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