LTC2906CTS8 Linear Technology, LTC2906CTS8 Datasheet

no-image

LTC2906CTS8

Manufacturer Part Number
LTC2906CTS8
Description
Manufacturer
Linear Technology
Datasheet

Specifications of LTC2906CTS8

Voltage Supervisor Type
Voltage Monitor
Number Of Voltage Supervisors
2
Monitored Supervisor Voltage
5/3.3/2.5/Adj
Package Type
TSOT-23
Operating Temperature Classification
Commercial
Operating Temp Range
0C to 70C
Pin Count
8
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC2906CTS8
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC2906CTS8#TRMPBF
Manufacturer:
LT
Quantity:
1 000
Part Number:
LTC2906CTS8#TRMPBF
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
, LTC and LT are registered trademarks of Linear Technology Corporation.
TOLERANCE = 10%
Monitors Two Inputs Simultaneously
Three Threshold Selections for 5V, 3.3V or 2.5V
Supplies
Low Voltage Adjustable Input (0.5V)
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy: 1.5% of
Monitored Voltage Over Temperature
Internal V
Power Supply Glitch Immunity
200ms Reset Time Delay (LTC2906 Only)
Adjustable Reset Time Delay (LTC2907 Only)
Open Drain RST Output
Guaranteed RST for V1 1V or V
Low Profile (1mm) SOT-23 (ThinSOT
Plastic (3mm 2mm) DFN Packages
Desktop and Notebook Computers
Handheld Devices
Network Servers
Core, I/O Monitor
CONVERTER
DC/DC
Dual Supply Monitor with Adjustable Tolerance (2.5V, 0.8V)
0.1 F
CC
Auto Select
U
V1
V
S1
TOL
CC
LTC2907
2.5V
0.8V
V
TMR
GND
U
RST
ADJ
CC
TM
0.1 F
1V
) and
22nF
49.9k
100k
29067 TA01
with One Pin-Selectable Threshold
SYSTEM
LOGIC
DESCRIPTIO
The LTC
tended for systems with multiple supply voltages. The
dual supply monitors have a common reset output with
delay (200ms for the LTC2906 and adjustable using an
external capacitor for the LTC2907). These products pro-
vide a precise, space-conscious and micropower solution
for supply monitoring.
The LTC2906/LTC2907 feature a tight 1.5% threshold
accuracy over the whole operating temperature range
and glitch immunity to ensure reliable reset operation
without false triggering. The open drain RST output state
is guaranteed to be in the correct state for V1 and/or V
down to 1V.
The LTC2906/LTC2907 also feature one adjustable input
with a nominal threshold level at 0.5V, another input with
three possible input threshold levels, and three supply
tolerances for possible margining. These features provide
versatility for any kind of system requiring dual supply
monitors. Two three-state input pins program the thresh-
old and tolerance level without requiring any external
components.
Precision Dual Supply Monitors
and One Adjustable Input
®
2906/LTC2907 are dual supply monitors in-
TOLERANCE
Supply Selection Programming
7.5%
10%
5%
5.0
3.3
2.5
V1
Tolerance Programming
U
LTC2906/LTC2907
OPEN
GND
OPEN
TOL
GND
V1
S1
V1
29067f
1
CC

Related parts for LTC2906CTS8

LTC2906CTS8 Summary of contents

Page 1

... Low Profile (1mm) SOT-23 (ThinSOT Plastic (3mm 2mm) DFN Packages U APPLICATIO S Desktop and Notebook Computers Handheld Devices Network Servers Core, I/O Monitor , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO Dual Supply Monitor with Adjustable Tolerance (2.5V, 0.8V) 2.5V DC/DC 0.8V CONVERTER ...

Page 2

... ADJ CONDITIONS V1 Input Threshold V1 Input Threshold V1 Input Threshold V Input Threshold ADJ V > > > > ORDER PART NUMBER LTC2906CTS8 LTC2906ITS8 LTC2907CTS8 ADJ 6 S1 LTC2907ITS8 5 TOL TS8 PART MARKING LTBCM LTBCN = 250 C/W JA LTBCP LTBCQ = 0.55V TOL = 0V, unless otherwise noted. MIN TYP MAX 4.600 4 ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T (Notes SYMBOL PARAMETER I TMR Pull-Up Current TMR(UP) I TMR Pull-Down Current TMR(DOWN) t Reset Time-Out Period RST t Reset Time-Out Period RST t V Undervoltage Detect to ...

Page 4

LTC2906/LTC2907 W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are unless otherwise noted. A ADJ Threshold Voltage vs Temperature 0.505 5% 0.500 0.495 0.490 7.5% 0.485 0.480 10% 0.475 0.470 25 50 –50 –25 0 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are unless otherwise noted. A RST Pull-Down Current (I ) RST vs V MAX S1 = TOL = 0.55V ADJ ...

Page 6

LTC2906/LTC2907 W U TYPICAL PERFOR A CE CHARACTERISTICS Specifications are unless otherwise noted CTIO S (TS8 Package/DDB8 Package) V (Pin 1/Pin 4): Optional Power Supply Pin and ...

Page 7

W BLOCK DIAGRA LTC2906 V1 V POWER DETECT ADJ BAND GAP REFERENCE LTC2907 V1 V POWER DETECT ADJ BAND GAP REFERENCE – MAX + RESISTOR NETWORK + – THREE-STATE DECODER S1 – MAX RESISTOR ...

Page 8

LTC2906/LTC2907 DIAGRA V RTX V X RST RST U U APPLICATIO S I FOR ATIO Supply Monitoring The LTC2906/LTC2907 are low power, high accuracy dual supply monitoring circuits with an adjustable input and another ...

Page 9

U U APPLICATIO S I FOR ATIO In margining application, the three-state input pins can be driven using a three-state buffer. Note however, the low and high output of the three-state buffer has to satisfy the V and V of ...

Page 10

LTC2906/LTC2907 U U APPLICATIO S I FOR ATIO Threshold Accuracy Reset threshold accuracy is of the utmost importance in a supply sensitive system. Ideally such a system should not reset while supply voltages are within a specified margin below the ...

Page 11

U U APPLICATIO S I FOR ATIO 10000 1000 100 10 1 0.1 10p 100p 1n 10n C (FARAD) TMR Figure 2. Reset Time-Out Period vs Capacitance Leaving the TMR pin open with no external capacitor generates a reset time-out ...

Page 12

LTC2906/LTC2907 U TYPICAL APPLICATIO S 3.3V 0 5V, 3.3V Supply Monitor, 5% Tolerance with LED Power Good Indicator LTC2906 499 TOL P0WER S1 V ADJ GOOD LED RST SYSTEM RST GND RESET 3.3V, 1.8V Monitor, ...

Page 13

U TYPICAL APPLICATIO S 2.5V, 1V Monitor, 10% Tolerance with LED Undervoltage Indicator and 5V High Availability Auxiliary Supply (5V Not Monitored) 2.5V 0 0.1 F (Supplies Rising), 10% Tolerance (After RST Goes Low) 3.3V R ONB V ...

Page 14

LTC2906/LTC2907 PACKAGE DESCRIPTIO 0.61 0.05 (2 SIDES) 0.675 0.05 2.50 0.05 1.15 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 2.20 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO VERSION (WECD-1) IN JEDEC PACKAGE OUTLINE ...

Page 15

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...

Page 16

... Selectable Tolerance, RESET Disable for Margining Functions, 16-Lead SSOP Package Ultralow Voltage RESET, 6-Lead SOT-23 Package Adjustable Tolerance, 8-Lead SOT-23 and 3mm 2mm DFN Packages Adjustable RESET and Tolerance, 8-Lead SOT-23 and 3mm 2mm DFN Packages LT/TP 0304 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2004 29067f ...

Related keywords