Datasheet

MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT
+ 500mV or V
IN
= +2.5V, whichever is greater; SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.) (Note 3)
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.
IN, SHDN, POK, SET to GND ...................................-0.3V to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration ...............................................1min
Continuous Power Dissipation (T
A
= +70°C) (Note 1)
6-Pin SOT23 (derate 10mW/°C above +70°C)..............800mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) (Note 2) ...................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lock-Out V
UVLO
Rising, 75mV hysteresis 2.0 2.15 2.3 V
I
OUT
= 100mA, T
A
= +25°C, V
OUT
≥ 2.0V -1 +1
I
OUT
= 100mA, V
OUT
< 2.0V -1.5 +1.5
I
OUT
= 100mA, T
A
= -40°C to +85°C -2.5 +2.5
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA, V
IN
> V
OUT
+ 0.5V,
T
A
= -40°C to +85°C
-3 +3
%
Adjustable Output Voltage
Range
1.25 5 V
T
A
= 0°C to +85°C 1.225 1.250 1.275
SET Voltage Threshold
(Adjustable Mode)
V
SET
V
IN
= 2.7V,
I
OUT
= 100mA,
V
OUT
set to 2.0V
T
A
= -40°C to +85°C 1.213 1.288
V
Guaranteed Output Current
(RMS)
I
OUT
V
IN
≥ 2.7V 500 mA
Short-Circuit Current Limit I
LIM
V
OUT
= 0, V
IN
≥ 2.7V 0.55 0.8 1.8 A
In-Regulation Current Limit V
OUT
> 96% of nominal value, V
IN
≥ 2.7V 1.6 A
SET Dual Mode™ Threshold 50 100 150 mV
SET Input Bias Current I
SET
V
SET
= 1.25V -100 +100 nA
I
OUT
= 100µA 125 250
Ground-Pin Current I
Q
I
OUT
= 500mA 140
µA
V
OUT
= 5V 100 220
V
OUT
= 3.3V 120 215
Dropout Voltage (Note 4) V
IN
- V
OUT
I
OUT
= 500mA
V
OUT
= 2.5V 210 360
mV
Line Regulation ΔV
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
-0.15 0 +0.15 %/V
Dual Mode is a trademark of Maxim Integrated Products
Note 1: Thermal properties are specified with product mounted on PC board with one square-inch of copper area and still air. With
minimal copper, the SOT23 package dissipates 712mW at +70°C. With a quarter square inch of copper, it will dissipate
790mW at +70°C. Copper should be equally shared between the IN, OUT, and GND pins.
Note 2: This device is constructed using a unique set of packaging techniques that imposes a limit on the thermal profile to which
the device can be exposed during board-level solder attach and rework. The limit permits only the use of the solder profiles
recommended in the industry standard specification, IPC JEDEC-J-STD-020A, paragraph 7.6, Table 3 for the IR/VPR and
convection reflow. Preheating is required. Hand or wave soldering is not allowed.