LTC1985ES5-1.8 Linear Technology, LTC1985ES5-1.8 Datasheet - Page 2

• Manufacturer Part Number: LTC1985ES5-1.8
• Description: Micropower Precision Triple Supply Monitor with Push-Pull Reset Output in a 5-Lead SOT-23 Package
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
(Notes 1, 2)
V
RST .......................................... – 0.3V to (V
Operating Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................ 300 C
LTC1985-1.8
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specificaitons are at T
SYMBOL
V
V
V
V
I
I
I
t
t
V
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: The LTC1985E is guaranteed to meet specified performance from
0 C to 70 C and is designed, characterized and assured to meet the
2
VCC3
VCC18
VCCA
RST
UV
RT3
RT18
RTA
CCOP
OL
OH
CC3
(Note 3) ............................................. – 40 C to 85 C
, V
CC18
PARAMETER
Reset Threshold V
Reset Threshold V
Reset Threshold V
V
V
V
V
Reset Pulse Width
V
Output Voltage Low, RST
Output Voltage High, RST
CC3
CC3
CC18
CCA
CC
, V
Undervoltage Detect to RST
, V
Supply Current
Input Current
Supply Current
CCA
CC18
W
...................................... – 0.3V to 7V
Operating Voltage
CC3
CC18
CCA
W W
CONDITIONS
V
V
V
RST in Correct Logic State
V
V
V
V
RST Low
V
Threshold V
I
I
I
I
I
SINK
SINK
SINK
SINK
SOURCE
CC3
CC18
CCA
CC18
CC18
CC18
CCA
CC18
U
Input Threshold
Input Threshold
= 1V
= 2.5mA, V
= 100 A, V
= 100 A, V
= 100 A, V
, V
CC3
Input Threshold
> V
< V
< V
A
CC3
= 200 A
= 25 C. V
CC3
CC3
CC3
+ 0.3V)
RT
or V
, V
, V
The
by More Than 1%
CC3
CC18
CCA
CC3
CC3
CC3
CC3
= 3V (Note 4)
CC3
= 1V, V
= 0V, V
= 1V, V
= 1.8V (Note 4)
Less Than Reset
= 3V, V
denotes specifications which apply over the full operating
= 3V, V
PACKAGE/ORDER I FOR ATIO
Consult factory for Industrial and Military grade parts.
extended temperature limits of – 40 C to 85 C but are not tested at these
temperatures.
Note 4: Both V
has the greatest potential.
CC18
CC18
CC18
CC18
CC18
= 0V
= 0V
= 1V
= 1V
V
GND 2
RST 1
CCA
T
JMAX
= 1.8V, V
5-LEAD PLASTIC SOT-23
3
= 125 C,
CC3
S5 PACKAGE
TOP VIEW
and V
CCA
JA
CC18
= 250 C/W
= V
can act as the supply depending on which pin
CC3
5 V
4 V
CC3
CC18
unless otherwise noted.
0.8V
2.760
1.656
0.985
MIN
– 15
140
1
CC3
U
S5 PART MARKING
2.805
1.683
1.000
LTC1985ES5-1.8
0.15
0.05
0.05
0.05
TYP
200
110
PART NUMBER
10
1
1
0
W
ORDER
LTNM
2.850
1.710
1.015
MAX
280
0.4
0.3
0.3
0.3
20
15
7
2
2
UNITS
U
ms
nA
V
V
V
V
A
A
A
V
V
V
V
V
s