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MAX1649 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX1649
Description  5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX1649 Datasheet(HTML) 2 Page - Maxim Integrated Products

 
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5V/3.3V or Adjustable, High-Efficiency,
Low-Dropout, Step-Down DC-DC Controllers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = 5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
1.4625
1.5
1.5375
FB Trip Point
1.470
1.5
1.530
V
I+
15
FB Input Current
IFB
±50
nA
±70
Output Voltage
VOUT
4.80
5.0
5.20
V
Supply Current
V+ Input Voltage Range
V+
3.0
16
V
78
100
µA
2
3.17
3.3
3.43
Reference Voltage
VREF
1.470
1.5
1.530
V
1.4625
1.5
1.5375
REF Load Regulation
mV
410
CONDITIONS
MAX1649E, MAX1651E
Circuit of
Figure 1
MAX1649C, MAX1651C
V+ = 10V, SHDN
≥ 1.6V (shutdown)
MAX1649C, MAX1651C
MAX1649C, MAX1651C, IREF = 0µA
MAX1649E, MAX1651E
MAX1649E, MAX1651E, IREF = 0µA
VOUT < V+
V+ = 16V, SHDN
≤ 0.4V (operating, switch off)
V+ = 16V, SHDN
≥ 1.6V (shutdown)
Supply Voltage, V+ to GND.......................................-0.3V, +17V
REF, SHDN, FB, CS, EXT, OUT .......................-0.3V, (V+ + 0.3V)
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C) ..........................471mW
Operating Temperature Ranges
MAX1649C_A, MAX1651C_A ..............................0°C to +70°C
MAX1649E_A, MAX1651E_A ............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX1649, V+ = 5.5V to 16V
MAX1651, V+ = 3.6V to 16V
0µA
≤ IREF ≤ 100µA, sourcing only
3V
≤ V+ ≤ 16V
REF Line Regulation
40
100
µV/V
2.6
mV/V
1.7
Output Voltage
Line Regulation
Circuit of
Figure 1
MAX1649, 5.5V
≤ V+ ≤ 16V,
ILOAD = 1A
MAX1651, 3.6V
≤ V+ ≤ 16V,
ILOAD = 1A
-47
mV/A
MAX1649, 0A
≤ ILOAD ≤ 1.5A,
VIN = 10V
MAX1651, 0A
≤ ILOAD ≤ 1.5A,
VIN = 5V
-45
Output Voltage
Load Regulation
Circuit of
Figure 1
90
%
MAX1649, V+ = 10V,
ILOAD = 1A
MAX1651, V+ = 5V,
ILOAD = 1A
90
Efficiency
Circuit of
Figure 1
SHDN Input Current
V+ = 16V, SHDN = 0V or V+
1
µA
SHDN Input Voltage High
VIH
3V
≤ V+ ≤ 16V
1.6
V
SHDN Input Voltage Low
VIL
3V
≤ V+ ≤ 16V
0.4
V


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