S w it c h e d -Ca p a c it o r Vo lt a g e Co n ve rt e rs
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V+ to GND, or GND to VOUT)....................10.5V
Input Voltage on Pins 1, 6, and 7 .........-0.3V ≤ VIN ≤ (V+ + 0.3V)
LV Input Current ..................................................................20µA
Output Short-Circuit Duration (V+ ≤ 5.5V)..................Continuous
Continuous Power Dissipation (TA = +70°C)
CERDIP (derate 8.00mW/°C above +70°C).................640mW
TO-99 (derate 6.67mW/°C above +70°C)....................533mW
Operating Temperature Ranges
MAX1044C_ _ /ICL7660C_ _ ..............................0°C to +70°C
MAX1044E_ _ /ICL7660E_ _ ............................-40°C to +85°C
MAX1044M_ _ /ICL7660M_ _ ........................-55°C to +125°C
Storage Temperature Range ............................-65°C to + 150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
µMAX (derate 4.1mW/°C above +70°C) ......................330mW
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
(Circuit of Figure 1, V+ = 5.0V, LV pin = 0V, BOOST pin = open, ILOAD = 0mA, TA = TMIN to TMAX, unless otherwise noted.)
MAX1044
MIN TYP MAX
ICL7660
MIN TYP MAX
PARAMETER
CONDITIONS
UNITS
µA
MAX14/ICL760
T
A
= +25°C
30 200
200
80 175
225
R
= ∞,
L
T
= 0°C to +70°C
= -40°C to +85°C
= -55°C to +125°C
A
pins 1 and 7
no connection,
LV open
Supply Current
T
A
200
250
T
A
200
250
R
R
R
= ∞, pins 1 and 7 = V+ = 3V
10
L
L
L
= 10kΩ, LV open
3.0
1.5
10.0
3.5
Supply Voltage
Range (Note 1)
V
= 10kΩ, LV to GND
1.5
10
65 100
130
T
= +25°C
55 100
120
A
I
= 20mA,
= 5kHz,
L
T
A
= 0°C to +70°C
= -40°C to +85°C
= -55°C to +125°C
= +25°C
f
OSC
T
A
130
140
LV open
T
A
150
150
Output Resistance
Ω
T
A
325
250
f
= 2.7kHz (ICL7660),
= 1kHz (MAX1044),
OSC
T
A
= 0°C to +70°C
= -40°C to +85°C
= -55°C to +125°C
325
300
f
OSC
V+ = 2V, IL = 3mA,
LV to GND
T
A
325
300
T
A
400
400
V+ = 5V
V+ = 2V
5
1
10
C
= 1pF,
OSC
Oscillator Frequency
kHz
LV to GND (Note 2)
Power Efficiency
R
R
= 5kΩ, T = +25°C, f
5kHz, LV open
95 98
95 98
%
%
L
L
A
OSC
Voltage Conversion Efficiency
= ∞, T = +25°C, LV open
97.0 99.9
99.0 99.9
A
Pin 1 = 0V
Pin 1 = V+
V+ = 2V
3
Oscillator Sink or
Source Current
V
= 0V or V+, LV open
µA
OSC
20
1.0
1.0
MΩ
kΩ
Oscillator Impedance
T = +25°C
A
V+ = 5V
100
100
Note 1: The Maxim ICL7660 and MAX1044 can operate without an external output diode over the full temperature and voltage
ranges. The Maxim ICL7660 can also be used with an external output diode in series with pin 5 (cathode at V ) when
OUT
replacing the Intersil ICL7660. Tests are performed without diode in circuit.
Note 2: f is tested with C = 100pF to minimize the effects of test fixture capacitance loading. The 1pF frequency is correlat-
OSC
OSC
ed to this 100pF test point, and is intended to simulate pin 7’s capacitance when the device is plugged into a test socket
with no external capacitor. For this test, the LV pin is connected to GND for comparison to the original manufacturer’s
device, which automatically connects this pin to GND for (V+ > 3V).
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
