MAX639CPA Maxim Integrated Products, MAX639CPA Datasheet - Page 2
MAX639CPA
Manufacturer Part Number
MAX639CPA
Description
IC DC/DC CONV STEP-DOWN 5V 8-DIP
Manufacturer
Maxim Integrated Products
Type
Step-Down (Buck)r
Datasheet
1.MAX639CPA.pdf
(13 pages)
Specifications of MAX639CPA
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V, 1.3 ~ 11.5 V
Current - Output
225mA
Voltage - Input
4 ~ 11.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Power - Output
727mW
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Frequency - Switching
-
Other names
Q724982
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX639CPA
Manufacturer:
MAXIM
Quantity:
5 510
Company:
Part Number:
MAX639CPA
Manufacturer:
ROCKWELL
Quantity:
5 510
Company:
Part Number:
MAX639CPA+
Manufacturer:
UMC
Quantity:
6 255
ABSOLUTE MAXIMUM RATINGS
5V/3.3V/3V/Adjustable, High-Efficiency,
Low I
V+...........................................................................................12V
LX .........................................................(V+ - 12V) to (V+ + 0.3V)
LBI, LBO, VFB, SHDN, VOUT........................-0.3V to (V+ + 0.3V)
LX Output Current (Note 1) ......................................................1A
LBO Output Current ............................................................10mA
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(V+ = 9V for the MAX639, V+ = 5V for the MAX640/MAX653, I
unless otherwise noted.)
Note 1: Peak inductor current must be limited to 600mA by using an inductor of 100µH or greater.
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
Supply Voltage
Supply Current
Output Voltage (Note 2)
Dropout Voltage
Efficiency
Switch On-Time
Switch Off-Time
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
_______________________________________________________________________________________
PARAMETER
Q
, Step-Down DC-DC Converters
A
= +70°C)
SHDN = V+, no load
MAX639, V+ = 6.0V to 11.5V, 0mA < I
MAX640, V+ = 4.0V to 11.5V, 0mA < I
MAX653, V+ = 4.0V to 11.5V, 0mA < I
I
MAX639
MAX640
MAX653
MAX639
MAX640
MAX653
MAX639
MAX640
MAX653
OUT
= 100mA, L = 100µH
CONDITIONS
LOAD
I
I
I
I
I
I
V+ = 9V, V
V+ = 6V, V
V+ = 9V, V
V+ = 4V, V
V+ = 9V, V
V+ = 4V, V
V+ = 9V, V
V+ = 6V, V
V+ = 9V, V
V+ = 4V, V
V+ = 9V, V
V+ = 4V, V
OUT
OUT
OUT
OUT
OUT
OUT
= 0mA, T
Operating Temperature Ranges:
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
= 100mA, L = 100µH
= 25mA, L = 470µH
= 100mA, L = 100µH
= 25mA, L = 470µH
= 100mA, L = 100µH
= 25mA, L = 470µH
MAX639C_ _ .......................................................0°C to +70°C
MAX639E_ _ ....................................................-40°C to +85°C
MAX639MJA ..................................................-55°C to +125°C
OUT
OUT
OUT
A
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
< 100mA
< 100mA
< 100mA
= T
= 5V
= 3V
= 3.3V
= 3.3V
= 3V
= 3V
= 5V
= 3V
= 3.3V
= 3.3V
= 3V
= 3V
MIN
to T
MAX
, typical values are at T
4.80
3.17
2.88
10.6
14.2
60.7
42.5
16.6
13.3
13.3
14.6
14.6
MIN
4.0
7.5
7.1
9.0
TYP
5.00
3.30
3.00
12.5
16.7
71.4
50.0
11.7
19.5
15.6
15.6
17.2
17.2
0.5
8.8
8.3
10
91
94
87
91
85
89
MAX
11.5
5.20
3.43
3.12
14.4
19.2
10.1
82.1
57.5
13.5
22.4
17.9
17.9
19.8
19.8
9.5
A
20
= +25°C,
UNITS
µA
µs
µs
%
V
V
V