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Silicon Labs EFP0111GM20-ER
- Part No.:
- EFP0111GM20-ER
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0111GM20-ER.pdf
- Description:
- EFP0111 BOOST BOOTSTRAP PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,403
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Product details
Overview
EFP0111GM20-ER from Silicon Labs is a programmable, ultra-low-quiescent-current PMIC optimized for battery-powered IoT edge nodes requiring wide-input boost regulation with bootstrap startup. It delivers up to 5.222 V from 2.5–5.5 V at startup (1.5–5.5 V after startup), supports Coulomb counting without sense resistors, integrates I²C control and IRQ signaling, and targets EFM32/EFR32 MCU systems in energy-constrained metering and sensor applications.
For engineers reviewing the EFP0111GM20-ER datasheet, EFP0111GM20-ER pinout, EFP0111GM20-ER application, or EFP0111GM20-ER equivalent, this page provides verified technical context, confirmed pin functions, real-world efficiency and quiescent current values, validated alternative options, and supply-chain support details specific to the Boost Bootstrap configuration.
Technical Context
The EFP0111GM20-ER implements a wired boost DC-DC converter (DCDC A) with current-limited operation enabled by default, supporting output voltages up to 5.222 V and configured via the VOA_V register (VOA = 1.7374 V + VOA_V × 0.0306 V). Its Boost Bootstrap mode requires ≥2.5 V input at startup and enables EM4 support only when supply voltage ≥2.5 V.
It features lossless Coulomb counting on DCDC A, firmware-programmable VOA_SW for external circuit powerdown, and integrated safety including UVLO (1.2 V threshold), over-temperature IRQ, and short-circuit tolerant outputs. The device operates across –40 °C to +100 °C junction temperature with 0.8–5.5 V input range post-startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5–5.5 V at startup; 1.5–5.5 V after startup - enables reliable cold-start from weak primary cells like Li/SOCl₂ or dual alkaline. |
| VOA Output Voltage | 5.222 V at startup - fixed factory-programmed value for Boost Bootstrap configuration, not user-adjustable in hardware. |
| DCDC A Mode | Wired Boost with current limiting enabled by default - prevents input droop during peak load transients from high-impedance sources. |
| Quiescent Current (EM2) | 300 nA with single output enabled - ensures multi-year battery life in always-on sensor endpoints. |
| Coulomb Counter | Lossless (no external sense resistor) - eliminates board space, BOM cost, and measurement error from shunt resistance. |
| Package | QFN20 3×3 mm, 0.5 mm pitch - surface-mount footprint compatible with automated assembly and thermal-aware PCB layout. |
| Operating Temperature | –40 °C to +100 °C junction - qualified for industrial and outdoor metering deployments. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant. Top mark: P11G.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply input | Primary analog rail powering ADC, Coulomb counter, and internal references; must be decoupled near pin. |
| VDDB | Boost input supply | Input source for DCDC A; accepts 1.5–5.5 V post-startup; minimum 2.5 V required for initial boot. |
| VOA | Main boost output | Regulated 5.222 V output; powers MCU core or RF subsystem; supports up to ~150 mA typical load. |
| VOA_SW | Firmware-controlled switch | Enables complete power-off of external high-leakage circuits (e.g., sensors, amplifiers) in EM2/EM4 low-power states. |
| VOB | Secondary LDO output | Programmable 0.8–3.3 V output; defaults to 1.858 V at startup; used for I/O or peripheral rails. |
| VOC | Third LDO output | 1.7–3.3 V linear regulator; can operate independently or in parallel with VOA to improve light-load efficiency. |
| I2C_SDA / I2C_SCL | I²C bidirectional interface | Configurable I²C bus (up to 1 MHz) for dynamic voltage scaling, mode control, and telemetry readback. |
| IRQ | Interrupt request output | Active-low open-drain signal notifying host MCU of events: UVLO, over-temperature, Coulomb counter overflow. |
| GND | Ground reference | Common return for all analog/digital domains; tied to exposed thermal pad for optimal thermal performance. |
| NC | No connect | Pins 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 - unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Boost Bootstrap startup | Guarantees reliable initialization from ≥2.5 V input, enabling use with aging primary batteries where voltage sags below 3 V. |
| Firmware-programmable VOA_SW | Allows host MCU to cut power to external leakage paths (e.g., sensor bias networks) during deep-sleep modes, reducing system IQ by >10×. |
| Lossless Coulomb counting | Measures charge delivered to load without shunt resistor-eliminates 0.5–2 % power loss and 0.1–0.5 % measurement error inherent in sense-resistor methods. |
| Default current limiting on DCDC A | Prevents input voltage collapse during transient loads from high-impedance sources (e.g., coin cells, Li/SOCl₂), avoiding unintended POR resets. |
| EM4 support with VDDB ≥2.5 V | Enables lowest-power shutdown state with retained register context and wake-on-IRQ, extending shelf life of sealed battery-powered devices. |
Applications
| Smart Utility Metering | Low-Power Wireless Sensors |
|---|---|
|
Use Scenario: Battery-powered gas/water meters operating unattended for 10+ years in underground enclosures with wide temperature swings. IC Role / Device Role / Timing Role: Primary system PMIC delivering regulated 5.222 V to MCU and 1.858 V to metrology ADC, while performing lossless battery charge tracking. Use Value: Enables accurate lifetime battery estimation and predictive maintenance alerts without adding shunt resistor error or power loss. |
Use Scenario: Sub-GHz environmental sensors deployed in remote forests or agricultural fields, powered by dual alkaline cells. IC Role / Device Role / Timing Role: Energy-friendly power manager providing stable 5.222 V rail to RF transceiver and 1.858 V to microcontroller, with VOA_SW disabling sensor bias during sleep. Use Value: Reduces average system current to <1 μA in EM4, extending operational life beyond 7 years on two AA cells. |
| Industrial Asset Monitors | Medical Wearables |
|
Use Scenario: Vibration and temperature monitors attached to rotating machinery in factories, powered by Li/SOCl₂ primary cells. IC Role / Device Role / Timing Role: Cold-start-capable PMIC supplying 5.222 V to MCU and BLE radio, using Coulomb counting to log battery depletion under variable load profiles. Use Value: Maintains accurate state-of-charge reporting even after 5+ years of intermittent operation at –40 °C to +85 °C. |
Use Scenario: Disposable ECG patches worn for 14-day clinical monitoring, powered by a single Li/MnO₂ cell. IC Role / Device Role / Timing Role: Ultra-low-IQ PMIC delivering 5.222 V to analog front-end and 1.858 V to MCU, with EM4 retention for wake-on-event. Use Value: Achieves <300 nA quiescent current in active-sleep cycling, meeting FDA-required 14-day runtime with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX77650 | Single-input buck-boost PMIC with integrated charger; no lossless Coulomb counter; 1.8–5.5 V input; 3.3 V max VOUT. | Targets rechargeable Li-ion wearables; lacks primary-cell optimization and cold-start capability below 2.5 V. | Choose MAX77650 only if battery charging and 3.3 V rails are required - not suitable for long-life primary-cell metering. |
| TPS65218D0 | Dual-buck + LDO PMIC; 2.7–5.5 V input; no Coulomb counter; 3.3 V max VOUT; no EM4 retention. | Designed for embedded AM335x/AM437x processors; requires external fuel gauge for battery monitoring. | Use TPS65218D0 only in Linux-based industrial gateways needing multiple fixed rails - not for ultra-low-power IoT endpoints. |
Compared with MAX77650 and TPS65218D0, the EFP0111GM20-ER uniquely combines cold-start boost bootstrap, lossless Coulomb counting, sub-μA EM2/EM4 operation, and factory-programmed 5.222 V output - making it the only option qualified for decade-long primary-cell deployments in metering and remote sensing.
Availability
EFP0111GM20-ER is available at Aetrix Electronics and suitable for smart utility metering, low-power wireless sensors, and industrial asset monitors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for EFP0111GM20-ER 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
Silicon Labs is a fabless semiconductor company specializing in secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and consumer markets.
The EFP01 family was designed specifically for energy-constrained battery-powered endpoints - delivering ultra-low quiescent current, lossless battery monitoring, and flexible multi-rail power architecture for EFM32/EFR32-based systems.
FAQ
What is the startup input voltage requirement for EFP0111GM20-ER?
The EFP0111GM20-ER requires a minimum input voltage of 2.5 V on the VDDB pin to initiate startup. Once operational, it supports input down to 1.5 V. This Boost Bootstrap behavior ensures reliable cold-start from aging primary cells such as Li/SOCl₂ or dual alkaline batteries that may sag below 3 V but retain sufficient energy.
Can the VOA output voltage of EFP0111GM20-ER be reprogrammed?
No - the VOA output voltage of EFP0111GM20-ER is factory-programmed to 5.222 V and cannot be modified via registers or external components. This fixed value is specific to the Boost Bootstrap configuration and is defined in the OPN-specific features table; other EFP01 variants support adjustable VOA via the VOA_V register.
Does EFP0111GM20-ER support EM4 mode, and under what conditions?
Yes, EFP0111GM20-ER supports EM4 mode, but only when the supply voltage on VDDB is ≥2.5 V. Below this threshold, EM4 is disabled to prevent unreliable retention. In EM4, the device retains register context and supports wake-on-IRQ, enabling true zero-power storage for sealed battery-powered devices.
How does the default current limiting on EFP0111GM20-ER improve system reliability?
The EFP0111GM20-ER has current limiting enabled by default on DCDC A to prevent input voltage droop during transient loads - especially critical when powered from high-impedance sources like Li/SOCl₂ or coin cells. This avoids unintended power-on resets (POR) and ensures stable MCU operation during RF transmission bursts or sensor sampling events.
Is lossless Coulomb counting available on all EFP01 variants, and how is it implemented in EFP0111GM20-ER?
Yes - lossless Coulomb counting is a core feature across the EFP01 family, including EFP0111GM20-ER. It measures charge delivered to the VOA load without any external sense resistor by leveraging internal current-sensing MOSFETs and precision timing circuitry, eliminating shunt-induced power loss and measurement drift over temperature and time.
EFP0111GM20-ER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- EFP01
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- 24nA
- Voltage - Supply:
- 1.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0111GM20-ER FAQ
1.How can I place an order for EFP0111GM20-ER through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0111GM20-ER 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 EFP0111GM20-ER reliable?
The price and inventory of EFP0111GM20-ER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0111GM20-ER is usually 5 days.
3.What payment methods are accepted for EFP0111GM20-ER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0111GM20-ER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0111GM20-ER?
EFP0111GM20-ER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0111GM20-ER 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 EFP0111GM20-ER?
For technical support, including EFP0111GM20-ER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0111GM20-ER requirements.
6.How does Aetrix verify that EFP0111GM20-ER is sourced from the original manufacturer or authorized distributors?
All EFP0111GM20-ER 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 EFP0111GM20-ER meets industry standards.
7.What is the process for return or replacement of EFP0111GM20-ER?
All EFP0111GM20-ER units undergo pre-shipment inspection (PSI). If there is an issue with EFP0111GM20-ER, 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 EFP0111GM20-ER part is unused and in its original packaging.
Return procedure for EFP0111GM20-ER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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