BQ25606 Datasheet, PDF (4/43 Pages) Texas Instruments – Standalone 3.0-A, Single Cell Battery Charger With 40V Over Voltage Protection Controller

bq25606
SLUSCK6 – MAY 2017
6 Pin Configuration and Functions
bq25606 WQFN Package
24-Pin WQFN
Top View
www.ti.com
VAC
ACDRV
D+
D±
STAT
OTG
1
18
2
17
3
Thermal
16
4
Pad
15
5
14
6
13
7 8 9 10 11 12
GND
GND
SYS
SYS
BAT
BAT
(Not to scale)
Terminal
Name
No.
ACDRV
2
13
BAT
14
BTST
21
CE
9
D+
3
D–
4
17
GND
18
ICHG
10
ILIM
8
OTG
6
PG
7
PMID
23
REGN
22
I/O Description
Charge pump output to drive external N-channel MOSFET (OVPFET). ACDRV voltage is 11 V above
AO VBUS when VAC voltage is below ACOV threshold and above V_{VAC_PRESENT}. If external OVP is not
used, leave this pin floating.
P
Battery connection point to the positive terminal of the battery pack. The internal current sensing resistor
is connected between SYS and BAT. Connect a 10 µF closely to the BAT pin.
P
PWM high side driver positive supply. internally, the BTST is connected to the cathode of the boost-strap
diode. Connect the 0.047-μF bootstrap capacitor from SW to BTST.
DI Charge enable pin. When this pin is driven low, battery charging is enabled.
Positive line of the USB data line pair. D+/D– based USB host/charging port detection. The detection
AIO includes data contact detection (DCD), primary and secondary detection in BC1.2 and nonstandard
adaptors
Negative line of the USB data line pair. D+/D– based USB host/charging port detection. The detection
AIO includes data contact detection (DCD), primary and secondary detection in BC1.2 and nonstandard
adaptors
— Power ground and signal ground
AI
I_CHG pin sets the charge current limit. A resistor is connected from I_CHG pin to ground to set charge
current limit as I_CHG = K_ICHG/R_ICHG. The acceptable range for charge current is 300 mA – 3000 mA.
ILIM sets the input current limit. A resistor is connected from ILIM pin to ground to set the input current
AI
limit as IINDPM = K_ILIM/R_ILIM. The acceptable range for ILIM current is 500 mA - 3200 mA.
The resistor based input current limit is effective only when the input adapter is detected as unknown.
Otherwise, the input current limit is determined by D+/D– detection outcome.
DI Boost mode enable pin. When this pin is pulled HIGH, OTG is enabled. OTG cannot be floating.
Open drain active low power good indicator. Connect to the pull up rail through 10 kΩ resistor. LOW
DO indicates a good input if the input voltage is between UVLO and ACOV, above SLEEP mode threshold,
and input current limit is above 30 mA.
P
Connected to the drain of the reverse blocking MOSFET (RBFET) and the drain of HSFET. Put a 10 -μF
ceramic capacitor between PMID and GND.
PWM low side driver positive supply output. Internally, REGN is connected to the anode of the boost-
P
strap diode. Connect a 4.7-μF (10-V rating) ceramic capacitor from REGN to analog GND. The capacitor
should be placed close to the IC.
4
Submit Documentation Feedback
Product Folder Links: bq25606
Copyright © 2017, Texas Instruments Incorporated