TEA1104 Philips Semiconductors, TEA1104 Datasheet - Page 6

• Manufacturer Part Number: TEA1104
• Description: Cost effective battery monitor and fast charge IC for NiCd and NiMH chargers
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Output drivers
Several output drive possibilities are supported by the
TEA1104, to limit the fast charge current and to indicate
the mode that the charge is in.
In mains isolated systems, output drive current is available
for a bipolar or MOS switching device. Moreover, current
regulators can be driven (see Fig.4).
1996 Feb 26
handbook, full pagewidth
handbook, full pagewidth
Cost effective battery monitor and fast
charge IC for NiCd and NiMH chargers
TEA1104
I charge
V bat
LED
Fig.3 NiCd battery characteristics during a 1.25C charge cycle.
output
TEA1104
fast charge (I fast )
LED
Fig.4 Output drivers.
6
In non mains isolated systems, the current source can be
switched via the auxiliary winding (see Fig.6) using the
TEA140X power plugs.
In the application section, an example is shown driving two
LEDs that are indicating fast charging, protection during
fast charging, full status and removed batteries. It is also
possible to output the same information via one LED only.
output
TEA1104
detection
full
trickle charge (I fast /40)
LED
TEA1104; TEA1104T
LM317
MGE355
t
MGE356
Objective specification
output