MAX1627 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1627
Maxim Integrated
MAX1627 Datasheet PDF : 16 Pages
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MAX1626/MAX1627
5V/3.3V or Adjustable,
100% Duty-Cycle, High-Efficiency,
Step-Down DC-DC Controllers
Electrical Characteristics
PARAMETER
Input Voltage
Supply Current into V+
Undervoltage Lockout
Output Voltage
OUT Input Current
FB Threshold Voltage
FB Leakage Current
CS Threshold Voltage
Reference
SYMBOL
V+
IOUT
CONDITIONS
Operating, no load
V+ = SHDN = 16.5V (shutdown)
VOUT
IOUT
Circuit of Figure 1, 3/5 = V+
Circuit of Figure 1, 3/5 = 0V
MAX1626, 3/5 = V+, output forced to 5V
MAX1627, includes hysteresis
MAX1627
ILOAD = 0µA
Note 1: V+ must exceed VOUT to maintain regulation.
Note 2: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
MIN TYP MAX UNITS
3.0
16.5
V
100
µA
2
2.9
V
4.80
5.20
V
3.16
3.44
24
50
µA
1.25
1.35
V
0
50
nA
80
120
mV
1.25
1.35
V
Typical Operating Characteristics
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
DROPOUT VOLTAGE
vs. LOAD CURRENT
3.3V SETTING
VOUT = +3.17V
5V SETTING
VOUT = +4.8V
0.5 1.0 1.5 2.0 2.5
LOAD (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT = +3.3V)
100
90
BC
A
80
70
60
DE F
50
40
A: V+ = +4.3V
30
B: V+ = +5V
C: V+ = +8V
20
D: V+ = +10V
10
CIRCUIT OF FIGURE 1
0
E: V+ = +12V
F: V+ = +15V
0.1m 1m 10m 100m 1
10
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT = +5V)
100
BC
90
A
80
70
DE
60
50
40
A: V+ = +6V
30
B: V+ = +8V
20
C: V+ = +10V
10
CIRCUIT OF FIGURE 1
0
D: V+ = +12V
E: V+ = +15V
0.1m 1m 10m 100m 1
10
LOAD CURRENT (A)
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