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MAX1792EUA18+T

P1-P3P4-P6P7-P9P10-P10
General Description
The MAX1792 low-dropout linear regulator operates
from a +2.5V to +5.5V supply and delivers a guaran-
teed 500mA load current with low 130mV dropout. The
high-accuracy (±1%) output voltage is preset at an
internally trimmed voltage (see
Selector Guide
) or can
be adjusted from 1.25V to 5.0V with an external resis-
tive divider.
An internal PMOS pass transistor allows the low 80µA
supply current to remain independent of load, making
this device ideal for portable battery-operated equip-
ment such as personal digital assistants (PDAs), cellu-
lar phones, cordless phones, base stations, and
notebook computers.
Other features include an active-low open-drain reset
output with a 4ms timeout period that indicates when
the output is out of regulation, a 0.1µA shutdown mode,
short-circuit protection, and thermal shutdown protec-
tion. The device is available in a miniature 1.3W, 8-pin
power-µMAX package with a metal pad on the under-
side of the package.
________________________Applications
Notebook Computers
Cellular and Cordless Telephones
Personal Digital Assistants (PDAs)
Palmtop Computers
Base Stations
USB Hubs
Docking Stations
Features
♦ Guaranteed 500mA Output Current
♦ Low 130mV Dropout at 500mA
♦ Up to ±1% Output Voltage Accuracy
Preset at 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V
Adjustable from 1.25V to 5.0V
♦ Reset Output with 4ms Timeout Period
♦ Low 80µA Ground Current
♦ 0.1µA Shutdown Current
♦ Thermal Overload Protection
♦ Output Current Limit
♦ Tiny 1.3W Power-µMAX Package
MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
________________________________________________________________
Maxim Integrated Products
1
POWER-μMAX
SET
GND
+
EP
SHDN
1
2
8
7
OUT
OUTIN
RST
IN
TOP VIEW
3
4
6
5
MAX1792
Pin Configuration
NC
MAX1792
IN
IN
C
IN
1μF
C
OUT
3.3μF
R
RST
100k
V
IN
= +2.5V TO +5.5V
ON
OFF
SHDN
OUT
V
OUT
OUT
RST
GNDSET
TO
μC
Typical Operating Circuit
19-1699; Rev 2; 11/11
Ordering Information
Selector Guide
PART AND SUFFIX V
OUT
μMAX TOP MARK
MAX1792EUA15+ 1.5V or Adj. AAAE
MAX1792EUA18+ 1.8V or Adj. AAAA
MAX1792EUA25+ 2.5V or Adj. AAAB
MAX1792EUA33+ 3.3V or Adj. AAAC
MAX1792EUA50+ 5.0V or Adj. AAAD
MAX1792EUA33/V+ 3.3V or Adj. AACP
PART* TEMP RANGE PIN-PACKAGE
MAX1792EUA_ _+ -40°C to +85°C 8 Power-μMAX
MAX1792EUA_ _/V+ -40°C to +85°C 8 Power-μMAX
*
Insert the desired two-digit suffix (see Selector Guide) into the
blanks to complete the part number.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Contact factory for other preset output voltages.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT(NOM)
+ 500mV, or V
IN
= +2.5V (whichever is greater), SHDN = IN, T
A
= 0°C to +85°C, unless otherwise noted. Typical
values are at T
A
= +25°C.)
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, SHDN, RST, SET to GND ....................................-0.3V to +6V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration ........................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Power-µMAX (derate 17mW/°C above +70°C).......1.3W
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
Soldering Temperature (reflow) .......................................+260°C
Dual Mode is a trademark of Maxim Integrated Products.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lockout V
UVLO
Rising, 75mV hysteresis 2.0 2.15 2.3 V
Preset V
OUT
2.5V -1 +1
I
OUT
= 100mA,
T
A
= +85°C
Preset V
OUT
< 2.5V -1.5 +1.5
%
I
OUT
= 100mA, T
A
= 0°C to +85°C -2 +2
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA, V
IN
> V
OUT + 0.5V,
T
A = 0°C to +85°C
-3 +3
%
Adjustable Output Voltage
Range
1.25 5 V
T
A
= +85°C 1.229 1.250 1.271
SET Voltage Threshold
(Adjustable Mode)
V
SET
V
IN
= +2.7V,
V
OUT
set to 2.0V,
I
OUT
= 100mA
T
A
= 0°C to +85°C 1.219 1.281
V
Maximum Output Current I
OUT
V
IN
2.7V 500 mA
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V, V
IN
2.7V 0.55 0.8 1.8 A
In-Regulation Current Limit V
OUT
> 96% of nominal value, V
IN
2.7V 1.6 A
SET Dual Mode™ Threshold 50 100 150 mV
SET Input Bias Current I
SET
V
SET
= 1.25V -100 +100 nA
I
OUT
= 1mA 80 250
Ground-Pin Current I
Q
I
OUT
= 500mA 110
μA
V
OUT
= 5.0V 120 225
V
OUT
= 3.3V 130 250
Dropout Voltage (Note 1)
V
IN
-
V
OUT
I
OUT
= 500mA
V
OUT
= 2.5V 210 360
mV
Line Regulation V
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
-0.15 0 +0.15 %/V
Load Regulation V
LDR
I
OUT
= 1mA to 500mA 0.4 1.0 %
Output Voltage Noise 10Hz to 1MHz, C
OUT = 3.3μF (ESR < 0.1)
115 μV
RMS
SHUTDOWN
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= 5.5V 0.1 15 μA
V
IH
2.5V < V
IN
< 5.5V 1.6
SHDN Input Threshold
V
IL
2.5V < V
IN
< 5.5V 0.6
V
SHDN Input Bias Current SHDN = IN or GND 10 100 nA
MAX1792
500mA Low-Dropout
Linear Regulator in µMAX
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS
(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)
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
OUT(NOM)
+ 500mV, or V
IN
= +2.5V (whichever is greater), SHDN = IN, T
A
= 0°C to +85°C, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET OUTPUT
Reset Output Low Voltage V
OL
RST sinking 1mA 0.01 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 93 96 %
RST Release Delay t
RP
Rising edge of OUT to rising edge of RST 1.5 4.5 8 ms
THERMAL PROTECTION
Thermal Shutdown Temperature T
SHDN
170 °C
Thermal Shutdown Hysteresis T
SHDN
20 °C
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lockout V
UVLO
Rising or falling 2.0 2.3 V
I
OUT
= 100mA -2 +2
Output Voltage Accuracy
(Preset Mode)
V
OUT
I
OUT
= 1mA to 500mA -3 +3
%
Adjustable Output Voltage
Range
1.25 5 V
SET Voltage Threshold
(Adjustable Mode)
V
SET
I
OUT
= 100mA 1.212 1.288 V
Maximum Output Current I
OUT
500 mA
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V 0.55 1.8 A
SET Dual Mode Threshold 50 150 mV
SET Input Bias Current I
SET
V
SET
= 1.25V -100 +100 nA
Ground-Pin Current I
Q
I
OUT
= 1mA 250 μA
V
OUT
= 5.0V 225
V
OUT
= 3.3V 250
Dropout Voltage (Note 1)
V
IN
-
V
OUT
I
OUT
= 500mA
V
OUT
= 2.5V 360
mV
Line Regulation V
LNR
V
IN
from (V
OUT
+ 100mV) to 5.5V,
I
LOAD
= 5mA
-0.15 +0.15 %/V
Load Regulation V
LDR
I
OUT
= 1mA to 500mA 1.0 %
SHUTDOWN
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= +5.5V
15 μA
V
IH
2.5V < V
IN
< 5.5V 1.6
SHDN Input
Threshold
V
IL
2.5V < V
IN
< 5.5V 0.6
V
SHDN Input Bias Current I
SHDN
SHDN = IN or GND 100 nA
P1-P3P4-P6P7-P9P10-P10

MAX1792EUA18+T

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