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SGM41562B

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500mA Single-Cell Li-Ion Battery Charger with Power Path Management

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The SGM41562A and SGM41562B are highly integrated, I2C programmable, single-cell Li-Ion or Li-polymer battery chargers with system power path management. They are specifically designed for portable applications requiring minimum board space and small external components. The charging profile includes pre-charge, constant-current and constant-voltage phases. Several safety and protection features are included such as built-in safe charge timer to set maximum duration of charge and pre-charge, input voltage and current monitoring, internal (junction) and external (battery) temperature monitoring, input current limiting and load current limiting. SGM41562A can charge with a wide input voltage range of up to 18V compared to the SGM41562B which has 5.75V charging range, but the rest of their functions are the same.

The SGM41562A/B has 3 power ports: input power port (IN), battery port (BAT) and system or load port (SYS). The system is powered from the input whenever it is available. Input is typically a USB power source. If the input source is weak or removed, power source for the system will automatically switch to the battery. The voltage and currents from input and battery as power sources are continuously monitored to prevent battery damage due to excessive currents or over-discharge.

I2C serial interface is used to program the device functions and parameters or to read its status. 12 read/write or read only 8-bit registers (REG00 to REG0B) are accessible. A watchdog protection feature is also included. If this feature is enabled and there is no in time read/write activity or signal from the host, the device will reset the charging parameters to their defaults and recycles power to the system (turn off/on) that may reset the host.

The SGM41562A is capable of charging with input voltages as high as 18V but with higher input voltages, the chip temperature can easily rise up and thermal protection may stop charging if proper cooling is not considered. The SGM41562B goes into voltage protection state if VIN > 6V. The input changes are continuously monitored and a system power recycle (SYS) may occur if the system does not response to the input toggles.

The SGM41562A/B is available in a Green WLCSP-1.52×1.52-9B package. Device functionality and protection features are assured in the ambient temperature range from -40 to +125. Charging parameters are guaranteed in 0 to +55.

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FEATURES
  • Fully Autonomous Charger for Single-Cell Li-Ion and Li-Polymer Battery

  • ±0.6% Charging Voltage Accuracy

  • 21V Maximum Input Voltage Rating with Over-Voltage Protection

  • 5.75V Maximum Operating Voltage

  • I2C Interface for Parameters Setting/Status Reporting

  • Fully Integrated Power Switches

  • No External Blocking Diode Required

  • Built-in Robust Charge Protections Including Battery Temperature Monitor and Programmable Timer

  • Battery or PCB Over-Temperature Protection

  • Built-in Battery Disconnection Function

  • System Reset Function

  • Thermal Limit Regulation on Chip

  • Available in a Green WLCSP-1.52×1.52-9B Package

APPLICATIONS

Wearable Devices

IoT Gadgets

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM41562BXG/TR
Active
WLCSP-1.52×1.52-9B
9
Yes
YesYesYesMSL1
-40℃ to +125℃
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1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 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.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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