ISL21440IRTZ Intersil, ISL21440IRTZ Datasheet

IC VREF W/COMPARATOR 8TDFN

ISL21440IRTZ

Manufacturer Part Number
ISL21440IRTZ
Description
IC VREF W/COMPARATOR 8TDFN
Manufacturer
Intersil
Series
FGA™r
Datasheet

Specifications of ISL21440IRTZ

Applications
Comparator, Voltage Reference
Current - Supply
460µA
Voltage - Supply
2 V ~ 11 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
*
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL21440IRTZ
Manufacturer:
INTERSIL
Quantity:
20 000
Company:
Part Number:
ISL21440IRTZ
Quantity:
85
Micropower Voltage Reference with Comparator
ISL21440
The ISL21440 is a micropower, FGA™ reference and comparator
on a single chip. Drawing less than 1.8µA supply current over the
full operating temperature range, the ISL21440 operates from
single 2V to 11V supply and can also be used with split bipolar
supplies.
The ISL21440’s on-board reference provides a 1.182V ±0.5%
output. It features programmable hysteresis and TTL/CMOS
compatible outputs that sink and source current. Low Bias
currents permit high value divider resistors for typical circuit
current drains of <2.5µA.
The low supply current makes the ISL21440 ideal for battery
powered devices in battery level or low voltage monitors circuits.
The ISL21440 is a pin-compatible, performance upgrade of both
the LTC1440, LTC1540, MAX921 and MAX931.
February 23, 2011
FN6532.2
VBAT
1.8M
2.4M
2.4M
FIGURE 1. TYPICAL APPLICATION
20k
LOW BATTERY DETECTOR
IN+
HYST
IN-
REF
1
Vdd
+
-
V-
V+
ISL21440
GND
OUT
LoBAT-
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
a
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• 1.8µA Supply Current Over Full Temperature Range
• Wide Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . 2V to 11V
• Precision 1.182V ±0.5% Voltage Reference
• Comparator with User Programmable Hysteresis
• Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to +125°C
• 8 Ld MSOP and 8 Ld TDFN Packages
• Pin Compatible Upgrade to MAX921 and LTC1440
Applications
• Low Battery Detector
• Low Voltage Reset
• Overvoltage Monitor
• Window Comparator
1.190
1.188
1.186
1.184
1.182
1.180
1.178
1.176
1.174
1.172
All other trademarks mentioned are the property of their respective owners.
-40
FIGURE 2. REFERENCE VOLTAGE vs TEMPERATURE
V+ = 5V
-20
|
Copyright Intersil Americas Inc. 2009-2011. All Rights Reserved
0
20
TEMPERATURE (°C)
V+ = 2V
40
60
V+ = 3V
80
100
120

Related parts for ISL21440IRTZ

ISL21440IRTZ Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas Inc. 2009-2011. All Rights Reserved Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners ...

Page 2

Block Diagram Pin Configuration ISL21440 (8 LD MSOP TDFN) TOP VIEW GND IN+ IN ISL21440 V+ IN+ + IN- - HYST ISL21440 REF V- GND Pin Descriptions PIN SYMBOL 1 GND 2 ...

Page 3

... Ordering Information PART NUMBER (Notes ISL21440IUZ ISL21440IRTZ NOTES: 1. Add “-T*” suffix for tape and reel. Please refer to 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb- free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 ...

Page 4

Table of Contents Absolute Maximum Ratings ...

Page 5

... Ld TDFN Package (Notes 5, 6 Maximum Junction Temperature (Plastic Package .+150°C Storage Temperature Range .-65°C to +150°C Pb-Free Reflow Profile (Note 8 see link below + 0.3V http://www.intersil.com/pbfree/Pb-FreeReflow.asp CC Recommended Operating Conditions Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V = +25°C. Boldface limits apply over the operating ...

Page 6

Analog Specifications V+= +5.0V GND = 0V unless otherwise specified, T (Continued) temperature range, -40°C to +125°C. SYMBOL PARAMETER PSRR Power Supply Rejection Ratio V Hysteresis Input Voltage HYST t Propagation Delay - High to Low Transition C ...

Page 7

Analog Specifications V+= +3.0V GND = 0V unless otherwise specified, T (Continued) temperature range, -40°C to +125°C. SYMBOL PARAMETER PSRR Power Supply Rejection Ratio V Hysteresis Input Voltage HYST t Propagation Delay - High to Low Transition C ...

Page 8

Typical Performance Curves 1.190 1.188 1.186 1.184 1.182 1.180 1.178 1.176 1.174 1.172 -40 - TEMPERATURE (°C) FIGURE TEMPERATURE REF 1.183 1.182 1.181 1.180 1.179 ...

Page 9

Typical Performance Curves (mA) LOAD FIGURE 11. COMPARATOR OUTPUT HIGH VOLTAGE vs LOAD ...

Page 10

Typical Performance Curves 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -60-55-50-45-40-35-30-25-20-15- IN+ - IN- (mV) FIGURE 17. HYSTERESIS - 0mV (V+ = 3V) 3.5 3.0 ...

Page 11

Typical Performance Curves 270 245 220 195 170 3V 145 120 INPUT VOLTAGE (mV) FIGURE 23. OUTPUT RESPONSE TIME vs INPUT OVERDRIVE (t ) PLH FIGURE 25. POWER-UP/DOWN ...

Page 12

If an assembled board needs to be X-rayed, care should be taken to shield the FGA reference device. Hysteresis The Hysteresis function allows for changing the value of the reference switchover point depending on ...

Page 13

ISL21440 BAT DD V BAT V+ R1 IN+ + OUT IN- - HYST R2 ISL21440 REF V- GND + - ISL28197 R3 FIGURE 27. WINDOW COMPARATOR CIRCUIT LOW V WINDOW FN6532.2 ...

Page 14

... Changed conditions for “V Changed conditions for “V 3/31/10 In “Window Comparator” on page 12, changed "with a micropower to.." to: "with a micropower comparator to.." Page 14, replaced POD M8.118 with newest revision. Updated to new intersil format by adding land pattern and moving dimensions from table onto drawing 3/2/10 FN6532.1 Updated datasheet with the TDFN spec ...

Page 15

Package Outline Drawing M8.118 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE Rev 3, 3/10 3.0±0. PIN TOP VIEW H 0.25 - 0.036 0. SIDE VIEW 1 (5.80) (4.40) (3.00) ...

Page 16

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...

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