MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (Notes 2, 3) (continued)
(V
IN_
= V
OUT_(TYP)
+ 1V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
REF2 Load Regulation
I
OUT1
= 0 to 250mA, C
OUT1
= 3.3µF
I
REF2
= 0µA to 10µA 6 mV
CONDITIONS
%/mA
0.02
Load Regulation
0.015
%/V
0.02 0.10
Line Regulation
V
IN1
= (V
OUT1 (TYP)
+ 1V)
to 11.5V
0.03 0.12
V
IN2
= (V
OUT2 (TYP)
+ 1V)
to 11.5V
UNITSMIN TYP MAXPARAMETER
- 277 -
REF2 Output Voltage C
REF2
= 0.1µF 1.217 1.250 1.277 V
REF2 Line Regulation V
IN2
= 2.5V to 11.5V 1 mV
PWROK1 Trip Voltage Falling edge at SET1 1.165 1.200 1.235 V
PWROK1 Hysteresis Rising edge at SET1 15 mV
PWROK1 Leakage Current V
PWROK1
= 11.5V 0.01 1 µA
PWROK1 Low Voltage I
SINK
= 0.5mA 25 200 mV
SHDN_ Logic Low
SHDN_ Logic High
Active mode, V
IN_
= 11.5V 2.0 V
SHDN_ Leakage Current
V
SHDN_
= 11.5V 0.02 1 µA
SET_ Reference Voltage SET_ = OUT_, I
OUT1
= I
OUT2
= 15mA 1.220 1.250 1.290 V
SET_ Input Bias Current V
SET_
= 1.30V 0.01 0.1 µA
Internal feedback 30
SET_ Threshold
External feedback 250
mV
Thermal Shutdown Temperature 160
Thermal Shutdown Hysteresis 10
°C
Note 2: Guaranteed by design for T
A
= -40°C.
Note 3: Guaranteed for a junction temperature (T
J
) equal to the operating temperature range. E-grade parts are guaranteed by
design to operate up to T
J
= +125°C. For T
J
above +125°C, specifications exceed the operating limits.
Note 4: Dropout voltage is (V
IN
_ - V
OUT
_) when V
OUT
_ falls to 100mV below its nominal value at V
IN
_ = (V
OUT
_ + 1V). For example,
the MAX8862 is tested by measuring the V
OUT
_ at (V
IN_
= 5.95V for the MAX8862L, V
IN_
= 4.175V for the MAX8862T, and
V
IN_
= 3.85V for the MAX8862R) then V
IN_
is lowered until V
OUT_
falls 100mV below the measured value.
0.45 VShutdown mode, V
IN_
= V
OUT_(TYP)
+ 1V to 11.5V
I
OUT1
= I
OUT2
= 15mA
C = 2.2µF, Z
OUT2
= 10mA
- 875 -
C
OUT2
= 2.2µF, 10Hz < f < 1MHz, I
OUT2
= 10mA
10Hz < f < 100kHz
C = 100µF, Z
OUT2
= 10mA
- 667 -
10Hz < f < 100kHz
OUT2 Voltage Noise
- 211 -
µV
RMS
REFERENCE
PWROK1 OUTPUT
SET_ INPUT
THERMAL PROTECTION
10Hz < f < 1MHz
10Hz < f < 1MHz
