Datasheet

MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT(NOM)
+ 500mV, or V
IN
= +2.5V (whichever is greater), SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
ELECTRICAL CHARACTERISTICS (continued)
(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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET OUTPUT
Reset Output Low Voltage V
OL
RST sinking 1mA 0.01 0.1 V
Operating Voltage Range for
Valid Reset
RST sinking 100μA 1.0 5.5 V
RST Output High Leakage
Current
V
RST
= +5.5V 100 nA
RST Threshold Rising edge, referred to V
OUT(NOMINAL)
90 93 96 %
RST Release Delay t
RP
Rising edge of OUT to rising edge of RST 1.5 4.5 8 ms
THERMAL PROTECTION
Thermal Shutdown Temperature T
SHDN
170 °C
Thermal Shutdown Hysteresis T
SHDN
20 °C
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lockout V
UVLO
Rising or falling 2.0 2.3 V
I
OUT
= 100mA -2 +2
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA -3 +3
%
Adjustable Output Voltage
Range
1.25 5 V
SET Voltage Threshold
(Adjustable Mode)
V
SET
I
OUT
= 100mA 1.212 1.288 V
Maximum Output Current I
OUT
500 mA
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V 0.55 1.8 A
SET Dual Mode Threshold 50 150 mV
SET Input Bias Current I
SET
V
SET
= 1.25V -100 +100 nA
Ground-Pin Current I
Q
I
OUT
= 1mA 250 μA
V
OUT
= 5.0V 225
V
OUT
= 3.3V 250
Dropout Voltage (Note 1)
V
IN
-
V
OUT
I
OUT
= 500mA
V
OUT
= 2.5V 360
mV
Line Regulation V
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
-0.15 +0.15 %/V
Load Regulation V
LDR
I
OUT
= 1mA to 500mA 1.0 %
SHUTDOWN
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= +5.5V
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 I
SHDN
SHDN = IN or GND 100 nA