BQ24232H_15 Datasheet, PDF (3/42 Pages) Texas Instruments – bq2423xx USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC

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bq24230H, bq24232H
SLUSBI8A – JANUARY 2014 – REVISED DECEMBER 2014
5 Description (Continued)
The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge
phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the
internal temperature threshold is exceeded.
The charger power stage and charge current sense functions are fully integrated. The charger function has high-
accuracy current and voltage regulation loops, charge status display, and charge termination. The input current
limit and charge current are programmable using external resistors.
6 Device Comparison Table
PART NUMBER^{(1) (2)}
bq24230HRGTR ⁽³⁾
bq24230HRGTT ⁽³⁾
bq24232HRGTR
bq24232HRGTT
V_OVP
6.6 V
6.6 V
10.5 V
10.5 V
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
7 Pin Configuration and Functions
RGT Package
16 Pins
Top View
TS
BAT
BAT
CE
16 15 14 13
1
12
2
11
bq24230H
3
10
4
9
5 678
ILIM
OUT
OUT
CHG
TS
BAT
BAT
CE
16 15 14 13
1
12
2
11
bq24232H
3
10
4
9
5 678
ILIM
OUT
OUT
CHG
NAME
BAT
CE
CHG
PIN
NUMBER
'230H '232H
2,3 2, 3
4
4
9
9
Pin Functions
I/O
DESCRIPTION
I/O
Charger Power Stage Output and Battery Voltage Sense Input. Connect BAT to the positive terminal of the battery.
Bypass BAT to VSS with a 4.7-μF to 47-μF ceramic capacitor.
Charge Enable Active-Low Input. Connect CE to a high logic level to place the battery charger in standby mode. In
I
standby mode, OUT is active and battery supplement mode is still available. Connect CE to a low logic level to enable
the battery charger. CE is internally pulled down with approximately 285 kΩ. Do not leave CE unconnected to ensure
proper operation.
O
Open-Drain Charging Status Indication Output. CHG pulls to VSS when the battery is charging. CHG is high impedance
when charging is complete and when charger is disabled.
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