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BQ24705RGERTI Pb-freeN/a21935avaiHost-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125
BQ24705RGERG4TEXASN/a17824avaiHost-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125
BQ24705RGETBB/TIN/a6557avaiHost-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125


BQ24705RGER ,Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125........ SLUS779B–DECEMBER 2007–REVISED MARCH 2009ADAPTER + SYSTEMRC7R10 ACC6P P0.01 Ω2 Ω 10 µFADAP ..
BQ24705RGERG4 ,Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125features reducebattery charge current when the input power limit is reached to avoid overloading th ..
BQ24705RGET ,Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125FEATURES APPLICATIONS• Notebook and Ultra-Mobile Computers2• NMOS-NMOS Synchronous Buck Converterwi ..
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BQ24705RGER-BQ24705RGERG4-BQ24705RGET
Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect 24-VQFN 0 to 125
1FEATURES
DESCRIPTION

ACP
PVCC
ACDET
ACSET
DPMDET
CELLS
SRP
SRN
BAT
CHGEN
ACN
SRSET 22 21 20 8 9 1011 12
AGND
VREF
ADJ
ACGOOD
ISYNSET
IADAPT
BTST HIDR REGN LODR
PGND
bq24705
QFN-24
TOP VIEW
bq24705
www.ti.com...............................................................................................................................................
SLUS779B–DECEMBER 2007–REVISED MARCH 2009
600-kHz, Host-Controlled Multi-Cell Battery
Notebook and Ultra-Mobile Computers NMOS-NMOS Buck Converter
with 600 kHz and >95% Efficiency
Portable Data-Capture Terminals Portable Printers 30-ns Minimum Dead-time and 99.5%
Maximum Effective Cycle
Medical Diagnostics Equipment Battery Bay Chargers High-Accuracy and Current Regulation Battery Back-Up Systems– ±0.5% Charge Accuracy ±3% Charge Accuracy ±3% Adapter Accuracy
The bq24705 is a high-efficiency, synchronous– ±2% Input Sense Amp Accuracy battery charger with integrated compensation,• Integration offering low component count for space-limited Internal Loop multi-chemistry battery charging applications. Charge
current and voltage programming allows high– Internal Soft-Start regulation accuracies, and can be either hardwired• Safety with resistors, or programmed by the system Input Overvoltage Protection (OVP) power-management microcontroller usinga DACor
GPIOs.– Dynamic (DPM) with
Status Indicator
The bq24705 charges two, three,or four series Li+
cells, supporting upto8Aof charge current, andis• Supports Two,or Four Li+ Cells
availableina 24-pin, 4x4-mm thin QFN package.• 5–24V AC/DC-Adapter Operating Range Analog Inputs Programming
via Resistors Host Control Charge Voltage V/cell) Charge Currentto8A, with 10-mΩ
Sense Resistor) Adapter Current (DPM)
Status and Monitoring Outputs AC/DC Adapter with Programmable
Voltage Threshold DPM Loop (DPMDET) Current Drawn Input Source
Supports Any Chemistry: Li+, NiCd,
NiMH, Lead
Charge Enable 10-μA Off-State Current
Figure QFN,
24-pin, 4x4-mm Packagebe aware thatan availability, standard warranty, and usein applicationsof Texas
Not Recommended for New Designs
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