Datasheet

bq24070
bq24071
SLUS694F –MARCH 2006–REVISED DECEMBER 2009 www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DESCRIPTION (CONTINUED)
The MODE pin selects the priority of the input sources. If an input source is not available, then the battery is
selected as the source. With the MODE pin high, the bq24070/1 attempts to charge from the input at the charge
rate set by ISET1 pin. With the MODE pin low, the bq24070/1 defaults to USB charging at the charge rate. This
feature allows the use of a single connector (mini-USB cable), where the host programs the MODE pin according
to the source that is connected (AC adaptor or USB port). Table 1 summarizes the MODE pin function.
Table 1. Power Source Selection Function Summary
MODE STATE AC MAXIMUM SYSTEM USB BOOT-UP
ADAPTER CHARGE RATE
(1)
POWER FEATURE
SOURCE
Low Present ISET2 USB Enabled
Absent N/A Battery Disabled
High Present ISET1 AC Disabled
Absent N/A Battery Disabled
(1) Battery charge rate is always set by ISET1, but may be reduced by a limited input source (ISET2 USB mode) and I
OUT
system load.
ORDERING INFORMATION
(1)
BATTERY PART PACKAGE
T
A
OUT PIN STATUS
VOLTAGE (V) NUMBER
(2) (3)
MARKING
4.2 Regulated to 4.4 V
(4)
bq24070RHLR Production BRQ
4.2 Regulated to 4.4 V
(4)
bq24070RHLT Production BRQ
–40°C to 125°C
4.2 Regulated to 6 V bq24071RHLR Production BTR
4.2 Regulated to 6 V bq24071RHLT Production BTR
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com.
(2) The RHL package is available in the following options:
R - taped and reeled in quantities of 3,000 devices per reel.
T - taped and reeled in quantities of 250 devices per reel.
(3) This product is RoHS compatible, including a lead concentration that does not exceed 0.1% of total product weight, and is suitable for
use in specified lead-free soldering processes. In addition, this product uses package materials that do not contain halogens, including
bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(4) If AC < V
O(OUT-REG)
, the AC is connected to the OUT pin by a P-FET, (Q1).
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