MAX1972EEE+ Maxim Integrated Products, MAX1972EEE+ Datasheet - Page 16

• 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

Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
Figure 5. Setting the Output Voltage with External Resistors
Figure 6. Setting an Output Below 1.2V
16
______________________________________________________________________________________
RSI
RSI
V
3V TO 3.6V
V
2.6V TO 5.5V
EN
EN
IN
IN
680pF
680pF
680pF
680pF
100kΩ
V
CC
0.1µF
V
0.1µF
CC
10µF
27kΩ
68kΩ
R
R
C1
C2
11
10
13
12
11
10
13
12
3
6
7
3
6
7
RSI
EN
COMP1
COMP2
FBSEL1
FBSEL2
REF
PFO
EN
COMP1
COMP2
FBSEL1
FBSEL2
REF
14
14
IN
GND
IN
8
GND
8
MAX1971
MAX1970
10Ω
10Ω
16
PGND
V
16
PGND
V
2
CC
2
CC
POR
LX1
FB1
LX2
FB2
POR
LX1
FB1
LX2
FB2
15
9
1
4
5
9
1
4
15
5
0.1µF
0.1µF
4.7µH
4.7µH
4.7µH
4.7µH
13kΩ
100kΩ
R
R
R
R
2kΩ
100kΩ
1b
2b
1a
2a
R1
R2
POR
V
V
10µF
OUT1
OUT2
10µF
POR
V
V
OUT1
10µF
10µF
1.0V
OUT2
2.5V