My Inquiry
My Account
Silicon Labs EFP0109GM20-DR
- Part No.:
- EFP0109GM20-DR
- Manufacturer:
- Silicon Labs
- Category:
- Power Management - Specialized
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
EFP0109GM20-DR.pdf
- Description:
- EFP0109 WIRED BOOST PMIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,786
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
EFP0109GM20-DR 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 - a wired-boost DC-DC converter (VOA), a buck-only DC-DC + LDO (VOB), and an independent LDO (VOC) - with Coulomb counting, I²C control, and IRQ signaling. It supports single Li/FeS₂ or dual alkaline primary cells (1.8–3.6 V input) and targets EFM32/EFR32-based IoT sensors and wearables.
For engineers reviewing the EFP0109GM20-DR datasheet, EFP0109GM20-DR pinout, EFP0109GM20-DR application, or EFP0109GM20-DR equivalent, key selection criteria include its wired-boost topology (not buck/boost), 3.327 V VOA startup voltage, 0.8–3.3 V programmable VOB range, EM2 quiescent current of 300 nA (single output enabled), and QFN20 3×3 mm package with thermal pad.
Technical Context
The EFP0109GM20-DR implements a fixed-wired boost configuration for DCDC A (BB_CTRL3.BB_MODE = 7), delivering VOA at 3.327 V at startup and supporting firmware-programmable output voltages from 1.7 V to 5.2 V via the VOA_V register. Its DCDC B operates exclusively in buck mode with VOB startup set to 1.858 V and a programmable range of 0.8–3.3 V.
It integrates lossless Coulomb counting, fully configurable I²C interface, and an IRQ pin for energy-mode transitions. Safety features include short-circuit tolerant outputs, UVLO (1.2 V threshold), and over-temperature monitoring - all operating across –40°C to +100°C junction temperature with input supply from 1.8 V to 3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 3.6 V - matches dual alkaline/LiFeS₂ primary cell stack; excludes sub-1.8 V operation supported by EFP0108. |
| DCDC A Configuration | Wired Boost only - no autonomous buck/boost transition; requires external inductor and fixed topology per OPN. |
| VOA Startup Voltage | 3.327 V - factory-programmed default; firmware-adjustable via VOA_V register (1.7374 V + VOA_V × 0.0306 V). |
| VOB Output Range | 0.8 V to 3.3 V - supports wide-core logic and RF peripherals; OFF-state configurable at startup. |
| EM2 Quiescent Current | 300 nA (single output enabled) - enables multi-year battery life in EM2 sleep mode for sensor endpoints. |
| Package | QFN20 3×3 mm with exposed thermal pad - standard footprint for space-constrained IoT PCBs; RoHS-compliant. |
| Operating Temperature | –40°C to +100°C junction - validated for industrial and outdoor metering environments. |
Pinout & Package
Package: QFN20 (3 mm × 3 mm, 0.4 mm pitch), thermally enhanced with exposed pad (GND-connected). Compliant with JEDEC MO-220, MS-013 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply input | Supplies internal ADC, temp sensor, and bias circuitry; decoupling required near pin. |
| VDDB | Main power input | Primary input for DCDC A/B and LDOs; accepts 1.8–3.6 V; connects to battery or USB-derived rail. |
| VOA | Boost DC-DC output | Main system rail (e.g., 3.3 V); supports up to ~150 mA typical load; firmware-voltage programmable. |
| VOA_SW | Firmware-controlled switch | Enables full power-down of high-leakage external circuits (e.g., sensors, radios) during EM2/EM4 sleep. |
| VOB | Buck DC-DC + LDO output | Secondary regulated rail (0.8–3.3 V); combines efficiency of buck with LDO ripple suppression. |
| VOC | Linear regulator output | Third independent rail (1.7–3.3 V); low-noise option for analog/RF subsystems or used in parallel with VOA. |
| I2C_SDA / I2C_SCL | I²C bidirectional interface | Configures registers, reads Coulomb counter, monitors status; supports standard/fast-mode speeds. |
| IRQ | Interrupt request output | Active-low signal notifying host MCU of events: EM mode change, UVLO, over-temp, or Coulomb threshold. |
| GND | Ground reference | All analog/digital grounds tied internally; exposed pad must be soldered to PCB GND plane for thermal/EMI performance. |
| LA1 / LA2 | DCDC A inductor connections | Connect external boost inductor (LA); LA1 = switch node, LA2 = output filter node. |
| LB | DCDC B inductor connection | Connects external buck inductor (LB); single-pin interface for buck topology only. |
| VIO | I/O voltage reference | Sets logic level for I²C and IRQ; typically tied to VOA or system I/O rail (1.8–3.6 V). |
| TEMP | Temperature sensor output | Analog voltage proportional to die temperature; read via integrated ADC channel. |
| ADC_IN | External analog input | Supports battery voltage monitoring or external sensor inputs; 12-bit ADC with internal reference. |
| NC | No-connect | Pins 13, 14, 17, 18 - unused; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Lossless Coulomb Counter | Measures charge delivered to load without sense resistor - preserves accuracy and eliminates board area/power loss. |
| Firmware-Programmable VOA_SW | Enables zero-leakage shutdown of external peripherals in EM2/EM4 - extends battery life beyond PMIC's own 300 nA EM2 draw. |
| Multi-Mode DCDC A | Fixed wired-boost topology ensures predictable efficiency and stability for 1.8–3.6 V inputs targeting ≥3.3 V outputs - avoids NTM transition complexity. |
| Dual-Range VOB Output | 0.8–3.3 V programmability supports both ultra-low-voltage MCUs (e.g., EFM32 Zero Gecko) and 3.3 V peripherals - one part fits multiple SoC families. |
| Integrated Safety Monitoring | On-die temperature sensing + UVLO + short-circuit tolerance eliminate need for external protection circuitry - reduces BOM count and layout risk. |
Applications
| Smart Meter Sensor Node | Wireless Wearable Health Monitor |
|---|---|
Use Scenario: Battery-powered ultrasonic flow sensor in water/gas meter with 10-year lifetime requirement and periodic wake-up for data transmission. IC Role / Device Role / Timing Role: Primary PMIC supplying 3.3 V to MCU and sensor interface, managing Coulomb-counted battery depletion, and enabling deep-sleep via VOA_SW shutdown of analog front-end. Use Value: 300 nA EM2 quiescent current + lossless Coulomb counting enables precise end-of-life prediction without adding series resistance or calibration drift. | Use Scenario: Compact wrist-worn pulse oximeter using EFR32BG22, requiring stable 1.1 V core and 3.3 V BLE radio rails from coin cell. IC Role / Device Role / Timing Role: Dual-rail power source: VOB supplies 1.1 V to MCU core, VOA supplies 3.3 V to BLE transceiver; VOC powers low-noise analog signal chain. Use Value: Wired-boost topology delivers >90% efficiency at 2.4–3.0 V input - outperforms buck/boost alternatives in mid-to-late battery life where input voltage remains above 2.4 V. |
| Industrial Wireless Temperature Transmitter | Smart Home Door/Window Sensor |
Use Scenario: IP66-rated outdoor temperature node powered by two AA alkalines, transmitting via Sub-GHz every 5 minutes. IC Role / Device Role / Timing Role: System power manager providing regulated VOA (3.3 V) for MCU/radio, VOB (1.8 V) for sensor interface, and IRQ-triggered wake-up on temperature threshold. Use Value: –40°C to +100°C operation and short-circuit tolerant outputs ensure reliability in uncontrolled environments without external protection components. | Use Scenario: Battery-powered Z-Wave door/window contact sensor with magnet reed switch and 5-year battery life target. IC Role / Device Role / Timing Role: Ultra-low-quiescent PMIC enabling EM4 shutdown between events; VOA_SW cuts power to reed-switch conditioning circuit during sleep. Use Value: Firmware-controlled VOA_SW eliminates standby leakage of external comparators - critical for achieving sub-1 µA system sleep current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DSKR | Buck-boost topology, 1.8–5.5 V input, fixed 3.3 V output; no Coulomb counter or I²C; 2.5 µA quiescent current in LP mode. | Lacks firmware configurability, battery monitoring, and ultra-low EM2 current - suitable only for simpler, non-telemetric designs. | Select when Coulomb counting and <300 nA sleep current are unnecessary and fixed-output simplicity is prioritized. |
| MAX77650EWL+T | Single-inductor multi-output PMIC with buck-boost, 2.5–4.8 V input, integrated fuel gauge, I²C, but 2.7 µA typical quiescent current. | Higher quiescent current and narrower input range limit use in primary-cell applications below 2.5 V. | Prefer for Li-ion rechargeable systems needing integrated fuel gauging, not for long-life primary-cell IoT nodes. |
Compared with TPS63802DSKR and MAX77650EWL+T, the EFP0109GM20-DR uniquely combines wired-boost efficiency above 2.4 V input, sub-µA EM2 operation, and lossless Coulomb counting - making it optimal for firmware-upgradable, battery-life-critical primary-cell sensor nodes.
Availability
EFP0109GM20-DR is available at Aetrix Electronics and suitable for IoT sensors, smart metering, and wearable health devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for EFP0109GM20-DR 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 microcontroller-based systems - delivering configurable multi-rail power, precision energy measurement, and robust protection in minimal footprint.
FAQ
What is the input voltage range supported by the EFP0109GM20-DR?
The EFP0109GM20-DR supports an input voltage range of 1.8 V to 3.6 V, optimized for dual alkaline, zinc-carbon, or lithium iron-disulfide (Li/FeS₂) primary cells. This range excludes sub-1.8 V operation - unlike EFP0108 - and does not support USB or Li-ion inputs. The specified range ensures stable wired-boost operation and accurate Coulomb counting across the usable battery discharge curve.
How does the EFP0109GM20-DR differ from other EFP01 family members like EFP0106GM20-E?
The EFP0109GM20-DR uses a fixed wired-boost configuration (BB_CTRL3.BB_MODE = 7), whereas EFP0106GM20-E implements autonomous buck/boost (BB_MODE = 1) with NTM transitional mode. EFP0109GM20-DR starts VOA at 3.327 V and supports 1.8–3.6 V input, while EFP0106GM20-E accepts 1.8–5.5 V and enables seamless input-to-output crossover. Their register defaults, safety thresholds, and EM4 behavior also differ per OPN-specific OTP settings.
Can the VOA output voltage of the EFP0109GM20-DR be adjusted after power-up?
Yes, the VOA output voltage of the EFP0109GM20-DR is fully firmware-adjustable via the VOA_V register (address 0x33) using I²C. The output follows VOA(V) = 1.7374 V + (VOA_V × 0.0306 V), supporting 1.7–5.2 V range. This allows dynamic rail scaling - e.g., lowering VOA during idle periods to reduce system power - without hardware changes or external components.
Does the EFP0109GM20-DR support Coulomb counting with the VOA output active?
Yes, the EFP0109GM20-DR provides lossless Coulomb counting for the VOA output path using an internal current-sensing architecture - no external sense resistor required. Charge measurement is accessible via CCA_MSBY/LSBY registers and updates continuously during EM0/EM2 operation. Accuracy is maintained across the full 1.7–5.2 V VOA range and load currents up to rated maximum.
What is the function of the VOA_SW pin on the EFP0109GM20-DR?
The VOA_SW pin on the EFP0109GM20-DR is a firmware-controlled switch that disconnects the VOA output rail from external circuitry. When asserted via the VOA_SW_STAT register, it enables complete power-down of high-leakage peripherals (e.g., sensors, RF front-ends) during EM2/EM4 sleep modes - reducing system-level standby current far below the PMIC's own 300 nA EM2 draw.
EFP0109GM20-DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- EFP01
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Applications:
- Industrial Automation
- Current - Supply:
- 24nA
- Voltage - Supply:
- 1.8V ~ 3.5V
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x3)
EFP0109GM20-DR FAQ
1.How can I place an order for EFP0109GM20-DR through Aetrix?
Please submit a Request for Quotation (RFQ) for EFP0109GM20-DR 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-DR reliable?
The price and inventory of EFP0109GM20-DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EFP0109GM20-DR is usually 5 days.
3.What payment methods are accepted for EFP0109GM20-DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EFP0109GM20-DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EFP0109GM20-DR?
EFP0109GM20-DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EFP0109GM20-DR 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-DR?
For technical support, including EFP0109GM20-DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EFP0109GM20-DR requirements.
6.How does Aetrix verify that EFP0109GM20-DR is sourced from the original manufacturer or authorized distributors?
All EFP0109GM20-DR 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-DR meets industry standards.
7.What is the process for return or replacement of EFP0109GM20-DR?
All EFP0109GM20-DR units undergo pre-shipment inspection (PSI). If there is an issue with EFP0109GM20-DR, 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-DR part is unused and in its original packaging.
Return procedure for EFP0109GM20-DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EFP0109GM20-DR Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
