SGM41620

Active

I2C Controlled Single Cell High Efficiency 8A Switched Cap and 4A Switched Mode Buck Charger with PD PHY, Dual-Channel LED Driver Integrated

SGM41620.pdf

The SGM41620 is a highly integrated charging solution for smartphone and tablet PC, which includes a 4A switched mode Buck charger, 8A switched cap fast charger, USB PD3.1 PHY (PPS) and dual-channel LED driver etc.

The 4A switched mode Buck charger is a NVDC system power path management device with integrated converter and power switches for use with single-cell Li-Ion or Li-polymer batteries. This highly integrated 4A device is capable of fast charging and supports a wide input voltage range suitable for smart phones, tablets and portable systems. I²C programming makes it a very flexible powering and charger design solution.

The 8A switched cap fast charger can be configured to the divider mode and bypass mode by I²C interface. It can charge single-cell Li-Ion or Li-polymer battery in a wide 3.2V to 11V input voltage range (VBUS) from smart wall adapters or wireless charger. A two-channel switched capacitor topology is used to reduce the required input capacitors, improve efficiency and minimize the output ripple. Necessary protection features for safe charging performance; including over-voltage protection (by Q_OVP external switch).

The dual-channel LED driver provides a tight solution of LED drive on the mobile phone or other portable device. The maximum source current for driving flash LED can reach 1.5A. When two rails LED work simultaneously, the maximum total source current can reach 2A. Control is done via an I²C-compatible interface. This includes adjustment of the flash and torch current levels, changing the flash timeout duration, and changing the current limit. Additionally, there are flag and status bits that indicate flash current timeout, LED short, device thermal shutdown, etc.

The SGM41620 also has a built-in 12-bit effective resolution ADC, which can be used to monitor the VBAT, VBATSNS (V_BATP - V_BATN), IBAT (charging current through BATFET Q4 for Buck charger), VAC, VBUS, VSYS, IBUS, TSBUS, TSBAT, and TDIE for better management of the charging process.

The SGM41620 integrates a stand-alone USB Type-C and Power Delivery (PD) controller providing cable plug and orientation detection. Upon cable attachment, the device performs cable detection according to the USB Type-C specification. It also communicates on the CC wire using the USB PD protocol.

The SGM41620 integrates a UFCS (Universal Fast Charging Specification) controller, by which host can communicate with the UFCS supported adaptor to perform the fast charging for the mobile devices.

FEATURES

8A Switched Cap Charger
- 96.5% Efficiency for 6A Fast Charge (VBAT = 4.4V)
- Support 2:1 and 1:1 Fast Charging
- Integrated VAC, VBUS, BAT, BATSNS OVP
- Integrated IBUS, Switching MOSFET Cycle-by-Cycle Current Protection
- CFLY Short, BAT Short, VBUS Short and VBUS In-Range Protection
High Efficiency, 1.5MHz, Synchronous Buck Charger
- 3.9V to 13.5V Operating Input Voltage Range
- 22V Absolute Maximum VBUS Voltage Rating
- Programmable Input Current Limit and Dynamic Power Management
- Programmable Input Voltage Limit (VINDPM) and
- VINDPM Tracking of Battery Voltage
- Switching MOSFET Cycle-by-Cycle Current Limit
- High Battery Discharge Efficiency with 15mΩ Switch
- Ship Mode, Wake-Up and Full System Reset
- Capability by Battery FET Control
- ±0.5% Charge Voltage Regulation (8mV/Step)
- ±5% Charge Current Regulation at 2A
- ±5.5% Input Current Regulation at 0.9A
- Fully Integrated Switches, Current Sense and
- Compensation
- Up to 3.25A OTG Output Current
- 20μA Ship Mode Low Battery Leakage Current
10 Channels 12-Bit ADC (VAC, VBUS, IBUS, VBAT, VBATSNS, VSYS, IBAT, TSBUS, TSBAT, TDIE)
Dual-Channel LED Driver
- Up to 1.5A Flash Current for Each Channel
- Up to 500mA Torch Current for Each Channel
- Can Work Simultaneously
BC1.2 & USB PD & UFCS PHY
- Support USB PD3.1 PPS except Fast Role Swap Function
- Cable Plug and Orientation Detection
- Auto Detect USB BC1.2, SDP, CDP, DCP and Non-Standard Adapters
- Integrated UFCS PHY

APPLICATIONS

Smartphone
Tablet PC

Ordering Information

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)
SGM41620YG/TR	Active	WLCSP-3.8×3.86-64B	64	YES	YES	YES	YES	MSL1	-40℃ to +85℃	View	View	1-24 units : $3.85/unit 25-99 units : $3.3/unit 100-249 units : $2.75/unit 250-499 units : $2.2/unit 500-999 units : $1.925/unit 1000-9999 units : $1.43/unit	3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 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.