MAX1947ETA18+T Maxim Integrated Products, MAX1947ETA18+T Datasheet - Page 4

• Manufacturer Part Number: MAX1947ETA18+T
• Description: IC DC-DC CONV 1.8V 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost)r

Specifications of MAX1947ETA18+T

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 250mA
• Frequency - Switching: Up to 2MHz
• Voltage - Input: 0.7 ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Power - Output: 1.95W
• Output Voltage: 1.8 V
• Output Current: 273 mA
• Input Voltage: 0.7 V to 3.6 V
• Supply Current: 70 uA
• Switching Frequency: 650 KHz
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX1947ETA18+T

Low Input/Output Voltage
Step-Up DC-DC Converter with RESET
(V
4
IN
_______________________________________________________________________________________
= 1.5V, Circuit of Typical Application Circuit, T
100
100
95
90
85
80
75
70
65
60
95
90
85
80
75
70
65
60
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.1
0
0.1
V
OUT
EFFICIENCY vs. LOAD CURRENT
20
EFFICIENCY vs. LOAD CURRENT
= 2.5V
1
40
1
STARTUP VOLTAGE
vs. LOAD CURRENT
V
LOAD CURRENT (mA)
LOAD CURRENT (mA)
MAX1947ETA33
LOAD CURRENT (mA)
MAX1947ETA18
IN
V
= 1.25V
V
60
OUT
IN
= 1.8V
= 1.8V
10
10
V
80
V
IN
IN
V
= 1.6V
= 1.25V
IN
V
V
100
IN
= 2.5V
IN
= 1V
V
V
= 1V
100
100
OUT
OUT
120
= 3.0V
= 3.3V
140
1000
1000
100
1200
1000
95
90
85
80
75
70
65
60
800
600
400
200
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
A
0
0
= +25°C, unless otherwise noted.)
0.7
0.1
-40
V
OUT
EFFICIENCY vs. LOAD CURRENT
MAXIMUM OUTPUT CURRENT
1.2
= 1.8V
-15
1
vs. INPUT VOLTAGE
STARTUP VOLTAGE
vs. TEMPERATURE
LOAD CURRENT (mA)
MAX1947ETA25
1.7
INPUT VOLTAGE (V)
TEMPERATURE (°C)
V
OUT
V
IN
10
= 2.5V
= 1.25V
2.2
10
V
Typical Operating Characteristics
V
OUT
V
OUT
IN
V
35
R
R
IN
= 3.0V
LOAD
LOAD
= 1.6V
= 3.3V
2.7
= 1V
100
= 1kΩ
= 0Ω
60
3.2
1000
3.7
85
100
95
90
85
80
75
70
65
60
600
500
400
300
200
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0.7
0.1
0.7
V
EFFICIENCY vs. LOAD CURRENT
OUT
1.2
1.2
V
IN
NO-LOAD INPUT CURRENT
= 3.3V
SHUTDOWN THRESHOLD
V
= 2.5V
1
OUT
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
LOAD CURRENT (mA)
MAX1947ETA30
1.7
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
1.7
V
= 1.8V
V
OUT
IN
= 1.25V
= 2.5V
2.2
10
2.2
V
IN
= 1.8V
V
IN
2.7
2.7
= 1V
100
3.2
3.2
1000
3.7
3.7