MAX1954EUB Datasheet Download

Part No.:
MAX1954EUB
Download:
Download Datasheet
Description:
[Low-Cost, High-Frequency, Current-Mode PWM Buck Controller]
File Size:
642 K
Page:
22 Pages
Logo:
Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
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Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
MAX1953/MAX1954/MAX1957
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
MAX1957
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1953 toc08
MAX1953
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1953 toc09
MAX1954
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1953 toc10
1.35
2.60
1.76
1.74
OUTPUT VOLTAGE (V)
1.72
1.70
1.68
1.66
I
LOAD
= 5A
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.30
2.55
I
LOAD
= 3A
2.50
I
LOAD
= 0
2.45
I
LOAD
= 0
1.25
V
IN
= 5V
1.20
1.15
-3
-2
-1
0
CIRCUIT OF FIGURE 3
1
2
3
CIRCUIT OF FIGURE 1
2.40
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
1.64
3.0
3.5
4.0
CIRCUIT OF FIGURE 2
4.5
5.0
5.5
LOAD CURRENT (A)
INPUT VOLTAGE (V)
MAX1954
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1953 toc11
MAX1957
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1953 toc12
2.52
2.51
OUTPUT VOLTAGE (V)
I
LOAD
= 0
2.50
2.49
2.48
2.47
CIRCUIT OF FIGURE 2
2.46
3.0
3.5
4.0
4.5
5.0
1.29
1.27
OUTPUT VOLTAGE (V)
I
LOAD
= 0
1.25
I
LOAD
= 5A
1.23
I
LOAD
= 3A
1.21
CIRCUIT OF FIGURE 3
1.19
5.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
MAX1953
FREQUENCY vs. INPUT VOLTAGE
MAX1953 toc13
MAX1954/MAX1957
FREQUENCY vs. INPUT VOLTAGE
315
310
FREQUENCY (kHz)
305
300
295
290
285
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
V
OUT
= 1.25V
MAX1953 toc14
320
1.06
1.04
V
OUT
= 2.5V
FREQUENCY (MHz)
T
A
= -40°C
1.02
1.00
0.98
0.96
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
T
A
= +85°C
T
A
= +25°C
280
275
270
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
_______________________________________________________________________________________
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