-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
Inverting DC-DC Controllers
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER
Efficiency
(Circuit of Figure 2—
Bootstrapped)
SHDN Input Current
SHDN Input Voltage High
SHDN Input Voltage Low
Current-Limit Trip Level
(V+ – CS)
CS Input Current
Switch Maximum On-Time
Switch Minimum Off-Time
EXT Rise Time
EXT Fall Time
t
ON
(max)
t
OFF
(max)
V+ = 12V
V+ = 12V
C
EXT
= 1nF, V+ = 12V
C
EXT
= 1nF, V+ = 12V
12
1.8
16
2.3
50
50
V
IH
V
IL
V
CS
SYMBOL
CONDITIONS
MAX774, V+ = 5V, I
LOAD
= 1A
MAX775, V+ = 5V, I
LOAD
= 500mA
MAX776, V+ = 5V, I
LOAD
= 400mA
V+ = 16.5V, SHDN = 0V or V+
3V
≤
V+
≤
16.5V
3V
≤
V+
≤
16.5V
MAX77_C/E
3V
≤
V+
≤
16.5V
MAX77_M
MIN
TYP
82
88
87
±1
1.6
180
160
210
210
0.4
240
260
±1
20
2.8
MAX
UNITS
%
µA
V
V
mV
µA
µs
µs
ns
ns
MAX774/MAX775/MAX776
3
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
