MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 1)
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, RESET to GND .....................................-0.3V to +4.0V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
1.62 3.60 V
Input Undervoltage Lockout V
UVLO
V
IN
rising or falling
(180mV typical hysteresis)
1.30 1.60 V
I
OUT
= 150mA, T
A
= +25°C -0.5 +0.5
Output Voltage Accuracy
I
OUT
= 1mA to 300mA,
V
IN
= (V
OUT
+ 0.5V) to +3.6V
-1.5 +1.5
%
Maximum Output Current I
OUT
Continuous 300 mA
RMS
Current Limit I
LIM
V
OUT
= 96% of nominal value 450 550 650 mA
No load 70 140
I
OUT
= 300mA 90Ground Current I
Q
Dropout (Note 2) 70
µA
Dropout Voltage V
IN
- V
OUT
I
OUT
= 300mA, V
OUT
≥ 1.8V (Note 2) 100 200 mV
Load Regulation ∆V
LDR
I
OUT
= 1mA to 300mA 0.02 0.3 %
Line Regulation ∆V
LNR
V
IN
= (V
OUT
+ 0.5V) to +3.6V, I
OUT
= 1mA -0.15 +0.01 +0.15 % / V
Output Noise 10Hz to 100kHz, I
OUT
= 10mA, V
OUT
= 1.5V 86 µV
RMS
PSRR f < 1kHz, I
OUT
= 10mA 70 dB
SHUTDOWN
T
A
= +25°C 0.001 1
Shutdown Supply Current I
OFF
SHDN = GND
T
A
= +85°C 0.01
µA
V
IH
V
IN
= 1.62V to 3.6V 1.4
SHDN Input Logic Levels
V
IL
V
IN
= 1.62V to 3.6V 0.6
V
T
A
= +25°C 1 100
SHDN Input Bias Current I
SHDN
V
SHDN
= 0 or 3.6V
T
A
= +85°C5
nA
Turn-On Delay From SHDN high to OUT high, V
OUT
= 1.8V 90 µs
(27 Seiten)
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