STBC02 Datasheet, PDF (1/39 Pages) STMicroelectronics – Automatic power path management

STBC02
Li-Ion linear battery charger with LDO,
load switches and reset generator
Datasheet - production data
Features
 Charges single-cell Li-Ion batteries with
CC/CV algorithm and charge termination
 Fast charge current up to 450 mA
 Pre-charge current from 1 mA to 450 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 to terminate the charging
process for safety reasons
 Shipping mode feature allows battery low
leakage when over-discharged
 Very low battery leakage in over-discharge
and shutdown mode
 Charge/fault status output
 Battery voltage pin to allow external gauging
 Two 3 Ω SPDT load switches
 Reset generator triggered by USB detection
 SWIRE allows the STBC02 functions to be
controlled
 Available in Flip Chip 30, 400 um 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 STBC02 is a highly integrated power
management, embedding a linear battery
charger, a 150 mA LDO, 2 SPDT load switches, a
smart reset/watchdog block and a protection
circuit module (PCM) to prevent the battery from
being damaged under fault conditions.
The STBC02 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 by default, being 5% of the programmed
fast charge current, but it can also be fixed to
different values. Likewise, the battery floating
voltage value is programmable and can be set to
a value up to 4.45 V.
The STBC02 also features a charger enable
input to stop the charging process anytime.
The STBC02 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 STBC02 draws less than 10 nA from the
connected battery in shipping mode conditions,
so to maximize the battery life during end product
shelf life. The device is available in the Flip Chip
30 package.
December 2016
DocID029261 Rev 2
This is information on a product in full production.
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