MAX1680 Maxim, MAX1680 Datasheet - Page 3

• Manufacturer Part Number: MAX1680
• Description: 125mA / Frequency-Selectable / Switched-Capacitor Voltage Converters
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS
( Typical Operating Circuits (inverter configuration), FSEL = LV = GND, V
(MAX1681), T
ELECTRICAL CHARACTERISTICS (continued)
( Typical Operating Circuits (inverter configuration), FSEL = LV = GND, V
(MAX1681), T
Note 2: C1 and C2 are low-ESR (<0.2Ω) capacitors. Capacitor ESR adds to the circuit’s output resistance. Using capacitors with
Note 3: The typical threshold for V
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
Power Efficiency
Input Voltage Range
Supply Current
Output Voltage Under Load
(Note 2)
Output Resistance (Note 2)
Output Resistance in
Shutdown
Shutdown Current
Input Bias Current (SHDN)
Input Bias Current (FSEL)
Shutdown, FSEL Thresholds
Switching Frequency
PARAMETER
PARAMETER
higher ESR reduces output voltage and efficiency. The specified output resistance includes the C1 and C2 0.2Ω ESR.
A
A
= -40°C to +85°C, unless otherwise noted.) (Note 4)
= 0°C to +85°C, unless otherwise noted. Typical values are at T
_______________________________________________________________________________________
Switched-Capacitor Voltage Converters
R
SYMBOL
SYMBOL
OUT(SHUT)
I+
INPUT
V
I
R
I
SHDN
f
LOAD
FSEL
OSC
V
SHDN
V
V
OUT
I+
IN
IH
IL
other than +5V is 0.35V
R
Inverter configuration,
R
Doubler configuration,
R
MAX1680
MAX1681
I
FSEL = IN or LV
SHDN = IN
OUT = GND, SHDN = IN
LV = GND (Note 3)
MAX1680
MAX1681
LOAD
125mA, Frequency-Selectable,
L
L
L
= 100Ω to GND, FSEL = IN
= 1kΩ, LV = GND
= 1kΩ, LV = OUT
= 125mA
CONDITIONS
CONDITIONS
INPUT
(V
IL
IN
IN
= V
= 5V, C1 = C2 = 10µF (MAX1680), C1 = C2 = 2.2µF
= 5V, C1 = C2 = 10µF (MAX1680), C1 = C2 = 2.2µF
IH
A
MAX1680
MAX1681
MAX1680
MAX1681
FSEL = IN
(125kHz)
FSEL = LV
(250kHz)
FSEL = IN
(500kHz)
FSEL = LV
(1MHz)
FSEL = LV
FSEL = IN
FSEL = LV
FSEL = IN
).
= +25°C.)
MAX1680
MAX1681
-3.75
MIN
MIN
157
570
285
2.0
3.0
2.5
4.0
79
-1
-1
4
TYP
TYP
90
80
MAX
1490
MAX
10.8
21.6
43.2
348
174
745
5.5
5.5
5.5
5.5
5.4
10
5
1
1
1
1
UNITS
UNITS
kHz
mA
mA
µA
µA
µA
%
Ω
Ω
V
V
V
3