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LTC2919IMS-3.3#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC2919
1
2919f
SEL Pin Connection for Input Polarity
Combinations
POLARITY
ADJ1 ADJ2 SEL PIN
++
V
CC
+–
OPEN
––
GND
Precision Triple/Dual Input
UV, OV and Negative
Voltage Monitor
■
Desktop and Notebook Computers
■
Network Servers
■
Core, I/O Monitor
■
Automotive
■
Two Low Voltage Adjustable Inputs (0.5V)
■
Accurate UVLO Provides a Third Monitor Input
■
Open-Drain RST, OUT1 and OUT2 Outputs
■
Pin Selectable Input Polarity Allows Negative, UV
and OV Monitoring
■
Guaranteed Threshold Accuracy: ±1.5%
■
6.5V Shunt Regulator for High Voltage Operation
■
Low 50μA Quiescent Current
■
Buffered 1V Reference for Negative Supply Offset
■
Input Glitch Rejection
■
Adjustable Reset Timeout Period
■
Selectable Internal Timeout Saves Components
■
Outputs Guaranteed Low With V
CC
= 0.5V
■
Space Saving 10-Lead 3mm × 2mm DFN and MSOP
Packages
3.3V UV/OV (Window) Monitor Application with
200ms Internal Timeout (3.3V Logic Out)
V
CC
LTC2919–2.5
ADJ1
ADJ2
REF OUT2
SEL
OUT1
RST
10k
UV
OV
10k
10k
2919 TA01a
453k
3.3V
10.7k
76.8k
0.1µF
TMR
GND
FAULT
The LTC
®
2919 is a triple/dual input monitor intended for a
variety of system monitoring applications. Polarity selec-
tion and a buffered reference output allow the LTC2919 to
monitor positive and negative supplies for undervoltage
(UV) and overvoltage (OV) conditions.
The two adjustable inputs have a nominal 0.5V threshold,
featuring tight 1.5% threshold accuracy over the entire
operating temperature range. Glitch fi ltering ensures out-
puts operate reliably without false triggering. An accurate
threshold at the V
CC
pin provides a third input supply
monitor for a 2.5V, 3.3V or 5V supply.
Two independent output pins indicate the status of each
adjustable input. A third common output provides a
confi gurable reset timeout that may be set by an accu-
rate internal 200ms timer, programmed with an external
capacitor, or disabled for a fast response. A three-state
input pin sets the input polarity of each adjustable input
without requiring any external components.
The LTC2919 provides a highly versatile, precise, space-
conscious, micropower solution for supply monitoring.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 6949965, 7292076.
LTC2919
2
2919f
Terminal Voltages
V
CC
(Note 3) ............................................. –0.3V to 6V
OUT1, OUT2, RST ................................. –0.3V to 7.5V
ADJ1, ADJ2 .......................................... –0.3V to 7.5V
TMR, SEL ..................................–0.3V to (V
CC
+ 0.3V)
Terminal Currents
I
CC
(Note 3) ......................................................±10mA
I
REF
....................................................................±1mA
(Notes 1, 2)
ABSOLUTE AXI U RATI GS
W
WW
U
Operating Temperature Range
LTC2919C ................................................ 0°C to 70°C
LTC2919I..............................................– 40°C to 85°C
LTC2919H .......................................... –40°C to 125°C
Maximum Junction Temperature........................... 150°C
Storage Temperature Range ...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP-10 .......................................................... 300°C
TOP VIEW
11
DDB PACKAGE
10-LEAD (3mm × 2mm) PLASTIC DFN
SEL
V
CC
OUT1
OUT2
RST
ADJ1
ADJ2
TMR
REF
GND
6
8
7
9
10
5
4
2
3
1
T
JMAX
= 150°C, θ
JA
= 76°C/W
EXPOSED PAD (PIN 11) MAY BE LEFT OPEN OR TIED TO GND
1
2
3
4
5
SEL
V
CC
OUT1
OUT2
RST
10
9
8
7
6
ADJ1
ADJ2
TMR
REF
GND
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 120°C/W
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2919CDDB-2.5#PBF LTC2919CDDB-2.5#TRPBF LDGT 10-Lead (3mm × 2mm) Plastic DFN 0°C to 70°C
LTC2919IDDB-2.5#PBF LTC2919IDDB-2.5#TRPBF LDGT 10-Lead (3mm × 2mm) Plastic DFN –40°C to 85°C
LTC2919HDDB-2.5#PBF LTC2919HDDB-2.5#TRPBF LDGT 10-Lead (3mm × 2mm) Plastic DFN –40°C to 125°C
LTC2919CDDB-3.3#PBF LTC2919CDDB-3.3#TRPBF LDMW 10-Lead (3mm × 2mm) Plastic DFN 0°C to 70°C
LTC2919IDDB-3.3#PBF LTC2919IDDB-3.3#TRPBF LDMW 10-Lead (3mm × 2mm) Plastic DFN –40°C to 85°C
LTC2919HDDB-3.3#PBF LTC2919HDDB-3.3#TRPBF LDMW 10-Lead (3mm × 2mm) Plastic DFN –40°C to 125°C
LTC2919CDDB-5#PBF LTC2919CDDB-5#TRPBF LDMX 10-Lead (3mm × 2mm) Plastic DFN 0°C to 70°C
LTC2919IDDB-5#PBF LTC2919IDDB-5#TRPBF LDMX 10-Lead (3mm × 2mm) Plastic DFN –40°C to 85°C
LTC2919HDDB-5#PBF LTC2919HDDB-5#TRPBF LDMX 10-Lead (3mm × 2mm) Plastic DFN –40°C to 125°C
LTC2919CMS-2.5#PBF LTC2919CMS-2.5#TRPBF LTDGS 10-Lead Plastic MSOP 0°C to 70°C
LTC2919IMS-2.5#PBF LTC2919IMS-2.5#TRPBF LTDGS 10-Lead Plastic MSOP –40°C to 85°C
LTC2919HMS-2.5#PBF LTC2919HMS-2.5#TRPBF LTDGS 10-Lead Plastic MSOP –40°C to 125°C
LTC2919CMS-3.3#PBF LTC2919CMS-3.3#TRPBF LTDMT 10-Lead Plastic MSOP 0°C to 70°C
LTC2919IMS-3.3#PBF LTC2919IMS-3.3#TRPBF LTDMT 10-Lead Plastic MSOP –40°C to 85°C
LTC2919HMS-3.3#PBF LTC2919HMS-3.3#TRPBF LTDMT 10-Lead Plastic MSOP –40°C to 125°C
LTC2919CMS-5#PBF LTC2919CMS-5#TRPBF LTDMV 10-Lead Plastic MSOP 0°C to 70°C
LTC2919IMS-5#PBF LTC2919IMS-5#TRPBF LTDMV 10-Lead Plastic MSOP –40°C to 85°C
LTC2919HMS-5#PBF LTC2919HMS-5#TRPBF LTDMV 10-Lead Plastic MSOP –40°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *Temperature grades are identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
PIN CONFIGURATION
ORDER INFORMATION
LTC2919
3
2919f
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 2.5V (LTC2919-2.5), V
CC
= 3.3V (LTC2919-3.3), V
CC
= 5V
(LTC2919-5), ADJ1 = ADJ2 = 0.55V, SEL = fl oating, unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC(MIN)
Operating Supply Voltage RST, OUT1, OUT2 in Correct State
●
0.5 V
V
CC(SHUNT)
V
CC
Shunt Regulation Voltage I
CC
= 1mA, I
REF
= 0
●
6.0 6.5 7.1 V
I
CC
V
CC
Input Current 2.175V < V
CC
< 6V (C-Grade, I-Grade)
2.175V < V
CC
< 6V (H-Grade)
●
●
50
50
220
280
µA
µA
V
RT
ADJ Input Threshold
●
495.0
492.5
500
500
505.0
507.5
mV
mV
ΔV
RT
ADJ Hysteresis (Note 4) TMR = V
CC
1.5 3.5 10.0 mV
I
ADJ
ADJ Input Current V
ADJ
= 0.55V (C-Grade, I-Grade)
V
ADJ
= 0.55V (H-Grade)
●
●
0
0
±15
±40
nA
nA
V
CC(UVLO)
V
CC
–10% UVLO Threshold LTC2919-2.5
LTC2919-3.3
LTC2919-5
●
●
●
2.175
2.871
4.350
2.213
2.921
4.425
2.250
2.970
4.500
V
V
V
ΔV
CC(UVLO)
UVLO Hysteresis (Note 4) TMR = V
CC
0.3 0.7 2.0 %
V
REF
Buffered Reference Voltage V
CC
> 2.175V, I
REF
= ±1mA
●
0.990
0.985
1.000
1.000
1.010
1.015
V
V
I
TMR(UP)
TMR Pull-Up Current V
TMR
= 1V
●
–1.5 –2.2 –2.9 µA
I
TMR(DOWN)
TMR Pull-Down Current V
TMR
= 1V
●
1.5 2.2 2.9 µA
t
RST(EXT)
Reset Timeout Period, External C
TMR
= 2.2nF
●
15 20 27 ms
t
RST(INT)
Reset Timeout Period, Internal V
TMR
= 0V
●
140 200 280 ms
V
TMR(DIS)
Timer Disable Voltage V
TMR
Rising
●
V
CC
– 0.40
V
CC
– 0.20
V
CC
– 0.10
V
ΔV
TMR(DIS)
Timer Disable Hysteresis V
TMR
Falling
●
40 100 160 mV
V
TMR(INT)
Timer Internal Mode Voltage V
TMR
Falling
●
0.10 0.20 0.40 V
ΔV
TMR(INT)
Timer Internal Mode Hysteresis V
TMR
Rising
●
40 100 160 mV
t
PROP
ADJx Comparator Propagation Delay to
OUT
X
ADJx Driven Beyond Threshold (V
RTX
) by
5mV
●
50 150 800 µs
t
UV
V
CC
Undervoltage Detect to RST V
CC
Less Than UVLO Threshold
(V
CC(UVLO)
) by 1%
●
50 150 800 µs
V
OL
Output Voltage Low V
CC
= 0.5V, I = 5µA
V
CC
= 1V, I = 100µA
V
CC
= 3V, I = 2500µA
●
●
●
0
0
0
0.01
0.01
0.10
0.15
0.15
0.30
V
V
V
I
OH
Output Voltage High Leakage Output = V
CC
(C-Grade, I-Grade)
Output = V
CC
(H-Grade)
●
●
0
0
±1
±5
µA
µA
Three-State Input SEL
V
IL
Low Level Input Voltage
●
0 0.4 V
V
IH
High Level Input Voltage
●
1.4 V
CC
V
V
Z
Pin Voltage when Left in Open State I
SEL
= 0µA 0.8 0.9 1.0 V
ELECTRICAL CHARACTERISTICS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC2919IMS-3.3#TRPBF

Mfr. #:
Buy LTC2919IMS-3.3#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Dual Supply Monitor with Selectable Polarity, Independent Monitor Outputs
Lifecycle:
New from this manufacturer.
Delivery:
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