MAX1972EEE+ Maxim Integrated Products, MAX1972EEE+ Datasheet - Page 4

• 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
ELECTRICAL CHARACTERISTICS (continued)
(V
unconnected, T
ELECTRICAL CHARACTERISTICS
(V
FBSEL1 = unconnected, FBSEL2 = unconnected, T
4
PFO (MAX1970 and MAX1972 Only)
PFO Trip Threshold
PFO Output Current, High
PFO Output Voltage, Low
EN AND RSI (MAX1971 Only)
Logic Input Thresholds
RSI Input Resistance
EN Logic Input Current
IN AND V
IN Voltage Range
IN Supply Current
IN Shutdown Current
V
Lockout Threshold
REF
REF Voltage
REF Shutdown Resistance
REF Soft-Start Current
FB1 AND FB2
FB_ Regulation Voltage
OUT_ Voltage Range
OUT1 Regulation Voltage
OUT2 Regulation Voltage
Maximum Output Current
IN
IN
CC
_______________________________________________________________________________________
= V
= V
Undervoltage
PARAMETER
PARAMETER
CC
CC
CC
= V
= V
EN
A
EN
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= 5V, V
= 5V, R
FB1
POR
= V
IN = V
PFO = IN
I
IN = 2.6V to 5.5V
Internal pullup resistor to IN
Logic input at 0 or
5.5V, V
Switching with no load
V
V
V
V
I
REF to GND, V
V
FBSEL_ = unconnected, OUT1 = FB1, OUT2 = FB2,
V
FBSEL_ = unconnected
V
V
V
Guaranteed by design (Note 1)
PFO
REF
= 100kΩ to IN, R
IN
IN
CC
CC
REF
COMP_
IN
IN
IN
FB2
= 3.3V
= 5.5V, V
= 2.6V to 5.5V
= 4.5V to 5.5V
= 2.6V to 5.5V
falling
= 0, V
= 1mA, V
rising
= 1V
CC
IN
= 1.15V, R
= 1.20V to 1.80V, V
= 5.5V
IN
EN
= 2.6V to 5.5V
IN
EN
= 0
= 4.3V
=0
POR
PFO
A
= -40°C to +85°C.) (Note 2)
CONDITIONS
CONDITIONS
= 100kΩ to IN, R
= 100kΩ to IN, V
V
V
V
V
V
V
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
V
V
V
V
IN
CC
CC
IL
IH
IL
IH
COMP1
COMP1
COMP2
COMP2
= 2.6V to 5.5V
rising
falling
= 1.2V, FBSEL1= GND
= 1.2V, FBSEL1 = V
= 1.2V, FBSEL2 = GND
= 1.2V, FBSEL2 = V
PFO
RSI
= 0, C
= 100kΩ to IN, RSI = 0, C
A
= +25°C.)
REF
CC
CC
= 0.1µF, FBSEL1 = unconnected, FBSEL2 =
1.185
1.185
1.778
3.259
1.481
2.469
3.86
2.20
MIN
MIN
750
0.4
2.6
1.2
20
-1
-1
-1
5
VCC
TYP
4.04
3.94
0.01
0.95
TYP
1.0
10
= 0.1µF, C
1.212
1.212
1.818
3.333
1.515
2.525
MAX
MAX
4.12
0.05
2.55
100
V
1.6
5.5
20
10
20
20
25
30
1
1
1
IN
REF
= 0.1µF,
UNITS
UNITS
mA
mA
kΩ
µA
µA
µA
µA
Ω
V
V
V
V
V
V
V
V
V
V