STNS01 Datasheet, PDF (1/29 Pages) STMicroelectronics – Battery overcurrent protection

STNS01
Li-Ion linear battery charger with LDO
Datasheet - production data
Applications
• Portable MP3 players
• Portable low-power devices
• Fitness portable devices
Description
DFN12L (3 x 3 mm²)
Features
• Charges single-cell Li-Ion batteries with CC-CV
algorithm and charge termination
• Charge current programmable up to 200 mA
• 1% accuracy on floating voltage (4.2 V)
• Integrated 3.1 V LDO regulator
• Automatic power path management
• Battery overcharge protection
• Battery overdischarge protection
• Battery overcurrent protection
• Charging timeout
• Very low battery leakage in
overdischarge/shutdown mode
• Low quiescent current
• Charge/fault status output
• Charger enable input
• Available in a 12-lead (3 x 3 mm²) DFN
package
The STNS01 is a linear charger for single-cell Li-
Ion batteries integrating an LDO regulator and
several battery protection functions.
The device uses a CC/CV algorithm to charge the
battery. The fast-charge current can be
programmed using an external resistor. Pre-
charge current and termination current are scaled
accordingly. The floating voltage value is 4.2 V.
The input supply voltage is normally used to
charge the battery and provide power to the LDO
regulator. When a valid input voltage is not
present and the battery is not empty, the device
automatically switches to battery power.
The STNS01 integrates overcharge,
overdischarge and overcurrent protection circuitry
to prevent the battery from being damaged under
fault conditions. It also features a charger enable
input to stop the charging process when battery
overtemperature is detected by external circuitry.
When the shutdown mode is activated, the battery
power consumption is reduced to less than
500 nA to maximize battery life during shelf time
or shipping.The device is available in a 3 × 3 mm²
12-lead DFN package.
Order code
Table 1. Device summary
Package
Packaging
STNS01PUR
DFN12L (3 x 3 mm²)
3000 parts per reel
July 2013
This is information on a product in full production.
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