L6924D STMicroelectronics, L6924D Datasheet - Page 4
![IC BATTERY CHARGER SYS 16-VFQFPN](/photos/6/58/65862/497-16-vfqfpn_series_sml.jpg)
L6924D
Manufacturer Part Number
L6924D
Description
IC BATTERY CHARGER SYS 16-VFQFPN
Manufacturer
STMicroelectronics
Datasheet
1.L6924D013TR.pdf
(38 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
L6924D013TR
Manufacturer:
ST
Quantity:
2 100
Company:
Part Number:
L6924D013TR
Manufacturer:
st
Quantity:
1 950
Company:
Part Number:
L6924D013TR
Manufacturer:
STMicroelectronics
Quantity:
10 000
Description
1
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Description
The L6924D is a fully monolithic battery charger dedicated to single-cell Li-Ion/Polymer
battery packs. It is the ideal solution for space-limited applications, like PDAs, handheld
equipment, cellular phones, and digital cameras. It integrates all of the power elements (the
power MOSFET, reverse blocking diode and the sense resistor) in a small VFQFPN16 (3 x 3
mm) package. When an external voltage regulated wall adapter is used, the L6924D works
in Linear Mode, and charges the battery in a constant current/constant voltage (CC/CV)
profile. Moreover, when a current-limited adapter is used, the device can operate in quasi-
pulse mode, dramatically reducing the power dissipation. Regardless of the charging
approach, a closed loop thermal control avoids device overheating. The device has an
operating input voltage ranging from 2.5 V to 12 V. The L6924D allows the user to program
many parameters, such as pre-charge current, fast-charge current, pre-charge voltage
threshold, end-of-charge current threshold, and charge timer. The L6924D offers two open
collector outputs for diagnostic purposes, which can be used to either drive two external
LEDs or communicate with a host microcontroller. Finally, the L6924D also provides very
flexible control of the charge process termination and Gas Gauge capability, as well as other
functions, such as checking for battery presence, and monitoring and protecting the battery
from unsafe thermal conditions.
Figure 1.
Figure 2.
Minimum application size
Basis application schematic
Doc ID 11908 Rev 9
L6924D