MAX1626 Datasheet, PDF (5/16 Pages) Maxim Integrated Products – 5V/3.3V or Adjustable, 100% Duty-Cycle, High-Efficiency, Step-Down DC-DC Controllers

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