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SGM41524

量产

Compact Switch Li+/Poly Battery Charger Safe and Reliable Charging

Preview Image
Preview Image

The SGM41524 is a compact and efficient Lithium ion (Li+) or Lithium ion polymer (Li+/polymer) battery charger. It can provide power and charge the single cell battery of a system typically found in compact portable device. An internal switching buck converter regulates the supply input for charging the battery and powering the system even if the battery is absent. The converter can also operate as a simple pass-through switch with no switching if the load and input voltages are close.

A typical application circuit is shown in Figure 2. The SGM41524 features resistor programmable constant current and constant voltage charging capability plus a charge limiting timer and operates in compliance with the BAJ/JEITA safety guide. An NTC (β = 3950K) can be used for battery temperature sensing on top of the internal junction temperature monitoring. The IND status output pin can be connected to LEDs to indicate the operating conditions, such as power input ok (POK), in charging (CHG), VIN over-voltage (POK and CHG alternate blinking) and no power/disabled (OFF). Voltage fold-back on the output is provided to power the system from the input while retaining battery charge and preventing overcharge. Input under-voltage regulation is implemented by reducing the load current such that VIN stays above a minimum when the source is weak. Similarly, the die temperature can be regulated and limited by reducing output power to avoid device or the circuit board being overheated.

These features simplify the system design and ensure safe and reliable operation as well as improved user experience.

The SGM41524 is delivered in a Green TDFN-2×3-8BL package. The device operates in -40 to +85 with two thermal regulation options for +55 or for +115.

More
特性
  • Constant Current, Constant Voltage (CCCV) Charging with Floating Time-Out Timer

  • Constant Current Pre-charge

  • Maximum 2.3A Charging for 4.2V to 4.5V Battery

  • 1.34MHz Switching Frequency

  • Programmable Charge Voltage and Current

  • 4.15V Input Voltage Regulation

  • Output Voltage Fold-Back Charge Retaining

  • Thermal Regulation Options

    SGM41524: +115

    SGM41524C: +55

  • Typical Peak Efficiency of 92% at 1.5A, VIN = 5V

  • -40 to +85 Operating Temperature Range

  • Available in a Green TDFN-2×3-8BL Package

应用

Powering and Charge Control of Systems with 500mAh to 6000mAh Li+/Polymer Batteries

订购信息
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)
SGM41524CYTDC8G/TR
量产
TDFN-2×3-8BL
8
Yes
YesYesYesMSL1
-40℃ to +85℃
查看
查看
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 : 35 days
100K-999K : 66 days
1000K and above : 84 days
SGM41524YTDC8G/TR
量产
TDFN-2×3-8BL
8
Yes
YesYesYesMSL1
-40℃ to +85℃
查看
查看
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 : 35 days
100K-999K : 66 days
1000K and above : 84 days

* 价格仅供参考。请联系我们的经销商获取正式报价。

** 交货时间仅供参考,可能会根据不同情况而发生变化。

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圣邦微电子 (SGMICRO) 是一家综合性的高性能和高可靠性模拟及混合信号处理和系统电源管理集成电路供应商,为工业自动化、新能源、汽车、通信、计算机、消费电子和医疗设备等应用提供各类模拟信号调理和电源创新解决方案。
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