MAX1952ESA 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1952ESA
Maxim Integrated
MAX1952ESA Datasheet PDF : 15 Pages
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1MHz, All-Ceramic, 2.6V to 5.5V Input,
2A PWM Step-Down DC-to-DC Regulators
Typical Operating Characteristics
(Typical values are at VIN = VCC = 5V, VOUT = 1.5V, IOUT = 1.5A, and TA = +25°C, unless otherwise noted. See Figure 2.)
EFFICIENCY vs. LOAD CURRENT
(VCC = VIN = 5V)
100
VOUT = 3.3V
90
80
70
VOUT = 2.5V
60
50
VOUT = 1.5V
40
30
VOUT = 0.8V
20
10
0
10
100
1000
10,000
LOAD CURRENT (mA)
EFFICIENCY vs. LOAD CURRENT
(VCC = VIN = 3.3V)
100
VOUT = 2.5V
90
80
70
VOUT = 1.8V
60
VOUT = 1.5V
50
40
30
VOUT = 0.8V
20
10
0
10
100
1000
10,000
LOAD CURRENT (mA)
REF VOLTAGE
vs. REF OUTPUT CURRENT
1.995
1.994
1.993
1.992
TA = +85°C
TA = +25°C
1.991
1.990
TA = -40°C
1.989
0
5 10 15 20 25 30 35 40
REF OUTPUT CURRENT (μA)
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
1.20
1.15
1.10
TA = +85°C
1.05
1.00
0.95
TA = +25°C
0.90
TA = -40°C
0.85
0.80
2.6 3.1 3.6 4.1 4.6 5.1 5.6
INPUT VOLTAGE (V)
OUTPUT VOLTAGE DEVIATION
vs. LOAD CURRENT
6
5
4
3
2
VOUT = 2.5V
VOUT = 3.3V
1
0
-1
-2
-3
VOUT = 0.8V
VOUT = 1.8V
-4
-5
-6
0
0.4
0.8
1.2
1.6
LOAD CURRENT (A)
LOAD-TRANSIENT RESPONSE
MAX1951 toc06
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
LOAD-TRANSIENT RESPONSE
MAX1951 toc07
OUTPUT VOLTAGE:
100mV/div,
AC-COUPLED
OUTPUT CURRENT:
0.5A/div
OUTPUT CURRENT:
0.5A/div
0A
VIN = 5V
VOUT = 2.5V
0A
VIN = 3.3V
VOUT = 1.5V
IOUT = 0.5 TO 1A
IOUT = 0.5 TO 1A
40μs/div
40μs/div
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