參數(shù)資料
型號: LTC4080EMSE
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 0.8 A BATTERY CHARGE CONTROLLER, 2750 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數(shù): 17/20頁
文件大小: 288K
代理商: LTC4080EMSE
LTC4080
6
4080fa
20
25
35
15
10
5
0
30
4080 G17
BATTERY VOLTAGE (V)
2.5
BUCK
INPUT
CURRENT
(
A)
4.5
3.0
3.5
4.0
IOUT = 1mA
VOUT = 1.8V
L = 10
H
TEMPERATURE (
°C)
0.80
NORMALIZED
TIME
PERIOD
0.90
1.05
0.85
1.00
0.95
4080 G10
–50
30
–10
–30
50
70
10
90
BATTERY VOLTAGE (V)
2.5
2.26
2.27
2.28
4.0
4080 G11
2.25
2.24
3.0
3.5
4.5
2.23
2.22
FREQUENCY
(MHz)
TEMPERATURE (
°C)
–60
1.8
FREQUENCY
(MHz)
1.9
2.0
2.1
2.2
–20
20
60
100
2.3
2.4
–40
0
40
80
4080 G12
VBAT = 2.7V
VBAT = 4.5V
VBAT = 3.8V
LOAD CURRENT (mA)
0.01
40
EFFICIENCY
(%)
POWER
LOSS
(mW)
60
80
0.1
10
100
1
1000
20
0
100
0
10
100
0.1
0.01
1000
4080 G13
VBAT = 3.8V
VOUT = 1.8V
L = 10
H
C = 4.7
F
EFFICIENCY
(Burst)
POWER LOSS
(Burst)
EFFICIENCY
(PWM)
POWER
LOSS
(PWM)
BATTERY VOLTAGE (V)
2.5
1.780
BUCK
OUTPUT
VOLTAGE
(V)
1.785
1.790
1.795
1.800
1.805
1.810
3.0
3.5
4.0
4.5
4080 G14
PWM MODE
IOUT = 1mA
VOUT SET FOR 1.8V
Burst Mode
OPERATION
TEMPERATURE (C)
–50
BUCK
OUTPUT
VOLTAGE
(V)
1.800
1.805
1.810
10
50
1.795
1.790
–30
–10
30
70
90
1.785
1.780
4080 G15
PWM MODE
Burst Mode
OPERATION
IOUT = 1mA
VOUT SET FOR 1.8V
No-Load Buck Input Current
(Burst Mode Operation)
vs Battery Voltage
Normalized Charger Timer
Period vs Temperature
Buck Oscillator Frequency
vs Battery Voltage
Buck Oscillator Frequency
vs Temperature
Buck Efciency vs Load Current
(VOUT = 1.8V)
Buck Output Voltage
vs Battery Voltage
Buck Output Voltage
vs Temperature
VOLTAGE
(mV)
70
40
20
10
0
80
60
50
30
4080 G09
ICHRG, IACPR = 5mA
TEMPERATURE (
°C)
–50
30
–10
–30
50
70
10
90
CHRG and ACPR Pin Output
Low Voltage vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
Buck Efciency vs Load Current
(VOUT = 1.5V)
LOAD CURRENT (mA)
0.01
40
EFFICIENCY
(%)
POWER
LOSS
(mW)
60
80
0.1
10
100
1
1000
20
0
100
0
10
100
0.1
0.01
1000
4080 G13a
VBAT = 3.8V
VOUT = 1.5V
L = 10
H
C = 4.7
F
EFFICIENCY
(Burst)
POWER LOSS
(Burst)
EFFICIENCY
(PWM)
POWER
LOSS
(PWM)
(TA = 25°C, VCC = 5V, VBAT = 3.8V, unless otherwise specied)
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