A4805 SUPERVISOR (RESET IC) HIGH VOLTAGE HIGH PRECISION VOLTAGE DETECTOR

Transcription

1 DESCRIPTION The is a series of high voltage high-precision voltage detectors developed using standard CMOS process. The detection voltage is fixed internally with an accuracy of ±2.4% Nch open-drain. Low current consumption and miniature package lineup can meet demand from the portable device applications. is available in SOT-89-3 & TO-92 package. TYPICAL APPLICATION FEATURES Low current consumption 3 μa typ.(vin=8v) High-precision detection voltage ±2.4% Operating voltage range -0.3 V to 22 V Detection voltage 2.4 V to 7.0 V (0.1 V step) Output form Nch open-drain output (Active Low) Available in SOT-89-3 & TO-92 package APPLICATION Battery checkers Power failure detectors Power monitor for portable equipments such as pagers, calculators, electronic notebooks and remote controllers. Constant voltage power monitor for cameras, video equipments and communication devices. Power monitor for microcomputers and reset for CPUs. ORDERING INFORMATION Package Type TO-92 SOT89-3 Z K3 Part Number ZY-XXN ZVY-XXN K3R-XXN K3VR-XXN XX: Detect Voltage 33=3.3V, 39=3.9V N: N-channel open drain Note Y: A: Ammo Pack B: Bulk Pack R: Tape & Reel V: Halogen free Package AiT provides all RoHS products Suffix V means Halogen free Package REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

2 PIN DESCRIPTION Top View Top View Pin # TO-92 SOT89-3 Symbol Function 1 1 VOUT Voltage detection output pin 2 2 VIN Voltage input pin 3 3 VSS GND pin REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

3 ABSOLUTE MAXIMUM RATINGS TA = 25 Item Symbol Absolute Maximum Ratings Unit Power Supply Voltage VIN 22 V Output Current IOUT 50 ma Output Voltage N-ch VOUT VSS-0.3~22 V Power Dissipation TO PD SOT Operation ambient Temperature TOPR -40 ~+85 mw REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

4 ELECTRICAL CHARACTERISTICS VDF (T) = 2.4 to 7.0V ±2.4% TA=25 Test Item Symbol Conditions Min Typ. Max Unit circuit Detection Voltage VDF VDFx0.976 VDF VDFx1.024 V 1 Release Voltage VHYS VDFx0.02 VDFx0.05 VDFx0.08 V 1 Current Consumption ISS VIN = 8V ua 2 VDD =3.0V VOUT =0.3V Output Sink Current Output source Current Temperature Coefficient IOL IOH VDD =3.3V VOUT =0.33V 1 2 VDD =3.6V VOUT =0.36V ma 3 VDD =4.1V VOUT =0.41V VDD =3.6V VOUT =3.3V VDD =3.9V VOUT =3.6V VDD =4.2V VOUT =3.9V ma 4 VDD =4.8V VOUT =4.4V ~+85 ± 100 ppm/ REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

5 TEST CIRCUIT Circuit 1 Circuit 2 Circuit 3 Circuit 4 Circuit 5 REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

6 BLOCK DIAGRAM N-Channel Open-Drain Products REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

7 DETAILED INFORMATION Timing Chart Operation 1-1.When the power supply voltage (VDD) is higher than the release voltage (VDF), the Nch transistor is OFF and the Pch transistor is ON to provide VDD (high) at the output When the power supply voltage (VDD) is lower than the release voltage (VDF), the Nch transistor is ON and the Pch transistor is OFF to provide VSS (low) at the output When the VDD falls below the minimum operating voltage, the output becomes undefined, or goes to the VDD when the output is pulled up to the VDD The VSS level appears when the VDD rises above the minimum operating voltage. The VSS level still appears even when the VDD surpasses VDF, as long as it does not exceed the release voltage + VDF When the VDD rises above + VDF the Nch transistor becomes OFF and the Pch transistor becomes ON to provide VDD level at the output. REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

8 APPLICATION CIRCUIT EXAMPLES Microcomputer Reset Circuits REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

9 Power-on Reset Circuit Memory Back-up Circuit Power failure detectors REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

10 Overcharge protect circuit Window Comparator Circuit Detector Adjustable Circuit REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

11 PACKAGE INFORMATION Dimension in TO-92 (Unit: mm) Symbol Min Max A A b c D D E e TYP e L Φ h REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

12 Dimension in SOT89-3 Package (Unit: mm) Symbol Min Max A b b c D D REF E E e TYP e TYP L REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED

13 IMPORTANT NOTICE (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. 's integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. assumes to no liability to customer product design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale. REV1.1 -APR 2009 RELEASED, FEB 2012 UPDATED