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Silicon Labs EFP0109GM20-ER
- Part No.:
- EFP0109GM20-ER
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0109GM20-ER.pdf
- Description:
- EFP0109 WIRED BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
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Product details
Overview
EFP0109GM20-ER from Silicon Labs is a highly efficient, firmware-configurable Power Management IC (PMIC) optimized for ultra-low-power battery-powered systems. It delivers three regulated outputs - VOA (boost-mode DC-DC), VOB (buck-mode DC-DC + LDO), and VOC (LDO) - with 3.327 V startup VOA voltage, 0.8–3.3 V programmable VOB range, and integrated Coulomb counting. It supports single lithium iron-disulfide (Li/FeS₂), dual alkaline/zinc-carbon, or Li-ion/LiPo batteries in IoT sensors and wireless metering applications.
For engineers reviewing the EFP0109GM20-ER datasheet, EFP0109GM20-ER pinout, EFP0109GM20-ER application, or EFP0109GM20-ER equivalent, key selection criteria include its wired boost DC-DC A configuration (1.8–3.6 V input), EM2 quiescent current of 300 nA (single output enabled), I²C programmability, and QFN20 3×3 mm package compatibility with EFM32/EFR32 host MCUs.
Technical Context
The EFP0109GM20-ER implements a fixed-wired boost topology for DC-DC A (VOA), eliminating external mode-selection components and enabling deterministic startup at 3.327 V. Its DC-DC B operates exclusively in buck mode with parallel LDO B for improved light-load regulation, while VOC functions as an independent linear regulator or can be paired with VOA for hybrid regulation.
It integrates lossless Coulomb counting without sense resistors, uses a dedicated IRQ pin for energy-mode transitions, and features programmable inrush current limiting, short-circuit tolerant outputs, and UVLO activation below 1.2 V on VDDB. Thermal monitoring and -40 to +100 °C junction operation support industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 3.6 V - matches nominal voltage of dual alkaline/Li/FeS₂ primary cells and LiFePO₄ rechargeables; excludes sub-1.8 V operation. |
| VOA Output Configuration | Wired Boost only - fixed hardware topology; no buck/boost auto-transition; requires external inductor and diode. |
| VOA Startup Voltage | 3.327 V - factory-programmed value; sets initial regulated rail for host MCU core or RF subsystem at power-on. |
| VOB Programmable Range | 0.8 V to 3.3 V - enables flexible supply to low-voltage peripherals (e.g., sensors, ADCs) via I²C register VOB_EM0_V/VOB_EM2_V. |
| EM2 Quiescent Current | 300 nA (single output enabled) - enables multi-year battery life in always-on sensor nodes with periodic wake-up. |
| Package | QFN20 3×3 mm, 0.5 mm pitch - surface-mount compatible with high-density PCB layouts; thermal pad enhances power dissipation. |
| Coulomb Counter | Lossless, resistorless charge measurement - tracks battery depletion without added BOM cost or board space. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed die pad. Compliant with JEDEC MO-220, RoHS and REACH.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog Supply Input | Provides power to internal ADC, temp sensor, and bias circuitry; decoupling required for noise-sensitive measurements. |
| VDDB | Main Power Input | Primary battery/supply input (1.8–3.6 V); powers DC-DC A/B, LDOs, and digital logic; UVLO active below 1.2 V. |
| VOA | Boost DC-DC Output | Regulated output from wired boost converter; 3.327 V at startup; programmable up to 5.2 V via VOA_V register. |
| VOA_SW | Firmware-Controlled Switch | Enables complete power-down of external high-leakage circuits (e.g., RF front-end, display drivers) in EM2/EM4 modes. |
| VOB | Buck + LDO Output | Primary system rail; combines buck efficiency with LDO B's low-noise regulation; 0.8–3.3 V programmable. |
| VOC | Linear Regulator Output | Independent 1.7–3.3 V LDO; usable standalone or paralleled with VOA for seamless transition near input-output crossover. |
| I2C_SDA / I2C_SCL | I²C Interface Signals | Standard bidirectional I²C bus (up to 1 MHz); used for full register access, energy mode control, and Coulomb counter readout. |
| IRQ | Interrupt Request Output | Active-low open-drain signal notifying host MCU of events: EM mode change, UVLO, over-temp, or Coulomb threshold breach. |
| GND | Ground Reference | Common return path for analog/digital domains; must connect to exposed thermal pad for optimal thermal performance. |
| VIO | I/O Voltage Reference | Supplies level-shifting logic for I²C interface; typically tied to host MCU VDDIO (1.8–3.3 V). |
Key Features
| Feature | Design Value |
|---|---|
| Wired Boost DC-DC A | Fixed hardware topology eliminates mode-control complexity and ensures deterministic startup behavior for battery-fed systems. |
| Firmware-Programmable VOA_SW | Enables zero-current shutdown of external leakage paths during deep-sleep modes, extending battery life beyond theoretical limits. |
| Lossless Coulomb Counting | Measures charge flow without series sense resistor - preserves PCB area, avoids power loss, and eliminates resistor tolerance error. |
| Dual-Mode VOB Regulation | Combines buck converter efficiency with parallel LDO B for stable low-noise output under dynamic load transients and light loads. |
| EM2 Quiescent Current Scalability | Adds only +125 nA per additional enabled output - allows selective rail activation to minimize sleep current in multi-rail systems. |
Applications
| Smart Utility Metering | Wireless Sensor Node |
|---|---|
|
Use Scenario: Battery-powered gas/water meter with LoRaWAN or NB-IoT backhaul, operating 10+ years on two AA alkaline cells. IC Role / Device Role / Timing Role: Primary PMIC supplying 3.3 V to MCU and 1.8 V to sensor interface; manages Coulomb-based battery health reporting. Use Value: 300 nA EM2 current and wired boost topology maintain regulation down to 1.8 V input, enabling full battery utilization before replacement. |
Use Scenario: Sub-GHz environmental sensor node deployed outdoors, sampling temperature/humidity every 5 minutes and transmitting via Si446x transceiver. IC Role / Device Role / Timing Role: Powers MCU (VOB), RF transceiver (VOA), and analog front-end (VOC); coordinates energy mode transitions via IRQ and I²C. Use Value: Lossless Coulomb counting provides accurate remaining battery capacity estimates without adding sense resistor error or power loss. |
| Home Security PIR Sensor | Portable Medical Patch |
|
Use Scenario: Passive infrared motion detector with wake-on-event architecture, sleeping >99.9% of time on CR123A lithium primary cell. IC Role / Device Role / Timing Role: Delivers 3.3 V to MCU and 2.8 V to PIR signal chain; uses VOA_SW to disconnect op-amp bias network during sleep. Use Value: Firmware-controlled VOA_SW reduces system leakage by >10×, directly extending field lifetime beyond 5 years. |
Use Scenario: Disposable wearable patch monitoring ECG and skin temperature, powered by single Li/SOCl₂ cell (3.6 V max). IC Role / Device Role / Timing Role: Regulates 3.3 V for BLE SoC and 1.2 V for analog front-end; monitors battery voltage and temperature for safety compliance. Use Value: UVLO at 1.2 V and over-temperature IRQ ensure safe shutdown before hazardous cell depletion or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DSKR | Single buck-boost converter (no multi-rail, no Coulomb counter, no I²C); 2.5–5.5 V input; 0.8–5.5 V output; 600 nA quiescent current (no EM2 mode) | Lacks integrated Coulomb counting, multi-output flexibility, and ultra-low-EM2 operation; suitable only for simple single-rail boost/buck needs. | Select when only one regulated rail is needed and battery telemetry is handled externally. |
| MAX77650EWL+T | Multi-rail PMIC with buck, boost, LDOs, fuel gauge, and I²C; 2.5–4.8 V input; 600 nA quiescent current (no sub-μA EM2 mode) | Higher quiescent current prevents multi-year operation on primary cells; lacks wired-boost optimization for 1.8–3.6 V input range. | Select for rechargeable Li-ion systems requiring integrated charger and higher input voltage tolerance. |
Compared with TPS63802DSKR and MAX77650EWL+T, the EFP0109GM20-ER uniquely delivers sub-μA EM2 operation with multi-rail flexibility and lossless Coulomb counting across its native 1.8–3.6 V input window - making it the only option qualified for decade-long deployments on primary cells in constrained IoT endpoints.
Availability
EFP0109GM20-ER is available at Aetrix Electronics and suitable for IoT sensors, smart metering, and home security systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEM programs.
Supply support for EFP0109GM20-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 to extend battery life in ultra-low-power embedded systems - delivering configurable multi-rail power, precision energy monitoring, and robust protection for EFM32/EFR32-based designs.
FAQ
What is the input voltage range supported by the EFP0109GM20-ER?
The EFP0109GM20-ER supports a 1.8 V to 3.6 V input voltage range, optimized for dual alkaline, zinc-carbon, or lithium iron-disulfide (Li/FeS₂) primary cells, as well as single LiFePO₄ or Li-ion batteries. This range excludes sub-1.8 V operation and differs from other EFP01 variants like EFP0108GM20-E (0.8–1.8 V).
How does the EFP0109GM20-ER achieve ultra-low quiescent current in EM2 mode?
The EFP0109GM20-ER achieves 300 nA EM2 quiescent current (with one output enabled) through hardware-optimized low-power states, clock gating, and minimized bias currents in its DC-DC and LDO regulators. Each additional enabled output adds only +125 nA, enabling precise trade-offs between functionality and sleep current in the EFP0109GM20-ER design.
Can the EFP0109GM20-ER be used with EFM32 or EFR32 microcontrollers?
Yes, the EFP0109GM20-ER is explicitly designed to power EFM32 and EFR32 devices, providing matched voltage rails (VOA, VOB, VOC), synchronized energy mode transitions via IRQ, and I²C register access for full system-level power management - all documented in the EFP01 Energy Friendly PMIC Family Data Sheet for the EFP0109GM20-ER.
Does the EFP0109GM20-ER include battery voltage monitoring capability?
Yes, the EFP0109GM20-ER includes integrated battery voltage monitoring on the VDDB pin, supporting real-time tracking and threshold-based IRQ assertion. This feature is enabled by default and does not require external components - a key differentiator confirmed in Table 3.1 OPN-Specific Features for the EFP0109GM20-ER.
What is the purpose of the VOA_SW pin on the EFP0109GM20-ER?
The VOA_SW pin on the EFP0109GM20-ER is a firmware-controllable switch that disconnects the VOA output from external high-leakage circuitry (e.g., RF amplifiers, display drivers) during EM2/EM4 sleep modes. This reduces system standby current beyond what VOA regulation alone achieves, directly extending battery life in the EFP0109GM20-ER implementation.
EFP0109GM20-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:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0109GM20-ER FAQ
1.How can I place an order for EFP0109GM20-ER through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0109GM20-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 EFP0109GM20-ER reliable?
The price and inventory of EFP0109GM20-ER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0109GM20-ER is usually 5 days.
3.What payment methods are accepted for EFP0109GM20-ER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0109GM20-ER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0109GM20-ER?
EFP0109GM20-ER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0109GM20-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 EFP0109GM20-ER?
For technical support, including EFP0109GM20-ER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0109GM20-ER requirements.
6.How does Aetrix verify that EFP0109GM20-ER is sourced from the original manufacturer or authorized distributors?
All EFP0109GM20-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 EFP0109GM20-ER meets industry standards.
7.What is the process for return or replacement of EFP0109GM20-ER?
All EFP0109GM20-ER units undergo pre-shipment inspection (PSI). If there is an issue with EFP0109GM20-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 EFP0109GM20-ER part is unused and in its original packaging.
Return procedure for EFP0109GM20-ER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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