L6924U STMicroelectronics, L6924U Datasheet - Page 24
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L6924U
Manufacturer Part Number
L6924U
Description
Battery Management USB Battery Charger System w/integra
Manufacturer
STMicroelectronics
Datasheet
1.L6924U.pdf
(37 pages)
Specifications of L6924U
Product
Charge Management
Battery Type
Li-Ion
Output Voltage
4.2 V
Output Current
30 mA
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Package / Case
VFQFPN
Mounting Style
SMD/SMT
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
L6924U013TR
Manufacturer:
MICROCHIP
Quantity:
12 500
Company:
Part Number:
L6924UTR
Manufacturer:
ST
Quantity:
2 001
Application information: monitoring and protection
Note:
24/37
When the voltage (and thus, the temperature), returns to the window range, the device re-
starts the charging process. Moreover, there is a hysteresis for both the upper and lower
thresholds, as shown in
Figure 17. Battery temperature control flow chart
T
Figure 18. Voltage window with hysteresis on TH
Figure 19.
When the TH pin voltage rises and exceeds the V
L6924U stops the charge, and indicates a fault by the status pins. The device re-starts to
BAT
= OK when the battery temperature is between 0 °C and 50 °C
Pin connection
V
V
MAXTH_HYS
MINTH_HYS
V
V
MAXTH
MINTH
Figure 18
780mV
248mV
900mV
Doc ID 14716 Rev 2
.
225mV
Voltage
Variation on TH pin
MINTH
= 50 % of V
Charge disable
Charge enable
REF
(900 mV typ), the
L6924U