Datasheet

LTC1727/LTC1728
2
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absoluTe MaxiMuM raTings
V
CC3
, V
CC5
/V
CC25
/V
CC18
, V
CCA ........................
–0.3V to 7V
RST ............................................................. – 0.3V to 7V
COMPA, COMP3, COMP25/COMP5
(MS8 and SO-8 Only) ............................. –0.3V to 7V
(Notes 1. 2)
1
2
3
4
V
CC3
V
CC5
/V
CC25
V
CCA
GND
8
7
6
5
COMP3
COMP25/COMP5
RST
COMPA
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 200°C/W
1
2
3
4
8
7
6
5
TOP VIEW
COMP3
RST
COMPA
V
CC3
V
CCA
GND
S8 PACKAGE
8-LEAD PLASTIC SO
COMP25/
COMP5
V
CC5
/
V
CC25
T
JMAX
= 125°C, θ
JA
= 150°C/W
RST 1
GND 2
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC SOT-23
V
CCA
3
5 V
CC3
4
V
CC5
/
V
CC25
/
V
CC18
T
JMAX
= 125°C, θ
JA
= 250°C/W
ORDER
PART NUMBER
MS8
PART MARKING
ORDER
PART NUMBER
S8
PART MARKING
ORDER
PART NUMBER
S5
PART MARKING
LTC1727EMS8-2.5
LTC1727EMS8-5
LTHY
LTHX
LTC1727ES8-2.5
LTC1727IS8-2.5
LTC1727ES8-5
LTC1727IS8-5
172725
727I25
17275
172715
LTC1728ES5-1.8
LTC1728ES5-2.5
LTC1728ES5-3.3
LTC1728ES5-5
LTC1728HS5-5
LTPH
LTIA
LTY P
LTHZ
LTHZ
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
pin conFiguraTion
elecTrical cHaracTerisTics
Operating Temperature Range
LTC1727/LTC1728E (Note 3) ............... – 40°C to 85°C
LTC1728H ..........................................– 40°C to 125°C
LTC1727I..............................................– 40°C to 85°C
Storage Temperature Range .................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RT3
Reset Threshold V
CC3
V
CC3
Input Threshold
l
3.036 3.086 3.135 V
V
RT5
Reset Threshold V
CC5
V
CC5
Input Threshold (5V Version)
l
4.600 4.675 4.750 V
V
RT25
Reset Threshold V
CC25
V
CC25
Input Threshold (2.5V Version)
l
2.300 2.338 2.375 V
V
RTA
Reset Threshold V
CCA
V
CCA
Input Threshold
l
0.985 1.000 1.015 V
V
CCOP
V
CC3
, V
CC5
/V
CC25
Operating Voltage RST, COMP3, COMP5, COMP25 in Correct Logic State
l
1 7 V
V
CCOPA
V
CC3
, V
CC5
/V
CC25
Operating Voltage Minimum Supply Voltage to Guarantee COMPA
in Correct Logic State
l
2 2.3 V
All except LTC1728-1.8/LTC1728-3.3. The l denotes specifications which
apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. V
CC3
= 3.3V, V
CC5
= 5V,
V
CC25
= 2.5V, V
CCA
= V
CC3
unless otherwise noted.