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BQ25046DQCR
Generation 1 1.1A, Single-Input 5-V Power Supply IC for Contactless Charging Applications 10-WSON -40 to 85
ISET
OUT
EN1
EN1
EN2ISET_SCALE
VIN_DIV
Discrete Rectifier
COMM
Resonant
CapsFm
5-V
Output
DISABLE_
COMM_ILIM
bq25046
www.ti.com SLUSA83 –SEPTEMBER 2010
1.1A, Single-Input 5-V Power Supply IC for Wireless Power Applications
Checkfor Samples: bq25046
1FEATURES
DESCRIPTION• 30V Input Rating, with 15V Over-Voltage
Protection (OVP) Threshold The bq25046isa highly integrated linear power
supplyIC targetedat both wired and wireless power
• Integrated Charge Current Sense for Wirelessapplications. With an accurate 5-V regulated
Power Transfer Efficiency Monitoringand integrated 3.3-V LDO, the bq25046is an ideal
• 3.3V, 15mA integrated Low Dropout Linear solution for wireless power supply solutions5
Regulator (VDD3.3) Supplies Powerto W.
MSP430BQ1010 DirectlyThe bq25046 integrates several functions
• 2% Output Voltage Regulation enablea wireless charging solution within
• Pin Selectable 100mA and 400mA Current area and low component count. These include
Limit Enables Robust Communicationin 3.3-V LDO which drivesan MSP430BQ1010
Wireless Power Systemsat any Output controller, high-accuracy current sense for calculating
Current Level receiver-side power usage, 100mA/400mA
limits enable robust communicationatall load
• Soft-Start Featureto Reduce Inrush Current levels, and integrated pass FET acts
• Status Indication– Power Good (PG) and disconnect switch and 5-V regulator to
Output Enabled (CHG) downstream circuitry.In addition, the bq25046
absolute maximum input voltageof 30V and
• Availablein Small 2mm× 3mm DFN-10thresholdof 15 V, which enables safe and
Packageoperationin inductive power transfer systems
use either resistiveor capacitive load modulation.
APPLICATIONS Wireless Power Applications Smart Phones PDAs MP3 Players Low-Power Handheld Devices
APPLICATION SCHEMATIC
