5V/3.3V or Adjustable, 100% Duty-Cycle,
High-Efficiency, Step-Down DC-DC Controllers
MAX1626/MAX1627
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
MAX1626 SHUTDOWN CURRENT
vs. TEMPERATURE
0.7
SHUTDOWN CURRENT (µA)
0.6
0.5
0.4
0.3
0.2
0.1
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
APPLICATION CIRCUIT
SHUTDOWN CURRENT:
A: V+ = +15V
B: V+ = +10V
C: V+ = +4V
MAX1626 SHUTDOWN
CURRENT:
D: V+ = +16V
E: V+ = +4V
A
MAX1626-04
MAX1626 EXT OFF TIME
vs. OUTPUT VOLTAGE
MAX1626-02
MAX1627 EXT OFF TIME
vs. FB PIN VOLTAGE
V+ = +5V
10
EXT OFF TIME (µs)
8
6
4
2
0
MAX1626-03
0.8
12
V+ = +5V
10
EXT OFF TIME (µs)
8
6
3/5 = V+
4
3/5 = GND
2
0
0
1
2
3
4
5
OUTPUT VOLTAGE (V)
12
B
C
D
E
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
FB PIN VOLTAGE (V)
EXT RISE AND FALL TIMES
vs. TEMPERATURE
45
40
t
RISE
AND t
FALL
(ns)
35
30
25
20
15
10
5
0
-60 -40 -20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
t
RISE
, t
FALL
, V+ = +15V
C
EXT
= 1nF
3/5 = 0V
OUT = 50kHz, 0.3Vp-p
,
3.3V
DC
t
FALL
, V+ = +5V
t
RISE
, V+ = +5V
MAX1626-09
EXT RISE AND FALL TIMES
vs. CAPACITANCE
350
t
RISE
AND t
FALL
(ns)
300
250
t
RISE
, V+ = +15V
200
t
FALL
, V+ = +5V
150
100
50
0
0
2000
CAPACITANCE (pF)
t
FALL
, V+ = +15V
4000
t
RISE
, V+ = +5V
MAX1626-10
50
400
MAX1626
V+ QUIESCENT CURRENT
vs. TEMPERATURE
MAX1626-01
CS TRIP LEVEL vs. TEMPERATURE
OUT = 0V
110
CS TRIP LEVEL (mV)
105
100
95
90
MAX1626-12
72
70
68
I
Q
(µA)
V+ = +10V
66
64
62
60
V+ = +4V
V+ = +16V
115
3/5 = 0V
OUT FORCED TO 3.4V
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
85
-60 -40 -20 0
20 40 60 80 100 120 140
TEMPERATURE (°C)
4
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
