L6924D STMicroelectronics, L6924D Datasheet - Page 22

• 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

Applications information: charging process
7.9
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Termination modes
Figure 17. Charge termination flow chart
As shown in
resistor between the I
after a de-glitch time, the status pins notify that the charge process is complete. This de-
glitch time is expressed as:
Equation 13
However, the termination of the charger process depends on the status of the V
●
●
●
●
If the voltage at the V
terminated when the charge current reaches I
If the voltage at V
and the charge current can go lower than I
charge as a fault condition, but the device continues the charge. When the T
elapsed, the charge process ends, and a fault condition is issued.
If the voltage on V
sets the V
If the voltage at the V
both in pre-charge and in fast-charge phase.
Figure
PRETHDefault
14, it is possible to set an end of charge current I
END
PRE
PRE
pin and GND. When the charge current goes down to this value,
PRE
PRE
pin goes lower than 0.8 V, the charge process does not terminate,
automatically.
pin is lower than 0.8 V during the Pre-charge Phase, the device
Doc ID 11908 Rev 9
pin goes lower than 0.5 V (edge sensitive), the timer is reset,
pin is higher than 0.8 V, the charge process is actually
T
DEGLITCH
=
ENDTH
T
MAXCH
220
ENDTH
. The status pins notify the end-of-
.
ENDTH
connecting a
PRE
MAXCH
L6924D
pin:
is