Datasheet

RAC
0.010 W
Q1 (ACFET)
N
P
ACN
ACP
ISET2
ACSET
VREF
CE
VFB
TS
VCC
HIDRV
N
PH
BTST
REGN
LODRV
GND
SRP
SRN
P
PACK+
PACK-
SYSTEM
ADAPTER+
ADAPTER-
C4
0.1 µF
C2
0.1 µF
C3 C7
Q4
Q5
C6
L1
6.8
µ
H*
D1
BAT54
C5
C10
0.1
µF
TTC
CTTC
VREF
STAT2
Pack
Thermistor
Sense
BATDRV
ACDRV
bq24616
P
Q2 (ACFET)
Q3 (BATFET)
VREF
ISET1
STAT1
VBAT
R9
2.2 kW
R10
6.8 kW
R1
100
kW
PG
ADAPTER +
Cff
22 pF
0.1 µF
1µF
C8
10 µF
1 µF
1 µF
RSR
0.010
W
C11
0.1
µF
C12
10 µF*
C13
10 µF*
R2
500 kΩ
R12 10 kW
R11 10
kW
R13 10 kW
R3
100 kW
R4
32.4 kW
R5
100 kW
R6
10 kW
R7
100 kW
R8
22.1 kW
R14
100 kW
C14
0.1 mF
R15
100
kW
C15
0.1
µF
PwrPad
0.056 Fμ
R16
100
W
C1
0.1 Fμ
103AT
SI7617DN
SI7617DN
SIS412DN
SIS412DN
SI7617DN
C9
10 μF
R17
10Ω
R20
2Ω
C16
2.2μF
R18
1 kΩ
R19
1 kΩ
D2
D3
D4
bq24616
SLUSA49B –APRIL 2010– REVISED OCTOBER 2011 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 bq24616 controls external switches to prevent battery discharge back to the input and to connect the battery
to the system using 6-V gate drives for system efficiency. The bq24616 features dynamic power management
(DPM). The DPM reduces battery charge current when the input power limit is reached to avoid overloading the
ac adapter while supplying the load and the battery charger simultaneously. A highly accurate current-sense
amplifier enables precise measurement of input current from the ac adapter to monitor the overall system power.
TYPICAL APPLICATION
VIN = 19 V; 3-cell; I
adapter_limit
= 4 A; I
pre-charge
= I
term
= 0.3 A; 5-hour safety timer; I
charge
= 1.5 A (0–10°C), 3 A
(10°C–60°C); V
BAT
= 12.6 V (0°C–45°C), 12.3 V (45°C–50°C), 12.15 V (50°C–60°C).
Figure 1. Typical System Schematic
ORDERING INFORMATION
ORDERING NUMBER
PART NUMBER IC MARKING PACKAGE QUANTITY
(Tape and Reel)
bq24616RGER 3000
bq24616 QTJ 24-pin 4-mm × 4-mm QFN
bq24616RGET 250
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Product Folder Link(s): bq24616