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BL4054 데이터시트 PDF




Shanghai Belling에서 제조한 전자 부품 BL4054은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 BL4054 기능
기능 800mA Standalone Linear Li-Ion Battery Charger
제조업체 Shanghai Belling
로고 Shanghai Belling 로고


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BL4054 데이터시트, 핀배열, 회로
BL4054
800mA Standalone Linear Li-Ion Battery Charger
with Thermal Regulation in Thin SOT
FEATURES
z Programmable Charge Current Up to
800mA
z No MOSFET, Sense Resistor or Blocking
Diode Required
z Preset 4.2V Charge Voltage with ±1%
Accuracy
z Charge Current Monitor Output for Gas
Gauging
z Thermal Regulation Maximizes Charge
Rate Without Risk of Overheating
z Charges Single Cell Li-Ion Batteries Dire-
ctly from USB Port
z Over-Voltage Protect
z Automatic Recharge
z Charge Status Output Pin
z C/10 Charge Termination
z 25μA Supply Current in Shutdown
z 2.9V Trickle Charge Threshold
z Soft-Start Limits Inrush Current
z Available in 5-Lead SOT-23 Package
APPLICATIONS
z Cellular and Smart Phones
z Charging Docks and Cradles
z Blue Tooth Applications
z PDAs
z MP3 Players
DESCRIPTION
The BL4054 is a complete constant-current /
constant voltage linear charger for single cell
Lithium-Ion batteries. No external sense
resistor is needed, and no blocking diode is
required due to the internal MOSFET archite-
cture. Thermal feedback regulates the charge
current to limit the die temperature during
high power operation or high ambient temper-
ature. The charge voltage is fixed at 4.2V,
and the charge current can be programmed
externally with a single resistor. The BL4054
automatically terminates the charge cycle
when the charge current drops to 1/10 the
programmed value after the final float voltage
is reached.
When the input supply (wall adapter or USB
supply) is removed, the BL4054 automatically
enters a low current state, dropping the
battery drain current to less than 2μΑ. The
BL4054 can be put into shutdown mode,
reducing the supply current to 25μA.
Other features include charge current monitor,
under-voltage lockout, automatic recharge
and a status pin to indicate charge termi-
nation and the presence of an input voltage.
ORDERING INFORMATION
BL4054 – XX X X XXX
Package:
TRN:TSOT23-5
RN:SOT23-5
Features:
P: Standard(default, lead free)
C: Customized
Trickle Charge
T: Trickle Charge
N: No Trickle Charge
Float Voltage
42……4.2V
43……4.3V
44……4.4V
TYPICAL APPLICATION
VCC
4.5V TO 6.5V
1μF VCC
BAT
BL4054
PROG
600mA
4.2V
Li-Ion
Battery
GND
1.65k
600mA Application Circuit
PPMIC BU
- 1 - www.belling.com.cn




BL4054 pdf, 반도체, 판매, 대치품
Block Diagram
120oC
TDIE
-
TA
+
7.0V
OVP
OV_SHDN
CA
-
SHDN
1 CHRGb
STANDBY
BL4054
800mA Standalone Linear Li-Ion Battery Charger
with Thermal Regulation in Thin SOT
4
VCC
1x
MA
1000x
5μΑ BAT 3
R1
VA
R2
-
C1
+
+
C2
-
R3
1V
R4
0.1V
R5
REF
1.21V
TO
+ BAT
C3
- 2.9V
3μΑ
5 PROG
VCC
RPROG
GND 2
PPMIC BU
- 4 - www.belling.com.cn

4페이지










BL4054 전자부품, 판매, 대치품
BL4054
800mA Standalone Linear Li-Ion Battery Charger
with Thermal Regulation in Thin SOT
Typical Performance Characteristics
PROG Pin Pull-Up Current vs
Temperature and Supply Voltage
4.5
VBAT=4.3V
4.2 VPROG=0V
3.9
3.6
VCC=6.5V
3.3
VCC=4.2V
3.0
2.7
-50 -25 0 25 50 75 100 125
TEMPERATURE(°C)
PROGPin Current vs PROGPin
Voltage (Pull-Up Current)
4.0
3.5
3.0
2.5
2.0
1.5
1.0 VCC=5V
0.5 VBAT=4.3V
TA=25°C
0.0
2.0 2.1 2.2 2.3 2.4 2.5 2.6
VPROG(V)
PROGPin Current vs PROGPin
Voltage (Clamp Current)
0
-50
-100
-150
-200
VCC=5V
-250 VBAT=4.3V
TA=25°C
-300
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VPROG(V)
Regulated Output (Float) Voltage
vs Charge Current
4.25
VCC=5V
4.23 TA=25°C
RPROG=1.25K
4.21
4.19
4.17
4.15
0
100 200 300 400 500 600
IBAT(mA)
RegulatedOutput (Float) Voltage
vs Temperature
4.215
VCC=5V
4.210 RPROG=10K
4.205
4.200
4.195
4.190
4.185
-50
-25 0 25 50 75
TEMPERATURE(°C)
100
Regulated Output (Float) Voltage
vs Supply Voltage
4.215
TA=25°C
4.210 RPROG=10K
4.205
4.200
4.195
4.190
4.185
4.0 4.5 5.0 5.5 6.0 6.5 7.0
VCC(V)
CHRGb Pin I-V Curve
(Strong Pull-Down State)
40
35
30
25
20
15
10 VCC=5V
5 VBAT=4V
TA=25°C
0
0123456
VCHRGb(V)
7
CHRGb Pin Current vs Temperature
(Strong Pull-Down State)
40
38
36
34
32
30
28
26
VCC=5V
24 VBAT=4V
22 VCHRGb=1V
20
-50 -25 0 25 50 75 100 125
TEMPERATURE(°C)
CHRGb Pin I-V Curve
(Weak Pull-Down State)
30
25
20
15
10
VCC=5V
5 VBAT=4.3V
TA=25°C
0
01234567
VCHRGb(V)
PPMIC BU
- 7 - www.belling.com.cn

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