參數(shù)資料
型號： MAX1742EEE+T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches
中文描述： 4.7 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁數(shù)： 14/16頁
文件大?。?/td> 597K
代理商： MAX1742EEE+T
MAX1742/MAX1842
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 5.0V, L = 2.5
H)
MAX1842
toc11
OUTPUT CURRENT (A)
VOUT = 1.5V, RTOFF = 1OOk
,
fPWM = 770kHz
VOUT = 1.8V, RTOFF = 75k
,
fPWM = 910kHz
VOUT = 2.5V, RTOFF = 47k
,
fPWM = 1070kHz
100
95
90
85
80
70
65
60
55
50
75
EFFICIENCY
(%)
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 3.3V, L = 1.5
H)
MAX1842
toc12
OUTPUT CURRENT (A)
VOUT = 2.5V, RTOFF = 56k
,
fPWM = 1000kHz
VOUT = 2.5V, RTOFF = 39k
,
fPWM = 610kHz
VOUT = 1.8V, RTOFF = 43k
,
fPWM = 1050kHz
100
95
90
85
80
70
65
60
55
50
75
EFFICIENCY
(%)
0.001
0.01
0.1
1
10
MAX1842
EFFICIENCY vs. OUTPUT CURRENT
(fPWM = 270kHz)
MAX1842
toc13
IOUT (A)
VIN = 3.3V, VOUT = 1.8V,
L = 4.7
H, RTOFF = 160k
100
95
90
85
80
70
65
60
55
50
75
EFFICIENCY
(%)
VIN = 5V, VOUT = 1.8V, L = 5.6
H,
RTOFF = 240k
MAX1842
NORMALIZED OUTPUT ERROR
vs. OUTPUT CURRENT
MAX1842
toc14
0.001
0.01
0.1
1
10
OUTPUT CURRENT (A)
VIN = 3.3V, VOUT = 1.5V, L = 1.5
H
VIN = 5V, VOUT = 1.5V, L = 2.5
H
0.1
0
-0.1
-0.2
-0.3
-0.4
NORMALIZED
OUTPUT
ERROR
(%)
0
400
200
800
600
1000
1200
0
1.0
1.5
0.5
2.0
2.5
3.0
MAX1842
SWITCHING FREQUENCY
vs. OUTPUT CURRENT
MAX1842
toc15
OUTPUT CURRENT (A)
FREQUENCY
(kHz)
VIN = 5V, VOUT = 2.5V, L = 2.5
H
VIN = 3.3V, VOUT = 1.5V, L = 1.5
H
VIN = 5V, VOUT = 1.5V, L = 2.5
H
0
MAX1842
STARTUP AND SHUTDOWN
VSS
2V/div
MAX1842 toc16
VSHDN
5V/div
ROUT = 0.5
, RTOFF = 56k
VIN = 3.3V, VOUT = 1.5V
IINPUT
1A/div
VOUTPUT
1V/div
1ms/div
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MAX17435ETG+T 功能描述:電池管理 High f SMBus Battery Charger RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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