BQ24030-Q1 Datasheet, PDF (10/34 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
FUNCTIONAL DESCRIPTION
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.
Pre-Conditioning
Phase
Current Regulation Phase
Voltage Regulation and Charge Termination Phase
Regulation
Voltage
Regulation
Current
Minimum
Charge
Voltage
Charge
Voltage
Charge
Complete
Pre−
Conditioning
and Term
Detect
AC Adapter
VDC
GND
D+
D–
VBUS
GND
USB Port
Charge
Current
Figure 1. Charge Profile
4 AC
10 µF
10 µF
R_TMR
20 USB
14 TMR
7 ISET2
LDO 1
OUT 15
OUT 16
OUT 17
BAT 5
BAT 6
2 STAT1
3 STAT2
19 _USBPG
18 _ACPG
TS 12
DPPM ¹³
9 _CE
ISET1 10
8 _PSEL
VSS 11
10 µF
10 µF
Battery Pack
PACK+
1 µF
+
PACK–
TEMP
R_SET
R_DPPM
Control and
Status Signals
Figure 2. Typical Application Circuit
UDG−04087
System
10
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