Typical operating characteristics (continued) – Rainbow Electronics MAX1817 User Manual
Page 6
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 3, T
A
= +25°C, unless otherwise specified)
400
µs/div
MAIN LOAD TRANSIENT RESPONSE
MAX1817-08
A: V
OUT
, 100mV/div, AC-COUPLED
B: I
LOAD, OUT
, 50mA/div
V
IN
= 2.4V, V
OUT
= 3.3V
A
B
0
200
µs/div
LCD LOAD TRANSIENT RESPONSE
MAX1817-09
A: V
LCD
, 50mV/div, AC-COUPLED
B: I
LOAD, OUT
, 10mA/div
V
IN
= 2.4V, V
OUT
= 3.3V (NO LOAD), V
LCD
= 18V
A
B
0
400
µs/div
MAIN LINE TRANSIENT RESPONSE
MAX1817-10
A: V
OUT,
100mV/div, AC-COUPLED
B: V
IN,
1V/div
V
OUT
= 3.3V, I
LOAD,MAIN
= 20mA, V
ONLCD
= 0
A
B
2.4V
1.8V
200
µs/div
LCD LINE TRANSIENT RESPONSE
MAX1817-11
A: V
LCD
, 100mV/div, AC-COUPLED
B: V
IN,
1V/div
V
OUT
= 3.3V (NO LOAD), V
LCD
= 18V, I
LOAD,LCD
= 2mA
A
B
2.4V
1.8V
100
µs/div
MAIN OUTPUT TURN-ON/TURN-OFF
RESPONSE
MAX1817-12
A: V
OUT
, 2V/div
B: I
IN
,
500mA/div
C: V
ON
, 5V/div
V
IN
= 2.4V, R
LOAD,MAIN
= 165
Ω, V
ONLCD
= 0
A
B
0
0
0
C
400
µs/div
LCD OUTPUT TURN-ON/TURN-OFF
RESPONSE
MAX1817-13
A: V
LCD
, 10V/div
B: I
IN
,
200mA/div
C: V
ONLCD
, 5V/div
V
IN
= 2.4V, V
OUT
= 3.3V (NO LOAD), R
LOAD,LCD
= 9k
Ω
A
B
0
0
0
C