MAX618EEE Maxim Integrated Products, MAX618EEE Datasheet - Page 4

• Manufacturer Part Number: MAX618EEE
• Description: DC/DC Switching Controllers 28V PWM Step-Up DC/DC Converter
• Manufacturer: Maxim Integrated Products

Specifications of MAX618EEE

• Output Voltage: 3.05 V
• Output Current: 200 uA
• Input Voltage: 3 V to 28 V
• Supply Current: 500 uA
• Switching Frequency: 250 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

(200mV/div)
(100mA/div)
(100mV/div)
28V, PWM, Step-Up DC-DC Converter
(10V/div)
(Circuit of Figure 1, T
4
(1A/div)
0.65
0.60
0.55
0.50
0.45
0.40
V
V
I
OUT
OUT
V
OUT
_______________________________________________________________________________________
LX
I
L
0
V
V
IN
IN
= 5V, V
= 5V, V
LOAD-TRANSIENT RESPONSE
NO-LOAD SUPPLY CURRENT
5
MEDIUM-LOAD SWITCHING
OUT
OUT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
= 12V
10
= 12V, I
WAVEFORMS
2μs/div
5ms/div
A
OUT
15
= +25°C.)
= 200mA
20
MAX618 toc10
25
MAX618 toc07
30
0
0
(10V/div)
(100mV/
(1A/div)
(2V/div)
(2V/div)
SHDN
700
650
600
550
500
450
400
350
300
V
V
V
OUT
div)
OUT
LX
I
-50
L
Typical Operating Characteristics (continued)
V
V
SUPPLY CURRENT vs. TEMPERATURE
IN
IN
= 5V, V
= 5V, V
INCLUDES CAPACITOR LEAKAGE CURRENT
-30
HEAVY-LOAD SWITCHING
SHUTDOWN RESPONSE
-10
OUT
OUT
TEMPERATURE (°C)
= 12V, I
= 12V, I
WAVEFORMS
10
500μs/div
2μs/div
OUT
LOAD
30
= 500mA
= 500mA
50
V
V
IN
IN
70
V
IN
= 3V
= 5V
= 8V
MAX618 toc08
MAX618 toc11
90
110
0
0
12V
5V
(50mV/div)
(5V/div)
V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
OUT
V
0
0
IN
2
2
I
OUT
V
3
= 200mA, V
OUT
MAXIMUM OUTPUT CURRENT
LINE-TRANSIENT RESPONSE
7
4
= 12V
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
vs. INPUT VOLTAGE
SUPPLY VOLTAGE (V)
5
INPUT VOLTAGE (V)
12
OUT
6
= 12V
2ms/div
17
7
8
22
9
10 11 12
MAX618 toc09
27
32
6V
3V