STBC03 Datasheet, PDF (1/34 Pages) STMicroelectronics – Li-Ion linear battery charger with LDO and load switches

STBC03
Li-Ion linear battery charger with LDO and load switches
Datasheet - production data
Features
 Charges single-cell Li-Ion batteries with
CC/CV algorithm and charge termination
 Fast charge current up to 650 mA adjustable
by external resistor
 Pre-charge current from 1 mA
 Adjustable floating voltage up to 4.45 V
 Integrated low quiescent LDO regulator
 Automatic power path management
 Auto-recharge function
 Embedded protection circuit module (PCM)
featuring battery overcharge, battery over-
discharge and battery overcurrent
protections
 Charging timeout
 Shipping mode feature allows battery low
leakage when over-discharged
 Very low battery leakage in over-discharge
and shutdown mode
 Charger enable input
 Charge/fault status output
 Battery voltage pin to allow external gauging
 Two 3 Ω SPDT load switches
 Available in Flip Chip 30, 400 µm pitch
package
 Rugged ±4 kV HBM, ESD protection on the
most critical pins
Applications
 Smart watches and wearable devices
 Fitness and medical accessories
 Li-Ion and other Li-Poly battery rechargeable
equipment
Description
The STBC03 is a highly integrated power
management, embedding a linear battery
charger, a 150 mA LDO, 2 SPDT load switches,
and a protection circuit module (PCM) to prevent
the battery from being damaged under fault
conditions.
The STBC03 uses a CC/CV algorithm to charge
the battery; the fast charge and the pre-charge
current can be both independently programmed
using dedicated resistors. The termination current
is set to 5% of the programmed fast charge
current, but has fixed values for fast charge
currents lower than 20 mA. The battery floating
voltage value is programmable and can be set to
a value up to 4.45 V.
The STBC03 also features a charger enable
input to stop the charging process anytime.
The STBC03 is automatically powered off from
the connected battery when the IN pin is not
connected to a valid power source (battery
mode).
A battery under/overtemperature condition can
be detected by using an external circuitry (NTC
thermistor).
The STBC03 draws less than 10 nA from the
connected battery in shipping mode conditions,
so to maximize the battery life during shelf life of
the final application. The device is available in the
Flip Chip 30 package.
February 2017
DocID029927 Rev 2
This is information on a product in full production.
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