ST ISB005V1 User Manual
Low-cost Li-Ion battery charger demonstration board
based on the ST7263BK6 and L6924D
Features
■ Can be used both in USB mode and adapter
mode
■ Consists of a charger section based on the
L6924 for charging a Li-Ion / Li-polymer
battery, and an action control section using the
ST72F63BK6M1 microcontroller
■ Uses LEDs to indicate the charging condition
status
■ Includes an ICC connector for programming
the microcontroller
■ RoHS compliant
STEVAL-ISB005V1
Data brief
Description
The STEVAL-ISB005V1 demonstration board is a
standalone Li-Ion/ Li-polymer battery charger,
which can be powered either by USB or by an
external DC adaptor. The ST72F63BK6M1
microcontroller is used for USB enumeration and
to control the SD pin of the L6924.
In USB mode, the battery-charging current
complies with high-power USB device
specifications. The L6924 is powered by 5 V from
the USB, thus charging the battery also by USB.
A general-purpose adaptor socket is also
available for use when external power is available.
In this case, the L6924 operates completely
independent of the microcontroller.
STEVAL-ISB005V1
June 2010 Doc ID 15185 Rev 3 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic diagram STEVAL-ISB005V1
1 Schematic diagram
Figure 1. STEVAL-ISB005V1 USB system schematics
C10
C10
100nF
D6
D6
LED
LED
100nF
1
VIN
2
OSCOUT
3
OSCIN
4
5
6
7
8
RESET
9
10
CONTROL_IO
11
12
VPP
13
14
IEND
15
16
R19
R19
CHK_CHG
470
470
17
MODE
M I CROCONTROL L ER SECTION
C14
C14
33pF
33pF
12 MHz
12 MHz
33pF
33pF
C12
C12
VIN
R18
R18
10k
10k
R22
R22
10k
10k
R6
R6
470
470
D2
D2
LED
LED
VDD
OSCOUT
OSCIN
VSS
PC2/USBOE
PC1/TDO
PC0/RDI
RESET
NC
AIN7/IT8/PB7
AIN6/PB6/IT7
VPP/TEST
AIN5/IT6/PB5
AIN4/IT5/PB4
AIN3/PB3
AIN2/PB2
AIN1/PB1
SO3 4
U4
U4
PA0/MCO
PA1/SDA/ICCDATA
PA2/SCL/ICCCLK
PA3/EXTCLK
PA4/ICAP1/IT1
PA5/ICAP2/IT2
PA6/OCMP1/IT3
PA7/OCMP2/IT4
PB0/AIN0
ST72F63BK 6M1
ST72F63BK 6M1
VDDA
USBVCC
USBDM
USBDP
VSSA
C13
C13
34
100nF
100nF
C11
1
1k5
1k5
R17
R17
TP1
TP1
TEST POINT
TEST POINT
C11
47nF
47nF
U1
U1
3
VSS
1
RESET
RST
2
VIN
VCC
STM100 1
SOT2 3
J1
J1
1
3
5
7
VIN
9
HEADER 5*2
HEADER 5*2
VIN
33
USBVCC
32
USBDM
31
USBDP
30
29
MCO
28
ICCDATA
27
NC
26
NC
25
NC
24
ICCCLK
23
ST2
22
ST1
21
ADPT_CHECK
20
VBUS_CHECK
19
SD
18
ISEL
SW1
SW1
2
4
6
8
10
R1
R1
4k7
4k7
RESET
ICCDATA
ICCCLK
RESET
VPP
VIN
C1
C1
10nF
10nF
C2
C2
10nF
10nF
R3
R3
1M
1M
R2
R2
10K
10K
ICC CONNECTOR
1
1
J11
J11
J13
D7
J2
J2
C7
5
1
VBUS
I/O1
2
GND
3
I/O2
USBLC6- 2SC6
SOT2 236L
C7
100nF
100nF
U3
U3
R7
R7
6
22
22
I/O1
4
R8
R8
I/O2
22
22
USBDM
USBDP
5V
ADAPTOR
1uF
1uF
C5
C5
USB CONN1
USB CONN1
6
SHELL
USB_VCC
7
SHELL
USBDM
8
SHELL
USBDP
9
SHELL
C17
C17
4.7n
4.7n
F
F
USB_GND
R29
R29
1M
1M
. 5A
VBUS
1
2
3
4
ID
5
POWER SUPPLY
USB- B CONN
ADPT_CHECK
CONTROL_IO
ADPT_V
R26
R26
10k
10k
R28
R28
10k
10k
VBUS
D8
D8
STPS1L30U
STPS1L30U
VBUS
R25
R25
10k
VBUS_CHECK
10k
R27
R27
10k
10k
VIN
D7
3
ADPT_V
2
1
D3
D3
LED
LED
D4
D4
LED
LED
VIN
STPS1L30U
STPS1L30U
R4
R4
C4
C4
1k
1k
1nF
1nF
2
U2
U2
1
1
Vin
VPQFN16
Vref
2
VinSNS
5
TPRG
MODE/
MODE/
3
ST2
I ac /
I ac /
4
L6924D
L6924D
ST1
I us b/
I us b/
D
SD
GN
7
6
SD
R15
R15
10k
10k
R16
R16
R23
R23
0
0
20k
20k
VIN
1A
+
+
VIN
10uF
10uF
C3
C3
ST2
C8
C8
8.8nF
8.8nF
ST1
R12
R12
470
470
R14
R14
470
470
R5
R5
470
470
8
TH
11
Vout
10
Vosns
14
Vpre
16
Ipre
13
Iend
15
Iprg
L
E
SEL
S
R9
R9
I
I
Voprg
30k
30k
/
/
9
ISEL
R24
R24
0
0
VIN
NTC
2
VBAT
C61uF
C61uF
MODE
IEND
R20
R20
14k
14k
R10
R10
3.5k
3.5k
BAT TERY CHARGER
3
R11
R11
10k
10k
J13
2
3
R21
R21
10k
10k
VIN
AM03271v1
2/4 Doc ID 15185 Rev 3
Loading...