Datasheet

MAX764/MAX765/MAX766
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
DC-DC Inverters
6 _______________________________________________________________________________________
CIRCUIT OF FIGURE 2, V
OUT
= -5V, I
LOAD
= 100mA
A: V
OUT
, 50mV/div, AC-COUPLED
B: V+, 5V TO 10V, 5V/div
5ms/div
LINE-TRANSIENT RESPONSE
A
B
0V
CIRCUIT OF FIGURE 2, V+ = 5V, V
OUT
= -5V, I
LOAD
= 140mA
A: OUTPUT RIPPLE, 100mV/div
B: INDUCTOR CURRENT, 500mA/div
C: LX WAVEFORM, 10V/div
5µs/div
DISCONTINUOUS CONDUCTION AT
HALF AND FULL CURRENT LIMIT
A
B
0A
C
0V
CIRCUIT OF FIGURE 2, V+ = 5V, I
LOAD
= 100mA, V
OUT
= -5V
A: V
OUT
, 2V/div
B: SHUTDOWN PULSE, 0V TO 5V, 5V/div
2ms/div
TIME TO ENTER/EXIT SHUTDOWN
A
B
0V
0V
CIRCUIT OF FIGURE 2, V+ = 5V, V
OUT
= -5V
A: V
OUT
, 50mV/div, AC-COUPLED
B: I
LOAD
, 0mA TO 100mA, 100mA/div
5ms/div
LOAD-TRANSIENT RESPONSE
A
B
0mA
____________________________Typical Operating Characteristics (continued)
(V+ = 5V, V
OUT
= -5V, T
A
= +25°C, unless otherwise noted.)