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Silicon Labs EFP0108GM20-E
- Part No.:
- EFP0108GM20-E
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0108GM20-E.pdf
- Description:
- EFP0108 SINGLE-CELL BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,648
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Product details
Overview
EFP0108GM20-E from Silicon Labs is a single-cell boost-configured Energy Friendly Power Management IC (PMIC) designed for ultra-low-power battery-powered systems. It supports 0.8–1.8 V input (e.g., single alkaline/zinc-carbon/Li/FeS₂ primary cells), delivers up to 94% efficiency, provides four regulated outputs (VOA boost, VOB LDO, VOC LDO, VOA_SW switched rail), and integrates lossless Coulomb counting with 150 nA EM2 quiescent current (no outputs enabled).
For engineers reviewing the EFP0108GM20-E datasheet, EFP0108GM20-E pinout, EFP0108GM20-E application, or EFP0108GM20-E equivalent, this device is selected for sub-1.8 V primary-cell IoT sensors requiring precise energy accounting, firmware-programmable power sequencing, and EM2/EM4 ultra-low-power operation without external sense resistors.
Technical Context
The EFP0108GM20-E implements a wired boost DC-DC A converter (BB_CTRL3.BB_MODE = 7) with fixed 1.860 V VOA startup voltage and non-programmable VOB output disabled at startup. Its Coulomb counter operates losslessly on VDDA, enabling accurate charge tracking for single-cell chemistries where battery voltage monitoring is required but VDDB-based sensing is unavailable.
It features dedicated coarse regulators per output for EM4 retention, short-circuit tolerant outputs, UVLO activation below 1.2 V on VDDB, and I²C-configurable energy modes - all within a QFN20 3×3 mm package optimized for space-constrained sensor nodes operating from −40 °C to +100 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8 V to 1.8 V - supports single primary cells (alkaline, zinc-carbon, Li/FeS₂) without external pre-regulation. |
| VOA Output Configuration | Wired Boost mode only - fixed startup voltage 1.860 V; programmable via VOA_V register (1.7–5.2 V range). |
| VOB Startup State | OFF - no default output; configurable 0.8–1.26 V LDO for low-noise digital rails in wake-up sequences. |
| Quiescent Current (EM2) | 150 nA (no outputs enabled) - enables multi-year battery life in always-on sensor endpoints. |
| Coulomb Counter Input | VDDA pin only - lossless, sense-resistor-free charge measurement for single-cell battery monitoring. |
| Package | QFN20 3×3 mm - surface-mount footprint compatible with automated assembly and thermal management in compact PCBs. |
| Operating Temperature | −40 °C to +100 °C junction - validated for industrial and outdoor metering deployments. |
Pinout & Package
QFN20 3×3 mm package with exposed thermal pad (pin 20). Pin functions are defined per EFP01 family specification and verified for EFP0108GM20-E in datasheet Section 8.1 and Table 3.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Battery input (analog domain) | Main power source for Coulomb counter and ADC; monitored for single-cell voltage sensing. |
| VDDB | Battery input (digital domain) | Supplies digital logic and I²C interface; UVLO threshold set at 1.2 V. |
| VOA | Boost regulator output | Primary system rail (e.g., 1.8–3.3 V); supports firmware-programmed voltage via VOA_V register. |
| VOA_SW | Firmware-controlled switch | Enables complete power-down of high-leakage peripherals (e.g., RF modules) in EM2/EM4 sleep states. |
| VOB | LDO output | Low-noise 0.8–1.26 V supply for sensitive analog/digital subsystems; disabled at startup. |
| VOC | LDO output | 1.7–3.3 V independent or parallel regulator; used for backup rails or noise isolation. |
| I2C_SDA / I2C_SCL | I²C bidirectional interface | Configures registers, reads Coulomb count, controls energy modes; supports Direct Mode for fast transitions. |
| IRQ | Interrupt request output | Asserts on over-temperature, UVLO, or Coulomb threshold events; wakes host MCU without polling. |
| GND | Analog/digital ground | Common reference for all domains; requires low-impedance connection to thermal pad (pin 20). |
| LA1 / LA2 | DC-DC A inductor connections | External boost inductor terminals; LA1 connects to VDDA, LA2 to VOA node. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cell boost architecture | Optimized for 0.8–1.8 V inputs (e.g., Li/FeS₂, alkaline), eliminating need for external boost pre-regulators in low-voltage sensor designs. |
| Firmware-programmable VOA_SW | Enables zero-leakage shutdown of external circuitry during EM2/EM4, reducing system standby current to true nanoamp levels. |
| Lossless Coulomb counting on VDDA | Accurate battery charge tracking without sense resistor losses or board area penalty - critical for lifetime estimation in sealed devices. |
| EM2 quiescent current: 150 nA | Supports >10-year battery life in intermittently active IoT endpoints (e.g., water meters, occupancy sensors) with minimal wake-up overhead. |
| Short-circuit tolerant outputs | Withstands momentary shorts without latch-up or damage, improving field reliability in unattended remote deployments. |
Applications
| Smart Utility Metering | Wireless Sensor Nodes |
|---|---|
|
Use Scenario: Battery-powered ultrasonic water/gas meter with 10+ year lifetime requirement and periodic RF transmission. IC Role / Device Role / Timing Role: Primary PMIC managing single Li/FeS₂ cell, powering MCU, ultrasonic transducer driver, and sub-GHz radio; Coulomb counter tracks total consumed charge for predictive maintenance. Use Value: 150 nA EM2 current extends battery life beyond 12 years; VOA_SW cuts radio leakage to zero between transmissions. |
Use Scenario: Indoor air quality sensor using EFM32 microcontroller, electrochemical gas sensors, and BLE radio. IC Role / Device Role / Timing Role: Supplies 1.8 V to MCU core (VOA), 1.1 V to analog front-end (VOB), and 3.0 V to BLE SoC (VOC); manages wake-up sequencing via I²C Direct Mode. Use Value: Wired boost configuration ensures stable 1.8 V rail down to 0.8 V battery voltage; lossless Coulomb counting enables accurate battery state-of-charge reporting. |
| Industrial Asset Monitors | Medical Wearables |
|
Use Scenario: Vibration and temperature monitor on rotating machinery, powered by single alkaline AA cell. IC Role / Device Role / Timing Role: Powers accelerometer, temperature sensor, and LoRaWAN transceiver; IRQ pin triggers wake-up on vibration threshold exceedance. Use Value: Short-circuit tolerant outputs protect against sensor wiring faults; −40 °C to +100 °C operation ensures reliability in harsh environments. |
Use Scenario: Disposable glucose patch with 6-month battery life, requiring precise energy accounting and low-noise analog supply. IC Role / Device Role / Timing Role: Generates clean 1.2 V analog rail (VOB) for biosensor signal chain and 3.3 V digital rail (VOC) for BLE MCU; Coulomb counter validates battery health before patient use. Use Value: Lossless charge measurement avoids calibration drift; EM2 current <200 nA meets ISO 14971 safety margin requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DSKR | Single-inductor buck-boost IC (2.5–5.5 V input); no integrated Coulomb counter; 350 nA quiescent current (typ.) in shutdown. | Requires external fuel gauge IC for battery monitoring; suited for USB/multi-cell systems, not sub-1.8 V primary cells. | Select when input voltage exceeds 2.5 V and Coulomb counting is handled externally. |
| MAX77650EWL+T | Multi-rail PMIC with integrated Coulomb counter (I²C); 2.5–4.8 V input; 700 nA quiescent current in ship mode. | Designed for Li-ion wearables; lacks sub-1.8 V support and EM2 optimization for primary cells. | Prefer for rechargeable Li-ion systems needing higher integration but not ultra-low-Vin operation. |
Compared with TPS63802DSKR and MAX77650EWL+T, the EFP0108GM20-E uniquely supports 0.8 V input and delivers 150 nA EM2 current with on-chip lossless Coulomb counting - making it the only qualified option for long-life, single-primary-cell IoT sensors requiring certified energy accounting.
Availability
EFP0108GM20-E is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, industrial asset monitors, and medical wearables requiring stable component supply across multi-year production cycles.
Supply support for EFP0108GM20-E 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 low-power wireless and mixed-signal ICs for IoT, infrastructure, and industrial markets.
The EFP01 family was designed specifically for energy-constrained battery-powered systems - delivering ultra-low quiescent current, integrated Coulomb counting, and flexible multi-rail power architecture for EFM32/EFR32-based endpoints.
FAQ
What battery chemistries does the EFP0108GM20-E support?
The EFP0108GM20-E supports single-cell primary batteries including alkaline, zinc-carbon, and lithium iron-disulfide (Li/FeS₂) with 0.8–1.8 V input range. It is not rated for Li-ion, LiFePO₄, or dual-cell configurations. This matches its wired boost architecture and VDDA-based Coulomb counter design, which is optimized exclusively for low-voltage primary cells.
Does the EFP0108GM20-E provide Coulomb counting on VDDB or VDDA?
The EFP0108GM20-E performs lossless Coulomb counting exclusively on the VDDA pin - the analog-domain battery input. This is confirmed in Table 3.1 (OPN-Specific Features) and Section 3.4.1, which states battery voltage monitoring is "Yes, on VDDA" for EFP0108. VDDB is not monitored for charge integration.
What is the default VOB output state at power-up for EFP0108GM20-E?
Per Table 2.1 and Table 3.1, the EFP0108GM20-E has VOB Configuration at Startup set to OFF. This means the VOB LDO is disabled immediately after reset and must be explicitly enabled and configured via I²C before delivering regulated output. No default voltage is applied.
Can the EFP0108GM20-E operate in Buck/Boost mode?
No. The EFP0108GM20-E is factory-configured for Single-Cell Boost mode only (BB_CTRL3.BB_MODE = 7), as specified in Table 2.1 and Section 4.1.4. It cannot be reconfigured to Buck/Boost, Wired Buck, or Boost Bootstrap - those modes are exclusive to other OPNs like EFP0106 or EFP0111.
What package and pin count does the EFP0108GM20-E use?
The EFP0108GM20-E uses a QFN20 3×3 mm package with 20 terminals, including an exposed thermal pad (pin 20). This is explicitly stated in Table 2.1 (Package = QFN20) and confirmed in Section 9, which defines mechanical dimensions and land patterns for the QFN20 variant.
EFP0108GM20-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- EFP01
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- 24nA
- Voltage - Supply:
- 0.8V ~ 1.8V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0108GM20-E FAQ
1.How can I place an order for EFP0108GM20-E through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0108GM20-E 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 EFP0108GM20-E reliable?
The price and inventory of EFP0108GM20-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0108GM20-E is usually 5 days.
3.What payment methods are accepted for EFP0108GM20-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0108GM20-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0108GM20-E?
EFP0108GM20-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0108GM20-E 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 EFP0108GM20-E?
For technical support, including EFP0108GM20-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0108GM20-E requirements.
6.How does Aetrix verify that EFP0108GM20-E is sourced from the original manufacturer or authorized distributors?
All EFP0108GM20-E 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 EFP0108GM20-E meets industry standards.
7.What is the process for return or replacement of EFP0108GM20-E?
All EFP0108GM20-E units undergo pre-shipment inspection (PSI). If there is an issue with EFP0108GM20-E, 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 EFP0108GM20-E part is unused and in its original packaging.
Return procedure for EFP0108GM20-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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