Rainbow Electronics MAX8842 User Manual
Page 2
MAX8840/MAX8841/MAX8842
Ultra-Low-Noise, High PSRR, Low-Dropout,
150mA Linear Regulators in µDFN
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT
+ 0.5V, T
A
= -40°C to +85°C, unless otherwise noted. C
IN
= 1µF, C
OUT
= 1µF, C
BP
= 10nF. Typical values are at +25°C;
the MAX8842 is tested with 2.45V output, unless otherwise noted.) (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 .................................................................-0.3V to +7V
Output Short-Circuit Duration ............................................Infinite
OUT, SHDN to GND ......................................-0.3V to (IN + 0.3V)
FB, BP, N.C. to GND..................................-0.3V to (OUT + 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
6-Pin µDFN (derate 2.1mW/°C above +70°C) .............0.168W
θ
JA
..................................................................................477°C/W
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 Range
V
IN
2
6
V
I
OUT
= 1mA, T
A
= +25°C
-1
+1
I
OUT
= 100µA to 80mA, T
A
= +25°C
-2
+2
Output Voltage Accuracy
I
OUT
= 100µA to 80mA
-3
+3
%
Maximum Output Current
I
OUT
150
mA
Current Limit
I
LIM
OUT = 90% of nominal value
150
200
300
mA
V
OUT
≥ 3V, I
OUT
= 80mA
80
170
V
OUT
≥ 3V, I
OUT
= 120mA
120
2.5V
≤ V
OUT
< 3V, I
OUT
= 80mA
90
200
2.5V
≤ V
OUT
< 3V, I
OUT
= 120mA
135
2V
≤ V
OUT
< 2.5V, I
OUT
= 80mA
120
250
Dropout Voltage (Note 2)
2V
≤ V
OUT
< 2.5V, I
OUT
= 120mA
180
mV
I
OUT
= 0.05mA
40
90
Ground Current
I
Q
V
IN
= V
OUT(nom)
- 0.1V, I
OUT
= 0mA
220
500
µA
Line Regulation
V
LNR
V
IN
= (V
OUT
+ 0.5V) to 6V, I
OUT
= 0.1mA
0.001
%/V
Load Regulation
V
LDR
I
OUT
= 1mA to 80mA
0.003
%/mA
T
A
= +25°C
0.003
1
Shutdown Supply Current
I
SHDN
SHDN = 0V
T
A
= +85°C
0.05
µA
MAX8840
78
f = 1kHz, I
OUT
= 10mA
MAX8841/MAX8842
72
MAX8840
75
f = 10kHz, I
OUT
= 10mA
MAX8841/MAX8842
65
MAX8840
54
Ripple Rejection
PSRR
f = 100kHz, I
OUT
= 10mA
MAX8841/ MAX8842
46
dB