3.3V-Input to Regulated 5V-Output
Charge Pumps
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3V, V
SKIP
= 0V, C
IN
= 1µF, C
X
= 0.47µF, C
OUT
= 2µF, I
SHDN
= 22µA; I
MAX
= 250mA for MAX682, I
MAX
= 100mA for MAX683,
I
MAX
= 50mA for MAX684; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SKIP
Input Voltage Low
SKIP
Input Voltage High
SKIP
Input Leakage Current
SYMBOL
V
INL,
SKIP
V
INH,
SKIP
I
SKIP
V
IN
= 5.5V
V
IN
= 5.5V, V
SKIP
= 0V or 5.5V
2.4
-1
1
CONDITIONS
MIN
TYP
MAX
0.8
UNITS
V
µA
MAX682/MAX683/MAX684
Note 1:
Specifications to -40°C are guaranteed by design and not production tested.
Note 2:
Current into
SHDN
determines oscillator frequency: R
EXT
(kΩ) = 45000 (V
IN
- 0.69V) / f
OSC
(kHz)
__________________________________________Typical Operating Characteristics
(Circuit of Figure 5, V
IN
= 3.3V, component values from Tables 2 and 3, T
A
= +25°C, unless otherwise noted.)
NO-LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SKIP = HIGH
I
SHDN
= 22µA
8
SUPPLY CURRENT (mA)
MAX682
6
MAX682 TOC01
OUTPUT VOLTAGE vs. LOAD CURRENT
(SKIP = LOW)
MAX682 TOC03
OUTPUT VOLTAGE vs. LOAD CURRENT
(SKIP = HIGH)
SKIP = HIGH
I
SHDN
= 22µA
MAX682 TOC04
10
5.50
5.25
OUTPUT VOLTAGE (V)
5.00
4.75
4.50
4.25
5.50
5.25
OUTPUT VOLTAGE (V)
5.00
4.75
4.50
4.25
4.00
MAX684
MAX683
MAX682
MAX684
MAX682
MAX683
4
MAX683
2
MAX684
0
2
3
4
SUPPLY VOLTAGE (V)
5
6
4.00
1
10
100
1000
LOAD CURRENT (mA)
1
10
100
1000
LOAD CURRENT (mA)
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX682 TOC06
OSCILLATOR FREQUENCY vs.
SHUTDOWN PIN INPUT CURRENT
MAX682 TOC08
NO-LOAD SUPPLY CURRENT vs.
SHUTDOWN PIN INPUT CURRENT
SKIP = HIGH
NO-LOAD SUPPLY CURRENT (mA)
MAX682
10
MAX683
MAX682 TOC09
5.50
SKIP = LOW
5.25
OUTPUT VOLTAGE (V)
5.00
4.75
4.50
4.25
4.00
3.75
3.50
2
3
4
SUPPLY VOLTAGE (V)
5
6
SKIP = HIGH
10M
100
OSCILLATOR FREQUENCY (Hz)
1M
100k
1
MAX684
10k
0.1
1
10
100
SHDN INPUT CURRENT (µA)
0.1
0.1
1
10
100
SHDN INPUT CURRENT (µA)
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
