital interface and tighter load regulation across wide current range. |
Compared with TPS62231DRVR and TPS62260DRVR, the LM2612ABP offers lower quiescent current in PFM mode (150µA vs ≥20µA), simpler pin-strapped configuration (no I²C), and proven robustness in legacy mobile platforms - making it preferable for cost-sensitive, space-constrained, battery-life-critical designs with fixed output requirements.
Availability
LM2612ABP is available at Aetrix Electronics and suitable for mobile phones, hand-held radios, and battery-powered IoT sensor nodes requiring stable component supply and long-lifecycle support for legacy portable electronics designs.
Supply support for LM2612ABP 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 and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.
The LM2612ABP belongs to TI's portable power management product line, designed specifically for ultra-low-voltage, space-constrained battery-powered devices such as early-generation smartphones and handheld radios where minimal external components and dual-mode efficiency were critical.
FAQ
What is the maximum output current capability of the LM2612ABP?
The LM2612ABP delivers up to 400mA of continuous output current under typical conditions (VIN = 3.6V, TA = 25°C, L1 = 10 µH). This rating applies to the 'A' grade variant; the 'B' grade (LM2612BBP) is rated for 300mA. Peak switch current is internally limited to 850mA to protect the internal PFET and NFET during overload or short-circuit events, as confirmed in the Electrical Characteristics table of the SNVS143G datasheet.
How does the LM2612ABP select its output voltage?
The LM2612ABP selects output voltage digitally using the VID0 and VID1 pins, which form a 2-bit code: VID0=0/VID1=0 → 1.5V; VID0=1/VID1=0 → 1.3V; VID0=0/VID1=1 → 1.8V; VID0=1/VID1=1 → 1.05V. These pins interface directly with system GPIOs or pull-up/down resistors. If left unconnected, the internal weak pull-downs default the outputs to 1.5V, eliminating the need for external feedback resistors and simplifying layout - a key feature highlighted in the LM2612ABP datasheet's Features section.
What are the operating modes of the LM2612ABP and how are they controlled?
The LM2612ABP supports three operating modes controlled exclusively by the SYNC/MODE pin: high (>1.3V) enables 600kHz PWM mode with synchronous rectification; low (<0.4V) activates low-quiescent-current PFM mode; and an external 500kHz–1MHz clock applied to SYNC/MODE forces synchronized PWM operation. Mode transitions must avoid floating states - TI recommends using a Schmitt trigger or logic gate driver. The LM2612ABP datasheet specifies that improper mode control can cause output voltage errors or OVP activation under light loads.
Does the LM2612ABP include under-voltage lockout (UVLO)?
No, the LM2612ABP does not include internal under-voltage lockout circuitry. As explicitly stated in the datasheet's Absolute Maximum Ratings note and DEVICE INFORMATION section, the device is designed for systems where power sequencing is managed by the host processor. The EN pin must be held low until VIN exceeds 2.8V to prevent undefined behavior; enabling the LM2612ABP below this threshold is not ensured, even though pre-production units showed safe operation. This absence of UVLO is a deliberate design choice to minimize quiescent current and silicon area.
What package type and dimensions does the LM2612ABP use?
The LM2612ABP uses a 10-pin DSBGA (Die Size Ball Grid Array) package measuring 1.5mm × 1.5mm with 0.5mm ball pitch, fabricated using TI's wafer-level chip-scale technology. This package is documented in the Connection Diagrams section of the SNVS143G datasheet and is identical across LM2612ABP and LM2612BBP variants. Its ultra-small footprint and low profile make it suitable for mobile phone mainboards and other space-constrained portable electronics where traditional QFN or SOIC packages are impractical.
LM2612ABP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.05V, 1.3V, 1.5V, 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -25°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DSBGA
LM2612ABP FAQ
1.How can I place an order for LM2612ABP through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2612ABP 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 LM2612ABP reliable?
The price and inventory of LM2612ABP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2612ABP is usually 5 days.
3.What payment methods are accepted for LM2612ABP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2612ABP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2612ABP?
LM2612ABP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2612ABP 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 LM2612ABP?
For technical support, including LM2612ABP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2612ABP requirements.
6.How does Aetrix verify that LM2612ABP is sourced from the original manufacturer or authorized distributors?
All LM2612ABP 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 LM2612ABP meets industry standards.
7.What is the process for return or replacement of LM2612ABP?
All LM2612ABP units undergo pre-shipment inspection (PSI). If there is an issue with LM2612ABP, 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 LM2612ABP part is unused and in its original packaging.
Return procedure for LM2612ABP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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