鈥?/div>
Li-Ion Or Li-Pol Charge Management and
Synchronous DC-DC Power Conversion In a
Single Chip
Optimized for Powering Bluetooth Headsets
and Accessories
Charges and Powers the System from Either
the AC Adapter or USB with Autonomous
Power Source Selection
Integrated USB Charge Control with
Selectable 100 mA and 500 mA Charge Rates
Integrated Power FET and Current Sensor for
Up to 500 mA Charge Applications AND
100 mA 1.8 V DC-DC Controller with
Integrated FET
Reverse Leakage Protection Prevents Battery
Drainage
Automatic Power Save Mode For High
Efficiency at Low Current, or Forced PWM for
Frequency Sensitive Applications
DESCRIPTION
The bqHYBRID鈩?series are highly integrated charge
and power management devices targeted at
space-limited bluetooth applications. The bqHYBRID
series offer integrated power FET and current sensor
for charge control, reverse blocking protection, high
accuracy current and voltage regulation, charge
status, charge termination, and a highly efficient and
low-power dc-dc converter in a small package.
The bqHYBRID 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 feature
for charge termination. The bqHYBRID automatically
re-starts the charge if the battery voltage falls below
an internal threshold. The bqHYBRID automatically
enters sleep mode when V
CC
supply is removed.
The integrated low-power high-efficiency dc-dc con-
verter is designed to operate directly from a
single-cell Li-Ion or Li-Pol battery pack. The output
voltage is either adjustable from 0.7 V to VBAT
(bq25010), fixed at 3.3 V (bq25011), or fixed at 1.8 V
(bq25012), and is capable of delivering up to 150-mA
of load current. The dc-dc converter operates at a
synchronized 1 MHz switching frequency allowing for
the use of small inductors.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
APPLICATIONS
鈥?/div>
鈥?/div>
鈥?/div>
Bluetooth Headsets
Bluetooth Accessories
Low-Power Handheld Devices
TYPICAL APPLICATION
Bluetooth Chipset
AC Adapter
VDC
GND
5
3
9
D+
D鈭?/div>
VBUS
18
6
7
8
GND
USB Port
4
bq25012RHL
AC
VSS
VSS
VSS
USB
STAT1
STAT2
EN
PG 14
SW 19
FB
2
Battery
Pack
PACK+
BAT/OUT 16
+
ISET1
ISET2
FPWM
12
13
20
UDG鈭?4070
1.8 V
DSP
CE 15
BAT/OUT 17
Processor
R
SET
PACK鈭?/div>
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.
bqHYBRID is a trademark of Benchmark.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2004, Texas Instruments Incorporated
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