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Details, datasheet, quote on part number:LMS33460
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Datasheet text preview:
LMS33460 3V Under Voltage Detector
March 2001
LMS33460 3V Under Voltage Detector
General Description
The LMS33460 is an under voltage detector with a 3.0V threshold and extremely low power consumption. The LMS33460 is specifically designed to accurately monitor power supplies. It is especially suited to battery powered systems where low quiescent current and small size are required. This IC generates an active output whenever the input voltage drops below 3.0 Volts. This part uses a precision on-chip voltage reference and a comparator to measure the input voltage. Built in hysteresis helps to prevent erratic operation in the presence of noise. The UVD is available in the ultra-miniature SC70-5 package.
Features
n n n n n n n Ultra low Power 3.0V detection VIN Range: 0.8V to 7.0V Open drain output Ultra-small SC70-5 package Extended Temperature range (-40°C to 85°C) Ultra Low Quiescent current (1µA typ)
Applications
n n n n n n Low battery voltage detector Power Fail Indicator Processor Reset Generator Battery Backup Control Battery Operated Equipment Hand-held Instruments
Circuit Block Diagram
DS200200-1
Typical Application
DS200200-3
© 2001 National Semiconductor Corporation
DS200200
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LMS33460
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Input Voltage to GND Output Voltage to GND Output Continuous Output Current Vapor Phase IR Convection Reflow ESD Rating (Note 4) 8.0V 8.0V 30mA 240°C
Human Body Model Machine Model TJMAX (Note 3) JA (Note 3)
2500V 200V 150°C 478°C/W
Temperature Range
Operating Junction Storage Temperature Range -40°C to +85°C -65°C to +150°C
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25°C. Boldface limits apply at the temperature extremes. Symbol VDET VHYS IIN Parameter Detector Threshold Detector Voltage Hysteresis Input Supply Current Conditions VIN Falling VIN Rising VIN = 2.87V VIN = 4.7V VIN = 7.0V (Note 3) VIN(MAX) VIN(MIN) IOUT(LOW) TpdHL Maximum Operating Voltage Maximum Operating Voltage (Note 2) Output Current Low Output Delay Time Output Transition High to Low CL = 10pF, RL = 470k Detect Voltage Temperature Coefficient VOUT = 0.05V, VIN = 1.1V VOUT = 0.50V, VIN = 1.5V 0.01 2 Min 2.85 0.095 Typ 3.0 0.155 1.0 1.2 25 0.7 1.0 0.6 11 Max 3.15 0.215 2.2 3.6 200 7.0 1.1 1.3 Units V V µA µA µA V V mA
70
130
µsec
VDET/T
± 120
PPM/°C
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device beyond its rated operating conditions. Note 2: Temperature range specifications is guaranteed by design. Note 3: Quiescent current will increase substantially above 5.5 volts, but is very low in the normal range below 5.5 volts. Note 4: Human body model, 1.5k in series with 100pF. Machine model, 0 in series with 200pF.
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LMS33460
Typical Characteristics
(TA = 25°C, RL = 470k and CL = 10pF unless otherwise noted). Detector Threshold vs. Temperature
Supply Current vs. Input Voltage
DS200200-4
DS200200-5
Output Current vs. Input Voltage
Output Delay Time vs. Temperature
DS200200-6
DS200200-7
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