Datasheet

MAX8880/MAX8881
12V, Ultra-Low-I
Q
, Low-Dropout
Linear Regulators with POK
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT
+ 1V, SHDN = IN, 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 to GND ................................................................-14V to +14V
SHDN to GND.............................................-0.3V to (V
IN
+ 0.3V),
-0.3V to +0.3V when V
IN
< 0V
OUT, FB to GND...............................-0.3V to +6V when V
IN
> 5.7V,
-0.3V to (V
IN
+ 0.3V) when 0V ≤ V
IN
≤ 5.7V,
-0.3V to +0.3V when V
IN
< 0V
POK to GND ...........................................................-0.3V to +14V
OUT Continuous Current...................................................200mA
OUT Short Circuit...........................................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW
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.........................................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range V
IN
2.5 12 V
Supply Current I
IN
V
IN
= 12V 3.5 10 μA
Shutdown Supply Current
I
IN
(
SHDN
)
V
SHDN
= 0, V
IN
= 12V, V
OUT
= 0, T
A
= +25°C
1.5 3 μA
Input Undervoltage Lockout V
UVLO
2.1 2.4 V
T
A
= +25°C
1.238 1.257 1.276
T
A
= 0°C to +85°C
1.232 1.282
FB Voltage, Adjustable
Mode
V
FB
MAX8880,
I
OUT
= 20mA
T
A
= -40°C to +85°C 1.219 1.295
V
T
A
= +25°C
-1.5
1.5
T
A
= 0°C to +85°C -2 2
OUT Voltage Accuracy
(Note 2)
MAX8881,
I
OUT
= 20mA
T
A
= -40°C to +85°C
-3 3
%
OUT Voltage Range V
OUT
MAX8880
1.25
5.5 V
OUT Line Regulation V
IN
= V
OUT
+ 1V to 12V
0.01 0.05
%/V
OUT Load Regulation (Note 3)
I
OUT
= 10μA to 100mA
0.006 0.015
%/mA
Current Limit (Note 3) I
OUT
200 400
mA
Dropout Voltage (Notes 3, 4) ΔV
DO
I
OUT
= 50mA
100 200
mV
IN Reverse Leakage Current I
IN(REV)
V
IN
= -12V, V
SHDN
= 0 1mA
Foldback Current Limit
I
OUT
(
SC
)
V
IN
= 5V, V
OUT
= 0
250
mA
V
IH
2
SHDN Input Threshold
V
IL
V
IN
= 2.5V to 12V
0.5
V
SHDN Input Bias Current V
SHDN
= 0 to 12V, T
A
= +25°C
-100 100
nA
FB Input Bias Current I
FB
FB = 1.25V, T
A
= +25°C, MAX8880 only 0 2 20 nA
T
A
= +25°C
87.5 90.5 93.5
Falling
T
A
= -40°C to +85°C
86 95
POK Trip Threshold
Hysteresis 1.5
% of
V
OUT
POK Off-Current I
POK
V
POK
= 12V, T
A
= +25°C
100
nA
POK Low Voltage V
POK
I
POK
= 1mA 50
200
mV