L6924D STMicroelectronics, L6924D Datasheet - Page 19

• 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
7.5
End-of-charge current
When the charge voltage approaches the selected value (4.1 V or 4.2 V), the voltage
regulation phase takes place. The charge current starts to decrease until it goes lower than
a programmable end value, I
the I
Equation 10
Figure 14. I
Where K
Typically, this current level is used to terminate the charge process. However, it is also
possible to disable the charge termination process based on this current level
on page
This pin is also used to monitor the charge current, because the current injected in R
proportional to I
charge status like a gas gauge.
END
END
22).
pin and GND (see
is 1050; and V
END
CHG
pin connection
. The voltage across R
Figure
MIN
ENDTH
Doc ID 11908 Rev 9
is 50 mV.
R
14). The equation that describes this relation as follows:
, depending on an external resistor connected between
END
=
V
END
MIN
Applications information: charging process
×
can be used by a microcontroller to check the
⎛
⎜ ⎜
⎝
I
K
ENDTH
END
⎞
⎟ ⎟
⎠
(Chapter 7.9
END
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is