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MAX1773EUP-T

Description
Power Supply Support Circuit, Fixed, 3 Channel, BICMOS, PDSO20, 4.40 MM, TSSOP-20
CategoryPower/power management    The power supply circuit   
File Size391KB,20 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

MAX1773EUP-T Overview

Power Supply Support Circuit, Fixed, 3 Channel, BICMOS, PDSO20, 4.40 MM, TSSOP-20

MAX1773EUP-T Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeTSSOP
package instruction4.40 MM, TSSOP-20
Contacts20
Reach Compliance Code_compli
ECCN codeEAR99
Other featuresIT CAN ALSO OPERATE FROM 4.75V 19V BATTERY SUPPLY
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G20
JESD-609 codee0
length6.5 mm
Humidity sensitivity level1
Number of channels3
Number of functions1
Number of terminals20
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply voltage (Vsup)28 V
Minimum supply voltage (Vsup)4.75 V
Nominal supply voltage (Vsup)28 V
surface mountYES
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width4.4 mm
19-1796; Rev 1; 1/03
KIT
ATION
EVALU
BLE
AVAILA
Power Source Selector for
Dual-Battery Systems
Features
o
Patented
7-MOSFET Topology Offers Low-Cost
Solution
o
Automatically Detects and Responds to:
Low Battery Voltage Condition
Battery Insertion and Removal
AC Adapter Presence
o
Direct Drive of P-Channel MOSFETs
o
Simplifies Power Management µP Firmware
o
Extends Battery Life by Allowing Power
Management µP to Enter Standby
o
4.75V to 28V AC Adapter Input Voltage Range
o
Integrated LDO with 1mA Drive Capability
o
Small Footprint 20-Pin TSSOP Package
General Description
The MAX1773/MAX1773A highly integrated ICs serve
as the control logic for a system with multiple power
sources. They directly drive external P-channel
MOSFETs to select from an AC adapter and dual bat-
tery sources for charge and discharge. The selection is
made based on the presence of the power sources and
the state of the batteries. The MAX1773/MAX1773A
detect low battery conditions using integrated analog
comparators and check for the presence of a battery
by using battery thermistor outputs.
The MAX1773/MAX1773A are designed for use with a
buck topology charger. They provide a simple and easily
controlled solution to a difficult analog power control prob-
lem. The MAX1773/MAX1773A provide most of the power
source monitoring and selection, freeing the system power
management microprocessor (µP) for other tasks. This not
only simplifies development of the power management
firmware for the µP but also allows the µP to enter standby,
thereby reducing system power consumption.
The MAX1773A is recommended for new designs.
MAX1773/MAX1773A
Ordering Information
PART
MAX1773EUP
MAX1773AEUP
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP
20 TSSOP
________________________Applications
Notebook and Subnotebook Computers
PDAs and Handy-Terminals
Internet Tablets
Dual-Battery Portable Equipment
Pin Configuration appears at end of data sheet.
Covered by U.S. Patent number 5,764,032.
Typical Operating Circuit
FROM HOST
µP
BATSEL
V
DD
MINV
3.3V
SYSTEM LOGIC SUPPLY
TO HOST
µP
AC ADAPTER
INPUT
ACPRES
BATSTAT
ACDET
PDS
3.3V
MAX1773
MAX1773A
EXTLD
THMA
BATA
TCOMP
THMB
BATB
COMB
DISB
CHGB
BATTERY
B
BATTERY
A
COMA
DISA
CHGA
STEP-DOWN
CHARGER
OUTPUT
INPUT
OUTPUT
3.3V DC-DC
CONVERTER
INPUT
SYSTEM LOAD
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX1773EUP-T Related Products

MAX1773EUP-T MAX1773AEUP-T
Description Power Supply Support Circuit, Fixed, 3 Channel, BICMOS, PDSO20, 4.40 MM, TSSOP-20 Power Supply Support Circuit, Fixed, 3 Channel, BICMOS, PDSO20, 4.40 MM, TSSOP-20
Is it lead-free? Contains lead Contains lead
Is it Rohs certified? incompatible incompatible
Maker Maxim Maxim
Parts packaging code TSSOP TSSOP
package instruction 4.40 MM, TSSOP-20 4.40 MM, TSSOP-20
Contacts 20 20
Reach Compliance Code _compli not_compliant
ECCN code EAR99 EAR99
Other features IT CAN ALSO OPERATE FROM 4.75V 19V BATTERY SUPPLY IT CAN ALSO OPERATE FROM 4.75V 19V BATTERY SUPPLY
Adjustable threshold NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G20 R-PDSO-G20
JESD-609 code e0 e0
length 6.5 mm 6.5 mm
Humidity sensitivity level 1 1
Number of channels 3 3
Number of functions 1 1
Number of terminals 20 20
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSSOP TSSOP
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 245 240
Certification status Not Qualified Not Qualified
Maximum seat height 1.1 mm 1.1 mm
Maximum supply voltage (Vsup) 28 V 28 V
Minimum supply voltage (Vsup) 4.75 V 4.75 V
Nominal supply voltage (Vsup) 28 V 28 V
surface mount YES YES
technology BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form GULL WING GULL WING
Terminal pitch 0.65 mm 0.65 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED 20
width 4.4 mm 4.4 mm
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