芯美电子
Symbol
V
PROG
V
ASD
t
SS_CHRG
I
TRKL
V
TRKL
V
TRHYS
△
V
RECHRG
△
V
UVCL1
△
V
UVCL2
t
TIMER
Preliminary
Conditions
0.8k
≦
R
PROG
≦
4k
(V
CC
- V
BAT
), V
CC
Low to High
(V
CC
- V
BAT
), V
CC
High to Low
EUP8080
EUP8080
Unit
Min. Typ. Max.
0.975
85
15
1
110
45
120
1.025
135
70
V
mV
mV
Electrical Characteristics
(T
A
= 25℃, V
CC
= 5V, V
BAT
= 3.8V,
V
EN _ CHRG
= 0V, V
EN_BUCK
= V
BAT
, V
MODE
= 0V.)
Parameter
PROG Pin Servo Voltage
Automatic Shutdown Threshold
Voltage
Battery Charger Soft-Start Time
Trickle Charge Current
V
BAT
= 2V, R
PROG
= 0.8k
35
2.80
100
µs
65
3.10
350
mA
V
mV
mV
mV
mV
6
3
1.5
0.12
hrs
hrs
hrs
mA/mA
℃
50
2.95
255
150
Trickle Charge Threshold Voltage V
BAT
Rising
Trickle Charge Threshold Voltage
Hysteresis
Recharge Battery Threshold
V
FLOAT
– V
BAT
, 0℃< T
A
< 85℃
Voltage
(V
CC
- V
BAT
) Undervoltage Current I
BAT
= 0.9 I
CHG
Limit Threshold Voltage
I
BAT
= 0.1 I
CHG
Termination Timer
Recharge Time
Low-Battery Charge Time
V
BAT
= 2.5V
End of Charge Indication Current
R
PROG
= 2k (Note 6)
Level
Junction Temperature in Constant-
Temperature Mode
Power FET On-Resistance
I
BAT
= 350mA, V
CC
= 4V
(Between V
CC
and BAT)
Defective Battery Detection
CHRG Pulse Frequency
Defective Battery Detection
CHRG Pulse Frequency Duty
Ratio
FB Servo Voltage
FB Pin Input Current
Switching Frequency
No-Load Battery Current
(Continuous Frequency Mode)
No-Load Battery Current
(Power Save Mode Operation)
Battery Current in SLEEP Mode
No-Load for Regulator,
V
EN _ CHRG
= 5V, L = 2.2µH,
C = 10µF,
V(FB)=0.5V
No-Load for Regulator,
V
V
FB
= 0.85V
180
90
3
1.5
0.75
0.09
300
130
4.5
2.25
1.125
0.1
115
1
2
75
I
C/10
T
LIM
R
ON_CHRG
f
BADBAT
D
BADBAT
Hz
%
Buck Converter
V
FB
I
FB
f
OSC
I
BAT_NL_CF
0.588
-50
1.2
1.5
305
0.6
0.612
50
1.8
V
nA
MHz
µA
I
BAT_NL_BM
EN _ CHRG
I
BAT_SLP
= 5V, MODE = V
BAT
, L = 2.2µH,
C = 10µF
= 5V, MODE = V
BAT
,
V
EN _ CHRG
36
µA
30
2.5
2.3
2.6
2.4
2.7
2.5
µA
V
V
V
OUT
> Regulation Voltage
V
BAT
Rising
V
BAT
Falling
V
UVLO_BUCK
Buck Undervoltage Lockout
DS8080
Ver 0.1
Aug. 2007
5
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EUTECH [ EUTECH MICROELECTRONICS INC ]
