MAX8668 查看數據表（PDF） - Maxim Integrated
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MAX8668 Datasheet PDF : 18 Pages
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1.5MHz Dual Step-Down DC-DC Converters
with Dual LDOs and Individual Enables
Typical Operating Characteristics (continued)
(VIN12 = VIN34 = 3.6V, circuit of Figure 4, VOUT1 = 1.2V, VOUT2 = 1.8V, VOUT3 = 2.8V, VOUT4 = 2.8V, TA = +25°C, unless otherwise noted.)
OUT2 HEAVY-LOAD SWITCHING
WAVEFORMS
MAX8667/88 toc23
VOUT2
20mV/div
VLX2
2V/div
IL2
500mA LOAD
400ns/div
500mA/div
OUT3 NOISE
MAX8667/88 toc25
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
70
VOUT3 = 2.80V
60
ILOAD = 100Ω
COUT3 = 4.7µF
50
40
30
20
10
0
0.01 0.1
1
10 100 1000
FREQUENCY (kHz)
OUT4 NOISE
MAX8667/88 toc26
100µV/div
1ms/div
VOUT3 = 2.80V
ILOAD = 100Ω
100µV/div
1ms/div
VOUT4 = 3.30V
ILOAD = 100Ω
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