MAX679EUA Maxim Integrated Products, MAX679EUA Datasheet - Page 3

• Manufacturer Part Number: MAX679EUA
• Description: Charge Pumps
• Manufacturer: Maxim Integrated Products

Specifications of MAX679EUA

• Function: Step Up
• Output Voltage: 3.3 V
• Output Current: 20 mA
• Maximum Operating Temperature: + 85 C
• Package / Case: uMAX-8
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

(Typical Operating Circuit with: V
otherwise noted.)
__________________________________________Typical Operating Characteristics
100
360
350
340
330
320
310
300
3.4
3.3
3.2
3.1
3.0
2.9
90
80
70
60
50
40
30
10
20
0
0.01
-40
0
FSET = IN (1MHz)
DASHED LINES INDICATE
OUTPUT OUT OF REGULATION
V
10
FSET = GND (330kHz)
V
IN
IN
= 1.8V
= 2.5V
-15
V
20 30
IN
vs. OUTPUT CURRENT
0.1
vs. OUTPUT CURRENT
V
= 1.8V
OUTPUT CURRENT (mA)
IN
OUTPUT CURRENT (mA)
PUMP FREQUENCY
OUTPUT VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
= 3.0V
EFFICIENCY
V
40 50
10
IN
V
_______________________________________________________________________________________
IN
= 2.4V
V
IN
= 2.0V
1
= 2.0V
60 70
35
FSET = IN (1MHz)
V
IN
= 3.5V
10
V
V
V
80 90
60
IN
IN
IN
IN
= 3.5V
= 3.0V
= 2.4V
= V
100
100
85
S HDN
= 2V, C
1100
1080
1060
1040
1020
1000
100
100
980
960
940
920
900
0.1
10
90
80
70
60
50
40
30
20
10
1
0
0.01
Regulated 3.3V Charge Pump
1.8
-40
IN
SHDN = GND
SHDN = IN
FSET = IN (1MHz)
V
2.0
IN
= 4.7µF, C1 = 0.33µF, C
= 2.5V
V
-15
IN
2.2
vs. OUTPUT CURRENT
= 1.8V
0.1
vs. SUPPLY VOLTAGE
OUTPUT CURRENT (mA)
PUMP FREQUENCY
SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY VOLTAGE (V)
2.4
TEMPERATURE (°C)
EFFICIENCY
10
2.6 2.8
1
FSET = GND (330kHz)
35
V
3.0
V
V
IN
IN
IN
V
= 3.0V
IN
= 2.0V
= 2.4V
10
3.2 3.4
= 3.5V
60
OUT
100
3.6
= 10µF, tested in-circuit, T
85
600
500
400
300
200
100
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
0
-40
0
FSET = GND (330kHz)
DASHED LINES INDICATE
OUTPUT OUT OF REGULATION
FSET = GND (330kHz)
V
10
IN
SHUTDOWN SUPPLY CURRENT
OUTPUT RIPPLE (2mA LOAD)
= 2.4V
-15
V
IN
20
vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
= 1.8V
vs. TEMPERATURE
OUTPUT VOLTAGE
TEMPERATURE (°C)
30
10
100 s/div
A
= +25°C, unless
V
40
IN
V
= 2.0V
IN
35
50
= 3.5V
60
V
V
60
IN
IN
= 3.0V
= 2.4V
70
85
80
3
V
50mV/div
AC COUPLED
OUT