5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
MAX608
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
OUT to GND.............................................................-0.3V, 17V
EXT, CS, REF, SHDN, FB to GND ...............-0.3V, (V
OUT
+ 0.3V)
GND to AGND.............................................................0.1V, -0.1V
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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.
ELECTRICAL CHARACTERISTICS
(V
OUT
= 5V, I
LOAD
= 0mA, T
A
= -40°C to +85°C where indicated. T
A
= -25°C to +85°C for all other limits. Typical values are at
T
A
= +25°C.)
PARAMETER
Input Voltage Range
(Note 2)
Minimum Start-Up Voltage
SYMBOL
CONDITIONS
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
No load
V
OUT
= 16.5V,
SHDN
≤
0.4V
V
OUT
= 10V,
SHDN
≥
1.6V
Output Voltage (Note 3)
Output Voltage Line
Regulation (Note 4)
Output Voltage Load
Regulation (Note 4)
Maximum Switch On-Time t
ON
(max)
Minimum Switch Off-Time
Efficiency
Reference Voltage
REF Load Regulation
REF Line Regulation
FB Trip Point Voltage
(Note 5)
FB Input Current
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
2
V
FB
I
FB
V
IH
V
IL
I
IN
V
REF
t
OFF
(min)
V
IN
= 4V, V
OUT
= 5V, I
LOAD
= 500mA,
circuit of Figure 2a
I
REF =
0µA
0µA
≤
I
REF
≤
100µA
3V
≤
V
OUT
≤
16.5V
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
V
OUT
= 1.8V to 16.5V
V
OUT
= 1.8V to 16.5V
V
OUT
= 16.5V, SHDN = 0V or 16.5V
1.6
0.4
±1
1.4625
1.4475
-4
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
1.4625
1.4475
-4
40
1.5
V
IN
= 2.0V to 5.0V,
over full load range,
circuit of Figure 2a
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
T
A
= -25°C to +85°C
T
A
= -40°C to +85°C (Note 1)
4.825
4.800
5.0
5.0
7
60
12
1.8
16
2.3
87
1.5
1.5375
1.5525
10
100
1.5375
1.5525
±20
±40
20
2.8
2
MIN
1.8
1.9
1.6
85
TYP
MAX
16.5
16.5
1.8
110
120
5
10
5.175
V
5.200
mV/V
mV/A
µs
µs
%
V
mV
µV/V
V
nA
UNITS
V
V
µA
µA
Supply Current
V
IN
= 2.7V to 4.0V, V
OUT
= 5V, I
LOAD
= 500mA,
circuit of Figure 2a
V
IN
= 2V, V
OUT
= 5V, I
LOAD
= 0mA to 500mA,
circuit of Figure 2a
V
V
µ
A
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
