Datasheet

1A, 76V, High-Efficiency MAXPower
Step-Down DC-DC Converter
ABSOLUTE MAXIMUM RATINGS
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.
(Voltages referenced to GND, unless otherwise specified.)
V
IN
.........................................................................-0.3V to +80V
SGND ....................................................................-0.3V to +0.3V
LX.................................................................-0.8V to (V
IN
+ 0.3V)
BST ...............................................................-0.3V to (V
IN
+ 10V)
BST (transient < 100ns)................................-0.3V to (V
IN
+ 15V)
BST to LX................................................................-0.3V to +10V
BST to LX (transient < 100ns) ................................-0.3V to +15V
ON/OFF ..................................................................-0.3V to +80V
VD...........................................................................-0.3V to +12V
FB
MAX5035A/MAX5035B/MAX5035C ...................-0.3V to +15V
MAX5035D/E ......................................................-0.3V to +12V
V
OUT
Short-Circuit Duration (V
IN
≤ 40V)........................Indefinite
VD Short-Circuit Duration ..............................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
8-Pin PDIP (derate 9.1mW/°C above +70°C)...............727mW
8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW
Operating Temperature Range
MAX5035_U_ _ ...................................................0°C to +85°C
MAX5035_A_ _ ..............................................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-free...............................................................+260°C
Containing lead(Pb) .....................................................+240°C
ELECTRICAL CHARACTERISTICS (MAX5035_U_ _)
(V
IN
= +12V, V
ON/OFF
= +12V, I
OUT
= 0, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C. See the
Typical Application Circuit. )
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX5035A 7.5 76.0
MAX5035B 7.5 76.0
MAX5035C 15 76
Input Voltage Range V
IN
MAX5035D/E 7.5 76.0
V
Undervoltage Lockout UVLO 5.2 V
MAX5035A
V
IN
= 7.5V to 76V,
I
OUT
= 20mA to 1A
3.185 3.3 3.415
MAX5035B
V
IN
= 7.5V to 76V,
I
OUT
= 20mA to 1A
4.85 5.0 5.15
Output Voltage V
OUT
MAX5035C
V
IN
= 15V to 76V,
I
OUT
= 20mA to 1A
11.64 12 12.36
V
V
IN
= 7.5V to 76V, MAX5035D/E 1.192 1.221 1.250
Feedback Voltage V
FB
V
IN
= 7.5V to 76V, MAX5035E 1.185 1.221 1.250
V
V
IN
= 12V, I
LOAD
= 0.5A, MAX5035A 86
V
IN
= 12V, I
LOAD
= 0.5A, MAX5035B 90
V
IN
= 24V, I
LOAD
= 0.5A, MAX5035C 94Efficiency η
V
IN
= 12V, V
OUT
= 5V, I
LOAD
= 0.5A,
MAX5035D/E
90
%
V
FB
= 3.5V, V
IN
= 7.5V to 76V, MAX5035A 270 440
V
FB
= 5.5V, V
IN
= 7.5V to 76V, MAX5035B 270 440
V
FB
= 13V, V
IN
= 15V to 76V, MAX5035C 270 440
V
FB
= 1.3V, MAX5035D 270 440
Quiescent Supply Current I
Q
V
FB
= 1.3V, MAX5035E 340 460
µA
Shutdown Current I
SHDN
V
ON/OFF
= 0V, V
IN
= 7.5V to 76V 10 45 µA
Peak Switch Current Limit I
LIM
(Note 1) 1.30 1.9 2.50 A
MAX5035
2
Maxim Integrated