Rainbow Electronics MAX1627 - Manual (Page 5)

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