CAT808
Low-Power Precision Voltage Detector
FEATURES
Ultra Low Current Consumption 2.4 µA Accurate Voltage Detection Threshold Fine Voltage Detection Threshold Resolution Open Drain Output (Active Low) Industrial temperature range -40°C to +85°C 5-pin TSOT-23 RoHS compliant package
DESCRIPTION
The CAT808 is a high-precision voltage detector designed for monitoring single cell and multi-cell batteries. Voltage detection thresholds between 2.0 V and 3.5 V are provided with 0.1 V resolution and ±3.0% accuracy. The CAT808 open-drain output is active low until the VDD v oltage exceeds the detection threshold. A low hysteresis is built into the device to minimize output “chatter”, while VDD passes through the detection threshold, and the output transitions high. After the CAT808 asserts the output high condition, it continues to monitor VDD until it drops below the detection threshold, when the output goes low until VDD once again exceeds the detection threshold.
APPLICATIONS
Battery-Powered Systems Power Supply Monitoring Handheld and Portable Equipment Processor Supervisor Reset
For Ordering Information details, see page 6.
PIN CONFIGURATION
Thin SOT-23 5-Lead
OUT 1 VDD 2 GND 3 4 NC 5 NC
TYPICAL APPLICATION
IN VDD Battery Voltage CAT808 OUT GND 10kΩ DC-DC CONVERTER SHDN GND OUT
Note: The value of the pull-up resistor is not critical
© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
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Doc. No. MD-3024 Rev. F
CAT808 ABSOLUTE MAXIMUM RATINGS
Parameters Temperature under Bias Storage Temperature Voltage on any Pin with Respect to GND VDD with Respect to GND Lead Soldering temperature (10 seconds) Power Dissipation
(2)(3)
( 1)
Ratings -55 to +125 -65 to +150 -2.0 to VDD + 2.0 -2.0 to 7.0 +300 250
Units ºC ºC V V ºC mW
RECOMMENDED OPERATING CONDITIONS
Parameters VDD Operating Temperature Range Ratings +1.2 to +6.0 -40 to +85 Units V ºC
DC ELECTRICAL CHARACTERISTICS
TA = -40ºC to +85ºC, VDD = 1.2V to 6.0V Symbol Parameter Conditions CAT808Nxxx-25 VDET Detection Voltage CAT808Nxxx-27 CAT808Nxxx-32 CAT808Nxxx-35 VDD = 4.0 V IDD Current Consumption VDD = 5.0 V VDD = 6.0 V IOUT ILEAK TPHL/LH ΔVDET ΔTA ● VDET(typ) Output Sink Current Output Leakage Current Response Time Detection Voltage (4) Temperature Coefficient VDD=1.2 V VDD=2.4 V VDS = 5.0 V, VDD = 5.0 V VDS = 0.5 V – Min T yp. Max 2.43 2.62 3.12 3.42 0.6 2.9 2.5 2.7 3.2 3.5 2.4 3.5 5 1.4 5 2.57 2.78 3.28 3.58 5 7 10 1 60 mA µA µs µA V Units
±10 ±100 ppm/ºC
Notes: (1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the devices at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. (2) (3) (4) The Minimum DC input voltage is -0.5 V. During transitions, inputs may undershoot to -2.0 V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5 V, which may overshoot to VCC +2.0 V for periods of less than 20 ns. Latch-up protection is provided for stresses up to 100 mA on all pins from -1 V to VCC +1 V. The temperature change ratio in the detection voltage [ppm/°C] is calculated by using the following equation:
ΔVDET × 1,000,000[ppm /º C] ΔTA • VDET (typ)
Doc. No. MD-3024 Rev. F
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© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT808 OPERATION – VOLTAGE DETECTOR
The CAT808 has an active low output that asserts (pulls low) when the supply voltage drops below the detection threshold voltage (VDET). The open-drain output requires an external pull-up resistor between the output pin and the supply voltage (as shown in the typical application diagram). On power-up, ¯¯¯¯ is OUT held active low until the supply voltage (VDD) rises above VDET. While VDD is above VDET, ¯¯¯¯ stays high OUT until VDD drops below VDET, then ¯¯¯¯ once again OUT goes low.
BLOCK DIAGRAM
VDD OUT
VOLTAGE REFERENCE
TIMING DIAGRAM
VDD* VDET(MAX) VDET VDET(MIN) GND TPLH VOH TPHL VDET(MAX) VDET VDET(MIN)
OUT Slews with VDD OUT
* V oltage of VDD below 1 volt will not be able to maintain low output.
PIN FUNCTIONS
Pin VDD GND ¯¯¯¯ OUT NC Function Voltage Input and Power Supply Ground Pin Active Low Open Drain output No Connect, the pin is electrically open
© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
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Doc. No. MD-3024 Rev. F
CAT808 TYPICAL ELECTRICAL OPERATING CHARACTERISTICS
Typical values at TA = 25°C. VDD Supply Current vs. VDD Supply Voltage
5
VDET Detection Voltage vs. Temperature
2.71
Supply Current (μA)
4 2.705
2
VDET (V)
2.7 2 3 4 5 6 2.695 -40 -5 30 65 100
3
1
0
Supply Voltage (V)
Temperature (ºC)
Response time vs. Load Capacitance
100
IOUT T ransistor Output Current vs. VDD Supply Voltage
10.00
-40ºC
Response time [ms]
10
TPLH
(mA)
8.00
+25ºC
6.00 4.00
+90ºC
1
0.1
IOUT
TPHL
0.01 0.001 0.01 0.000001 0.00001
0.1 0.0001 1 0.001 10 0.01 100 0.1
2.00
0.00 1.00
1.50
2.00
2.50
Load capacitance [nF]
VDD (V)
Doc. No. MD-3024 Rev. F
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© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT808 PACKAGE OUTLINE DRAWINGS
TSOT-23 5-Lead (TD)
(1) (2)
D e
SYMBOL A A1 A2 b c D
E1 E
MIN 0.01 0.80 0.30 0.12
NOM 0.05 0.87 0.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 TYP
MAX 1.00 0.10 0.90 0.45 0.20
E E1 e L L1 L2 θ 0º 0.30
0.40 0.60 REF 0.25 BSC
0.50
8º
TOP VIEW
A2 A
θ
b
A1 L1
L
c
L2
SIDE VIEW
END VIEW
Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC specification MO-193.
© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
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Doc. No. MD-3024 Rev. F
CAT808 EXAMPLE OF ORDERING INFORMATION
Prefix Device # Suffix
CAT
808N
TD
I
-27
Optional Company ID
Product Number 808N
Temperature Range I = Industrial (-40°C to 85°C)
Lead Finish G: NiPdAu Tape & Reel T: Tape & Reel 3: 3000 Reel
Package TD: TSOT-23-5
Voltage Detection Level -25: 2.5V
-35: 3.5V
Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard finish is NiPdAu. (3) The device used in the above example is a CAT808NTDI-27GT3 (TSOT-23-5, Industrial Temperature, 2.7 V Detection Level, NiPdAu, Tape & Reel, 3000 Reel). (4) For additional detection voltage, package and temperature options, please contact your nearest ON Semiconductor Sales office.
ORDERING INFORMATION
Orderable Part Number CAT808NTDI-25GT3 CAT808NTDI-27GT3 CAT808NTDI-32GT3 CAT808NTDI-35GT3 Package TSOT-23-5 TSOT-23-5 TSOT-23-5 TSOT-23-5 Detection Voltage [V] 2.50 2.70 3.20 3.50 Top Marking MVym MVym MVym MVym * there are two
* Part number is not exactly the same as the “Example of Ordering Information” shown above. For part numbers marked with hyphens in the orderable part number. Notes: (1) ym – Year and Month Code.
Doc. No. MD-3024 Rev. F
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© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
CAT808 REVISION HISTORY
Date 7-Nov-06 Rev. A Description Initial Issue Update Features Update Description Update DC Electrical Characteristics Update Example of Ordering Information Update Top Marking Added MD– to document number Change logo and fine print to ON Semiconductor Update Package Outline Drawing - SOT-89 3-Lead (TF) Update Ordering Information table Update DC Electrical Characteristics Remove SOT-89 Package Update Example of Ordering Information Update Ordering Information
10-May-07
B
5-Nov-08 17-Mar-09 13-Jul-09
C D E
17-May-10
F
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center: Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
© 2010 SCILLC. All rights reserved. Characteristics subject to change without notice
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Doc. No. MD-3024 Rev. F
