MAX756CPA+ Maxim Integrated Products, MAX756CPA+ Datasheet - Page 7

• Manufacturer Part Number: MAX756CPA+
• Description: IC DC/DC CONV STP-UP 3.3/5V 8DIP
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX756CPA+

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 5V
• Current - Output: 300mA
• Frequency - Switching: 500kHz
• Voltage - Input: 0.7 ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Power - Output: 727mW
• Output Voltage: 5.5 V
• Output Current: 0.3 mA
• Input Voltage: 5.5 V
• Supply Current: 0.06 A
• Switching Frequency: 500 KHz
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The ESR of both bypass and filter capacitors affects
efficiency. Best performance is obtained by using spe-
cialized low-ESR capacitors, or connecting two or more
filter capacitors in parallel. The smallest low-ESR SMT
tantalum capacitors currently available are Sprague
595D series, which are about half the size of competing
products. Sanyo OS-CON organic semiconductor
through-hole capacitors also exhibit very low ESR, and
are especially useful for operation at cold tempera-
tures. Table 1 lists suggested capacitor suppliers.
Figure 2. MAX756 Block Diagram
SHDN
LBO
LBI
3/5
_______________________________________________________________________________________
MAXIMUM
ONE-SHOT
ON-TIME
TRIG
ONE-SHOT
ONE-SHOT
MINIMUM
OFF-TIME
N
Q
S
Q
MAX756
ONE-SHOT
F/F
R
3.3V/5V/Adjustable-Output,
Step-Up DC-DC Converters
TRIG
Q
For optimum performance, a switching Schottky diode,
such as the 1N5817, is recommended. 1N5817 equiv-
alent diodes are also available in surface-mount pack-
ages from Collmer Semiconductor in Dallas, TX, phone
[phone]. The part numbers are SE014 or
SE024. For low output power applications, a pn junc-
tion switching diode, such as the 1N4148, will also
work well, although efficiency will suffer due to the
greater forward voltage drop of the pn junction diode.
REFERENCE
N
LX
GND
OUT
REF
Rectifier Diode
V
IN
V
OUT
7