Datasheet

MAX8880/MAX8881
12V, Ultra-Low-I
Q
, Low-Dropout
Linear Regulators with POK
_______________________________________________________________________________________ 3
0
1.0
0.5
2.5
2.0
1.5
4.0
3.5
3.0
4.5
042681012
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX8880/1-01
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
I
OUT
= 30 mA
NO LOAD
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-40 10-15 35 60 85
SUPPLY CURRENT
vs. TEMPERATURE
MAX8880/1-02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
V
OUT
= 1.8V
0
150
100
50
200
250
300
350
400
450
500
0 50 100 150 200
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX8880/1-03
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
0
70
60
50
40
30
20
10
0.1 101 100 1k 10k
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX8880/1-04
FREQUENCY (Hz)
PSRR (dB)
10 100 10k1k 100k
FREQUENCY (Hz)
10
1
0.01
0.10
MAX186-14A
OUTPUT NOISE SPECTRAL DENSITY
vs. FREQUENCY
NOISE (µV/√Hz)
0
50
100
150
200
250
300
350
400
0 20406080100
OUTPUT NOISE
vs. LOAD CURRENT
MAX8880/1-06
LOAD CURRENT (mA)
OUTPUT NOISE (μV
RMS
)
V
OUT
= 1.8V
C
OUT
= 1.0μF
C
OUT
= 4.7μF
Typical Operating Characteristics
(V
IN
= 5V, V
OUT
= 3.3V, I
OUT
= 30mA, C
OUT
= 4.7µF, T
A
= +25°C, unless otherwise noted. See Figure 1.)
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Output accuracy with respect to nominal preset voltages. FB = OUT.
Note 3: This specification is valid for V
IN
> 3V.
Note 4: The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+ 1V.
ELECTRICAL CHARACTERISTICS (continued)
(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)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Thermal Shutdown Threshold T
TSD
(Hysteresis = 15°C)
160
°C
OUT Noise
V
OUT
(
NOISE
)
f = 10Hz to 100kHz, I
OUT
= 1mA
300
μV
RMS