BQ24030-Q1 Datasheet, PDF (2/34 Pages) Texas Instruments – SINGLE-CHIP CHARGE AND SYSTEM POWER-PATH MANAGEMENT IC

bq24030-Q1
bq24031-Q1
SLUS793B – APRIL 2008 – REVISED OCTOBER 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 power select pin (PSEL) defines which input source is to be used first (primary source is either AC or USB).
If the primary source is not available, then the IC automatically switches over to the secondary source (if
available) or the battery as the last option. If the PSEL is set low, the USB input is selected first and (if not
available) the AC line is selected (if available) but programmed to a USB input limiting rate (100 mA/500 mA
max). This feature allows the use of one input connector, where the host programs the PSEL pin according to
what source is connected (AC adapter or USB port).
The ISET1 pin programs the battery's fast-charge constant current level with a resistor. During normal AC
operation, the input supply provides power to both the OUT (system) and BAT pins. For peak or excessive loads
(typically when operating from the USB power, PSEL = low) that would cause the input source to enter current
limit (or Q3 – USB FET limiting current) and its source and system voltage (OUT pin) to drop, the dynamic
power-path management (DPPM) feature reduces the charging current attempting to prevent any further drop in
system voltage. This feature allows the selection of a lower current rated adapter based on the average load
(I_SYS-AVG + I_BAT-PGM), rather than a high peak transient load.
T_A
–40°C to 85°C
BATTERY
VOLTAGE (V)
4.2
4.1
ORDERING INFORMATION^{(1) (2)}
OUT PIN FOR AC
INPUT CONDITIONS
(3)
PACKAGE ⁽⁴⁾
Regulated to 6 V⁽⁵⁾
Regulated to 6 V⁽⁵⁾
QFN – RHL
Reel of 3000
ORDERABLE
PART NUMBER
BQ24030IRHLRQ1
BQ24031IRHLRQ1
TOP-SIDE
MARKING
BQ24030
BQ24031
(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) 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.
(3) When power is applied via the USB pin (PSEL = low), the input voltage is switched straight through to the OUT pin, unless the USB
input current limit is active, and then the OUT pin voltage typically drops to the DPPM-OUT threshold or battery voltage (whichever is
higher).
(4) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(5) If AC < V_O(OUT-REG), the AC is connected to the OUT pin by a P-FET (Q1).
2
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