Datasheet

Pre-Conditioning
Phase Current Regulation Phase Voltage Regulation and Charge Termination Phase
Regulation
Voltage
Regulation
Current
Minimum
Charge
Voltage
Pre−
Conditioning
and Term
Detect
Charge
Current
Charge
Complete
UDG−04087
Charge
Voltage
4
20
14
7
5
12
13
3
AC
USB
LDO
STAT2
TMR
ISET2
10
11
TS
PACK+
PACK−
System
VDC
GND
VBUS
GND
D+
D −
USBPort
AC Adapter
+
2 STAT1
18
19
8
PSEL
9
CE
1
OUT
15
OUT
16
OUT
17
BAT
6BAT
DPPM
ISET1
VSS
TEMP
Battery P ack
10 µF
R
TMR
1 µF
R
SET
USBPG
ACPG
R
DPPM
Controland
Status Signals
bq24030/31/32A/35
10 µF
10 µF
10 µF
bq24030, bq24031
bq24032A, bq24035, bq24038
www.ti.com ............................................................................................................................................... SLUS618H –AUGUST 2004–REVISED OCTOBER 2009
FUNCTIONAL DESCRIPTIONS
CHARGE CONTROL
The bqTINY III-series supports a precision Li-ion or Li-polymer charging system suitable for single-cell portable
devices. See a typical charge profile, application circuit, and an operational flow chart in Figure 1 through
Figure 4, respectively.
Figure 1. Charge Profile
Figure 2. Typical Application Circuit
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Product Folder Link(s): bq24030, bq24031 bq24032A, bq24035, bq24038