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Silicon Labs EFP0107GM20-E
- Part No.:
- EFP0107GM20-E
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0107GM20-E.pdf
- Description:
- EFP0107 BUCK/BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,350
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Product details
Overview
EFP0107GM20-E from Silicon Labs is a buck/boost-configurable Energy Friendly Power Management IC (PMIC) designed for ultra-low-power battery-powered systems. It delivers four regulated outputs - VOA (buck/boost DC-DC), VOB (buck-only DC-DC + LDO), VOC (LDO), and VOA_SW (firmware-controlled switched output) - with 300 nA quiescent current in EM2 mode (single output enabled) and supports input voltages from 1.8 V to 5.5 V. It integrates lossless Coulomb counting and I²C programmability for EFM32/EFR32 microcontroller platforms.
For engineers reviewing the EFP0107GM20-E datasheet, EFP0107GM20-E pinout, EFP0107GM20-E application, or EFP0107GM20-E equivalent, this page provides verified technical context, confirmed pin functions, real-world energy-mode behavior, exact OPN-specific configuration (Buck/Boost mode, VOB disabled at startup), and validated alternative options for low-power IoT power architecture design.
Technical Context
The EFP0107GM20-E implements a dual-DCDC architecture: DCDC A operates in autonomous Buck/Boost mode (BB_CTRL3.BB_MODE = 1), enabling seamless transition between buck, NTM, and boost phases as input voltage approaches output; DCDC B is fixed in buck-only configuration with parallel internal LDO B for improved regulation near dropout. Its Coulomb counter uses no sense resistor and shares one measurement path across EM0/EM2.
Startup defaults disable VOB output and configure VOA for 1.860 V (VOA_V = 0x04), while VOC is set to 1.870 V. The device enters EM4 with coarse regulators active (≤100 µA load capability, ±1.7 V regulation tolerance), and uses IRQ signaling plus I²C direct mode for fast energy-mode transitions - all within a QFN20 3×3 mm package rated for −40 °C to +100 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single/dual primary cells, Li-ion, LiFePO₄, and USB sources without external pre-regulation. |
| VOA Output Mode | Buck/Boost (autonomous NTM) - dynamically selects buck, NTM, or boost based on VDDB–VOA delta; eliminates manual mode switching. |
| Quiescent Current (EM2) | 300 nA with one output enabled - enables multi-year operation in sensor wake-on-event applications. |
| Coulomb Counter | Lossless, no external sense resistor - measures charge delivered to load with firmware-accessible CCA_MSBY/LSBY registers. |
| VOB Startup State | OFF - reduces system leakage at power-up; configurable via VOB_EM0_V/VOB_EM2_V registers post-boot. |
| Package | QFN20 3×3 mm, 0.5 mm pitch - compatible with standard reflow profiles and high-density PCB layouts. |
| Operating Temperature | −40 °C to +100 °C junction - qualified for industrial and outdoor metering environments. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.5 mm pitch), wettable flank, exposed thermal pad (GND-connected). Pin 1 marked by dot; top marking "P07G".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply input | Supplies ADC, temp sensor, and internal references; requires local 100 nF decoupling. |
| VDDB | Main power input | Primary input for DCDC A/B and LDOs; accepts 1.8–5.5 V; connects to battery or USB source. |
| VOA | Main regulated output | Buck/Boost DC-DC output (1.7–5.2 V); powers core MCU rails; supports parallel LDO C for ripple reduction. |
| VOA_SW | Switched output control | Firmware-gated switch enabling full power-down of external high-leakage circuitry in EM2/EM4. |
| VOB | Secondary regulated output | Buck-only DC-DC + LDO B output (0.8–1.26 V); disabled at startup per OPN specification. |
| VOC | Tertiary LDO output | Linear regulator only (1.7–3.3 V); can operate standalone or in parallel with VOA for enhanced PSRR. |
| I2C_SDA / I2C_SCL | I²C interface | Configurable I²C bus (up to 1 MHz) for register access, mode control, and Coulomb counter readout. |
| IRQ | Interrupt request output | Open-drain signal asserting on UVLO, over-temp, CC threshold, or energy-mode transition completion. |
| GND | Ground reference | All analog/digital grounds tied to common plane; thermal pad must be soldered to PCB GND pour. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Buck/Boost (NTM) | Eliminates firmware intervention during input voltage drift - maintains regulation across 1.8–5.5 V input without mode reconfiguration. |
| Firmware-programmable VOA_SW | Enables zero-current shutdown of external RF modules or sensors in EM2/EM4, reducing system standby leakage to sub-µA levels. |
| Lossless Coulomb counting | Tracks total charge delivered to load using internal current-sensing topology - no external resistor, no board area, no power loss. |
| EM2 quiescent current (300 nA) | Supports >10-year battery life in wake-on-event IoT nodes with single-output active (e.g., RTC + interrupt controller). |
| Coarse regulators for EM4 | Provides three independent low-IQ (~150 nA) rails in EM4 - sufficient for basic monitoring while cutting main DCDCs entirely. |
Applications
| Smart Utility Metering | Wireless Sensor Node |
|---|---|
|
Use Scenario: Battery-powered gas/water meter with 10-year lifespan, periodic ultrasonic readings, and LoRaWAN transmission. IC Role / Device Role / Timing Role: Primary PMIC supplying EFR32MG21 MCU core (VOA), RF transceiver bias (VOC), and sensor interface (VOB), with Coulomb counter logging total energy consumed. Use Value: 300 nA EM2 IQ extends battery life; Buck/Boost maintains stable 3.3 V rail as alkaline battery decays from 3.2 V to 1.8 V; VOA_SW cuts RF module leakage during sleep. |
Use Scenario: Sub-GHz environmental sensor node deployed in remote locations, waking every 5 minutes to measure temperature/humidity and transmit via BLE. IC Role / Device Role / Timing Role: System power arbiter managing MCU (VOA), BLE SoC (VOC), and analog front-end (VOB), with IRQ-triggered wake from EM4. Use Value: Autonomous NTM mode avoids firmware overhead during battery voltage sag; coarse regulators enable <200 nA EM4 retention; I²C direct mode ensures <10 µs wake latency. |
| Home Security PIR Sensor | Wearable Health Monitor |
|
Use Scenario: Motion-triggered door/window sensor using passive infrared (PIR) and coin-cell battery, requiring >5-year operation. IC Role / Device Role / Timing Role: Low-power supervisor providing clean 1.8 V rail (VOB) to PIR signal chain and 3.0 V rail (VOA) to microcontroller, with Coulomb counter validating battery health. Use Value: VOB disabled at startup minimizes initial leakage; EM2 IQ of 300 nA ensures motion-triggered wake consumes negligible charge; IRQ pin signals host MCU on detection event. |
Use Scenario: Optical heart-rate monitor worn continuously, sampling PPG data every second and storing locally before nightly Bluetooth sync. IC Role / Device Role / Timing Role: Multi-rail power source delivering 1.2 V (VOB) to analog front-end, 3.3 V (VOA) to MCU, and 2.8 V (VOC) to optical driver, with Coulomb counter tracking daily charge consumption. Use Value: Parallel LDO C on VOA reduces switching noise for sensitive analog measurements; Buck/Boost sustains regulation as Li-ion drops from 4.2 V to 3.0 V; VOA_SW powers down LED drivers between samples. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270PWPR | Fixed-buck-only dual-output PMIC; no Buck/Boost, no Coulomb counter; 2.5 µA IQ (not EM2-optimized) | Lacks autonomous input-voltage adaptation and battery fuel gauging; suited for stable-input industrial controllers, not fading-battery IoT. | Select when cost sensitivity outweighs battery-life optimization and Coulomb data is unnecessary. |
| MAX77650EWL+T | Single-inductor multi-output (SIMO) PMIC; 800 nA IQ in shutdown; integrated battery charger; no native Coulomb counter | Includes Li-ion charging but lacks lossless charge measurement; higher IQ than EFP0107GM20-E in active low-power modes. | Prefer for rechargeable wearable designs needing charging, where Coulomb accuracy is secondary to integration. |
Compared with TPS65270PWPR and MAX77650EWL+T, the EFP0107GM20-E uniquely combines Buck/Boost adaptability, sub-µA EM2 operation, and lossless Coulomb counting - making it optimal for primary-cell IoT endpoints requiring decade-scale battery life and precise energy accounting.
Availability
EFP0107GM20-E is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, and home security PIR sensors requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for EFP0107GM20-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 designed specifically to extend battery life in EFM32/EFR32-based systems - integrating adaptive DC-DC conversion, ultra-low-quiescent regulation, and embedded Coulomb counting into a single QFN20 package.
FAQ
What is the default VOB output state at power-up for EFP0107GM20-E?
The EFP0107GM20-E is factory-configured with VOB disabled at startup (OFF state), as specified in Table 2.1 and confirmed in Table 3.1 of the datasheet. This reduces initial system leakage and allows firmware to enable VOB only when required - for example, after verifying battery voltage stability. The VOB output voltage range remains 0.8 V to 1.26 V when enabled, and its level is set via VOB_EM0_V/VOB_EM2_V registers.
Does EFP0107GM20-E support Buck/Boost operation out-of-the-box?
Yes, EFP0107GM20-E is an OPN-specific member of the EFP01 family configured for Buck/Boost mode (BB_CTRL3.BB_MODE = 1) at power-on. It autonomously transitions between buck, NTM, and boost phases depending on the relationship between VDDB and VOA - no firmware reconfiguration is needed to maintain regulation across the full 1.8–5.5 V input range. This differs from wired-buck variants like EFP0101GM20-E.
How does the Coulomb counter in EFP0107GM20-E achieve lossless measurement?
The EFP0107GM20-E implements a lossless Coulomb counter by measuring inductor current directly inside the DCDC A power train - eliminating the need for an external sense resistor. Charge is accumulated in CCA_MSBY/LSBY registers and reported in coulombs with 16-bit resolution. Because it shares one measurement path across EM0 and EM2, BB_IPK_EM2 must be set equal to BB_IPK to ensure consistent pulse charge per cycle in both energy modes.
What is the purpose of the VOA_SW pin on EFP0107GM20-E?
The VOA_SW pin on EFP0107GM20-E is a firmware-controlled switch that disconnects the VOA output from external high-leakage circuitry - such as RF transceivers or analog sensors - during low-power states (EM2/EM4). When asserted, it reduces system standby current to near-zero, preserving battery life. Its state is controlled via the VOA_SW_STAT register and triggered by I²C commands, not hardware thresholds.
Can EFP0107GM20-E operate with a single alkaline cell?
No - EFP0107GM20-E has a minimum input voltage rating of 1.8 V, which exceeds the usable range of a single alkaline cell (typically 1.5 V nominal, dropping to ~0.9 V). It is designed for dual alkaline/LiFeS₂ (1.6–3.6 V), single Li/MnO₂ (1.8–3.2 V), Li-ion (2.7–4.35 V), or USB-supplied systems. For single-cell alkaline support, EFP0108GM20-E (0.8–1.8 V input) is the appropriate variant.
EFP0107GM20-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 ~ 5.5V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0107GM20-E FAQ
1.How can I place an order for EFP0107GM20-E through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0107GM20-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 EFP0107GM20-E reliable?
The price and inventory of EFP0107GM20-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0107GM20-E is usually 5 days.
3.What payment methods are accepted for EFP0107GM20-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0107GM20-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0107GM20-E?
EFP0107GM20-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0107GM20-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 EFP0107GM20-E?
For technical support, including EFP0107GM20-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0107GM20-E requirements.
6.How does Aetrix verify that EFP0107GM20-E is sourced from the original manufacturer or authorized distributors?
All EFP0107GM20-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 EFP0107GM20-E meets industry standards.
7.What is the process for return or replacement of EFP0107GM20-E?
All EFP0107GM20-E units undergo pre-shipment inspection (PSI). If there is an issue with EFP0107GM20-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 EFP0107GM20-E part is unused and in its original packaging.
Return procedure for EFP0107GM20-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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