MAX773ESD+ Maxim Integrated Products, MAX773ESD+ Datasheet - Page 4

• Manufacturer Part Number: MAX773ESD+
• Description: IC CNTRLR DC-DC 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX773ESD+

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V, 12V, 15V, Adj
• Current - Output: 1A
• Frequency - Switching: 300kHz
• Voltage - Input: 3 ~ 16.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Power - Output: 667mW
• Output Voltage: 5 V, 12 V, 15 V, 3 V
• Output Current: 1 A
• Input Voltage: 3 V to 16.5 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5V/12V/15V or Adjustable, High-Efficiency,
Low I
(T
4
__________________________________________Typical Operating Characteristics
A
100
= +25°C, unless otherwise noted.)
100
_______________________________________________________________________________________
90
80
70
60
50
70
80
90
0
4
3
2
1
0.001
-75 -50 -25
SUPPLY CURRENT vs. TEMPERATURE
V
CIRCUIT OF
FIGURE 2c
0.001
V
CIRCUIT OF FIGURE 2b
BOOTSTRAPPED MODE
EFFICIENCY vs. OUTPUT CURRENT
EFFICIENCY vs. OUTPUT CURRENT
OUT
OUT
= 12V
= 12V, V
0.01
Q
(NON-BOOTSTRAPPED)
SCHOTTKY DIODE
LEAKAGE EXCLUDED
V
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
IN
(BOOTSTRAPPED)
TEMPERATURE (°C)
V
, Step-Up DC-DC Controllers
= 4V
IN
0.01
IN
0
= 3V
MAX770
MAX771
= 5V
0.1
25
V
IN
ENTIRE
CIRCUIT
= 3.5V
50
0.1
V
CIRCUIT OF
FIGURE 2a
75 100 125
OUT
1
V
V
V
IN
IN
IN
= 5V
= 6V
= 9V
= 5V
10
1
700
600
500
400
300
200
100
100
0.8
0.6
0.4
0.2
80
70
60
90
50
0
0
0.001
1.0
SUPPLY CURRENT vs. SUPPLY VOLTAGE
2
MINIMUM START-UP INPUT VOLTAGE
MINIMUM START-UP INPUT VOLTAGE (V)
NON-BOOTSTRAPPED
CIRCUIT OF FIGURE 2c
EFFICIENCY vs. OUTPUT CURRENT
V
V
CIRCUIT OF
FIGURE 2a
IN
OUT
= 9V
1.5
4
= 5V
V
IN
LOAD CURRENT vs.
SUPPLY VOLTAGE (V)
OUTPUT CURRENT (A)
(BOOTSTRAPPED)
V
= 5V
0.01
IN
BOOTSTRAPPED
CIRCUIT OF
FIGURE 2b
V
2.0
= 3V
6
MAX770
IN
MAX771
= 6V
2.5
8
0.1
ABOVE 3.4V,
THE CIRCUIT
STARTS UP
UNDER
MAXIMUM
LOAD
CONDITIONS
V
OUT
V
CIRCUIT OF
FIGURE 2b
OUT
10
3.0
= 12V
= 12V
12
3.5
1
100
500
400
300
200
250
200
150
100
100
50
90
80
70
60
50
0
0
EXT RISE/FALL TIME vs. SUPPLY VOLTAGE
2.0
2
MINIMUM START-UP INPUT VOLTAGE
MINIMUM START-UP INPUT VOLTAGE (V)
V
MAX772 SUBSTITUTED FOR MAX771
EFFICIENCY vs. OUTPUT CURRENT
OUT
V
CIRCUIT OF
FIGURE 2b
OUT
= 15V, CIRCUIT OF FIGURE 2b
0.001
4
= 12V
2.5
OUTPUT CURRENT (A)
LOAD CURRENT vs.
(BOOTSTRAPPED)
6
MAX772
MAX771
C
C
C
C
V+ (V)
0.01
EXT
EXT
EXT
EXT
3.0
= 2200pF
= 1000pF
= 446pF
= 100pF
8
ABOVE 3.5V
THE CIRCUIT
STARTS UP
UNDER
MAXIMUM
LOAD
CONDITIONS
V
V
V
V
0.1
V
3.5
IN
IN
IN
IN
IN
10
= 12V
= 9V
= 6V
= 3V
= 5V
12
4.0
1