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LTC2932HF#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC2932
1
2932fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Confi gurable Six Supply
Monitor with Adjustable Reset
Timer and Supply Tolerance
The LTC
®
2932 is a confi gurable supply monitor for sys-
tems with up to six supply voltages. One of 16 preset or
adjustable voltage monitor combinations can be selected
using an external resistive divider connected to the mode
select pin. The preset voltage thresholds are digitally
confi gurable to 5%, 7.5%, 10%, or 12.5% below the
nominal operating voltage. The LTC2932 also features
adjustable inputs with a 0.5V nominal threshold. All six
open-drain voltage comparator outputs are connected to
separate pins for individual supply monitoring.
The reset timeout period is adjustable using an external
capacitor. The RST output is guaranteed to be in the
correct state for V
CC
down to 1V and may be disabled
during supply margin testing. Each status output has a
weak internal pull-up and may be externally pulled up to
an external voltage.
The 52μA supply current makes the LTC2932 ideal for
power conscious systems and the part may be confi gured
to monitor less than six inputs.
Six Supply Monitor 12V (ADJ),
5V, 3.3V, 2.5V, 1.8V, 1.2V (ADJ)
■
Simultaneously Monitors Six Supplies
■
16 User Selectable Combinations of
5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and
± Adjustable Voltage Thresholds
■
Guaranteed Threshold Accuracy: ±1.5%
■
Selectable Supply Tolerances: 5%, 7.5%, 10%,
12.5% Below Monitored Voltage
■
Reset Disable Pin for Margining Applications
■
Low Supply Current: 52μA
■
Power Supply Glitch Immunity
■
Guaranteed RST for V
CC
≥ 1V
■
High Temperature Operation to 125°C
■
20-Lead TSSOP Package
■
Desktop and Notebook Computers
■
Multivoltage Systems
■
Telecom Equipment
■
Portable Battery-Powered Equipment
■
Network Servers
■
Automotive
COMP1
COMP2
COMP3
COMP4
COMP5
COMP6
LTC2932
1.2V
1.8V
2.5V
3.3V
5V
12V
2932 TA01
t
RST
= 94ms
C
RT
47nF
RST
RDIS
VPG
GND
T0 T1 CRT
V1
V2
V3
V4
V5
V6
VREF
SYSTEM
LOGIC
POWER
GOOD
R1
59k
1%
100k
1%
100k
1%
124k
1%
2150k
1%
R2
40.2k
1%
0.1μF
0.1μF
10k
Voltage Threshold Confi guration Table
V1 (V) V2 (V) V3 (V) V4 (V) V5 (V) V6 (V)
5 3.3 2.5 1.8 ADJ ADJ
5 3.3 2.5 1.5 ADJ ADJ
5 3.3 2.5 ADJ ADJ ADJ
5 3.3 1.8 ADJ ADJ ADJ
5 3.3 1.8 –ADJ ADJ ADJ
5 3.3 ADJ ADJ ADJ ADJ
5 3.3 ADJ –ADJ ADJ ADJ
5 3 2.5 ADJ ADJ ADJ
5 3 1.8 ADJ ADJ ADJ
5 3 ADJ ADJ ADJ ADJ
3.3 2.5 1.8 1.5 ADJ ADJ
3.3 2.5 1.8 ADJ ADJ ADJ
3.3 2.5 1.8 –ADJ ADJ ADJ
3.3 2.5 1.5 ADJ ADJ ADJ
3.3 2.5 ADJ ADJ ADJ ADJ
3.3 2.5 ADJ –ADJ ADJ ADJ
L, 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 6967591, 7119714, 7239251.
LTC2932
2
2932fb
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V1, V2, V3, V4, V5, V6, VPG ........................ –0.3V to 7V
RST, COMP1-6, T0, T1.................................–0.3V to 7V
CRT, VREF, RDIS ............................–0.3V to (V
CC
+ 0.3V)
Reference Load Current (I
VREF
) .............................. ±1mA
V4 Input Current (–ADJ Mode) ..............................–1mA
RST, COMP1-6 Currents ......................................±10mA
Operating Temperature Range
LTC2932C ................................................ 0°C to 70°C
LTC2932I..............................................–40°C to 85°C
LTC2932H ..........................................–40°C to 125°C
Storage Temperature Range ...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Notes 1, 2, 3)
F PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
COMP5
V5
COMP3
COMP1
V3
V1
CRT
RST
T0
RDIS
COMP6
V6
COMP2
COMP4
V2
V4
VREF
VPG
GND
T1
T
JMAX
= 130°C, θ
JA
= 90°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2932F#PBF LTC2932CF#TRPBF LTC2932F 20-Lead Plastic TSSOP 0°C to 70°C
LTC2932F#PBF LTC2932IF#TRPBF LTC2932F 20-Lead Plastic TSSOP –40°C to 85°C
LTC2932F#PBF LTC2932HF#TRPBF LTC2932F 20-Lead Plastic TSSOP –40°C to 125°C
Consult LTC Marketing for information on non-standard lead based fi nish parts. *Temperature grades are identifi ed by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Minimum Internal Operating Voltage RST, COMP
n
in Correct Logic State
●
1V
V
CCMINP
Minimum Required for Mode Selection V
CC
Rising
●
2.4 V
V
CCMINC
Minimum Required for Comparators V
CC
Falling
●
2.3 V
V
RT50
5V, 5% Reset Threshold
5V, 7.5% Reset Threshold
5V, 10% Reset Threshold
5V, 12.5% Reset Threshold
V1 Input Threshold
●
●
●
●
4.600
4.475
4.350
4.225
4.675
4.550
4.425
4.300
4.750
4.625
4.500
4.375
V
V
V
V
V
RT33
3.3V, 5% Reset Threshold
3.3V, 7.5% Reset Threshold
3.3V, 10% Reset Threshold
3.3V, 12.5% Reset Threshold
V1, V2 Input Threshold
●
●
●
●
3.036
2.954
2.871
2.789
3.086
3.003
2.921
2.838
3.135
3.053
2.970
2.888
V
V
V
V
V
RT30
3V, 5% Reset Threshold
3V, 7.5% Reset Threshold
3V, 10% Reset Threshold
3V, 12.5% Reset Threshold
V2 Input Threshold
●
●
●
●
2.760
2.685
2.610
2.535
2.805
2.730
2.655
2.580
2.850
2.775
2.700
2.625
V
V
V
V
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, unless otherwise specifi ed. (Note 3)
LTC2932
3
2932fb
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RT25
2.5V, 5% Reset Threshold
2.5V, 7.5% Reset Threshold
2.5V, 10% Reset Threshold
2.5V, 12.5% Reset Threshold
V2, V3 Input Threshold
●
●
●
●
2.300
2.238
2.175
2.113
2.338
2.275
2.213
2.150
2.375
2.313
2.250
2.188
V
V
V
V
V
RT18
1.8V, 5% Reset Threshold
1.8V, 7.5% Reset Threshold
1.8V, 10% Reset Threshold
1.8V, 12.5% Reset Threshold
V3, V4 Input Threshold
●
●
●
●
1.656
1.611
1.566
1.521
1.683
1.638
1.593
1.548
1.710
1.665
1.620
1.575
V
V
V
V
V
RT15
1.5V, 5% Reset Threshold
1.5V, 7.5% Reset Threshold
1.5V, 10% Reset Threshold
1.5V, 12.5% Reset Threshold
V3, V4 Input Threshold
●
●
●
●
1.380
1.343
1.305
1.268
1.403
1.365
1.328
1.290
1.425
1.388
1.350
1.313
V
V
V
V
V
RTA
ADJ, 5% Reset Threshold
ADJ, 7.5% Reset Threshold
ADJ, 10% Reset Threshold
ADJ, 12.5% Reset Threshold
V3, V4, V5, V6 Input Threshold
●
●
●
●
492.5
479.4
466.3
453.1
500.0
486.6
473.3
459.9
507.5
494
480.4
466.8
mV
mV
mV
mV
V
RTAN
–ADJ Reset Threshold V4 Input Threshold
●
–18 0 18 mV
V
REF
Reference Voltage V
CC
≥ 2.3V, I
VREF
= ±1mA, C
REF
≤ 1000pF
T0 Low, T1 Low
T0 Low, T1 High
T0 High, T1 Low
T0 High, T1 High
●
●
●
●
1.192
1.160
1.128
1.096
1.210
1.178
1.146
1.113
1.228
1.195
1.163
1.130
V
V
V
V
V
PG
Mode Selection Voltage Range V
CC
≥ V
CCMINP
●
0V
REF
V
I
VPG
VPG Input Current V
PG
= V
REF
●
±20 nA
I
V1
V1 Input Current V1 = 5V, I
VREF
= 12μA (Note 4)
●
52 75 μA
I
V2
V2 Input Current V2 = 3.3V
●
0.8 2 μA
I
V3
V3 Input Current V3 = 2.5V
V3 = 0.55V (ADJ Mode)
●
●
0.52 1.2
±15
μA
nA
I
V4
V4 Input Current V4 = 1.8V
V4 = 0.55V (ADJ Mode)
V4 = –0.02V (–ADJ Mode)
●
●
●
0.34 0.8
±15
±15
μA
nA
nA
I
V5
, I
V6
V5, V6 Input Current V5, V6 = 0.55V
●
±15 nA
I
CRT(UP)
CRT Pull-Up Current V
CRT
= GND
●
–1.4 –2 –2.6 μA
I
CRT(DN)
CRT Pull-Down Current V
CRT
= 1.3V
●
10 20 30 μA
I
COMPn
COMP
n
Pull-Up Current V
COMPn
= GND
●
–2 –6 –12 μA
t
RST
Reset Timeout Period C
RT
= 1500pF
●
234 ms
t
UV
V
n
Undervoltage Detect to RST or
COMP
n
V
n
Less Than Reset Threshold by More
than 1%
150 μs
V
OL
Voltage Output Low RST, COMP
n
I
SINK
= 3mA, V
CC
= 3V
I
SINK
= 100μA, V
CC
= 1V
●
●
0.15
0.05
0.4
0.3
V
V
V
OH
Voltage Output High RST, COMP
n
(Note 5)
I
SOURCE
= –1μA
●
V2-1 V
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, unless otherwise specifi ed. (Note 3)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC2932HF#TRPBF

Mfr. #:
Buy LTC2932HF#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Configurable Six-Input Supply Monitor w/ Adjustable Tolerance
Lifecycle:
New from this manufacturer.
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