參數資料
型號: MAX8560
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: 4MHz. 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN
中文描述: 4MHz、500mA同步降壓型DC-DC轉換器,薄型SOT和TDFN封裝
文件頁數: 4/14頁
文件大?。?/td> 296K
代理商: MAX8560
M
PWM Buc k Converters with Bypass FET
for N-CDMA/W-CDMA Handsets
4
_______________________________________________________________________________________
Typic al Operating Charac teristic s
(V
BATT
= 3.6V, T
A
= +25
°
C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT VOLTAGE
IN NORMAL MODE
M
OUTPUT VOLTAGE (V)
E
3.0
2.5
2.0
1.5
1.0
0.5
60
70
80
90
100
50
0
3.5
R
LOAD
= 15
R
LOAD
= 10
R
LOAD
= 5
SKIP = GND
EFFICIENCY vs. OUTPUT VOLTAGE
IN PWM MODE
M
OUTPUT VOLTAGE (V)
E
3.0
2.5
2.0
1.5
1.0
0.5
60
70
80
90
100
50
0
3.5
R
LOAD
= 15
R
LOAD
= 10
R
LOAD
= 5
SKIP = BATT
EFFICIENCY vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
E
5.0
4.5
4.0
3.5
3.0
60
70
80
90
100
50
2.5
5.5
V
OUT
= 1.5V
V
OUT
= 0.4V
V
OUT
= 3.4V
SKIP = GND
R
LOAD
= 10
EFFICIENCY vs. LOAD CURRENT
M
LOAD CURRENT (mA)
E
100
10
60
70
80
90
100
50
1
1000
V
OUT
= 2.5V;
NORMAL MODE
V
OUT
= 1.5V;
NORMAL MODE
V
OUT
= 1.5V; PWM
V
OUT
= 2.5V; PWM
MAX8500/MAX8503
DROPOUT VOLTAGE vs. LOAD CURRENT
M
LOAD CURRENT (mA)
D
900
800
700
600
500
400
300
200
100
50
100
150
200
250
300
0
0
1000
V
OUT
= 3.4V
V
OUT
= 2.5V
MAX8504
DROPOUT VOLTAGE vs. LOAD CURRENT
M
LOAD CURRENT (mA)
D
900
800
700
600
500
400
300
200
100
0.05
0.10
0.15
0.20
0.25
0
0
1000
V
= 3.5V
HP = BATT
MAX8500/MAX8503
ENTERING REGULATOR DROPOUT REGION
M
V
BATT
(V)
O
4.1
4.0
3.4 3.5 3.6
3.8
3.7
3.9
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.15
3.3
4.2
V
BATT
R
LOAD
= 15
R
LOAD
= 10
R
LOAD
= 7.6
R
LOAD
= 5
L = SUMIDA CDRH3D16-4R7M
MAX8500/MAX8503
ENTERING REGULATOR DROPOUT REGION
M
V
BATT
(V)
O
4.1
4.0
3.4 3.5 3.6
3.8
3.7
3.9
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.15
3.3
4.2
V
BATT
R
LOAD
= 15
R
LOAD
= 10
R
LOAD
= 7.6
R
LOAD
= 5
L = TOKOD312F-4R7M
MAX8500/MAX8503
ENTERING REGULATOR DROPOUT REGION
M
LOAD CURRENT (mA)
O
1200
900
600
300
3.25
3.30
3.35
3.40
3.45
3.50
3.20
0
1500
V
OUT
= 3.4V;
SKIP = BATT
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