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參數(shù)資料
| 型號： | MAX1831EEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3A, 1MHz, Low-Voltage, Step-Down Regulators with Synchronous Rectification and Internal Switches |
| 中文描述： | 5.1 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)： | 4/13頁 |
| 文件大?。?/td> | 278K |
| 代理商： | MAX1831EEE |
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 5.0V, L = 1.5
μ
H)
60
M
OUTPUT CURRENT (A)
E
70
80
75
90
85
65
55
95
V
OUT
= 1.8V
R
TOFF
= 75k
V
OUT
= 1.5V
R
TOFF
= 82k
V
OUT
= 3.3V
R
TOFF
= 39k
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(V
IN
= 3.3V, L = 1.5
μ
H)
60
M
OUTPUT CURRENT (A)
E
70
80
75
90
85
65
55
95
V
OUT
= 1.5V
R
TOFF
= 62k
V
OUT
= 1.8V
R
TOFF
= 51k
V
OUT
= 2.5V
R
TOFF
= 39k
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(f
PWM
= 300kHz)
60
M
OUTPUT CURRENT (A)
E
70
80
75
90
85
65
55
95
V
OUT
= 1.8V
V
IN
= 3.3V
R
TOFF
= 160k
L = 2.5
μ
H
V
OUT
= 1.8V
V
IN
= 5.0V
R
TOFF
= 220k
L = 5.2
μ
H
M
3A, 1MHz, Low-Voltage, Step-Down Regulators with
Synchronous Rectification and Internal Switches
4
_______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 1, T
A
= +25
°
C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
CC
= +3.3V, FBSEL = GND,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Adjustable Output Voltage Range
V
CC
= V
IN
= +3V to +5.5V, I
LOAD
= 0, FBSEL
= GND
V
REF
V
IN
V
Reference Voltage
Current-Limit Threshold
Idle Mode Current Threshold
V
REF
I
LIMIT
I
IM
1.078
3.9
0.14
1.122
5.4
1.0
90
110
95
100
750
360
1.2
V
A
A
V
IN
= 4.5V
V
IN
= +3V
V
IN
= 4.5V
V
IN
= +3V
PMOS Switch On-Resistance
R
ON
,
P
I
LX
= 0.5A
NMOS Switch On-Resistance
R
ON
,
N
I
LX
= 0.5A
m
No-Load Supply Current
FB Input Bias Current
Off-Time
I
IN
+ I
CC
I
FB
t
OFF
V
FB
= 1.2V
V
FB
= 1.2V
R
TOFF
= 110k
μA
nA
μs
0
0.8
Note 2:
Not production tested.
Note 3:
Soft-start time is measured with respect to the number of cycles on LX.
Note 4:
This is a metal migration limit. Maximum output current may be limited by thermal capability to a lower value than this.
Note 5:
Specifications from 0
°
C to -40
°
C are guaranteed by design, not production tested.
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