SGM41575
I2C Controlled, 1- to 4-Cell, 5A Fully Integrated Buck-Boost Battery Charger with Narrow VDC Power Path Management
The SGM41575 is an integrated 4 switching MOSFETs Buck-Boost battery charger and system power path management device for 1-4 cells Li-Ion or Li-polymer batteries. Its low-impedance power path optimizes efficiency, reduces battery charging time, and extends battery life. I2C programming makes it a flexible powering and charger design solution.
The SGM41575 can detect the input source types which include SDP/CDP/DCP and non-standard adaptor through the D+/D- pins following USB BC1.2 specification. It provides D+/D- handshake to support fast charging with the adjustable high voltage adaptor (HVDCP). The wide full input voltage range and the input current range can also support USB-PD applications.
To support 1-4 cells Li-Ion battery charging, the SGM41575 automatically works at Buck, Boost or Buck-Boost configurations according to the adaptor voltage and the battery voltage. The SGM41575 supports two different input sources with its dual input source selector management.
The SGM41575 employs narrow VDC architecture (NVDC) with BATFET separating system from the battery. Even without battery or with a fully depleted battery, the system is regulated to above the minimum system voltage. The SGM41575 features a dynamic power management (DPM) to avoid input adaptor overloading or to meet the maximum current limit. It keeps the system voltage regulated to its minimum setting in DPM mode by reducing the charge current. The SGM41575 also provides supplement mode to further support system output in case that charge current decreased to zero and the input is still overload. The SGM41575 can provide the maximum power point with an algorithm called input current optimizer (ICO) to avoid the input source overload.
The SGM41575 supports the default mode (standalone) without the host control. It automatically detects the battery voltage and starts charging. A charge cycle automatically terminates when a full charge is detected if the device is not in thermal regulation or DPM mode. The charger automatically initiates a new charging cycle if battery voltage falls below the recharge threshold.
The SGM41575 supports USB On-The-Go (OTG) operation by supplying default 5V on the VBUS with an output current limit up to 3.32A. To support the programmable power supply (PPS) feature defined by the USB-PD 3.0 Specifications, the OTG voltage is programmable from 2.8V to 22V with 10mV resolution.
To save the power from battery to system, the SGM41575 provides an SDRV pin to control an external N-channel ship FET. Host can set charger to ship mode or shutdown mode to reduce the leakage current from battery by I2C.
The SGM41575 provides full protections for safety of battery charging and system operation, including battery temperature monitoring, charging safety timer, over-current and over-voltage protections. When any fault occurs, the SGM41575 asserts an nINT pulse to notify the host.
The SGM41575 provides the integrated 16-bit ADC for monitoring input voltage, input current, battery voltage, charge current, system voltage, battery temperature and die temperature.
The SGM41575 is available in a Green WLCSP- 2.97×3.37-56B package.
- 3.6V to 24V Wide Operating Input Voltage Range
- Up to 30V Sustainable Voltage
- Dual-Input Power Mux Controller for Source Selection
- Ship Mode, Shutdown Mode and System Power Reset Capability by External SFET Control
- USB BC1.2, Non-Standard, and HVDCP Input Source Adaptors Auto Detection
- 22μA (TYP) Quiescent Current at Battery Only Operation
- 0.4μA (TYP) Shutdown Current in Shutdown Mode
- 4 Switching MOSFETs Buck-Boost Charger for 1-4 Cells Battery
- Up to 95.5% Efficiency for 2-Cell 8V Battery and 2A Charge Current from 12V Input
- Programmable Fast Charge Current from 50mA to 5A with 10mA Step
- USB OTG with 2.8V to 22V Adjustable Output to Support USB-PD PPS
- Up to 3.32A Programmable OTG Output Current Limit
- Fully Integrated All MOSFETs, Current Sense and Compensation
- 750kHz and 1.5MHz Programmable Frequency
- Selectable PFM Mode and Out-of-Audio (OOA) Mode at Light Load Operations
- Narrow Voltage DC (NVDC) Power Path Management
- I2C Port for Flexible System Parameter Setting and Status Reporting
- Integrated ADC for Monitoring Input Voltage, Input Current, Battery Voltage, Charge Current, System Voltage, Battery Temperature and Die Temperature
- Input Current Optimizer (ICO) to Maximize Adaptor Output Current without Overloading
- Programmable Input Current Limit (IINDPM) and Dynamic Power Management to Support USB Standard Adaptors
- Maximum Power Tracking by Programmable Input Voltage Limit (VINDPM)
- Safety Features including Configurable JEITA for Battery Temperature Protection
- Battery Charging Safety Timer
- Thermal Regulation and Thermal Shutdown
- Watchdog Monitoring I2C Operation
- VBUS/System/Battery Over-Voltage Protection
- Output Over-Current Protection for Both Forward Charge Mode and OTG Mode
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Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM41575YG/TR | Active | WLCSP-2.97×3.37-56B | 56 | YES | YES | YES | YES | MSL1 | -40℃ to +85℃ | View | View | 1-24 units : $3.5/unit 25-99 units : $3/unit 100-249 units : $2.5/unit 250-499 units : $2/unit 500-999 units : $1.75/unit 1000-9999 units : $1.3/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
