MAX1763 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1763 Datasheet PDF : 18 Pages
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1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
Typical Operating Characteristics
(Circuit of Figure 2, VIN = +3.6V, VOUT = +5V, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 3.3V)
100
90
80
BA
70
C
60
50
40
30
20
10
0
0.001
A: VIN = 2.4V
B: VIN = 1.2V
C: VIN = 0.9V
= NORMAL MODE
= FPWM MODE
0.01
0.1
1
10
OUTPUT CURRENT (A)
NO-LOAD INPUT
vs. INPUT VOLTAGE
0.1
= INPUT VOLTAGE INCREASING
= INPUT VOLTAGE DECREASING
0.01
0.001
0.0001
0
1
2
3
4
5
INPUT VOLTAGE (V)
STARTUP VOLTAGE
vs. OUTPUT CURRENT
4.1
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 5V)
100
90
A
80
B
70
60
C
50
40
30
20
10
0
0.001
A: VIN = 3.6V
B: VIN = 2.4V
C: VIN = 1.2V
= NORMAL MODE
= FPWM MODE
0.01
0.1
1
10
OUTPUT CURRENT (A)
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
10
1
0.1
0
1
2
3
45
6
INPUT VOLTAGE (V)
PEAK INDUCTOR CURRENT vs. VISET
3.0
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
3.0
2.5
2.0
VOUT = 3.3V
1.5
1.0
VOUT = 5V
0.5
0
0.8
1.6
2.4
3.2
4.0
INPUT VOLTAGE (V)
INTERNAL OSCILLATOR FREQUENCY
vs. TEMPERATURE
1.20
1.15
1.10
1.05
VIN = 3.6V, VOUT = 5V
1.00
VIN = 2.4V, VOUT = 3.3V
0.95
0.90
0.85
0.80
-40 -15
10
35
60
85
TEMPERATURE (°C)
HEAVY-LOAD SWITCHING WAVEFORMS
3.6
2.5
A
3.1
2.0
2.6
1.5
B
2.1
1.0
1.6
C
1.1
0.5
0.6
0.001 0.01
0.1
1
10
OUTPUT CURRENT (A)
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
ISET VOLTAGE (V)
400ns/div
VIN = 2.4V, VOUT = 3.3V, IOUT = 1.5A
A: INDUCTOR CURRENT, 500mA/div
B: VLX, 2V/div
C: VOUT, 100mV/div, AC COUPLED
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