BQ24232H Datasheet, PDF (3/37 Pages) Texas Instruments – USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC

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bq24230H
bq24232H
SLUSBI8 – JANUARY 2014
NAME
Terminal
NUMBER
'230H '232H
TMR
14
14
TD
15
-
ITERM
-
15
ISET
16
16
Thermal
Pad
Terminal Functions (continued)
I/O
DESCRIPTION
Timer Programming Input. TMR controls the precharge and fast-charge safety timers. Connect TMR to VSS to disable all
I safety timers. Connect a 18-kΩ to 72-kΩ resistor between TMR and VSS to program the timers a desired length. Leave
TMR unconnected to set the timers to the 5-hour fast charge and 30-minute precharge default timer values.
Termination Dsable Input. Connect TD high to disable charger termination. Connect TD to VSS to enable charger
I
termination. TD is checked during start-up only and cannot be changed during operation. See the TD section in this data
sheet for a description of the behavior when termination is disabled. TD is internally pulled down to VSS with ~285 kΩ.
Do not leave TD unconnected to ensure proper operation.
I
Termination Current Programming Input. Connect a 0-Ω to 15-kΩ resistor from ITERM to VSS to program the termination
current. Leave ITERM unconnected to set the termination current to the internal default 10% threshold.
Fast-Charge Current Programming Input. Connect a 3-kΩ to 36-kΩ resistor from ISET to VSS to program the fast-charge
I/O
current level. Charging is disabled if ISET is left unconnected. While charging, the voltage at ISET reflects the actual
charging current and can be used to monitor charge current. See the CHARGE CURRENT TRANSLATOR section for
more details.
An internal electrical connection exists between the exposed thermal pad and the VSS pin of the device. The thermal
– pad must be connected to the same potential as the VSS pin on the printed-circuit board. Do not use the thermal pad as
the primary ground input for the device. The VSS pin must be connected to ground at all times.
Table 1. EN1/EN2 Settings
EN2
EN1 Maximum input current into IN pin
0
0
100 mA. USB100 mode
0
1
500 mA. USB500 mode
1
0
Set by an external resistor from ILIM to VSS
1
1
Standby (USB suspend mode)
PART NUMBER^{(1) (2)}
bq24230HRGTR ⁽³⁾
bq24230HRGTT ⁽³⁾
bq24232HRGTR
bq24232HRGTT
V_OVP
6.6 V
6.6 V
10.5 V
10.5 V
ORDERING INFORMATION
V_OUT(REG)
4.5 V
4.5 V
4.5 V
4.5 V
V_DPM
V_O(REG) – 100 mV
V_O(REG) – 100 mV
V_O(REG) – 100 mV
V_O(REG) – 100 mV
OPTIONAL
FUNCTION
TD
TD
ITERM
ITERM
MARKING
24230H
24230H
24232H
24232H
(1) The RGT package is available in the following options:
R - taped and reeled in quantities of 3000 devices per reel.
T - taped and reeled in quantities of 250 devices per reel.
(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) Product Preview
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