Datasheet

MAX8869
1A, Microcap, Low-Dropout,
Linear Regulator
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS
(V
IN
= +2.7V or V
OUT(NOM)
+ 0.5V (whichever is greater), SHDN = IN, SS = open, SET = GND, C
OUT
= 1µF, T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 3)
Note 1: Dropout voltage is (V
IN
- V
OUT
) when V
OUT
falls to 100mV below the value of V
OUT
measured when V
IN
= V
OUT(NOM)
+0.5V.
Since the minimum input voltage is 2.7V, this specification is only meaningful when V
OUT
≥ 2.7V.
Note 2: The output voltage is externally set using a resistive voltage-divider from OUT to SET.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
PARAMETER
SYMBOL CONDITIONS MIN MAX UNITS
Input Voltage Range V
IN
2.7 5.5 V
Input Undervoltage Lockout Typical hysteresis = 50mV 2.3 2.6 V
Output Voltage Accuracy I
OUT
= 1mA, T
A
= +85°C -1 1 %
SET Regulation Voltage
(Adjustable Mode)
I
OUT
= 150mA, T
A
= +85°C 792 808 mV
Load Regulation ∆V
LDR
I
OUT
= 1mA to 1A 2.0 %/A
Ad j ustab l e O utp ut V ol tag e Rang e 0.8 5 V
Maximum Output Current I
OUT
Continuous 1 A
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V 1.0 A
In-Regulation Current Limit I
LIM
V
SET
= +0.76V 2.0 A
SET Dual Mode Threshold 40 120 mV
SET Input Bias Current I
SET
V
SET
= +0.9V 300 nA
Ground Current I
GND
I
OUT
= 100µA 2.0 mA
Dropout Voltage (Note 1) I
OUT
= 1A, V
OUT
= +3.3V (Note 2) 350 mV
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= +5.5V, V
OUT
= 0V 10 µA
V
IH
1.7
SHDN Input Threshold
V
IL
+2.7V < V
IN
< +5.5V
0.6
V
SHDN Input Bias Current SHDN = GND or IN 0.1 µA
RST Output Low Voltage I
SINK
= 1mA 0.1 V
IN Operating Voltage Range for
RST Valid
I
SINK
= 10µA 1.0 5.5 V
RST Leakage V
RST
= +5.5V 1 µA
RST Trip Level Referred to
Nominal V
OUT
Falling edge, typical hysteresis = 10mV 88 95 % OUT
RST Release Delay Rising edge 1 6 ms