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MAX1792EUA18+T

P1-P3P4-P6P7-P9P10-P10
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
2.0 3.0 3.52.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX1792-01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
OUT
= 0A
I
OUT
= 500mA
3.27
3.28
3.29
3.30
3.31
3.32
3.33
0 200100 300 400 500 600 700 800
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1792-02
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
3.27
3.29
3.28
3.31
3.30
3.32
3.33
-40 10-15 35 60 85
OUTPUT VOLTAGE
vs. TEMPERATURE
MAX1792-03
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
V
IN
= V
OUT
+ 500mV
I
OUT
= 0A
0
50
150
100
200
250
0 200 300100 400 500 600 700 800
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1792-04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
T
A
= +85
°
C
T
A
= -40°C
T
A
= +25
°
C
0
40
20
80
60
120
100
140
0 1.0 1.5 2.00.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
MAX1792-05
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (μA)
I
OUT
= 500mA
I
OUT
= 0A
60
80
70
100
90
110
120
130
140
0 200 300100 400 500 600 700 800
GROUND-PIN CURRENT
vs. LOAD CURRENT
MAX1792-06
LOAD CURRENT (mA)
GROUND-PIN CURRENT (μA)
V
IN
= 5.5V
V
IN
= 3.8V
Typical Operating Characteristics
(MAX1792EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 3.3µF, T
A
= +25°C, unless otherwise noted.)
MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
OUT(NOM)
+ 500mV, or V
IN
= +2.5V (whichever is greater), SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
Note 1: Dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
measured when V
IN
= V
OUT(NOM)
+ 0.5V. Since the minimum input voltage is 2.5V, this specification is only meaningful when V
OUT(NOM)
≥ 2.5V. For V
OUT(NOM)
between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V
✕
V
OUT(NOM)
+ 445mV; Guaranteed Maximum
Dropout = -137mV/V
✕
V
OUT(NOM)
+ 704mV. For V
OUT(NOM)
≥ 3.5V: Typical Dropout = 120mV; Guaranteed Maximum Dropout
= 225mV.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
RESET OUTPUT
Reset Output Low Voltage V
OL
RST sinking 1mA 0.1 V
Operating Voltage Range for
Valid Reset
RST sinking 100μA 1.0 5.5 V
RST Output High Leakage
Current
V
RST
= +5.5V 100 nA
RST Threshold Rising edge, referred to V
OUT(NOMINAL)
90 96 %
RST Release Delay t
RP
Rising edge of OUT to rising edge of RST 1.5 8 ms
MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
_______________________________________________________________________________________
5
OUTPUT NOISE DC TO 1MHz
MAX1792-10
20ms/div
V
OUT
200μV/div
V
OUT
= 3.3V
R
OUT
= 66Ω (50mA)
100
0.01
0 200100 400 600
REGION OF STABLE C
OUT
ESR
vs. LOAD CURRENT
0.1
1
10
MAX1792-11
LOAD CURRENT (mA)
C
OUT
ESR (Ω)
300 500
700
800
STABLE REGION
C
OUT
= 3.3μF
C
OUT
= 10μF
LOAD-TRANSIENT RESPONSE
MAX1792-12
10μs/div
I
OUT
500mA/div
V
OUT
20mV/div
V
IN
= V
OUT
+ 500mV
C
IN
= 10μF
R
OUT
= 660Ω TO 6.6Ω (5mA TO 500mA)
60
70
65
80
75
90
85
95
-40 10-15 35 60 85
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1792-07
TEMPERATURE (
°
C)
GROUND-PIN CURRENT (μA)
V
IN
= V
OUT
+ 500 mV
I
OUT
= 0A
-80
0
0.01 0.1 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-10
-30
-60
-70
MAX1792-08
FREQUENCY (kHz)
PSRR (dB)
110
-50
-40
-20
100
C
OUT
= 3.3μF
I
OUT
= 50mA
0.1 1 10 100 1000
OUTPUT SPECTRAL NOISE DENSITY
vs. FREQUENCY
MAX1792-09
FREQUENCY (kHz)
OUTPUT SPECTRAL NOISE DENSITY (μV/√Hz)
10
0.001
0.01
0.1
1
C
OUT
= 3.3μF
I
OUT
= 50mA
Typical Operating Characteristics (continued)
(MAX1792EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 3.3µF, T
A
= +25°C, unless otherwise noted.)
500mA Low-Dropout
Linear Regulator in µMAX
6 _______________________________________________________________________________________
SHUTDOWN WAVEFORM
MAX1792-15
20μs/div
V
SHDN
1V/div
V
OUT
1V/div
0V
0V
2V
3V
R
OUT
= 6.6Ω (500mA)
RST WAVEFORM
MAX1792-16
20ms/div
V
IN
2.5V/div
V
OUT
2V/div
0V
5V
0V
0V
R
OUT
= 66Ω (50mA)
V
RST
2V/div
MAX1792
Pin Description
LINE-TRANSIENT RESPONSE
MAX1792-14
100μs/div
V
IN
1V/div
V
OUT
10mV/div
6V
3V
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1792-13
20μs/div
I
OUT
500mA/div
V
OUT
50mV/div
V
IN
= V
OUT
+ 100mV
C
IN
= 10μF
R
OUT
= 660Ω TO 6.6Ω (5mA TO 500mA)
Typical Operating Characteristics (continued)
(MAX1792EUA33, V
IN
= V
OUT
+ 500mV, SHDN = IN, C
IN
= 1µF, C
OUT
= 3.3µF, T
A
= +25°C, unless otherwise noted.)
PIN NAME FUNCTION
1, 2 IN
Regulator Input. Supply voltage can range from +2.5V to +5.5V. Bypass with a 1µF capacitor to GND (see
Capacitor Selection and Regulator Stability). Connect both input pins together externally.
3
RST
Open-Drain Active-Low Reset Output. RST remains low while the output voltage (V
OUT
) is below the reset
threshold and for at least 4ms after V
OUT
rises above the reset threshold. Connect a 100kΩ pullup resistor
to OUT to obtain an output voltage.
4 SHDN
Active-Low Shutdown Input. A logic low reduces supply current to 0.1µA. In shutdown, the RST output is
low and OUT is pulled low through an internal 5kΩ resistor. Connect 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 to GND for preset output. Connect to a resistive divider between OUT and
GND to set the output voltage between 1.25V and 5.0V.
7, 8
OUT
Regulator Output. Sources up to 500mA. Bypass with a 3.3µF low-ESR capacitor to GND. Use a 4.7µF
capacitor for output voltages below 2V. Connect both output pins together externally.
—EP
Exposed Pad. Solder to ground plane to maximize thermal performance. Not internally connected to
ground.
P1-P3P4-P6P7-P9P10-P10

MAX1792EUA18+T

Mfr. #:
Buy MAX1792EUA18+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 500mA
Lifecycle:
New from this manufacturer.
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