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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1810 Datasheet

Network Interface Card Smart Regulator

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MAX1810 pdf
19-1678; Rev 0; 4/00
Network Interface Card Smart Regulator
General Description
The MAX1810 powers peripheral component intercon-
nect (PCI) Ethernet network interface cards (NICs),
modem cards, and other devices that utilize both the
main and auxiliary (standby) voltages supplied by PCI-
compliant systems. The device generates an uninter-
rupted +3.3V at up to 500mA from either a +5V main or
a +5V standby supply. When both +5V inputs fall below
+4.1V, an internal switch connects the +3.3V auxiliary
input to the output.
An auxiliary switch resistance of only 0.18minimizes
output droop from the +3.3V auxiliary supply. In addi-
tion, the MAX1810 guarantees that no reverse current
flows from the output to any unbiased or inactive input,
and remains stable with as little as 1µF of output
bypass capacitance at its output.
The MAX1810 is available in a compact 8-pin high-
power (0.9W) SO package.
________________________Applications
PCI Adapter Cards
Network Interface Cards
Modem Cards
Features
o Uninterrupted +3.3V Output
o Up to 500mA Output Current
o High-Power 0.9W SO-8 Package
o Thermal and Overcurrent Protection
o Only 1µF Output Capacitor
o Internal 0.18+3.3V Auxiliary Switch
o No Reverse Current to Inactive Inputs
PART
MAX1810ESA
Ordering Information
TEMP. RANGE
-40oC to +85oC
PIN-PACKAGE
8 SO
Typical Operating Circuit
+5V MAIN
INPUT
MAIN
OUT
+5V STBY
INPUT
STBY MAX1810
+3.3V AUX
INPUT
AUX
GND
OUT
+3.3V, 500mA
COUT
1.0µF
TOP VIEW
Pin Configuration
STBY 1
MAIN 2
OUT 3
AUX 4
MAX1810
8 GND
7 GND
6 GND
5 GND
SO
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1810 Datasheet

Network Interface Card Smart Regulator

No Preview Available !

MAX1810 pdf
Network Interface Card Smart Regulator
ABSOLUTE MAXIMUM RATINGS
MAIN, STBY, AUX, OUT to GND ...........................-0.3V to +6.0V
OUT to AUX ...........................................................-0.3V to +6.0V
OUT Maximum Output Current .......................................1750mA
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 11.75mW/°C above +70°C)..............900mW
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
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.
ELECTRICAL CHARACTERISTICS
(VMAIN = VSTBY = +5.0V, VAUX = +3.3V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
MAIN or STBY Input Range
AUX Input Range
Maximum Load Current
MAIN or STBY Quiescent Current
AUX Quiescent Current
Reverse Leakage from AUX to
MAIN or STBY
Reverse Leakage from MAIN or
STBY to AUX
OUT Load Capacitance
MAIN or STBY Detect Threshold
MAIN or STBY High Threshold
MAIN or STBY Hysteresis
OUT Voltage
OUT Line Regulation
OUT Load Regulation
AUX to OUT Voltage Drop
AUX Switch Resistance
AUX Disable Threshold
Thermal Shutdown
Thermal Shutdown Hysteresis
Current-Limit Threshold
CONDITIONS
IOUT = 10mA
VMAIN = VSTBY = 0, VAUX = +3.6V
VAUX = +3.6V, VMAIN or VSTBY = 0
VAUX = 0, VMAIN or VSTBY = +5.5V
COUT ESR < 50m
MAIN or STBY falling
MAIN or STBY rising
+4.5V < (VMAIN or VSTBY) < +5.5V, 0 < IOUT < 400mA
+4.5V< (VMAIN or VSTBY) < +5.5V
IOUT = 30mA to 400mA, VMAIN or VSTBY = +5V
IOUT = 400mA
MAIN = STBY = GND
VAUX = VOUT = 0
MIN TYP MAX UNITS
4.5 5.5 V
3.0 3.6 V
500 mA
0.75 3
mA
0.2 0.5 mA
1 20 µA
1 100
3.925
3.234
2.5
520
1
4.100
150
3.3
0.01
0.22
72
0.180
170
20
900
4.275
4.475
3.366
118
0.295
2.8
1750
µA
µF
V
V
mV
V
%
%
mV
V
°C
°C
mA
2 _______________________________________________________________________________________


Part Number MAX1810
Description Network Interface Card Smart Regulator
Maker Maxim
Total Page 8 Pages
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