MAX1771CSA+ Maxim, MAX1771CSA+ Datasheet - Page 4

• Manufacturer Part Number: MAX1771CSA+
• Description: Step-Up DC-DC Controller, 2.0-16.5 Vin, 12 V or Adj. Vout, 0 to 70 C, SOIC8
• Manufacturer: Maxim

Specifications of MAX1771CSA+

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

12V or Adjustable, High-Efficiency,
Low I
(T
4
A
250
200
150
100
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
50
0
0
4
3
2
1
0
-75 -50 -25
-60
-60
SHUTDOWN CURRENT vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
REFERENCE OUTPUT RESISTANCE vs.
V
CIRCUIT OF FIGURE 2a
BOOTSTRAPPED MODE
OUT
-40
-40
= 12V, V
-20
V+ = 4V
-20
SCHOTTKY DIODE
LEAKAGE EXCLUDED
Q
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
V+ = 8V
TEMPERATURE
0
, Step-Up DC-DC Controller
IN
0
20
20
= 5V
25
50µA
40
40
ENTIRE
CIRCUIT
60
60
50
10µA
80
V+ = 15V
80
75 100 125
100
100
100µA
120
120
140
140
1.506
1.504
1.502
1.500
1.498
1.496
1.494
1.492
2.20
2.30
2.25
Typical Operating Characteristics (continued)
0.8
0.6
0.4
0.2
0
-60 -30
-60
SUPPLY CURRENT vs. SUPPLY VOLTAGE
2
NON-BOOTSTRAPPED
CIRCUIT OF FIGURE 2b
-40
MINIMUM SWITCH OFF-TIME vs.
REFERENCE vs. TEMPERATURE
-20
4
SUPPLY VOLTAGE (V)
0
TEMPERATURE (°C)
TEMPERATURE (°C)
0
TEMPERATURE
BOOTSTRAPPED
CIRCUIT OF
FIGURE 2a
6
20
30
40
60
8
60
V
80
90
OUT
10
100
= 12V
120 150
120
12
140
16.5
16.0
15.5
6.0
250
200
150
100
8.0
7.5
7.0
6.5
50
0
EXT RISE/FALL TIME vs. SUPPLY VOLTAGE
-60 -30
-60 -30
2
MINIMUM SWITCH OFF-TIME RATIO
MAXIMUM SWITCH ON-TIME vs.
MAXIMUM SWITCH ON-TIME/
4
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
0
0
TEMPERATURE (°C)
TEMPERATURE
6
30
30
C
C
C
C
EXT
EXT
EXT
EXT
60
60
= 2200pF
= 1000pF
= 446pF
= 100pF
8
90
90
10
120 150
120 150
12