MAX1842EEE+ Maxim Integrated Products, MAX1842EEE+ Datasheet - Page 2

• Manufacturer Part Number: MAX1842EEE+
• Description: IC BUCK SYNC FIX/ADJ 1A 16QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1842EEE+

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.5V, 1.8V, 2.5V, Adj
• Current - Output: 1A
• 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: 1W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
V
IN to V
GND to PGND.....................................................................±0.3V
All Other Pins to GND.................................-0.3V to (V
LX Current (Note 1).............................................................±4.7A
REF Short Circuit to GND Duration ............................Continuous
ESD Protection .....................................................................±2kV
ELECTRICAL CHARACTERISTICS
(V
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
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward-bias these diodes should take care not to exceed
Input Voltage
Preset Output Voltage
Adjustable Output Voltage
Range
AC Load Regulation Error
DC Load Regulation Error
Dropout Voltage
Reference Voltage
Reference Load Regulation
PMOS Switch
On-Resistance
NMOS Switch
On-Resistance
CC
IN
, IN to GND ........................................................-0.3V to +6V
_______________________________________________________________________________________
= V
CC
CC
the IC’s package power dissipation limits.
.............................................................................±0.3V
PARAMETER
= 3.3V, FBSEL = GND, T
A
SYMBOL
V
R
R
= 0°C to +85°C, unless otherwise noted. Typical values are at T
ΔV
IN
V
V
V
ON, N
ON, P
OUT
REF
, V
DO
REF
CC
V
5.5V,
I
to 1A for
MAX1742,
I
to 2.5A for
MAX1842,
V
V
FBSEL = GND
V
T
T
I
I
I
LOAD
LOAD
REF
LX
LX
A
A
IN
FB
IN
IN
= +25°C to +85°C
= +0°C to +85°C
CC
= 0.5A
= 0.5A
= 3V to
= V
= V
= V
= -1µA to +10µA
= 0
= 0
+ 0.3V)
CC
CC
OUT
= 3V to 5.5V, I
= 3V, I
CONDITIONS
FBSEL =
V
FBSEL =
unconnected
FBSEL =
REF
FBSEL =
GND
CC
LOAD
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
SSOP (derate 16.7mW/°C above +70°C;
part mounted on 1 in.
= 1A
LOAD
= 0,
T
to +85°C
T
to +85°C
T
to +85°C
T
to +85°C
T
to +85°C
T
to +85°C
T
to +85°C
T
to +85°C
V
V
V
V
A
A
A
A
A
A
A
A
IN
IN
IN
IN
= +25°C
= +0°C
= +25°C
= +0°C
= +25°C
= +0°C
= +25°C
= +0°C
= 4.5V
= 3V
= 4.5V
= 3V
2
of 1oz. copper) ...............................1W
2.500
2.487
1.500
1.492
1.800
1.791
1.089
1.084
1.089
1.084
V
MIN
3.0
REF
A
A
= +25°C.)
= +70°C)
2.525
2.525
1.515
1.515
1.818
1.818
1.100
1.100
1.100
1.100
TYP
110
0.4
0.5
90
70
80
2
2.550
2.563
1.530
1.538
1.836
1.845
1.111
1.117
1.111
1.117
MAX
250
200
250
150
200
V
5.5
2
IN
UNITS
mΩ
mV
mV
%
%
V
V
V
V