C0098C0113C0050C0052C0048C0050C0048C0044 C0098C0113C0050C0052C0048C0050C0050C0044
C0098C0113C0050C0052C0048C0050C0051C0044 C0098C0113C0050C0052C0048C0050C0052
C0098C0113C0050C0052C0048C0050C0053C0044 C0098C0113C0050C0052C0048C0050C0054
SLUS549C − DECEMBER 2002 − REVISED AUGUST 2004
C0083C0073C0078C0071C0076C0069C0262C0067C0072C0073C0080C0044 C0076C0073C0262C0073C0079C0078 C0065C0078C0068 C0076C0073C0262C0080C0079C0076 C0067C0072C0065C0082C0071C0069C0082 C0073C0067 C0087C0073C0084C0072 C0065C0085C0084C0079C0078C0079C0077C0079C0085C0083
C0085C0083C0066C0262C0080C0079C0082C0084 C0065C0078C0068 C0065C0067C0262C0065C0068C0065C0080C0084C0069C0082 C0083C0085C0080C0080C0076C0089 C0077C0065C0078C0065C0071C0069C0077C0069C0078C0084 C0040C0098C0113C0084C0073C0078C0089C0116C0262C0073C0073C0041

FEATURES
C0068 Small 3 mm × 3 mm MLP Package
C0068 Charges and Powers Systems from Either AC
Adapter or USB With Autonomous
Power-Source Selection
C0068 Integrated USB Control With Selectable
100 mA and 500 mA Charge Rates
C0068 Ideal for Low-Dropout Charger Designs for
Single-Cell Li-Ion or Li-Pol Packs in Space
Limited Portable Applications
C0068 Integrated Power FET and Current Sensor for
Up to 1-A Charge Applications From AC
Adapter
C0068 Precharge Conditioning With Safety Timer
C0068 Power Good (AC Adapter Present) Status
Output
C0068 Optional Battery Temperature Monitoring
Before and During Charge
C0068 Automatic Sleep Mode for Low-Power
Consumption
APPLICATIONS
C0068 PDAs, MP3 Players
C0068 Digital Cameras
C0068 Internet Appliances
C0068 Smartphones
DESCRIPTION
The bqTINY-II series are highly integrated and flexible
Li-Ion linear charge and system power management
devices targeted at space limited charger applications.
The bqTINY-II series offer integrated USB-port and
ac-adapter supply management with autonomous
power-source selection, power FET and current
sensor, high-accuracy current and voltage regulation,
charge status, and charge termination, in a single
monolithic device.
The bqTINY-II automatically selects the USB-Port or
the ac-adapter as the power source for the system. In
the USB configuration, the host can select from the two
preset charge rates of 100 mA and 500 mA. In the
ac−adapter configuration an external resistor sets the
magnitude of the system or charge current.
The bqTINY-II charges the battery in three phases:
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
internal charge timer provides a backup safety for
charge termination. The bqTINY-II automatically re-
starts the charge if the battery voltage falls below an
internal threshold. The bqTINY-II automatically enters
sleep mode when both supplies are removed.
bqTINY is a trademark of Texas Instruments Incorporated.
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046 C0080C0114C0111C0100C0117C0099C0116C0115
C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115 C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046
C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101 C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
www.ti.com
Copyright  2002, Texas Instruments Incorporated
1
2
3
4
10
9
8
5
AC
USB
OUT
VSS
STAT1
STAT2 7
6
TS
ISET2
ISET1
bq24020DRC
+
BATTERY PACKPACK+
PACK−
SYSTEM
SYSTEM
INTERFACE
VDC
GND
VBUS
GND
D+
D −
USB
PORT
AC
ADAPTER
UDG−02184
R
SET
CE