MAX1972EEE+ Maxim Integrated Products, MAX1972EEE+ Datasheet - Page 2

• 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

ABSOLUTE MAXIMUM RATINGS
IN, EN, FBSEL1, FBSEL2, PFO, POR,
COMP1, COMP2, FB1, FB2,
LX1, LX2 to PGND .......................................-0.3V to (V
PGND to GND .......................................................-0.3V to +0.3V
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
ELECTRICAL CHARACTERISTICS
(V
unconnected, T
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
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
FB1 Input Resistance
FB2 Input Resistance
FB_ Input Bias Current
RSI, V
REF to GND .............................................-0.3V to (V
IN
CC
_______________________________________________________________________________________
= V
Undervoltage
CC
PARAMETER
CC
to GND ...................................................-0.3V to +6V
CC
= V
A
EN
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= 5V, R
POR
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)
Measured from FB1 to
GND
Measured from FB2 to
GND
FB1 or FB2, FBSEL_ = unconnected, V
REF
= 100kΩ to IN, R
IN
IN
CC
CC
REF
COMP_
IN
IN
IN
= 3.3V
= 5.5V, V
= 2.6V to 5.5V
= 4.5V to 5.5V
= 2.6V to 5.5V
falling
= 0, V
rising
= 1V
= 1.20V to 1.80V, V
IN
EN
= 2.6V to 5.5V
EN
= 0
= 0
PFO
CC
IN
CONDITIONS
= 100kΩ to IN, V
+ 0.3V)
+ 0.3V)
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
V
V
V
V
FBSEL1 = GND
FBSEL1 = V
FBSEL2 = GND
FBSEL2 = V
IN
COMP1
COMP1
COMP2
COMP2
= 2.6V to 5.5V
= 1.2V, FBSEL1= GND
= 1.2V, FBSEL1 = V
= 1.2V, FBSEL2 = GND
= 1.2V, FBSEL2 = V
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
FB1
CC
CC
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
RSI
= V
= 0, C
FB2
A
= 1.15V
= +25°C.)
REF
CC
CC
= 0.1µF, FBSEL1 = unconnected, FBSEL2 =
3.2670
1.188
1.188
1.782
1.485
2.475
2.20
22.5
22.5
MIN
750
2.6
1.2
20
30
30
A
= +70°C)
1.800
1.200
1.200
TYP
2.40
2.35
0.01
3.3
1.5
2.5
10
10
25
60
60
45
45
5
1
1
1.212
1.212
1.818
3.330
1.150
2.525
MAX
2.55
100
120
120
V
5.5
0.1
10
20
60
25
30
90
90
IN
UNITS
mA
mA
µA
µA
kΩ
kΩ
µA
Ω
V
V
V
V
V
V
V