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MAX689CSA

Description
LDO Voltage Regulators High-Accuracy LDO
CategoryPower/power management    The power supply circuit   
File Size101KB,12 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX689CSA Overview

LDO Voltage Regulators High-Accuracy LDO

MAX689CSA Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instruction0.150 INCH, SO-8
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Factory Lead Time1 week
Maximum input voltage11 V
Minimum input voltage2.7 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum output current 11 A
Maximum output voltage 13.1 V
Minimum output voltage 12.9 V
Nominal output voltage 13 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height1.75 mm
surface mountYES
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
Base Number Matches1
19-0329; Rev 0; 12/94
UAL
IT MAN
TION K
A
EET
EVALU
ATA SH
OWS D
FOLL
High-Accuracy, Low-Dropout
Linear Regulators
____________________________Features
o
Fixed Outputs:
3.3V (MAX687/MAX688)
3.0V (MAX689)
o
Directly Drives External PNP Transistor
o
10mA Min Base-Current Drive for >1A Output
o
Low Dropout Voltage:
100mV Dropout at 650mA Output (FZT749)
40mV Dropout at 200mA Output (FZT749)
0.8V Dropout at 4A Output
o
Power-Fail Output Monitors the Output Voltage
o
Automatic, Latched Shutdown when Output Falls Out
of Regulation (MAX687)
o
Precision Threshold Shutdown Control
(MAX688/MAX689)
o
Low Supply Current:
150µA Operating
<1µA Shutdown
o
2.7V to 11.0V Supply Range
o
8-Pin DIP/SO/µMAX Packages
o
<2mV Line Transient with 3.4V to 3.6V Input
o
Output Accuracy <±2%
_______________General Description
The MAX687/MAX688/MAX689 low-dropout linear regula-
tors operate with an input-to-output voltage differential lim-
ited only by an external PNP transistor. Outputs are fixed
at 3.3V (MAX687/MAX688) or 3.0V (MAX689). The only
external components required are a PNP pass transistor
and output, compensation, and bypass capacitors. Base
drive to the external transistor is at least 10mA, permitting
output currents to exceed 1A when using high-gain tran-
sistors (β > 100). Output current limiting is implemented
by limiting the external transistor’s base current. Output
voltage monitoring and shutdown functions are included.
The 3.3V MAX687 automatically shuts down whenever
the output voltage drops below 2.96V. An internal
power-fail comparator also monitors the output and pro-
vides an early warning of low output voltage before the
device shuts down. When shut down, the output is
latched off until the ON input is pulsed. Turning off the
power supply in this way prevents battery damage due
to excessive discharge or cell-reversal. Typical applica-
tions include portable telephones and other battery-pow-
ered equipment where the power supply must be
disabled when the battery voltage is low.
The MAX688 and MAX689 do not have an automatic
shutdown function, and are identical except for their
output voltages. Each device has an active-low shut-
down-control input, used to turn its output on or off at
any time. As SHDN falls, the device enters a standby
mode before fully shutting down. When in standby, the
reference and comparators are fully operational, per-
mitting the transition from normal mode to standby
mode to occur at a precise voltage level on SHDN.
MAX687/MAX688/MAX689
______________Ordering Information
PART
MAX687CPA
MAX687CSA
MAX687CUA
MAX687EPA
MAX687ESA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 Plastic DIP
8 SO
8 µMAX
8 Plastic DIP
8 SO
________________________Applications
High-Efficiency Linear Regulator
Battery-Powered Devices
Portable Instruments
Portable Telephones
Power Supply or Backup Supply for Memory
Ordering Information continued at end of data sheet.
__________Typical Operating Circuit
+3.5V to +5V INPUT
Q1
FZT749
R
B
12Ω
3.3V @ 500mA
__________________Pin Configuration
TOP VIEW
IN
IN 1
(ON) SHDN 2
PFO 3
GND 4
( ) ARE FOR MAX687
8
CC
BASE
BLIM
OUT
GND
C1
2.2µF
ON
ON
7
6
5
BASE
BLIM
OUT
C2
68µF
PFO
CC
GND
C3
10nF
POWER-FAIL
OUTPUT
MAX687
MAX688
MAX689
MAX687
DIP/SO/µMAX
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.

MAX689CSA Related Products

MAX689CSA MAX689CSA- MAX689CUA MAX688ESA-T MAX687CUA-T MAX688CUA MAX687ESA-T
Description LDO Voltage Regulators High-Accuracy LDO LDO Voltage Regulators High-Accuracy LDO LDO Voltage Regulators LDO Voltage Regulators LDO Voltage Regulators LDO Voltage Regulators High-Accuracy LDO LDO Voltage Regulators
Is it Rohs certified? incompatible - incompatible incompatible incompatible incompatible incompatible
Maker Maxim - - Maxim Maxim Maxim Maxim
Parts packaging code SOIC - SOIC SOIC SOIC SOIC SOIC
package instruction 0.150 INCH, SO-8 - MICRO MAX PACKAGE-8 0.150 INCH, SO-8 MICRO MAX PACKAGE-8 MICRO MAX PACKAGE-8 0.150 INCH, SO-8
Contacts 8 - 8 8 8 8 8
Reach Compliance Code not_compliant - not_compliant not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 - EAR99 EAR99 EAR99 EAR99 EAR99
Maximum input voltage 11 V - 11 V 11 V 11 V 11 V 11 V
Minimum input voltage 2.7 V - 2.7 V 2.7 V 2.7 V 2.7 V 2.7 V
JESD-30 code R-PDSO-G8 - S-PDSO-G8 R-PDSO-G8 S-PDSO-G8 S-PDSO-G8 R-PDSO-G8
JESD-609 code e0 - e0 e0 e0 e0 e0
length 4.9 mm - 3 mm 4.9 mm 3 mm 3 mm 4.9 mm
Humidity sensitivity level 1 - 1 - 1 1 -
Number of functions 1 - 1 1 1 1 1
Number of terminals 8 - 8 8 8 8 8
Maximum output current 1 1 A - 1 A 1 A 1 A 1 A 1 A
Maximum output voltage 1 3.1 V - 3.1 V 3.4 V 3.4 V 3.4 V 3.4 V
Minimum output voltage 1 2.9 V - 2.9 V 3.2 V 3.2 V 3.2 V 3.2 V
Nominal output voltage 1 3 V - 3 V 3.3 V 3.3 V 3.3 V 3.3 V
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP - TSSOP SOP TSSOP TSSOP SOP
Package shape RECTANGULAR - SQUARE RECTANGULAR SQUARE SQUARE RECTANGULAR
Package form SMALL OUTLINE - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE
Peak Reflow Temperature (Celsius) 245 - 245 245 245 245 245
Certification status Not Qualified - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Regulator type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR - FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height 1.75 mm - 1.1 mm 1.75 mm 1.1 mm 1.1 mm 1.75 mm
surface mount YES - YES YES YES YES YES
Terminal surface Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING - GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm - 0.65 mm 1.27 mm 0.65 mm 0.65 mm 1.27 mm
Terminal location DUAL - DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 3.9 mm - 3 mm 3.9 mm 3 mm 3 mm 3.9 mm
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