Battery Charger Solutions | National Semiconductor — Battery Charger ICs & Battery Charging (e.g. Current Gauge) Solutions
Battery Charger Solutions
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National offers lithium-ion, lithium-polymer, lithium manganese, and other battery charger product and reference design solutions from National Semiconductor, including solutions accepting high-rate charging, AC wall adapter, and USB power sources.
Battery Charger ICs
| Base Part |
Full Charge Vmax (V) |
Vin Min (V) |
Vin Max (V) |
Battery Cells |
Battery Chemistry |
Charge Current |
Charge Modes |
On/Off Pin |
Error Flag |
Adjustable Output |
Voltage Fault Protection |
Output Current (mA) |
|
4.2 |
4.35 |
6 |
1 cell |
Li-Ion or Li-Polymer |
500 to 1000mA (Wall) or 100 or 500mA (USB) |
Prequal, CC, CV, top-off, maintenance |
Yes |
No |
No |
No |
1000 |
|
8.4 |
|
20 |
2 cell |
Li-Ion |
|
CC, CV |
No |
No |
Yes |
No |
|
|
8.2 |
4.5 |
24 |
1 or 2 cells |
Li-Ion |
Depends on external transistor - drive current is 25mA |
CC, CV |
No |
Yes |
No |
Yes |
|
|
4.2 |
3 |
5.5 |
1 cell |
Li-Ion |
100mA default, programmable 50-950mA |
CC, CV, maintenance |
Yes |
No |
Yes |
Yes |
100 |
|
4.2 |
4.3 |
6 |
1 cell |
Li-Ion |
100 to 750mA (wall), 100 or 500mA (USB) |
Prequal, CC, CV, maintenance |
Yes |
No |
Yes |
No |
750 |
See All Battery Charger ICs
Current Gauge ICs
| Base Part |
Sense Current Range (+/-) (A) |
Sense Element Resistance (Ohm) |
Sense Accuracy (%) |
Sensing Type |
Sampling Interval (sec) |
Input Voltage (V) |
Iq in Shutdown (typ) (mA) |
Switching Frequency (kHz) |
Watchdog |
On/Off Pin |
|
7 |
0.004 |
4 |
Low side |
0.05 |
2 - 5.25 |
0.0025 |
0.02 |
No |
Yes |
|
1 |
0.003 |
3 |
High side |
0.006 |
2 - 5.25 |
0.0018 |
0.16 |
No |
Yes |
See All Current Gauge ICs
Integrated Power Management Units (PMUs) with Battery Charging
- LP3972 - Power Management Unit for Advanced Application Processors
- LP3970 - Power Management Unit for Advanced Application Processors
- LP3921 - Battery Charger Management and Regulator Unit with Integrated Boomer Audio Amplifier
- LP3919 - CDMA Cellular Phone Power Management Unit
- LP3918 - Battery Charge Management and Regulator Unit for CDMA Phones
- LP3913 - Power Management IC for Flash Memory Based Portable Media Players
- LP3910 - Power Management IC for Hard Drive Based Portable Media Players
- See All Power Management Units
Design Resources
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