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Texas Instruments LM2612BBL
- Part No.:
- LM2612BBL
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFBGA
- Datasheet:
-
LM2612BBL.pdf
- Description:
- IC REG BUCK PROG 300MA 10DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,625
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Product details
Overview
LM2612BBL from Texas Instruments is a 400mA, pin-programmable step-down DC-DC converter in a 10-pin DSBGA package, operating from 2.8V to 5.5V input and delivering selectable output voltages of 1.05V, 1.3V, 1.5V or 1.8V with ±2% DC precision in PWM mode. It integrates synchronous rectification, soft-start, current overload protection, and thermal shutdown - designed specifically for ultra-low-voltage MPU/DSP power in space-constrained mobile phones and handheld radios.
For engineers reviewing the LM2612BBL datasheet, LM2612BBL pinout, LM2612BBL application, or LM2612BBL equivalent, key selection considerations include its B-grade 400mA load capability, dual-mode (PWM/PFM) operation with 600kHz fixed-frequency PWM and 160µA PFM quiescent current, SYNC/MODE-controlled frequency synchronization (500kHz–1MHz), and VID0/VID1-based resistorless output voltage configuration.
Technical Context
The LM2612BBL implements a current-mode synchronous buck architecture with internal PFET/NFET switches, enabling high-efficiency regulation without external compensation. Its PWM mode uses slope-compensated current sensing and a 600kHz oscillator (±25% over temperature), while PFM mode employs hysteretic control with 25mV FB hysteresis for low-noise light-load operation.
Pin-selectable VID0/VID1 inputs configure the feedback DAC ratio to set one of four output voltages; the SYNC/MODE pin serves triple duty - selecting PWM mode (high), PFM mode (low), or external clock synchronization (500kHz–1MHz square wave). EN enables/disables the device with 0.02µA shutdown current, and internal soft-start prevents inrush during turn-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 5.5V - supports direct operation from single Li-ion cell without pre-regulation. |
| Output Voltage Options | 1.05V / 1.3V / 1.5V / 1.8V - selected via VID0/VID1 logic levels; eliminates external feedback resistors. |
| Max Output Current | 400mA - B-grade rating; sufficient for low-power MPUs and DSPs in portable devices. |
| PWM Mode Efficiency | 91% typ. at 1.8VOUT/100mA - enabled by internal synchronous rectification reducing conduction loss. |
| PWM Quiescent Current | 605µA typ. - enables stable full-load operation while minimizing bias consumption. |
| PFM Quiescent Current | 160µA typ. - extends battery life during system standby by dynamically reducing switching activity. |
| Shutdown Current | 0.02µA typ. - near-zero battery drain when disabled via EN pin. |
| Switching Frequency | 600kHz (PWM, internal); 500kHz–1MHz (SYNC-synchronized) - avoids RF interference in cellular bands. |
Pinout & Package
LM2612BBL is housed in a 10-pin Wafer-Level Chip-Scale DSBGA package (1.5mm × 1.5mm, 0.5mm pitch), optimized for minimal PCB footprint in mobile applications. Only three external components required: 10µH inductor and two ceramic capacitors (10µF and 22µF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback Analog Input | Connects to output filter capacitor; sets regulation point via internal DAC; ±2% precision at 1.5V setting. |
| VID1, VID0 | Digital Output Voltage Select Inputs | Logic-level inputs determining VOUT: 00=1.5V, 01=1.8V, 10=1.3V, 11=1.05V; default 1.5V if unconnected. |
| SYNC/MODE | Mode Control & Sync Input | High = 600kHz PWM; Low = PFM; 500kHz–1MHz external clock = synchronized PWM - enables noise-aware system timing. |
| EN | Enable Input | Active-high enable; drives device into 0.02µA shutdown when pulled low to SGND - supports system-level power sequencing. |
| PGND | Power Ground | Return path for high-current switch node (SW) and PVIN; must be separated from analog ground (SGND) for noise immunity. |
| SW | Switching Node | Connection to internal PFET drain and NFET source; carries high di/dt; requires tight layout to minimize EMI. |
| PVIN | Power Input to PFET | Supplies gate drive and high-side switch; connects to input bulk capacitor - decouples switching transients from VDD. |
| VDD | Analog Supply Input | Bias supply for control circuitry; optional 0.1µF bypass recommended if board layout compromises noise isolation. |
| SGND | Analog & Control Ground | Reference for FB, VID, EN, SYNC/MODE; must be connected to PGND at single point near device for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-miniature DSBGA package | 10-pin, 1.5mm × 1.5mm wafer-level chip-scale封装 - reduces board area by >70% vs. QFN alternatives. |
| Internal synchronous rectification | Integrated NFET replaces external Schottky diode - improves efficiency by ~12% at 100mA/1.8V vs. diode-based buck. |
| No external compensation required | Stable with ceramic output capacitors only - eliminates tuning effort and saves 2–3 passive components. |
| Pin-programmable output voltage | Four discrete VOUT options set via VID0/VID1 - enables single-BOM support for multiple MPU core voltages. |
| Triple-mode operation (PWM/PFM/SYNC) | Adapts to system load and noise constraints: high-efficiency PWM for active mode, low-IQ PFM for standby, synchronized PWM for EMI control. |
Applications
| Mobile Phone Core Power | Hand-Held Radio DSP Supply |
|---|---|
|
Use Scenario: Powers ARM9 or similar low-voltage MPU core in GSM/3G handset during call processing and data transmission. IC Role / Device Role / Timing Role: Primary step-down regulator delivering 1.3V or 1.5V at up to 400mA; operates in PWM mode during active bursts, switches to PFM during idle intervals. Use Value: Enables 91% efficiency at full load and 160µA quiescent current in standby - directly extending talk time per charge cycle. |
Use Scenario: Supplies 1.8V to baseband DSP in narrowband PMR radio during voice encoding/decoding and channel scanning. IC Role / Device Role / Timing Role: Fixed-output DC-DC converter with SYNC input synchronized to 625kHz IF clock to suppress intermodulation noise. Use Value: Eliminates switching ripple coupling into sensitive analog receive path - maintains >45dB SNR in 12.5kHz channel spacing. |
| Battery-Powered IoT Sensor Node | Ultra-Compact Wearable MCU Supply |
|
Use Scenario: Provides 1.05V to ultra-low-power Cortex-M0+ MCU and BLE radio in coin-cell-powered environmental sensor. IC Role / Device Role / Timing Role: Configured for lowest VOUT option (VID0=VID1=HIGH); operates in PFM mode >95% of time; enabled only during measurement bursts. Use Value: Achieves sub-200nA average system supply current in sleep - enabling >2-year battery life on CR2032. |
Use Scenario: Delivers 1.5V to motion-sensing SoC in wrist-worn fitness tracker with strict 3.5mm × 3.5mm PCB height limit. IC Role / Device Role / Timing Role: Mounted directly beneath SoC using DSBGA's bottom-soldered pads; no external inductors or caps beyond required 10µF/22µF ceramics. Use Value: Reduces total power stage footprint to <25mm² - meets mechanical envelope while maintaining 85% efficiency at 50mA load. |
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 fixed-frequency PWM, 600mA output, 2.05V–6.0V input, integrated compensation - higher switching frequency enables smaller inductor but higher EMI risk. | Preferred for space-constrained designs needing <1µH inductor; less suitable for RF-sensitive applications due to lack of PFM mode. | Select TPS62231DRVR when board area is more critical than RF noise margin and load exceeds 400mA. |
| TPS62260DRVR | 2.25V–6.5V input, 600mA output, 2.25MHz PWM + PFM modes, 17µA quiescent current - lower IQ than LM2612BBL but no SYNC input for frequency locking. | Better suited for always-on sensor nodes requiring ultra-low standby current; lacks synchronization capability needed in multi-IC timing-critical systems. | Choose TPS62260DRVR for longest battery life in intermittent wake-up applications where EMI coordination is not required. |
Compared with TPS62231DRVR and TPS62260DRVR, the LM2612BBL uniquely combines pin-selectable VOUT, 600kHz PWM with SYNC synchronization, and proven RF-noise resilience in mobile handsets - making it optimal for legacy or cost-sensitive designs where footprint and EMI control outweigh raw efficiency or IQ metrics.
Availability
LM2612BBL is available at Aetrix Electronics and suitable for mobile phone core power, handheld radio DSP supply, battery-powered IoT sensor nodes, ultra-compact wearable MCU supply, and other applications requiring stable component supply with long lifecycle visibility.
Supply support for LM2612BBL 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 LM2612BBL belongs to TI's sub-miniature DC-DC converter product line, engineered specifically for ultra-low-voltage MPU/DSP power in space- and noise-constrained portable electronics such as mobile phones and handheld radios.
FAQ
What is the maximum supported load current for the LM2612BBL?
The LM2612BBL is rated for 400mA maximum output current under typical conditions, as specified for the B-grade variant in the official SNVS193D datasheet. This rating applies across the full input range (2.8V–5.5V) and all four programmable output voltages (1.05V–1.8V), with derating required above 85°C ambient per thermal resistance (θJA = 140°C/W).
How does the LM2612BBL select its output voltage?
The LM2612BBL selects output voltage via logic states on VID0 and VID1 pins: VID0=LOW/VID1=LOW → 1.5V; VID0=HIGH/VID1=LOW → 1.8V; VID0=LOW/VID1=HIGH → 1.3V; VID0=HIGH/VID1=HIGH → 1.05V. These pins interface directly with GPIOs or pull-up/down resistors - no external feedback network is needed, simplifying layout and BOM.
Can the LM2612BBL synchronize its switching frequency to an external clock?
Yes, the LM2612BBL supports external frequency synchronization via the SYNC/MODE pin. When driven with a clean 500kHz–1MHz square wave (0.4V–1.3V logic swing), the device locks its PWM switching to the rising edge of that clock - enabling EMI reduction in systems with multiple switching regulators or sensitive RF sections.
What is the shutdown current of the LM2612BBL and how is it controlled?
The LM2612BBL achieves 0.02µA typical shutdown current when the EN pin is pulled low to SGND. This state disables all internal circuitry including the reference, error amplifier, gate drivers, and oscillators - ensuring negligible battery drain during system sleep or power-off. The EN pin threshold is 0.95V (rising) and 0.4V (falling), compatible with standard CMOS logic.
Does the LM2612BBL require external compensation components?
No, the LM2612BBL does not require external compensation components. Its current-mode control architecture and internal compensation network are optimized for stability with standard 10µF and 22µF ceramic output capacitors - eliminating the need for external RC networks, saving board space and design validation effort.
LM2612BBL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFBGA
- 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:
- 300mA
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -25°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DSBGA
LM2612BBL FAQ
1.How can I place an order for LM2612BBL through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2612BBL 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 LM2612BBL reliable?
The price and inventory of LM2612BBL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2612BBL is usually 5 days.
3.What payment methods are accepted for LM2612BBL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2612BBL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2612BBL?
LM2612BBL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2612BBL 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 LM2612BBL?
For technical support, including LM2612BBL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2612BBL requirements.
6.How does Aetrix verify that LM2612BBL is sourced from the original manufacturer or authorized distributors?
All LM2612BBL 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 LM2612BBL meets industry standards.
7.What is the process for return or replacement of LM2612BBL?
All LM2612BBL units undergo pre-shipment inspection (PSI). If there is an issue with LM2612BBL, 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 LM2612BBL part is unused and in its original packaging.
Return procedure for LM2612BBL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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