5 V/3 .3 V o r Ad ju s t a b le , 1 0 0 % Du t y-Cyc le ,
Hig h -Effic ie n c y, S t e p -Do w n DC-DC Co n t ro lle rs
/MAX1627
____________________________Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(Circuit of Figure 1, T = +25°C, unless otherwise noted.)
A
REFERENCE OUTPUT VOLTAGE
MAX1626 SHUTDOWN RESPONSE TIME
AND SUPPLY CURRENT
vs. TEMPERATURE
1.310
1.305
A
B
C
I
= 0µA
REF
I
= 10µA
REF
1.300
1.295
1.290
I
= 50µA
REF
I
= 100µA
REF
1.285
1.280
-60 -40 -20
0
20 40 60 80 100 120 140
500µs/div
TEMPERATURE (°C)
V+ = 8V, V
OUT
= 5V, LOAD = 1A
A: OUT, 2V/div
B: SUPPLY CURRENT, 1A/div
C: SHDN, 5V/div
LINE-TRANSIENT RESPONSE
FROM 100% DUTY CYCLE
MAX1626 LINE-TRANSIENT RESPONSE
MAX1626 LOAD-TRANSIENT RESPONSE
A
B
A
B
A
B
5ms/div
100µs/div
5ms/div
V
= 5V, LOAD = 1A, C = 33µF
IN
OUT
V+ = 8V, V
OUT
A: OUT, 50mV/div, 3.3V DC OFFSET
B: LOAD CURRENT, 1A/div
= 3.3V, LOAD = 30mA to 2A
V
= 3.3V, LOAD = 1A, C = 47µF
OUT
IN
A: OUT, 100mV/div, 5V DC OFFSET
B: V+ 6V to 12V, 2V/div
A: OUT, 100mV/div, 3.3V DC OFFSET
B: V+ 3.3V to 15V, 5V/div
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
