MAX1972EEE+ Maxim Integrated Products, MAX1972EEE+ Datasheet - Page 7

• Manufacturer Part Number: MAX1972EEE+
• Description: IC REG STP DWN 750MA 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1972EEE+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 1.5V, 1.8V, 2.5V, 3.3V, Adj
• Current - Output: 750mA
• Frequency - Switching: 1.4MHz
• Voltage - Input: 2.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 667mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(T
A
100
= +25°C, unless otherwise noted.)
100
30
10
90
80
70
60
50
40
20
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
90
80
70
60
50
40
30
20
10
0
0
0.01
0.01
V
V
OUT2
OUT1
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
= 2.5V
= 3.3V
V
LOAD CURRENT (A)
LOAD CURRENT (A)
OUT2
V
V
OUT1
_______________________________________________________________________________________
OUT2
= 1.5V
= 1.8V
0.1
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.1
= 2.5V
Down Regulator with POR and RSI/PFO
2.5
V
OUT1
V
OUT2
MAX1970/MAX1972
MAX1971
MAX1971
V
= 1.8V
MAX1970/
MAX1972
V
IN
3.0
IN
= 1.5V
OSCILLATOR FREQUENCY
= 3.3V
= 5.0V
T
T
A
A
vs. INPUT VOLTAGE
= +25°C
= +25°C
INPUT VOLTAGE (V)
3.5
1
1
4.0
100
500
450
400
350
300
250
200
150
100
90
80
70
60
50
40
30
20
10
50
0
0
4.5
0.01
0
INPUT CURRENT vs. OUTPUT CURRENT
T
T
T
T
A
V
A
A
A
IN
= +85°C
= -40°C
= +85°C
= -40°C
5.0
V
EFFICIENCY vs. LOAD CURRENT
100
OUT1
= 5.0V
= 3.3V
200
V
5.5
OUT2
OUTPUT CURRENT (mA)
V
LOAD CURRENT (A)
V
MAX1970/MAX1972
OUT1
OUT2
300
= 2.5V
= 3.3V
= 2.5V
V
V
0.1
OUT2
400
OUT2
Typical Operating Characteristics
-2
-3
-1
= 1.5V
3
2
1
0
= 1.5V
500
V
0
OUT1
V
MAX1970/MAX1972
V
OUT1
600
MAX1971
V
IN
IN
= 1.8V
CHANGE IN OUTPUT VOLTAGE
= 5.0V
= 5.0V
= 1.8V
700
200
vs. LOAD CURRENT
800
LOAD CURRENT (mA)
1
V
OUT1
V
OUT2
400
= 1.8V
1.22
1.21
1.20
1.19
1.18
1.17
= 2.5V
100
90
80
70
60
50
40
30
20
10
0
0.01
V
0
V
OUT2
OUT1
600
V
OUT2
EFFICIENCY vs. LOAD CURRENT
= 1.5V
= 3.3V
REFERENCE LOAD CURRENT
REFERENCE LOAD CURRENT (µA)
REFERENCE VOLTAGE vs.
= 2.5V
5
800
V
LOAD CURRENT (A)
OUT1
= 1.8V
10
0.1
V
OUT2
15
MAX1970/
MAX1972
V
IN
= 1.5V
= 3.3V
20
1
7