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MAX774CPA View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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MAX774CPA Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low IQ Inverting DC-DC Controllers
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
OPERATING WAVEFORMS
INDUCTOR CURRENT NEAR FULL LOAD
A
1A/div
B
0A
C
10µs/div
CIRCUIT OF FIGURE 2
V+ = 6.5V, ILOAD = 1A, VOUT = -5V
A: OUTPUT RIPPLE, 200mV/div
B: EXT WAVEFORM, 10V/div
C: INDUCTOR CURRENT, 2A/div
CONTINUOUS CONDUCTION
AT ONE-HALF CURRENT LIMIT
CIRCUIT OF FIGURE 2
VOUT = -5V, V+ = 4.7V
ILOAD = 1.05A (1A/div)
20µs/div
ENTRY/EXIT FROM SHUTDOWN
A
1A/div
B
0A
20µs/div
CIRCUIT OF FIGURE 2
ILOAD = 300mA, VOUT = -5V
V+ = 8V, L = 22µH
2ms/div
CIRCUIT OF FIGURE 2
V+ = 6V, ILOAD = 1A, VOUT = -5V
A: SHUTDOWN PULSE, 0V TO V+, 5V/div
B: VOUT, 2V/div
_______________________________________________________________________________________ 7
 

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