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부품번호 | STBC02 기능 |
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기능 | Li-Ion linear battery charger | ||
제조업체 | STMicroelectronics | ||
로고 | |||
전체 30 페이지수
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.
May 2016
DocID029261 Rev 1
This is information on a product in full production.
1/38
www.st.com
List of tables
STBC02
List of tables
Table 1: Typical bill of material (BOM)........................................................................................................6
Table 2: Pin description ..............................................................................................................................7
Table 3: Absolute maximum ratings ...........................................................................................................9
Table 4: Thermal data.................................................................................................................................9
Table 5: Electrical characteristics .............................................................................................................10
Table 6: Charging current setting .............................................................................................................18
Table 7: SYS voltage source ....................................................................................................................19
Table 8: CHG pin state .............................................................................................................................20
Table 9: SWIRE programming..................................................................................................................23
Table 10: IFAST and IEND .............................................................................................................................28
Table 11: Flip Chip 30 (2.59x2.25 mm) package mechanical data ..........................................................35
Table 12: Ordering information .................................................................................................................36
Table 13: Document revision history ........................................................................................................37
4/38 DocID029261 Rev 1
4페이지 STBC02
Pin configuration (top through view)
2 Pin configuration (top through view)
Figure 2: Pin configuration top through view
Bump
IN
BAT
Power
SYS
LDO
NTC
AGND
GND
ISET
Programming
IPRE
BATMS
Sensing
BATSNS
BATSNSFV
Digital I/Os
CEN
CHG
WAKE-UP
SW_SEL
Table 2: Pin description
Bump
name
Description
E5-F5
Input supply voltage. Bypass this pin to ground with a
10 µF capacitor
A5-B5
Battery positive terminal. Bypass this pin to GND with
a 4.7 µF ceramic capacitor
C5-D5
System output. Bypass this pin to ground with 1 µF
ceramic capacitor
F4
LDO output. Bypass this pin to ground with 1 µF
ceramic capacitor
D1 Battery temperature monitor pin
B4 Analog ground
A3 GROUND
Connect together with the
same ground layer
A4 Fast charge current programming resistor
D4 Pre-charge current programming resistor
C4 Battery voltage measurement pin
B3
Battery voltage sensing. Connect as close as possible to
the battery positive terminal
A2
Floating voltage sensing. Connect as close as possible
to the battery positive terminal
B1
Charger enable pin. Active high. 500 kΩ internal pull-up
(to LDO)
E1 Charging/fault flag. Active low (open drain output)
D2
Shipping mode exit input pin. Active high. 50 kΩ internal
pull-down
C1 Load switch selection input (refer to LDO level)
DocID029261 Rev 1
7/38
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부품번호 | 상세설명 및 기능 | 제조사 |
STBC02 | Li-Ion linear battery charger | STMicroelectronics |
STBC08 | 800 mA standalone linear Li-Ion battery charger | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |