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MAX1806EUA15+T

P1-P3P4-P6P7-P9P10-P10
MAX1806
500mA, Low-Voltage Linear Regulator in µMAX
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
OUT(SETPOINT)
+ 500mV or V
IN
= +2.25V whichever is greater, SET = GND, SHDN = IN, T
A
= -40°C to +85°C, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER-OK
POK Output Low Voltage V
OL
Sinking 2mA 50 mV
Operating Voltage Range for
Valid POK Output
Sinking 100µA 1.0 5.5 V
Output High-Leakage Current V
POK
= +5.5V 100 nA
Threshold Rising edge, referred to V
OUT(NOMINAL)
89 97 %
Note 1: Dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
and when V
IN
= V
OUT(NOM)
+0.5V.
For 2.25V ≤ V
OUT
≤ 4.0V, dropout voltage limits are linearly interpolated from the values listed. For V
OUT
< 4.0V, dropout
voltage limit is equal to the value for V
OUT
= 4.0V.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(MAX1806EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 10µF, T
A
= +25°C, unless otherwise noted.)
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
1.5 2.5 3.02.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX1806 toc01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
OUT
= 0mA
I
OUT
= 500mA
6.0
3.25
3.26
3.28
3.27
3.30
3.31
3.29
3.32
0 200 300100 400 500 600 700 800
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1806 toc02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
3.28
3.30
3.29
3.32
3.31
3.33
3.34
-40 10-15 35 60 85
OUTPUT VOLTAGE vs. TEMPERATURE
MAX1806 toc03
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
V
IN
= V
OUT
+ 500mV
I
OUT
= 0
0
100
50
200
150
250
300
350
400
0 200 300100 400 500 600 700 800
DROPOUT VOLTAGE vs. LOAD CURRENT
MAX1806 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.28
2.0 2.5 3.0 3.5 4.0 4.5
DROPOUT VOLTAGE vs.
OUTPUT VOLTAGE
MAX1806 toc05
OUTPUT VOLTAGE (V)
DROPOUT VOLTAGE (V)
0
100
50
150
200
250
300
350
400
450
500
550
600
2.0 3.0 4.0 5.0 6.0
GROUND-PIN CURRENT vs.
INPUT VOLTAGE
MAX1806 toc06
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (µA)
3.52.5 4.5 5.5
I
OUT
= 0mA
I
OUT
= 500mA
MAX1806
500mA, Low-Voltage Linear Regulator in µMAX
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(MAX1806EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 10µF, T
A
= +25°C, unless otherwise noted.)
150
160
180
170
190
200
-40 10-15 35 60 85
GROUND-PIN CURRENT vs.
TEMPERATURE
MAX1806 toc08
TEMPERATURE (°C)
GROUND-PIN CURRENT (µA)
V
IN
= V
OUT
+ 500mV
I
OUT
= 0
-60
0.01 0.1 1 10 100 1000
-50
-40
-30
-20
-10
0
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1806 toc09
FREQUENCY (kHz)
PSRR (dB)
C
OUT
= 10µF
I
OUT
= 50mA
10
0.001
0.1 1 100 1000
OUTPUT SPECTRAL NOISE DENSITY
vs. FREQUENCY
0.01
0.1
1
MAX1806 toc10
FREQUENCY (kHz)
OUTPUT SPECTRAL NOISE DENSITY (µV/√Hz)
10
C
OUT
= 10µF
I
OUT
= 50mA
OUTPUT NOISE DC TO 1MHz
MAX1806 toc11
20ms/div
V
OUT
1mV/div
V
OUT
= 3.3V
R
OUT
= 66Ω (50mA)
0.01
0 200100 400 600 800700
REGION OF STABLE C
OUT
ESR
vs. LOAD CURRENT
0.1
1
10
100
MAX1806 toc12
FREQUENCY (kHz)
REGION OF C
OUT
ESR
300 500
C
OUT
= 10µF
STABLE REGION
LOAD-TRANSIENT RESPONSE
MAX1806 toc13
10µs/div
I
OUT
200mA/div
V
OUT
20mV/div
V
IN
= V
OUT
+ 500mV
C
IN
= 10µF
R
OUT
= 660Ω TO 6.6Ω (5mA TO 500mA)
MAX1806
500mA, Low-Voltage Linear Regulator in µMAX
6 _______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1, 2 IN
Regulator Input. Supply voltage can range from +2.25V to +5.5V. Bypass with a 1µF capacitor to GND (see
Capacitor Selection and Regulation Stability). Connect both input pins together externally.
3 POK
Open-Drain, Active-Low Power-OK Output. POK remains low while the output voltage (V
OUT
) is below the
POK threshold. Connect a 100kΩ pullup resistor from POK to OUT.
4 SHDN
Active-Low Shutdown Input. A logic low at SHDN reduces supply current to 0.02µA. In shutdown, the POK
output is low. Connect SHDN to IN for normal operation.
5 GND
Ground. This pin and the exposed pad also function as a heatsink. Solder both to a large pad or to the
circuit-board ground plane to maximize power dissipation.
6 SET
Voltage-Setting Input. Connect SET to GND for preset output. Connect an external resistive voltage-divider
from OUT to SET to set the output voltage between 0.8V and 4.5V. The SET regulation voltage is 800mV.
7, 8 OUT
Regulator Output. OUT sources up to 500mA. Bypass OUT with a 10µF low-ESR capacitor to GND.
Connect both OUT pins together externally.
LINE-TRANSIENT RESPONSE
MAX1806 toc15
200µs/div
V
IN
1V/div
6V
3V
V
OUT
10mV/div
SHUTDOWN WAVEFORM
MAX1806 toc16
20µs/div
2V
3V
0
0
V
OUT
1V/div
R
OUT
= 6.6Ω (500mA)
V
SHDN
1V/div
Typical Operating Characteristics (continued)
(MAX1806EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 10µF, T
A
= +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1806 toc14
10µs/div
I
OUT
200mA/div
V
OUT
50mV/div
V
IN
= V
OUT
+ 100mV
C
IN
= 10µF
R
OUT
= 660Ω TO
6.6Ω (5mA TO 500mA)
POK WAVEFORM
MAX1806 toc17
200µs/div
V
IN
2V/div
V
OUT
2V/div
5V
0
0
0
V
POK
2V/div
R
OUT
= 66Ω (50mA)
P1-P3P4-P6P7-P9P10-P10

MAX1806EUA15+T

Mfr. #:
Buy MAX1806EUA15+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 500mA
Lifecycle:
New from this manufacturer.
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