MAX1771 Maxim, MAX1771 Datasheet - Page 2

• Manufacturer Part Number: MAX1771
• Description: 12V or Adjustable / High-Efficiency / Low IQ / Step-Up DC-DC Controller
• Manufacturer: Maxim

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ELECTRICAL CHARACTERISTICS
(V+ = 5V, I
12V or Adjustable, High-Efficiency,
Low I
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
EXT, CS, REF, SHDN, FB to GND ...................-0.3V, (V+ + 0.3V)
GND to AGND.............................................................0.1V, -0.1V
Continuous Power Dissipation (T
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.
2
Input Voltage Range
Minimum Start-Up Voltage
Supply Current
Standby Current
Output Voltage (Note 1)
Output Voltage Line Regulation
(Note 2)
Output Voltage Load Regulation
(Note 2)
Maximum Switch On-Time
Minimum Switch Off-Time
Efficiency
Reference Voltage
REF Load Regulation
REF Line Regulation
FB Trip Point Voltage
V+ to GND ...............................................................-0.3V, 17V
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
CERDIP (derate 8.00mW/°C above +70°C) .................640mW
_______________________________________________________________________________________
LOAD
PARAMETER
Q
= 0mA, T
, Step-Up DC-DC Controller
A
= T
MIN
A
= +70°C)
to T
SYMBOL
t
t
MAX
ON
OFF
V
V
(max)
REF
FB
(min)
, unless otherwise noted. Typical values are at T
MAX1771 (internal feedback resistors)
MAX1771C/E (external resistors)
MAX1771MJA (external resistors)
V+ = 16.5V, SHDN = 0V (normal operation)
V+ = 10.0V, SHDN ≥ 1.6V (shutdown)
V+ = 16.5V, SHDN ≥ 1.6V (shutdown)
V+ = 2.0V to 12.0V, over full load range,
Circuit of Figure 2a
V+ = 5V to 7V, V
I
V+ = 6V, V
500mA, Circuit of Figure 2a
V+ = 5V, V
Circuit of Figure 2a
I
0µA ≤ I
3V ≤ V+ ≤ 16.5V
MAX1771C
MAX1771E
MAX1771M
LOAD
REF =
DataSheet4U.com
= 700mA, Circuit of Figure 2a
0 A
REF
OUT
OUT
≤ 100µA
CONDITIONS
= 12V, I
= 12V, I
OUT
Operating Temperature Ranges
Junction Temperatures
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX1771C_ A .....................................................0°C to +70°C
MAX1771E_ A ..................................................-40°C to +85°C
MAX1771MJA ................................................-55°C to +125°C
MAX1771C_ A/E_ A.......................................................+150°C
MAX1771MJA ..............................................................+175°C
= 12V
LOAD
LOAD
MAX1771C
MAX1771E
MAX1771M
MAX1771C/E
MAX1771M
= 0mA to
= 500mA,
A
= +25°C.)
1.4700
1.4625
1.4550
1.4700
1.4625
1.4550
11.52
MIN
2.0
3.0
3.1
1.8
12
TYP
12.0
1.8
2.3
1.5
1.5
1.5
1.5
1.5
1.5
85
20
16
92
40
2
4
5
4
4
1.5300
1.5375
1.5450
1.5300
1.5375
1.5450
12.48
MAX
12.5
16.5
16.5
110
100
2.0
2.8
20
10
15
5
UNITS
mV/V
mV/A
µV/V
mV
%
V
V
V
V
V
A
A
s
s