TC52 MICROCHIP | Alldatasheet
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- Two Independent Voltage Detectors in One Package Highly Accurate: ±2% Low Power Consumption: 2.0 µA, Typ. Detect Voltage Range: 1.5V to 5.0V Operating Voltage: 1.5V to 10.0V Output Configuration: N-Channel Open-Drain Space-Saving 5-Pin SOT-23A Package Typical Applications Battery Life Monitors and Recharge Voltage Monitors Memory Battery Backup Circuitry Power-On Reset Circuits Power Failure Detection Delay Circuitry Device Selection Table Other output voltages are available. Please contact Microchip Technology Inc. for details. Package Type General Description The TC52 consists of two independent low power voltage detectors in a space-saving 5-pin SOT-23A package. Typical supply current consumption is only 2µA at an input voltage of 2V. The voltage detection threshold settings are factory-programmed and guaranteed to ±2% accuracy. Threshold settings over a range of 1.5V to 5.0V are available. The TC52 is available with open drain (NMOS) configurations. Small size, high precision, low supply current, and low installed cost makes the TC52 the ideal voltage detector for a wide variety of voltage monitoring applications. Functional Block Diagram Part Number Package Temp. Range TC52-xxxxxxxxxx 5-Pin SOT-23A -40°C to +85°C VOUT2 VOUT1 GND 5-Pin SOT-23A TC52 1 3 VIN2 VIN1 VREF VIN1 VOUT1 VOUT2 GND VIN2 Dual Channel Voltage Detector
DS21430B-page 2 2002 Microchip Technology Inc.
1.0 ELECTRICAL
Absolute Maximum Ratings* Power Dissipation *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 device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. TC52 ELECTRICAL SPECIFICATIONS Electrical Characteristics: TA = 25°C, unless otherwise specified. Note 1. Symbol Parameter Min Typ Max Units Test Conditions VIN Operating Voltage 1.5 — 10.0 V VDF (T) = 1.5 to 5.0V ISS Supply Current — 1.35 1.50 1.95 2.40 3.00 3.90 4.50 5.10 5.70 6.30 µA VIN1 = 1.5V VIN1 = 2.0V VIN1 = 3.0V VIN1 = 4.0V VIN1 = 5.0V IIN2 Input Current VIN2 — 0.45 0.50 0.65 0.80 1.00 1.30 1.50 1.70 1.90 2.10 µA VIN1 = 1.5V VIN1 = 2.0V VIN1 = 3.0V VIN1 = 4.0V VIN1 = 5.0V VDET1 - Channel 1 Detect Voltage VT1 x 0.98 VT1 ±0.5% VT1 x 1.02 V Note 2 VDET2 - Channel 2 Detect Voltage VT2 x 0.98 VT2 ±0.5% VT2 x 1.02 V Note 2 VHYS1 Hysteresis Range 1 VDET1 - x 0.02 VDET1 - x 0.05 VDET1 - x 0.08 V VHYS2 Hysteresis Range 2 VDET2 - x 0.02 VDET2 - x 0.05 VDET2 - x 0.08 V IOUT Output Current 0.3 3.0 5.0 6.0 7.0 2.2 7.7 10.1 11.5 13.0 mA VOL = 0.5V, VIN1 = 1.0V VIN1 = 2.0V VIN1 = 3.0V VIN1 = 4.0V VIN1 = 5.0V ∆VDET -/ (∆TOPR VDET -) Temperature Characteristics — ±100 — ppm/°C -40°C ≤ TOPR ≤ 85°C tDLY Detection Time — — 0.2 msec Time from VIN = VDET - to VOUT = VOL Note 1: Additional resistance between the VIN1 pin and the supply voltage may alter the electrical characteristics. 2: VT1, VT2 are the factory-programmed voltage detection thresholds.
2002 Microchip Technology Inc. DS21430B-page 3 TC52
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE
3.0 DETAILED DESCRIPTION
In normal steady-state operation and for either channel, when V IN > V DET -, the output is high, see Figure 3-1. (In the case of the TC52N, this is an open- drain condition.) If and when the input falls below VDET -, the output pulls down (Logic 0) to V SS. Generally, VOUT can pull down to within 0.5V of VSS at rated output current and input voltages. (Also see Section 1.0, Electrical Characteristics). The output, VOUT, stays valid until the input voltage falls below the minimum operating voltage, V INMIN, of 0.7V. Below this minimum operating voltage, the output is undefined. During power-up or anytime V IN has fallen below VINMIN, VOUT will remain undefined until VIN rises above VINMIN, at which time the output becomes valid. VOUT is maintained in its active low state while VINMIN < VIN < V DET+. (VDET+ = VDET - + V HYST). If and when the input rises above VDET+, the output will assume its inactive state (open-drain for TC52N). FIGURE 3-1: TIMING DIAGRAM Pin No. (5-Pin SOT-23A) Symbol Description 1 VOUT1 Detector #1 output. 2 VIN Supply voltage input, detect voltage 1. 3 GND Ground terminal. 4 VIN2 Detect voltage 2. 5 VOUT2 Detector #2 output. VINx Detect Voltage VDET– Minimum Operating Voltage VHYST VDET+ Output Voltage Release Voltage or RESET Voltage Ground Level Ground Level VOUTx
DS21430B-page 4 2002 Microchip Technology Inc.
4.0 APPLICATIONS INFORMATION
Pin 2 (VIN1) acts as both the input to Voltage Detector #1, as well as the power supply input for the chip. As such, always assign V IN1 to monitor voltages between 1.5V and 10V. Failure to do this will result in unreliable detector operation due to an out-of-tolerance supply voltage. In high noise environments, it may be necessary to install a small input bypass capacitor (0.01µF to 0.1µF) from V IN1 to ground to minimize on- chip power supply noise.
4.1 Battery and Main Supply Monitor
The circuit shown in Figure 4-1 provides both a processor supply monitor/reset function, as well as a low battery detect function. As shown, the TC52N3330ECT (N-Channel outputs) uses Detector 2 to monitor the system power supply rail. When the power supply is 10% below its nominal output voltage rating, the V OUT2 output is driven and held low. When the power supply voltage is above 3.0V nominal, VOUT2 is driven to an open circuit and the combination of R 1 and C 1 provides a reset time out delay. Detector 1 monitors the voltage on the main supply battery. A low battery condition is indicated when the battery voltage falls to 3.3V, at which time the main processor is interrupted to initiate a warning or system shutdown. FIGURE 4-1: SUPPLY MONITOR AND PROCESSOR SUPERVISOR TC105 Step Down DC/DC Converter Battery VIN2 VOUT2 GND TC52N3330ECT VIN1 VOUT1 RESET Processor INT System 3.3V +3.3V 47K + C1 1µF– +3.3V 47K
2002 Microchip Technology Inc. DS21430B-page 5 TC52
5.0 PACKAGING INFORMATION
5.1 Package Marking Information
Note: Symbols for other custom voltages set prior to shipment.
5.2 Taping Form
Symbol Detect Voltage 1 Detect Voltage 2 0P 4.5 2.7 1 represents N-channel indication and integer part of output voltage 2 represents registration serial number3 4 represents assembly lot code Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 5-Pin SOT-23A 8 mm 4 mm 3000 7 in Carrier Tape, Number of Components Per Reel and Reel Size User Direction of Feed Device Marking PIN 1 Standard Reel Component Orientation TR Suffix Device (Mark Right Side Up) W P
DS21430B-page 6 2002 Microchip Technology Inc.
5.3 Package Dimensions
.071 (1.80) .059 (1.50) .122 (3.10) .098 (2.50) .075 (1.90) REF. .020 (0.50) .012 (0.30) PIN 1 .037 (0.95) REF. .122 (3.10) .106 (2.70) .057 (1.45) .035 (0.90) .006 (0.15) .000 (0.00) .024 (0.60) .004 (0.10) .004 (0.09) SOT-23A-5 Dimensions: inches (mm)
2002 Microchip Technology Inc. DS21430B-page7 TC52 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. Sales and Support PART CODE TC52 N 45 27 E CT XX Output Configuration: N = Open Drain Detected Voltage 1*: Ex: 45 = 4.5V Detected Voltage 2*: Ex: 27 = 2.7V Temperature: E: -40°C to +85°C Package Type and Pin Count: CT: 5-Pin SOT-23A Taping Direction: TR: Standard Taping *Other voltages are available. Please contact Microchip Technology Inc. for details. Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom- mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. Your local Microchip sales office 2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 3. The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
DS21430B-page8 2002 Microchip Technology Inc. NOTES:
2002 Microchip Technology Inc. DS21430B-page 9 TC52 Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical com- ponents in life support systems is not authorized except with express written approval by Microchip. No licenses are con- veyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, FilterLab, KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, PICSTART, PRO MATE, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Tech- nology Incorporated in the U.S.A. and other countries. dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, MXDEV, MXLAB, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified.
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