MAX746 Maxim, MAX746 Datasheet - Page 2

• Manufacturer Part Number: MAX746
• Description: High-Efficiency / PWM / Step-Down / N-Channel DC-DC Controller
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Supply Voltage V+, AV+ to GND ..............................-0.3V to 17V
HIGH, EXT to GND....................................................-0.3V to 21V
AGND to GND..........................................................-0.3V to 0.3V
All Other Pins................................................-0.3V to (V+ + 0.3V)
Reference Current (I
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(V+ = 10V, I
High-Efficiency, PWM, Step-Down,
N-Channel DC-DC Controller
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
Input Voltage
Output Voltage
Feedback Voltage
Line Regulation
Load Regulation
Efficiency
OUT Leakage Current
FB Input Logic Low
FB Input Leakage Current
Reference Voltage
Reference Load Regulation
Soft-Start Source Current
Soft-Start Fault Current (Note 1)
Supply Current (Note 2)
Oscillator Frequency
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
_______________________________________________________________________________________
PARAMETER
LOAD
= 0A, I
REF
) ....................................................±2mA
REF
= 0 A, T
A
= +70°C)
SYMBOL
A
I
f
V
SUPP
V
V
OSC
= T
V+
OUT
FB
REF
MIN
to T
V+ = 6V to 15V, 0V < (V+ - CS) < 0.125V,
FB = 0V (includes line and load regulation)
(V+ - CS) = 0V,
external feedback mode
V+ = 6V to 15V, FB = 0V
V+ = 4V to 15V, external feedback mode
0V < (V+ - CS) < 0.125V
Circuit of Figure 1, I
V+ = 6V
V
For dual-mode switchover
FB = 2V
I
I
SS = 0V
SS = 2V
Operating, V+ = 15V
Operating, V+ = 10V
Shutdown mode
REF
REF
OUT
MAX
= 0 A
= 0 A to 100 A
= 5V
, unless otherwise noted.)
CONDITIONS
LOAD
Operating Temperature Ranges:
Junction Temperatures:
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX746C_E ........................................................0°C to +70°C
MAX746E_E .....................................................-40°C to +85°C
MAX746MJE ..................................................-55°C to +125°C
MAX746C_E/E_E..........................................................+150°C
MAX746MJE.................................................................+175°C
= 0.5A to 2.5A,
MAX746C
MAX746E/M
MAX746C
MAX746E/M
MAX746C
MAX746E/M
MAX746C
MAX746E/M
MIN
4.85
1.96
1.95
1.97
1.96
100
0.5
85
80
4
TYP
5.08
2.00
2.00
0.05
2.00
2.00
0.95
500
100
100
1.3
1.0
1.1
1.4
94
50
1
9
2.04
2.05
2.03
2.04
MAX
115
120
5.25
1.5
1.4
1.7
20
20
100
0.1
2.5
15
80
40
UNITS
%/V
kHz
mV
mV
mA
nA
%
%
V
V
V
A
V
A
A
A