參數(shù)資料
型號: DS21Q48
廠商: DALLAS SEMICONDUCTOR
元件分類: Digital Transmission Interface
英文描述: DATACOM, PCM TRANSCEIVER, PBGA144
封裝: BGA-144
文件頁數(shù): 9/14頁
文件大?。?/td> 318K
代理商: DS21Q48
MAX8627
Low VBATT, 20A IQ, 1MHz Synchronous
Boost Converter with True Shutdown
4
Maxim Integrated
EFFICIENCY vs. LOAD CURRENT
WITH 3.3V OUTPUT
MAX8627
toc01
LOAD CURRENT (mA)
EFFICIENCY
(%)
100
10
1
0.1
10
20
30
40
50
60
70
80
90
100
0
0.01
1000
VBATT = 3.0V
VBATT = 1.5V
VBATT = 1.8V
VBATT = 2.4V
EFFICIENCY vs. LOAD CURRENT
WITH 5V OUTPUT
MAX8627
toc02
LOAD CURRENT (mA)
EFFICIENCY
(%)
100
10
1
0.1
10
20
30
40
50
60
70
80
90
100
0
0.01
1000
VBATT = 4.2V
VBATT = 1.8V
VBATT = 2.4V
VBATT = 3.0V
VBATT = 3.6V
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
MAX8627
toc03
INPUT VOLTAGE (V)
MAXIMUM
LOAD
CURRENT
(A)
5.0
4.0
3.0
2.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1.0
VPOUT = 3.3V
VPOUT = 5V
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX8627
toc04
LOAD CURRENT (mA)
OUTPUT
VOLTAGE
(V)
100
10
1
0.1
4.94
4.96
4.98
5.00
5.02
5.04
5.06
5.08
5.10
5.12
4.92
0.01
1000
VBATT = 4.2V
VBATT = 1.8V
VBATT = 2.4V
VBATT = 3.0V
VBATT = 3.6V
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE WITH 3.3V OUTPUT
MAX8627
toc05
INPUT VOLTAGE (V)
INPUT
CURRENT
(mA)
3.0
2.5
2.0
1.5
10
20
30
40
50
60
70
80
90
0
1.0
3.5
TA = +25
°C
TA = +85
°C
TA = 40
°C
R1 = 1.15M
, R2 = 499k
OUTPUT ONLY LOADED WITH THE FB
RESISTOR-DIVIDER NETWORK.
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE WITH 5V OUTPUT
MAX8627
toc06
INPUT VOLTAGE (V)
INPUT
CURRENT
(mA)
4
3
2
20
40
60
80
100
120
140
160
180
0
15
TA = +25
°C
TA = +85
°C
TA = 40
°C
R1 = 2M
, R2 = 499k
OUTPUT ONLY LOADED WITH THE FB
RESISTOR-DIVIDER NETWORK.
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX8627
toc07
INPUT VOLTAGE (V)
SHUTDOWN
CURRENT
(nA)
4.5
3.5
2.5
100
200
300
400
500
600
700
0
1.5
5.5
TA = +25
°C
TA = +85
°C
TA = 40
°C
STARTUP VOLTAGE vs. LOAD CURRENT
WITH 5V OUTPUT
MAX8627
toc08
LOAD CURRENT (mA)
STARTUP
VOLTAGE
(V)
600
800
400
200
0.5
1.0
1.5
2.0
2.5
3.0
0
1000
TA = +25
°C
TA = +85
°C
TA = 40
°C
SOFT-START TIME vs. LOAD CURRENT
MAX8627
toc09
LOAD CURRENT (A)
SOFT-START
TIME
(ms)
0.3
0.4
0.2
0.1
1
2
3
4
5
6
0
00.5
Typical Operating Characteristics
(Circuit of Figure 1, VOUTS = VPOUT = 5V, VON = VBATT = 3.6V, TA = +25
°C, unless otherwise noted.)
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