MAX1680 Datasheet, PDF (2/12 Pages) Maxim Integrated Products – 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters

125mA, Frequency-Selectable,
Switched-Capacitor Voltage Converters
ABSOLUTE MAXIMUM RATINGS
IN ..............................................................................-0.3V to +6V
LV....................................................(V_OUT - 0.3V) to (V_IN + 0.3V)
CAP+ ...........................................................-0.3V to (V_IN + 0.3V)
SHDN, FSEL ......................................(V_LV - 0.3V) to (V_IN + 0.3V)
OUT, CAP- ..................................................................-6V to 0.3V
Continuous Output Current ..............................................135mA
Output Short-Circuit Duration to GND (Note 1) ...................1sec
Continuous Power Dissipation (T_A = +70°C)
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
Note 1: Shorting OUT to IN may damage the device and should be avoided.
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
(Typical Operating Circuits (inverter configuration), FSEL = LV = GND, V_IN = 5V, C1 = C2 = 10µF (MAX1680), C1 = C2 = 2.2µF
(MAX1681), T_A = 0°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
Inverter configuration,
R_L = 1kΩ, LV = GND
V_IN
Doubler configuration,
R_L = 1kΩ, LV = OUT
MAX1680
2.0
MAX1681
3.0
MAX1680
2.5
MAX1681
4.0
5.5
5.5
V
5.5
V
5.5
Supply Current
MAX1680
I+
MAX1681
FSEL = IN
(125kHz)
FSEL = LV
(250kHz)
FSEL = IN
(500kHz)
FSEL = LV
(1MHz)
T_A = +25°C
T_A = +25°C
T_A = +25°C
T_A = +25°C
2.5
4.5
5.4
5
9
10.8
mA
10
18
21.6
20
36
43.2
Output Voltage Under Load
(Note 2)
V_LOAD I_LOAD = 125mA
-3.75 -4.56
V
Output Resistance (Note 2)
R_OUT
FSEL = IN or LV
3.5
10
Ω
Output Resistance to Ground
in Shutdown
R_OUT(SHUT)
SHDN = IN
1
5
Ω
Shutdown Current
Input Bias Current (SHDN)
Input Bias Current (FSEL)
Shutdown, FSEL Thresholds
Switching Frequency
I+_SHDN OUT = GND, SHDN = IN
1
µA
I_SHDN
-1
1
µA
I_FSEL
-1
1
µA
V_IL
LV = GND (Note 3)
V_IH
1
V
4
f_OSC
MAX1680
MAX1681
T_A = +25°C 187
250
313
FSEL = LV
157
348
FSEL = IN ^{TA = +25°C}
94
125
156
79
174
kHz
FSEL = LV ^{TA = +25°C 750}
1000 1250
570
1490
FSEL = IN ^{TA = +25°C 375}
500
625
285
745
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