APW7262 has high accuracy regulation of input current, charge current and charge voltage. It equipped with charge termination, and charge status monitoring for battery detection.

FeaturesJsH嘉泰姆

Charge Faster Than Linear ChargerJsH嘉泰姆

3MHz with 0% to 99.5% Duty Cycle SynchronousJsH嘉泰姆

Switch-Mode Charger with 1.5A Integrated N-JsH嘉泰姆

MOSFETsJsH嘉泰姆

4V-6V Input Operating RangeJsH嘉泰姆

20V Absolute Maximum Input VoltageJsH嘉泰姆

SafetyJsH嘉泰姆

-Reverse leakage protection to prevent batteryJsH嘉泰姆

drainageJsH嘉泰姆

-Thermal regulation and protectionJsH嘉泰姆

-Input/output over-voltage protectionJsH嘉泰姆

-Cycle-by-cycle current limitJsH嘉泰姆

AccuracyJsH嘉泰姆

-+1% charge voltage regulation (0 to 85oC)JsH嘉泰姆

-+5% charge current regulationJsH嘉泰姆

-+5% input current regulation (100mA andJsH嘉泰姆

500mA)JsH嘉泰姆

Built-In Input Current Sensing and LimitingJsH嘉泰姆

Automatic ChargingJsH嘉泰姆

Programmable Through High-Speed I2CJsH嘉泰姆

Interface(3.4Mb/s)JsH嘉泰姆

-Input Current LimitJsH嘉泰姆

-Fast-Charge and Termination CurrentJsH嘉泰姆

-Charge Regulation VoltageJsH嘉泰姆

-Weak Battery Voltage ThresholdJsH嘉泰姆

-VIN DPM ThresholdJsH嘉泰姆

-Termination Enable/DisableJsH嘉泰姆

-OTG Enable/DisableJsH嘉泰姆

-Reset All Parameter ControlJsH嘉泰姆

-Safety Timer with Reset ControlJsH嘉泰姆

5V, 500mA Boost Mode for USB OTG for 2.5V toJsH嘉泰姆

4.5V Battery InputJsH嘉泰姆

Available in 1.7mmx2.1mm WLCSP-20 andJsH嘉泰姆

TQFN4x4-20A PackagesJsH嘉泰姆

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General DescriptionJsH嘉泰姆

The APW7262 combine switch-mode battery charger andJsH嘉泰姆

a boost regulator with fixed 3MHz switching frequency,JsH嘉泰姆

which drives two integrated N-channel power MOSFETs.JsH嘉泰姆

In battery charging, the high-efficiency step-down DC/DCJsH嘉泰姆

converter is capable of delivering 1.5A output current overJsH嘉泰姆

a wide input voltage range from 4V to 6V for APW7262, theJsH嘉泰姆

step-down DC/DC converter is ideally suited for portableJsH嘉泰姆

electronic devices that are powered from 1-cell Li-ionJsH嘉泰姆

battery. The Charging parameters and operating modesJsH嘉泰姆

can be programmed through an I 2C interface. TheJsH嘉泰姆

APW7262 has high accuracy regulation of input current,JsH嘉泰姆

charge current and charge voltage. It equipped with chargeJsH嘉泰姆

termination, and charge status monitoring for batteryJsH嘉泰姆

detection.JsH嘉泰姆

The APW7262 charge the battery in three phases:JsH嘉泰姆

conditioning, constant current and constant voltage. TheJsH嘉泰姆

APW7262 features Dynamic Power Management (DPM)JsH嘉泰姆

mode to accomplish input power limiting. The input cur-JsH嘉泰姆

rent is limited to the value set by the I2C host. This featureJsH嘉泰姆

reduces battery charge current when the input power limitJsH嘉泰姆

is reached to avoid overloading the AC adapter when sup-JsH嘉泰姆

plying the load and the battery charger simultaneously.JsH嘉泰姆

The charge termination is based on battery voltage, aJsH嘉泰姆

programmed minimum current level and charge currentJsH嘉泰姆

termination bit set by the I2C host.JsH嘉泰姆

If the battery voltage falls below an internal threshold, theJsH嘉泰姆

APW7262 automatically restarts the charge cycle, andJsH嘉泰姆

when the input voltage falls below the battery voltage, itJsH嘉泰姆

will enter a low-quiescent current sleep mode. TheJsH嘉泰姆

APW7262 supports the thermal regulation and over tem-JsH嘉泰姆

perature protection to maintain the junction temperatureJsH嘉泰姆

of 120oC by reducing charge current.JsH嘉泰姆

The APW7262 can operate as a boost regulator. To sup-JsH嘉泰姆

port USB OTG device, APW7262 can provide VBUSJsH嘉泰姆

(5.05V) by boosting the battery voltage.JsH嘉泰姆

The APW7262 is available in1.7mmx2.1mm WLCSP-20JsH嘉泰姆

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and TQFN4x4-20A packages.JsH嘉泰姆

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