MAX1831EEE Maxim Integrated Products, MAX1831EEE Datasheet - Page 2

• Manufacturer Part Number: MAX1831EEE
• Description: IC REG STEP-DWN 3A W/SW 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1831EEE

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.5V, 2.5V, 3.3V, Adj
• Current - Output: 3A
• Frequency - Switching: 1MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 1.12W
• Output Voltage: 1.5 V to 3.3 V
• Output Current: 3.4 A
• Input Voltage: 3 V to 5.5 V
• Switching Frequency: 1 MHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS
V
IN to V
GND to PGND.....................................................................±0.3V
COMP, FB, TOFF, FBSEL, REF to GND .....-0.3V to (V
LX Current (Note 1) ...............................................................5.1A
REF Short Circuit to GND Duration ............................Continuous
ESD Protection .....................................................................±2kV
3A, 1MHz, Low-Voltage, Step-Down Regulators with
Synchronous Rectification and Internal Switches
ELECTRICAL CHARACTERISTICS
(V
2
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias the diode should take care not to exceed the IC’s
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.
CC
Input Voltage
Preset Output Voltage
Adjustable Output Voltage Range
AC Load Regulation Error
DC Load Regulation Error
Dropout Voltage
Reference Voltage
Reference Load Regulation
Current-Limit Threshold
Maximum Output RMS Current
Idle Mode Current Threshold
PMOS Switch On-Resistance
NMOS Switch On-Resistance
Switching Frequency
No-Load Supply Current
IN
, IN, SHDN to GND ............................................-0.3V to +6V
_______________________________________________________________________________________
= V
CC
CC
package power dissipation.
.............................................................................±0.3V
PARAMETER
= +3.3V, FBSEL = GND, T
I
SYMBOL
V
OUT(RMS)
I
A
IN
R
R
∆V
IN
V
I
V
= 0°C to +85°C, unless otherwise noted. Typical values are at T
V
LIMIT
ON
ON
I
OUT
, V
REF
+ I
DO
IM
REF
f
,
,
CC
CC
P
N
V
I
V
V
I
V
V
FBSEL = GND
V
I
(Note 4)
I
I
(Note 2)
V
LOAD
LOAD
REF
LX
LX
IN
FB
IN
FB
CC
CC
FB
CC
= 0.5A
= 0.5A
= +3V to +5.5V,
= +3.7V to +5.5V,
= V
= V
= 1.2V
= V
= V
= -1µA to +10µA
= 0 to 3A,
= 0 to 3A,
+ 0.3V)
OUT
OUT
IN
IN
= +3V to +5.5V, I
= +3V, I
CONDITIONS
LOAD
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) ................................ +300°C
16-Pin QSOP (derate 14mW/°C above +70°C;
part mounted on 1in
= 3A
FBSEL = V
FBSEL =
unconnected
FBSEL = REF
(MAX1830)
FBSEL = GND
FBSEL = REF
(MAX1831)
LOAD
V
V
V
V
= 0,
IN
IN
IN
IN
CC
= 4.5V
= 3V
= 4.5V
= 3V
2
of 1oz copper) .............................1.12W
2.487
1.492
1.791
1.084
3.283
1.089
V
MIN
3.0
4.0
0.2
REF
A
A
= +70°C)
= +25°C.)
2.525
1.515
1.818
1.100
3.333
1.100
TYP
150
325
0.4
0.5
4.8
0.6
45
50
55
55
2
2.563
1.538
1.845
1.117
3.383
1.111
MAX
330
110
100
750
V
5.5
5.4
3.4
1.0
90
95
2
1
IN
UNITS
MHz
mΩ
mV
mV
µA
%
%
V
V
V
V
A
A
A