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CXLB73211-way components. The device includes a power transistor inside, and no external current detection resistor and blocking diode are required during application. CXLB73211 requires only a few peripheral components and complies with USB bus technical specifications. It is very suitable for portable applications. The thermal modulation circuit can control the chip temperature within a safe range when the power consumption of the device is relatively large or the ambient temperature is relatively high. The internal fixed constant voltage charging voltage is 4.2V, which can also be adjusted by an external resistor. The charging current is set by an external resistor. When the input voltage (AC adapter or USB power supply) is powered down, CXLB73211 automatically enters the sleep mode with low power consumption, and the current consumption of the battery is less than 0.1 μA. When the battery voltage is higher than the input voltage, the built-in power MOSFETs are automatically turned off. Other functions include low input voltage latching, automatic recharging, battery temperature monitoring, and indication of charging status/end of charging status. CXLB73211 the static power consumption of the chip in the off state can be less than 20uA by using the enable pin to turn off charging. CXLB73211 uses 8-pin small shape package ESOP8 with enhanced heat dissipation.

   Product FeaturesReturn to TOPt2i嘉泰姆

 programmable charging current up to 1.0At2i嘉泰姆
No external MOSFETs, sensing resistor and blocking diode are required.t2i嘉泰姆
Small size enables full linear charge management of lithium ion batteriest2i嘉泰姆
 constant current/constant voltage operation and heat adjustment make battery management most effective without the risk of excessive heatt2i嘉泰姆
Manage single-chip lithium ion batteries from USB interfacet2i嘉泰姆
Charging current output monitoringt2i嘉泰姆
Charge status indicator and full status indicatort2i嘉泰姆
// 1/10 charging current terminationt2i嘉泰姆
Automatic rechargingt2i嘉泰姆
// Provide 40 A current when it stops working.t2i嘉泰姆
 2.9V trickle charging threshold voltaget2i嘉泰姆
Lightning soft start limiting surge currentt2i嘉泰姆
 when VIN is removed, IC does not consume battery energy.t2i嘉泰姆
ESOP8 and customized packagingt2i嘉泰姆

   Application ScopeReturn to TOPt2i嘉泰姆

Mobile phonet2i嘉泰姆
Digital camerat2i嘉泰姆
 MP4 playert2i嘉泰姆
Bluetooth applicationt2i嘉泰姆
 electronic dictionaryt2i嘉泰姆

   Technical Specification (product PDF)Return to TOP t2i嘉泰姆

For detailed PDF specifications, please scan WeChat and contact us. You can also get free samples and technical support.!t2i嘉泰姆

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   Product packaging diagramReturn to TOPt2i嘉泰姆

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TEMP TEMP (pin 1): connect the TEMP pin to the output of the NTC sensor of the battery. If the voltage of the TEMP pin is less than 32% of the input voltage or more than% of the input voltage, it means that the battery temperature is too low or too high, then the charging will be suspended. If TEMP is between 32% and% of the input voltage, the battery is faulty.t2i嘉泰姆
The state will be cleared and charging will continue.t2i嘉泰姆
Battery ISET (pin 2): charging current programming, charging current monitoring and shutdown terminal. The charging current is controlled by a ground-connected resistor with an accuracy of 1%. When the charging current is constant, this port provides a voltage of 1v. In all states, the port voltage can be measured by the following formula.t2i嘉泰姆
IBAT = (VISET/RISET) ×1000t2i嘉泰姆
The ISET Port can also be used to turn off the charger. Separate the programming resistor from the same terminal, and the internal chip can pull up the ISET port voltage through the pull-up 3μA current source. When the limit shutdown voltage value of 1.21V is reached, the device enters the stop working state, the charging ends, and the input current drops to 25μa. The pinch-off voltage of this port is about 2.4V. By combining the ISET resistor with the ground, the Charger returns to the normal state.t2i嘉泰姆
Platinum GND (pin 3): ground terminal, EXPOSED pin also needs to be connected to pin 3.t2i嘉泰姆
VIN (pin 4): provides positive voltage input. The VIN pin must have a bypass capacitor of at least 1μF. When VIN drops to within 30mV of BAT terminal voltage, charging is stopped. At this time, the consumption current of BAT port is less than 0.1uA.t2i嘉泰姆
Battery BAT (pin 5): connect the positive end of the battery to this pin. When full, if VIN is not removed, BAT consumes about 2uA. During charging, if VIN is removed, the current consumption of BAT pin is less than 0.1uA.t2i嘉泰姆
Tip DONE (pin 6): When the charging ends, the DONE pin is pulled low by the internal switch, indicating that the charging has ended; Otherwise, the DONE pin is in the high resistance state.t2i嘉泰姆
 CHRG (pin 7): When the charger charges the battery, the CHRG pin is pulled low by the internal switch, indicating that the charging is in progress; Otherwise, the CHRG pin is in the high resistance state.t2i嘉泰姆
CE (pin 8): This pin can control whether the chip is charged, connect to the high level to enable charging, turn off charging at the low level, and turn off the static power consumption of the chip after charging to 20uAt2i嘉泰姆
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   Circuit Schematic diagramReturn to TOPt2i嘉泰姆

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  Relevant chip selection guideReturn to TOP         More products.....t2i嘉泰姆