Rainbow Electronics MAX1729 - Manual (Page 5)

MAX1729
ECB and LCD Display Bias Supply with Accurate
Output Voltage and Temperature Compensation
_______________________________________________________________________________________ 5
5ms/div
DELAY TO SHUTDOWN
V CTLIN
5V/div
V REF
1V/div
V TC
1V/div
V OUT
10V/div
MAX1729 toc 09b
V IN = 5V
I O = 0.5mA
2 µ s/div
SWITCHING WAVEFORMS
HEAVY LOAD
I L
20mA/div
OUTPUT
RIPPLE
10mV/div
V LX
5V/div
MAX1729 toc 10
2 µ s/div
SWITCHING WAVEFORMS
MEDIUM LOAD
I L
20mA/div
OUTPUT
RIPPLE
10mV/div
V LX
5V/div
MAX1729 toc 11
Typical Operating Characteristics (continued)
(Circuit of Figure 2, T A = +25°C, unless otherwise noted.)
1ms/div
LOAD-TRANSIENT RESPONSE
V OUT
20mV/div
I OUT
250 µ A/div
20 µ A
500 µ A
16.400
16.404
MAX1729 toc 13
2ms/div
LINE-TRANSIENT RESPONSE
V OUT
20mV/div
V IN
1V/div
4V
5V
MAX1729 toc 14
CTLIN = IN
I
OUT = 0.5mA