Datasheet

MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT(NOM)
+ 500mV, or V
IN
= +2.5V (whichever is greater), SHDN = IN, T
A
= 0°C to +85°C, unless otherwise noted. Typical
values are at T
A
= +25°C.)
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, RST, SET to GND ....................................-0.3V to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration ........................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Power-µMAX (derate 17mW/°C above +70°C).......1.3W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Dual Mode is a trademark of Maxim Integrated Products.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lockout V
UVLO
Rising, 75mV hysteresis 2.0 2.15 2.3 V
Preset V
OUT
 2.5V -1 +1
I
OUT
= 100mA,
T
A
= +85°C
Preset V
OUT
< 2.5V -1.5 +1.5
%
I
OUT
= 100mA, T
A
= 0°C to +85°C -2 +2
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA, V
IN
> V
OUT + 0.5V,
T
A = 0°C to +85°C
-3 +3
%
Adjustable Output Voltage
Range
1.25 5 V
T
A
= +85°C 1.229 1.250 1.271
SET Voltage Threshold
(Adjustable Mode)
V
SET
V
IN
= +2.7V,
V
OUT
set to 2.0V,
I
OUT
= 100mA
T
A
= 0°C to +85° C 1.219 1.281
V
Maximum Output Current I
OUT
V
IN
 2.7V 500 mA
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V, 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
= 1mA 80 250
Ground-Pin Current I
Q
I
OUT
= 500mA 110
μA
V
OUT
= 5.0V 120 225
V
OUT
= 3.3V 130 250
Dropout Voltage (Note 1)
V
IN
-
V
OUT
I
OUT
= 500mA
V
OUT
= 2.5V 210 360
mV
Line Regulation V
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
-0.15 0 +0.15 %/V
Load Regulation V
LDR
I
OUT
= 1mA to 500mA 0.4 1.0 %
Output Voltage Noise 10Hz to 1MHz, C
OUT = 3.3μF (ESR < 0.1)
115 μV
RMS
SHUTDOWN
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= 5.5V 0.1 15 μA
V
IH
2.5V < V
IN
< 5.5V 1.6
SHDN Input Threshold
V
IL
2.5V < V
IN
< 5.5V 0.6
V
SHDN Input Bias Current SHDN = IN or GND 10 100 nA