SGM41517

Active

Fully Integrated Switch-Mode Charger with USB Compliance and USB OTG Support

SGM41517.pdf

The SGM41517 is a tiny, high-efficiency, USB supported switch-mode charger, which can be used to charge the single-cell Li-Ion and Li-polymer batteries in portable applications.

The SGM41517 has the I²C interface to program the charging parameters. It integrates a synchronous PWM controller, input and output current sensing, high- accuracy voltage and current regulation, power MOSFETs, and charge termination.

The SGM41517 charges the battery in three stages: short charging current, constant current charging, and constant voltage charging. The input current is automatically limited to the value set by host. The device terminates the charging based on the battery voltage and user selectable minimum current level. The charging safety timer provides the additional protection for the battery. During normal operation, if the battery voltage drops below the internal threshold, the IC will automatically restart the charging cycle and enter the sleep mode or the high-impedance mode when the input power is disconnected. The charging status can be read back to the host by the I²C interface. This device also features thermal regulation in which the charge current is reduced if the junction temperature exceeds 120℃.

For supporting the USB OTG device, the SGM41517 can boost the battery voltage to 5.05V by default at VBUS node.

The SGM41517 is available in a Green UTQFN-2×2-20L package.

FEATURES

4V to 13.2V Operating Input Voltage Range
19V Absolute Maximum Input Voltage Rating
Instant-On with No Battery
Maximum Power Tracking by Programmable Input Voltage Limit (VINDPM)
Bad Adapter Detection and Recognition
Safety Limit Register for Maximum Charge Voltage and Current Limiting
Integrated Input Current Sensing and Limiting
Integrated Power FETs for up to 2A Charge Current
Programmable Charging Parameters via I²C-Compatible Interface (up to 1Mbps):
- VINDPM Threshold
- Input Current Limit
- Fast-Charge/Termination Current
- Charge Regulation Voltage: 3.5V to 4.6V
- Termination Function
Integrated Charging Current Sensing Resistor
Operating at 1.5MHz/500kHz in Charger Mode, 1.5MHz in Boost Mode
Status Indication for Charging and Faults
USB Friendly Startup Sequence
JEITA Guideline Compliance
- Optional Charge Current at T1 - T2
- Optional Charge Prohibited when > T3
Boost Mode Range
- Battery Input Voltage Range: 3.2V to 4.6V
- 1.4A Output Current
High-Accuracy
- ±5% Input Current Regulation at 500mA
- ±0.4% Charge Voltage Regulation at T_J = +25℃
- ±0.5% Charge Voltage Regulation at T_J = 0℃ to +85℃
Safety
- Reverse Leakage Protection from BAT to VBUS
- Thermal Regulation and Thermal Shutdown
- VBUS/VBAT Over-Voltage Protection
Available in a Green UTQFN-2×2-20L Package

APPLICATIONS

Portable Audio Speaker
Mobile Phone
Wearables
EPOS

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)
SGM41517YUVQ20G/TR	Active	UTQFN-2×2-20L	20	YES	YES	YES	YES	MSL1	-40℃ to +85℃	View	View	1-24 units : $1.4/unit 25-99 units : $1.2/unit 100-249 units : $1/unit 250-499 units : $0.8/unit 500-999 units : $0.7/unit 1000-9999 units : $0.52/unit	3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 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.