L6924D STMicroelectronics, L6924D Datasheet - Page 33

• Manufacturer Part Number: L6924D
• Description: IC BATTERY CHARGER SYS 16-VFQFPN
• Manufacturer: STMicroelectronics

Specifications of L6924D

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 12 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-VFQFN
• Product: Charge Management
• Output Current: 30 mA
• Operating Supply Voltage: 2.5 V to 12 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• For Use With: 497-8428 - BOARD EVAL CHARGER ST7260/L6924D497-8247 - BOARD EVAL FOR L6924UTR497-5504 - EVAL BOARD FOR L6924D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6924D
Table 7.
Name
R10
LD1
LD2
R1
R2
R3
R4
R5
R6
R7
R8
R9
C1
C2
C3
C4
J1
J2
J3
J4
J5
GREEN ST1 LED.
Value
4.7µF
470R
10nF
N.M.
N.M.
N.M.
RED
1µF
1nF
3k3
24k
68k
1k
1k
1k
Demonstration board components description
Pull up resistor. To be used when the ST1 is connected to a LED.
Pull up resistor. To be used when the ST1 is connected to a LED.
Pull up resistor. Connected between V
End of charge current resistor. Used to set the termination current and, as a “Gas
Gauge” when measuring the voltage across on it.
Fast-charge current resistor. Used to set the charging current.
V
mounted, the V
I
the default one. If not mounted, the I
I
the default one. If not mounted, the I
If a NTC is not used, a half value of R3 must be mounted to keep the TH voltage in
the correct window.
It has the same function of R6. Moreover, if it is replaced with a short-circuit, when
J5 is closed, the timer is reset (falling edge).
Input capacitor.
T
Output capacitor.
V
ST2 LED.
ST1 jumper. Using to select the LED or the external µC.
ST2 jumper. Using to select the LED or the external µC.
SD jumper. If open, the device is in shutdown mode; when closed, the device starts
to work.
V
V
PRETH
PRETH
MAX
PRETH
REF
OPRG
PRE
capacitor. Used to set the maximum charging time.
filter capacitor.
jumper. If closed with R10 in short-circuit with GND, resets the timer.
resistor. Used to set the programmable pre-charge current threshold below
resistor. Used to set the programmable pre-charge current threshold above
jumper. If closed, the 4.2V output voltage is set; if open, the 4.1V is set.
resistor. Used to set programmable pre-charge voltage threshold. If not
PRETHDefault
Doc ID 11908 Rev 9
, equal to 2.8V, is set.
Description
PRETHDefault
PRETHDefault
REF
Additional applications information
and TH pin.
is set.
is set.
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