MAX1945SEUI Maxim Integrated Products, MAX1945SEUI Datasheet - Page 8

• Manufacturer Part Number: MAX1945SEUI
• Description: DC/DC Switching Regulators 1MHz 1% 6A Step-Down PWM
• Manufacturer: Maxim Integrated Products

Specifications of MAX1945SEUI

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1MHz, 1% Accurate, 6A Internal Switch
Step-Down Regulators
(V
8
IN
2.030
2.025
2.020
2.015
2.010
2.005
2.000
100
3.0
2.5
2.0
1.5
1.0
0.5
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
= V
0
0
0
0
0
CC
f
SW
A: V
B: V
C: V
D: V
E: V
EFFICIENCY vs. OUTPUT CURRENT
vs. REFERENCE SOURCE CURRENT
4
= 500kHz
= 5V, V
OUT
OUT
OUT
OUT
OUT
1
OUTPUT LOAD REGULATION
1
8
= 3.3V
= 0.8V
= 1.5V
= 1.8V
= 2.5V
REFERENCE VOLTAGE
A
B
2
12
V
2
OUT
IN
16
= V
I
3
I
REF
I
OUT
OUT
C
= 1.8V, I
20
3
CC
(µA)
(A)
(A)
2.5V
4
= 5V
24
D
4
28
V
f
SW
f
5
IN
SW
1.8V
0.8V
OUT
= V
= 500kHz
32
= 500kHz
E
CC
5
6
= 6A, f
36
= 5V
40
7
6
SW
= 500kHz, V
100
550
540
530
520
510
500
490
480
470
90
80
70
60
50
40
30
20
10
14
12
10
0
8
6
4
2
0
FREQUENCY vs. INPUT VOLTAGE (500kHz)
2.5
2.5
0
A: V
B: V
C: V
D: V
EFFICIENCY vs. OUTPUT CURRENT
SHUTDOWN SUPPLY CURRENT
A
OUT
OUT
OUT
OUT
1
3.0
3.0
DD
+85°C
= 0.8V
= 1.5V
= 1.8V
= 2.5V
vs. INPUT VOLTAGE
+25°C
2
V
= V
3.5
3.5
IN
B
= V
CC
3
I
OUT
V
V
-40°C
IN
IN
CC
4.0
4.0
, and T
(V)
(V)
(A)
= 3.3V
Typical Operating Characteristics
C
4
4.5
4.5
V
f
SW
IN
A
5
f
= V
= 500kHz
SW
= +25°C, unless otherwise noted.)
D
CC
= 500kHz
5.0
5.0
= 3.3V
6
5.5
5.5
7
1.050
1.025
1.000
0.975
0.950
0.925
0.900
100
90
80
70
60
50
40
30
20
10
14
13
12
11
10
0
9
8
7
6
2.5
FREQUENCY vs. INPUT VOLTAGE (1MHz)
0.8
0
f
A: V
B: V
C: V
SW
EFFICIENCY vs. OUTPUT CURRENT
= 500kHz
OUT
OUT
OUT
3.0
1
1.3
A
= 0.8V
= 1.5V
= 1.8V
vs. OUTPUT VOLTAGE
V
IN
2
3.5
CURRENT LIMIT
= 2.5V, V
1.8
V
3
I
V
OUT
+25°C
+85°C
OUT
-40°C
IN
B
4.0
(V)
(A)
(V)
4
V
f
2.3
CC
SW
IN
4.5
= 2.5V, V
= 500kHz
= 5V
5
2.8
C
5.0
CC
6
= 5V
5.5
3.3
7