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Silicon Labs EFP0106GM20-E
- Part No.:
- EFP0106GM20-E
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0106GM20-E.pdf
- Description:
- EFP0106 BUCK/BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:331
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Product details
Overview
EFP0106GM20-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 four regulated outputs - including a Buck/Boost DC-DC converter (VOA), a Buck-only DC-DC + LDO (VOB), an independent LDO (VOC), and a firmware-controlled switched output (VOA_SW) - with up to 94% efficiency and EM2 quiescent current as low as 300 nA (single output enabled). It supports single alkaline/LiFeS₂, Li/MnO₂, Li/SOCl₂, Li-ion, and LiFePO₄ batteries across 1.8–5.5 V input, targeting EFM32/EFR32-based IoT sensor nodes.
For engineers reviewing the EFP0106GM20-E datasheet, EFP0106GM20-E pinout, EFP0106GM20-E application, or EFP0106GM20-E equivalent, key selection criteria include its autonomous Buck/Boost topology for wide-input battery operation, lossless Coulomb counting for precise energy monitoring, I²C-configurable voltage rails, and integrated safety features including UVLO, over-temperature IRQ, and short-circuit tolerant outputs.
Technical Context
The EFP0106GM20-E implements a dual-DCDC architecture: DCDC A operates in autonomous Buck/Boost mode (NTM transitional behavior near VDDB ≈ VOA), while DCDC B is fixed Buck-only. Its VOA output is programmable from 1.7 V to 5.2 V via the VOA_V register (VOA = 1.7374 V + VOA_V × 0.0306 V), and VOB is factory-set to 1.858 V at startup with full programmability (0.8–3.3 V).
It integrates lossless Coulomb counting (no sense resistor), a 10-bit ADC for battery voltage monitoring, and configurable I²C with Direct Mode for rapid energy-mode transitions. Safety logic includes under-voltage lockout (<1.2 V on VDDB), over-temperature IRQ assertion, and programmable inrush current limiting via BB_IRI_CON.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports primary cells (alkaline, LiFeS₂, Li/MnO₂, Li/SOCl₂) and rechargeables (Li-ion, LiFePO₄) without external biasing. |
| VOA Output Configuration | Buck/Boost mode - automatically transitions between Buck, NTM, and Boost based on VDDB–VOA differential; enables stable regulation across full battery discharge curve. |
| VOB Startup Voltage | 1.858 V - factory-programmed fixed output at power-on; fully reprogrammable in-system from 0.8 V to 3.3 V via I²C. |
| EM2 Quiescent Current | 300 nA (single output enabled) - enables multi-year battery life in always-on sensor applications with periodic wake-up. |
| Coulomb Counter | Lossless, no external sense resistor - measures charge delivered to load with ±1% accuracy per pulse, enabling precise battery lifetime estimation. |
| Package | QFN20 3×3 mm, 0.5 mm pitch - surface-mount footprint optimized for space-constrained IoT end devices and wearables. |
| Operating Temperature | −40 °C to +100 °C junction - qualified for industrial and extended-temperature embedded deployments. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.5 mm pitch), wettable flank, exposed thermal pad. Pin 1 marked by dot; top marking "P06G".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply input | Primary analog domain power rail; powers ADC, Coulomb counter, and internal references; must be decoupled close to pin. |
| VDDB | Power input for DCDCs and LDOs | Main system input (1.8–5.5 V); supplies DCDC A, DCDC B, LDO B, LDO C, and coarse regulators; connects to battery or USB source. |
| VOA | Main Buck/Boost regulated output | Programmable 1.7–5.2 V output; drives high-current loads (e.g., MCU core, RF transceiver); supports parallel LDO C for improved light-load efficiency. |
| VOA_SW | Firmware-controlled switch output | Open-drain NMOS switch tied to VOA; enables complete power-down of external high-leakage circuitry (e.g., sensors, amplifiers) during EM2/EM4. |
| VOB | Buck-only regulated output | Factory-set 1.858 V at startup; programmable 0.8–3.3 V; supplies EFM32/EFR32 peripherals; internally paralleled with LDO B for enhanced regulation near dropout. |
| VOC | Independent LDO output | Programmable 1.7–3.3 V; can operate standalone or in parallel with VOA to reduce ripple and improve efficiency at light loads. |
| I2C_SDA / I2C_SCL | I²C bidirectional data/clock | Standard-mode (100 kHz) and fast-mode (400 kHz) interface; supports Direct Mode for sub-μs energy-mode transitions without host intervention. |
| IRQ | Interrupt request output | Active-low open-drain signal asserting on UVLO, over-temperature, Coulomb counter threshold, or ADC limit events; requires external pull-up. |
| GND | Ground reference | Common analog/digital return; must be connected to exposed thermal pad for thermal performance and noise immunity. |
| LA1 / LA2 | DCDC A inductor connections | Connect external inductor (LA) between LA1 and LA2; LA1 ties to VDDB, LA2 to VOA; critical for Buck/Boost loop stability and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Buck/Boost DCDC A | Eliminates manual mode switching - seamlessly transitions between Buck, NTM, and Boost based on real-time VDDB–VOA delta, maintaining regulation across full battery voltage range (e.g., 3.6 V → 2.0 V). |
| Firmware-programmable VOA_SW | Enables zero-static-current shutdown of external high-leakage circuits (e.g., op-amps, sensors) during EM2/EM4, reducing system standby current below 1 µA. |
| Lossless Coulomb counting | Measures total charge delivered to load without series sense resistor - preserves PCB area, avoids power loss, and eliminates resistor tolerance drift errors. |
| Configurable I²C Direct Mode | Allows hardware-triggered energy-mode transitions (e.g., EM0 ↔ EM2) without CPU involvement - cuts wake-up latency to <1 µs and removes firmware dependency. |
| Integrated safety monitoring | Combines UVLO (1.2 V threshold), over-temperature IRQ, short-circuit tolerant outputs, and programmable inrush limiting - reduces need for external protection components. |
Applications
| Smart Meter Sensor Node | Wireless Building Automation Sensor |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter with 10-year target lifetime, operating in −25 °C to +70 °C outdoor enclosures. IC Role / Device Role / Timing Role: Primary PMIC supplying 3.3 V (VOA) to MCU and RF SoC, 1.8 V (VOB) to analog front-end, and 2.5 V (VOC) to precision ADC; manages Coulomb counting for battery health reporting. Use Value: Buck/Boost topology maintains regulation as LiSOCl₂ cell drops from 3.65 V to 2.8 V; 300 nA EM2 current extends battery life beyond 12 years. |
Use Scenario: Zigbee-enabled occupancy sensor deployed in commercial HVAC ducts, powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Supplies 3.0 V (VOA) to MCU and radio, 1.8 V (VOB) to PIR signal chain, and uses VOA_SW to power-cycle IR LED array only during detection windows. Use Value: Firmware-controlled VOA_SW reduces average current by 85% during idle; NTM transitional mode prevents output collapse when battery sags to 2.2 V under pulse load. |
| Wearable Health Monitor | Industrial Predictive Maintenance Node |
|
Use Scenario: Skin-contact ECG patch with Bluetooth LE, requiring medical-grade signal integrity and 6-month battery life on CR2032. IC Role / Device Role / Timing Role: Delivers 1.8 V (VOB) to MCU, 3.3 V (VOA) to BLE radio, and 2.8 V (VOC) to low-noise instrumentation amplifier; enables EM4 deep-sleep with Coulomb counter active. Use Value: Lossless Coulomb counting tracks microamp-level leakage across sleep cycles; LDO C parallel mode suppresses switching ripple on analog rail, improving SNR by >15 dB. |
Use Scenario: Vibration-sensing node on rotating machinery, harvesting energy intermittently but requiring reliable boot from 2.5 V backup capacitor. IC Role / Device Role / Timing Role: Powers Cortex-M4 MCU (VOA), MEMS accelerometer (VOB), and flash memory (VOC); uses IRQ to signal over-temperature event before bearing failure. Use Value: UVLO holds device in reset until VDDB ≥ 1.2 V, preventing erratic boot from weak harvested energy; over-temperature IRQ triggers immediate shutdown at 100 °C junction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270PWPR | Fixed dual-Buck + LDO; no Buck/Boost, no Coulomb counter, higher 25 µA quiescent current in LP mode. | Lacks autonomous wide-input regulation and battery fuel gauging; suited for stable-input industrial rails, not primary-cell IoT. | Select if system uses regulated 3.3 V/5 V input and requires higher output current (>1.5 A) over wide temperature. |
| MAX77650EWL+T | Single-input Buck/Boost + LDO + charger; includes integrated Li-ion charging; 700 nA shutdown current but no lossless Coulomb counting. | Designed for rechargeable wearable platforms; lacks VOA_SW switch and EM2-optimized low-Iq sequencing. | Prefer for battery-charging applications where Coulomb counting is secondary to charge management and compact footprint. |
Compared with TPS65270PWPR and MAX77650EWL+T, the EFP0106GM20-E uniquely combines Buck/Boost autonomy, lossless Coulomb counting, and sub-µA EM2 operation - making it optimal for long-life primary-cell sensor nodes requiring accurate energy accounting and minimal BOM count.
Availability
EFP0106GM20-E is available at Aetrix Electronics and suitable for IoT sensors and end devices, smart metering, and home/building automation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for EFP0106GM20-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 SoCs, timing solutions, and energy-efficient power management ICs for IoT and embedded markets.
The EFP01 family was engineered specifically for battery-operated edge devices demanding multi-year runtime, precise energy monitoring, and seamless integration with EFM32/EFR32 MCUs - emphasizing ultra-low quiescent current, firmware configurability, and system-level safety.
FAQ
What is the default startup configuration of the EFP0106GM20-E?
The EFP0106GM20-E powers up in Buck/Boost mode with VOA set to 1.860 V and VOB set to 1.858 V. Its DCDC A operates autonomously, transitioning between Buck, NTM, and Boost based on input-output voltage differential. VOC defaults to 1.870 V, and all outputs are enabled unless modified via I²C. This configuration ensures immediate regulation across diverse battery chemistries without host initialization.
How does the lossless Coulomb counter in the EFP0106GM20-E work without a sense resistor?
The EFP0106GM20-E implements an internal current-sensing architecture that monitors the magnetic flux in the DCDC A inductor (LA1/LA2) and correlates pulse count, duration, and peak current (set by BB_IPK) to compute charge delivered. This eliminates external sense resistors, saving board space and avoiding associated power loss and thermal drift - delivering ±1% pulse-to-pulse accuracy for battery lifetime modeling.
Can the EFP0106GM20-E support dual alkaline batteries (2.4–3.2 V) while powering a 3.3 V MCU rail?
Yes - the EFP0106GM20-E's Buck/Boost DCDC A supports input ranges up to 5.5 V and programmable VOA up to 5.2 V. When configured for 3.3 V output, it operates in Buck mode above ~3.6 V input and transitions smoothly into NTM/Boost as battery voltage drops below 3.3 V, maintaining regulation down to 1.8 V input. This avoids brownouts during deep discharge.
What safety protections are built into the EFP0106GM20-E?
The EFP0106GM20-E integrates under-voltage lockout (UVLO) that holds the device in reset below 1.2 V on VDDB, over-temperature monitoring with IRQ assertion at 100 °C junction, short-circuit tolerant outputs (no latch-off), and programmable inrush current limiting via BB_IRI_CON. These features eliminate the need for external protection circuitry in most battery-powered designs.
Is the EFP0106GM20-E pin-compatible with other EFP01 family members?
No - all EFP01 variants (EFP0101–EFP0111) share the same QFN20 3×3 mm package and identical pinout, including VDDA, VDDB, VOA, VOB, VOC, VOA_SW, I²C, IRQ, LA1, LA2, and GND. This allows hardware reuse across configurations; only firmware settings and OTP defaults differ between part numbers.
EFP0106GM20-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:
- -
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0106GM20-E FAQ
1.How can I place an order for EFP0106GM20-E through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0106GM20-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 EFP0106GM20-E reliable?
The price and inventory of EFP0106GM20-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0106GM20-E is usually 5 days.
3.What payment methods are accepted for EFP0106GM20-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0106GM20-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0106GM20-E?
EFP0106GM20-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0106GM20-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 EFP0106GM20-E?
For technical support, including EFP0106GM20-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0106GM20-E requirements.
6.How does Aetrix verify that EFP0106GM20-E is sourced from the original manufacturer or authorized distributors?
All EFP0106GM20-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 EFP0106GM20-E meets industry standards.
7.What is the process for return or replacement of EFP0106GM20-E?
All EFP0106GM20-E units undergo pre-shipment inspection (PSI). If there is an issue with EFP0106GM20-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 EFP0106GM20-E part is unused and in its original packaging.
Return procedure for EFP0106GM20-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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