5V/3.3V or Adjustable, 100% Duty-Cycle,
High-Efficiency, Step-Down DC-DC Controllers
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
MAX1626/MAX1627
REFERENCE OUTPUT VOLTAGE
vs. TEMPERATURE
MAX1626-13
MAX1626 SHUTDOWN RESPONSE TIME
AND SUPPLY CURRENT
MAX1626-14
1.310
REFERENCE OUTPUT VOLTAGE (V)
1.305
1.300
1.295
I
REF
= 50µA
1.290
1.285
1.280
-60 -40 -20 0
I
REF
= 100µA
I
REF
= 0µA
I
REF
= 10µA
A
B
C
20 40 60 80 100 120 140
500µs/div
V+ = 8V, V
OUT
= 5V, LOAD = 1A
A: OUT, 2V/div
B: SUPPLY CURRENT, 1A/div
C: SHDN, 5V/div
TEMPERATURE (°C)
MAX1626 LOAD-TRANSIENT RESPONSE
MAX1626-15
MAX1626 LINE-TRANSIENT RESPONSE
MAX1626-16
LINE-TRANSIENT RESPONSE
FROM 100% DUTY CYCLE
MAX1626-17
A
A
A
B
B
B
100µs/div
V+ = 8V, V
OUT
= 3.3V, LOAD = 30mA to 2A
A: OUT, 50mV/div, 3.3V DC OFFSET
B: LOAD CURRENT, 1A/div
5ms/div
V
OUT
= 5V, LOAD = 1A, C
IN
= 33µF
A: OUT, 100mV/div, 5V DC OFFSET
B: V+ 6V to 12V, 2V/div
5ms/div
V
OUT
= 3.3V, LOAD = 1A, C
IN
= 47µF
A: OUT, 100mV/div, 3.3V DC OFFSET
B: V+ 3.3V to 15V, 5V/div
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
