MAX726 데이터 시트보기 (PDF) - Maxim Integrated
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MAX726 Datasheet PDF : 13 Pages
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5A/2A Step-Down, PWM,
Switch-Mode DC-DC Regulators
____________________________Typical Operating Characteristics (continued)
REFERENCE VOLTAGE
vs. JUNCTION TEMPERATURE
2.25
2.24
2.23
2.22
2.21
2.20
2.19
2.18
2.17
-40 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
SWITCHING FREQUENCY
vs. JUNCTION TEMPERATURE
120
115
110
105
100
95
90
85
80
-40 -25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
SWITCH-ON VOLTAGE
vs. SWITCH CURRENT
3.0
Tj = +25°C
2.5
MAX724
2.0
1.5
1.0
MAX726
0.5
0
1
2
3
4
56
SWITCH CURRENT (A)
ERROR-AMPLIFIER PHASE AND gM
8000
200
7000
150
PHASE
6000
100
5000
4000
50
gM
0
3000
-50
2000
-100
1000
-150
0
1k
10k
100k
1M
FREQUENCY (Hz)
-200
10M
SWITCHING FREQUENCY
vs. FEEDBACK PIN VOLTAGE
160
140
+125°C
120
100
80
-40°C
+25°C
60
40
20
0
0
0.5 1.0 1.5 2.0 2.5 3.0
FB VOLTAGE (V)
FEEDBACK PIN CURRENT
vs. FB VOLTAGE
500
400
300
START OF FREQUENCY
200 SHIFTING
100
0
-100
-200
-300
-400
-500
01
2 3 4 5 6 7 8 9 10
FB VOLTAGE (V)
OUTPUT CURRENT LIMIT
vs. TEMPERATURE
8
7
MAX724
6
5
4
3
MAX726
2
1
0
-40 -25 0
25 50 75 100 125
JUNCTION TEMPERATURE (°C)
4 _______________________________________________________________________________________
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