ne57610 NXP Semiconductors, ne57610 Datasheet - Page 14

• Manufacturer Part Number: ne57610
• Description: Li-ion Battery Charger Control With Adjustable Thresholds
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DESIGN-RELATED SAFETY ISSUES
In designing charging circuits for lithium-ion and polymer cells, the
designer should provide for user mishandling, common
environmental hazards and for random component failures.
Some of the user-related issues are: plugging the battery pack into
the charger backwards, inserting of the battery into the live charger,
and plugging the charger into an unexpected input voltage source.
A series diode is typically used for reversed battery protection. This
prevents reverse currents from flowing into the device, protecting
the functionality of the charger. Protecting against live insertion of
the battery and the wrong type of input power to the charger must be
PACKING METHOD
The NE57610 is packed in reels, as shown in Figure 22.
2002 Nov 05
Li-ion battery charger control
with adjustable thresholds
GUARD
BARCODE
BAND
LABEL
BOX
TAPE
Figure 22. Tape and reel packing method
REEL
ASSEMBLY
14
dealt with by examining how the circuit powers-up and making sure
there are no power-up sequences that can lead to a component
failure or hazardous operating conditions.
A common adverse operating condition at the input is
lightning-caused transients. A simple 500 mW zener diode across
the input terminals handles positive and negative transients caused
by lightning. The zener will fail short-circuited, if the energy exceeds
its surge energy ratings. To help protect the protection zener, place a
small inductor or low value resistor in series from the input source.
This will lower the peak voltage and energy entering the zener diode
and will distribute the energy over a longer period.
TAPE DETAIL
COVER TAPE
NE57610
CARRIER TAPE
Product data
SL01305