STEVAL-ISA076V1 STMicroelectronics, STEVAL-ISA076V1 Datasheet - Page 34

• Manufacturer Part Number: STEVAL-ISA076V1
• Description: BOARD DEMO BATT CHRGR L6924D
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISA076V1

• Design Resources: STEVAL-ISA076V1 Bill of Materials STEVAL-ISA076V1 Gerber Files STEVAL-ISA076V1 Schematics
• Featured Product: STM32 Cortex-M3 Companion Products
• Main Purpose: Power Management, Battery Charger
• Embedded: No
• Utilized Ic / Part: L6924D
• Primary Attributes: 1 Cell- Li-Ion / Li-Pol, 4.1V or 4.2V @ 1A, 12V Input
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11036

Application ideas
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Application ideas
USB battery charger
With a voltage range between 4.75 V and 5.25 V, and a maximum current up to 500 mA, the
USB power bus is an ideal source for charging a single-cell Li-Ion battery. Since it is not
possible to rely on the USB current limit to charge the battery, a linear approach must be
adopted. Therefore, it is only necessary to set the I
500 mA, and the device will charge the battery in Linear mode.
Figure 29
Figure 29. USB charger application
CONTROLLER
D- D+
SYSTEM
AND
USB
GND
V
BUS
shows an example of USB charger application schematic.
C1
C2
C4
V
T
ST2 SD GND
Doc ID 11908 Rev 9
V
ST1
IN
PRG
INSNS
V
REF
L6924D
R1
R4
V
OPRG
TH
V
V
V
I
OSNS
I
PRG
END
I
OUT
PRE
PRE
CHG
R5
with a maximum value lower than
R2
R3
C3
BATTERY
PACK
L6924D