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Silicon Labs EFP0110GM20-E
- Part No.:
- EFP0110GM20-E
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0110GM20-E.pdf
- Description:
- EFP0110 WIRED BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
EFP0110GM20-E from Silicon Labs is a highly efficient, firmware-configurable Energy Friendly Power Management IC (PMIC) designed for ultra-low-power battery-powered systems. It delivers three regulated outputs - VOA (3.327 V wired boost), VOB (disabled at startup, 0.8–1.26 V programmable), and VOC (1.870 V LDO) - with 300 nA EM2 quiescent current (single output enabled), 94% peak efficiency, and integrated Coulomb counting. It supports single- or dual-primary-cell inputs (1.8–3.6 V), targeting EFM32/EFR32-based IoT sensors and wearables.
For engineers reviewing the EFP0110GM20-E datasheet, EFP0110GM20-E pinout, EFP0110GM20-E application, or EFP0110GM20-E equivalent, key selection criteria include its wired boost DCDC A configuration, VOB OFF-at-startup behavior, QFN20 3×3 mm package, I²C programmability, and EM4 support with VDDB battery monitoring - all critical for energy-constrained edge node design.
Technical Context
The EFP0110GM20-E implements a fixed-wired boost DCDC A converter (BB_CTRL3.BB_MODE = 7) delivering 3.327 V at startup, with no buck/boost auto-transitioning. Its VOB output is disabled at power-on and configurable within 0.8–1.26 V range via registers, while VOC operates as a standalone 1.870 V LDO. All outputs feature coarse regulators for EM4 operation.
It integrates lossless Coulomb counting referenced to VDDB, full I²C control with Direct Mode for fast energy-mode transitions, IRQ signaling, and safety features including UVLO (1.2 V threshold), over-temperature monitoring, and short-circuit tolerant outputs - all operating across –40°C to +100°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 3.6 V - supports single Li/MnO₂ or dual alkaline/LiFeS₂ primary cells without external regulation. |
| DCDC A Configuration | Wired Boost only - fixed topology; no autonomous buck/boost mode; requires external inductor and output capacitor. |
| VOA Startup Output | 3.327 V - factory-programmed fixed boost voltage; programmable via VOA_V register (1.7374 V + VOA_V × 0.0306 V). |
| VOB Startup State | OFF - output disabled at power-on; enabled and settable between 0.8 V and 1.26 V via VOB_EM0_V/VOB_EM2_V registers. |
| Quiescent Current (EM2) | 300 nA with single output enabled - enables multi-year battery life in always-on sensor nodes with periodic wake-up. |
| Peak Efficiency | 94% - achieved under typical load conditions; reduces thermal stress and extends usable battery capacity. |
| Package | QFN20 3×3 mm, 0.5 mm pitch - surface-mount compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (GND-connected). Compliant with JEDEC MO-220, RoHS and REACH.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply input | Primary analog rail; powers ADC, Coulomb counter, and internal references; must be decoupled near pin. |
| VDDB | Battery input / system supply | Main power source input (1.8–3.6 V); monitored for UVLO, battery voltage sensing, and Coulomb counting. |
| VOA | Boost regulator output | 3.327 V fixed startup output; supplies core logic (e.g., EFM32 MCU VDD); supports up to ~150 mA typical load. |
| VOA_SW | Firmware-controlled switch | Enables complete power-down of external high-leakage circuitry (e.g., RF front-end, sensors) during EM2/EM4. |
| VOB | Programmable LDO output | Disabled at startup; configurable 0.8–1.26 V output for peripherals (e.g., sensors, memory); coarse regulator active in EM4. |
| VOC | Fixed LDO output | 1.870 V output; used for low-noise analog rails or backup domains; independent of DCDC A operation. |
| I2C_SDA / I2C_SCL | I²C bidirectional interface | Configurable I²C bus (up to 400 kHz) for runtime reconfiguration, register read/write, and energy mode control. |
| IRQ | Interrupt request output | Open-drain signal asserting on events: Coulomb counter threshold, over-temperature, UVLO recovery, or ADC completion. |
| GND | Ground reference | Common return for analog/digital/thermal paths; must connect to exposed pad for thermal performance and noise immunity. |
| VIO | I/O supply reference | Supplies I²C and IRQ logic levels; typically tied to VOA or external 1.8–3.3 V rail; defines interface voltage domain. |
Key Features
| Feature | Design Value |
|---|---|
| Firmware-programmable VOA_SW | Enables zero-current shutdown of external leakage paths (e.g., RF transceivers), reducing EM2 system current by >10×. |
| Lossless Coulomb counting | Measures charge flow into load without sense resistor - preserves battery capacity estimation accuracy and eliminates BOM cost/area. |
| EM4-compatible coarse regulators | Each output (VOA/VOB/VOC) includes dedicated low-IQ coarse regulator (<1 µA) enabling true deep-sleep power gating. |
| I²C Direct Mode | Allows sub-10 µs transition between EM0 and EM2 - critical for duty-cycled sensor applications minimizing wake-up latency. |
| Voltage-monitoring ADC | 10-bit ADC with programmable sampling interval monitors VDDB for battery health tracking and dynamic voltage scaling. |
Applications
| Smart Meter Sensor Node | Wireless Wearable Health Monitor |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter with 15-second wake-up interval, measuring water/gas consumption in utility infrastructure. IC Role / Device Role / Timing Role: Primary PMIC supplying MCU (EFM32GG), ultrasonic transceiver, and precision ADC; manages energy modes and battery lifetime estimation. Use Value: 300 nA EM2 quiescent current extends 2xAA alkaline battery life beyond 10 years; Coulomb counting enables accurate remaining capacity reporting. |
Use Scenario: Compact wrist-worn pulse oximeter with optical sensors, BLE radio, and real-time heart-rate analysis. IC Role / Device Role / Timing Role: Central power controller delivering 3.3 V (VOA) to MCU/radio and 1.2 V (VOB) to analog front-end; synchronizes sleep/wake with sensor sampling. Use Value: Wired boost topology maintains stable 3.3 V output across declining Li/MnO₂ cell voltage (3.2 V → 2.0 V); VOA_SW cuts off BLE radio leakage during sleep. |
| Industrial Wireless Sensor Transmitter | Smart Home Door/Window Contact Sensor |
|
Use Scenario: IP67-rated vibration/temperature transmitter using LoRaWAN, deployed in harsh factory environments with 10+ year battery target. IC Role / Device Role / Timing Role: System-level power manager interfacing with EFR32MG21; handles cold-start from low-VIN, EM4 retention, and fault-safe shutdown. Use Value: –40°C to +100°C operation ensures reliability; UVLO and over-temperature IRQ prevent brownouts and thermal runaway in unventilated enclosures. |
Use Scenario: Coin-cell-powered magnetic contact sensor reporting door open/close events via Zigbee to smart hub. IC Role / Device Role / Timing Role: Ultra-low-power PMIC enabling <1 µA average system current; VOA_SW isolates Hall-effect sensor bias circuit when idle. Use Value: 94% efficiency minimizes voltage droop during BLE transmit bursts; QFN20 footprint allows PCB area <12 mm² - essential for compact form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DRVR | Single-output buck converter (1.8–5.5 V IN, 0.6–3.3 V OUT); 150 nA IQ in shutdown, but no Coulomb counter or multi-rail support. | Lacks VOB/VOC outputs and battery monitoring; suitable only for single-rail systems without charge tracking. | Select when only one regulated rail is needed and battery telemetry is handled externally. |
| MAX77650EWL+T | Multi-output PMIC (buck + dual LDOs); 400 nA IQ in shutdown; includes fuel gauge but uses sense-resistor-based Coulomb counting. | Higher quiescent current in active low-power modes; larger 20-pin WLP package; no EM4 coarse regulators. | Prefer when integrated fuel gauge with higher accuracy (±1%) is required and board space permits larger footprint. |
Compared with TPS62840DRVR and MAX77650EWL+T, the EFP0110GM20-E uniquely combines wired boost topology, lossless Coulomb counting, EM4 coarse regulators, and I²C Direct Mode - making it optimal for EFM32/EFR32-based designs requiring long-life battery operation with precise energy accounting.
Availability
EFP0110GM20-E is available at Aetrix Electronics and suitable for IoT sensors, smart metering, and wearable health devices requiring stable component supply, extended lifecycle support, and guaranteed traceable sourcing.
Supply support for EFP0110GM20-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 secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and consumer markets.
The EFP01 family was engineered specifically for energy-constrained battery-powered microcontroller systems - delivering ultra-low quiescent current, integrated power path management, and firmware-configurable regulation to maximize operational lifetime.
FAQ
What is the default startup configuration of the VOB output on the EFP0110GM20-E?
The VOB output on the EFP0110GM20-E is disabled (OFF) at power-on reset. It remains inactive until explicitly enabled and configured via the VOB_EM0_V and VOB_EM2_V registers over I²C. This behavior prevents unintended power delivery to peripherals during boot and aligns with low-energy initialization sequences. The EFP0110GM20-E supports VOB output voltages from 0.8 V to 1.26 V once enabled.
Does the EFP0110GM20-E support buck/boost auto-transitioning like other EFP01 variants?
No, the EFP0110GM20-E is factory-configured for Wired Boost mode only (BB_CTRL3.BB_MODE = 7) and does not support autonomous buck/boost transitioning. Unlike EFP0106/EFP0107, it lacks NTM (Non-Transition Mode) logic and fixed-threshold switching between buck and boost phases. Its boost operation is optimized for stable 3.327 V output across the 1.8–3.6 V input range.
How is Coulomb counting implemented on the EFP0110GM20-E, and what is its accuracy?
The EFP0110GM20-E implements lossless Coulomb counting by measuring charge transfer through the VDDB supply path without an external sense resistor - eliminating insertion loss and BOM cost. Accuracy is specified at ±3% over temperature and lifetime, calibrated against internal references. The counter integrates charge flow into the load and reports via CCA_MSBY/LSBY registers, supporting battery capacity estimation in EFM32/EFR32 host firmware.
What safety protections are built into the EFP0110GM20-E?
The EFP0110GM20-E includes under-voltage lockout (UVLO) that holds the device in reset below 1.2 V on VDDB, over-temperature monitoring with IRQ assertion above +125°C, and short-circuit tolerant outputs capable of surviving sustained 100 mA faults. It also supports programmable inrush current limiting via BB_IRI_CON to prevent input droop during startup - critical for weak primary-cell sources.
Can the EFP0110GM20-E operate from a single lithium thionyl chloride (Li/SOCl₂) cell?
No - the EFP0110GM20-E's specified input voltage range is 1.8 V to 3.6 V, while a fresh Li/SOCl₂ cell starts at ~3.65 V and can exceed the absolute maximum rating of 5.5 V during open-circuit measurement. Although the datasheet lists Li/SOCl₂ compatibility for the broader EFP01 family, the EFP0110GM20-E variant is explicitly rated for 1.8–3.6 V and is intended for Li/MnO₂ or dual-primary-cell use, not Li/SOCl₂.
EFP0110GM20-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:
- 1.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0110GM20-E FAQ
1.How can I place an order for EFP0110GM20-E through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0110GM20-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 EFP0110GM20-E reliable?
The price and inventory of EFP0110GM20-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0110GM20-E is usually 5 days.
3.What payment methods are accepted for EFP0110GM20-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0110GM20-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0110GM20-E?
EFP0110GM20-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0110GM20-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 EFP0110GM20-E?
For technical support, including EFP0110GM20-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0110GM20-E requirements.
6.How does Aetrix verify that EFP0110GM20-E is sourced from the original manufacturer or authorized distributors?
All EFP0110GM20-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 EFP0110GM20-E meets industry standards.
7.What is the process for return or replacement of EFP0110GM20-E?
All EFP0110GM20-E units undergo pre-shipment inspection (PSI). If there is an issue with EFP0110GM20-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 EFP0110GM20-E part is unused and in its original packaging.
Return procedure for EFP0110GM20-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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