L6924U STMicroelectronics, L6924U Datasheet - Page 28

• Manufacturer Part Number: L6924U
• Description: Battery Management USB Battery Charger System w/integra
• Manufacturer: STMicroelectronics

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

Application information: monitoring and protection
8.4
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Figure 21. ST1 and ST2 connection with LEDs or microcontroller
Table 6.
Shutdown
The L6924U has a shutdown pin; when the pin is connected to GND, the device is operating.
When the pin is left floating, the device enters the shutdown mode, the consumption from
the input is dramatically reduced to 60 µA (typ.). In this condition, V
Bad battery temperature
Charge in progress
Charge condition
Stand by mode
Battery absent
Charge done
Over time
Status LEDs Indications
When the device is in pre-charge or fast-
charge status
When the charging current goes below the
I
When the input voltage goes under
V
When the voltage on the TH pin is out of
the programmable window, in accordance
with the NTC or PTC thermistor
When the battery pack is removed
When T
ENDTH
BAT
Doc ID 14716 Rev 2
+ 50 mV
MAXCH
or T
Description
MAXPRECH
expires
REF
OFF
OFF
ST1
ON
ON
ON
ON
is turned OFF.
OFF
OFF
ST2
L6924U
ON
ON
ON
ON