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| Brand Name : | Texas Instruments |
| Model Number : | TL7770-5CDWR |
| Certification : | CE, GCF, ROHS |
| Price : | Negotiable |
| Payment Terms : | T/T, Western Union, |
| Supply Ability : | 1000pcs per month |
| Delivery Time : | 3-5 working days after received the payment |
TL7770-5CDWR High-Accuracy (andplusmn;2%) 5V Voltage Monitor with Manual Reset Low Supply Current (40andmicro;A) Power-On Reset and 200ms Delay in SOIC-8 Package
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Features
Power-On Reset Generator
Automatic Reset Generation After Voltage Drop
RESET Defined When VCC Exceeds 1 V
Wide Supply-Voltage Range . . . 3.5 V to 18 V
Precision Overvoltage and Undervoltage Sensing
250-mA Peak Output Current for Driving SCR Gates
2-mA Active-Low SCR Gate Drive for False-Trigger Protection
Temperature-Compensated Voltage Reference
True and Complementary Reset Outputs
Externally Adjustable Output Pulse Duration
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Applications
Industrial Control and Automation Systems
Automotive Electronics
Computer and Server Systems
Consumer Electronics and Smart Appliances
Security and Critical Systems
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Description
The TL7770 is an integrated-circuit system supervisor designed for use as a reset controller in microcomputer and microprocessor power-supply systems. This device contains two independent supply-voltage supervisors that monitor the supplies for overvoltage and undervoltage conditions at the VSO and VSU terminals, respectively. When VCC attains the minimum voltage of 1 V during power up, the RESET output becomes active (low). As VCC approaches 3.5 V, the time-delay function activates, latching RESET and RESET active (high and low, respectively) for a time delay (td) after system voltages have achieved normal levels. Above VCC = 3.5 V, taking RESIN low activates the time-delay function during normal system-voltage levels. To ensure that the microcomputer system has reset, the outputs remain active until the voltage at VSU exceeds the threshold value, VIT+, for a time delay, which is determined by an external timing capacitor such that: td 20 103 capacitance
where td is in seconds and capacitance is in farads.
The overvoltage-detection circuit is programmable for a wide range of designs. During an overvoltage condition, an internal silicon-controlled rectifier (SCR) is triggered, providing 250-mA peak instantaneous current and 25-mA continuous current to the SCR gate drive terminal, which can drive an external high-current SCR gate or an overvoltage-warning circuit.
The TL7770C series is characterized for operation from 0anddeg;C to 70anddeg;C. The TL7770I series is characterized for operation from andplusmn;40anddeg;C to 85anddeg;C.
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INFORMATION
Category | andnbsp; | |
Manufacturer | Texas Instruments | andnbsp; |
Series | - | andnbsp; |
Packaging | Tape andamp; Reel (TR) Cut Tape (CT) Digi-Reelandreg; | andnbsp; andnbsp; andnbsp; |
Part Status | Active | andnbsp; |
DigiKey Programmable | Not Verified | andnbsp; |
Type | Multi-Voltage Supervisor | andnbsp; |
Number of Voltages Monitored | 2 | andnbsp; |
Voltage - Threshold | 5V, Adj | andnbsp; |
Output | Open Drain or Open Collector | andnbsp; |
Reset | Active High/Active Low | andnbsp; |
Reset Timeout | 270ns Typical Propagation Delay | andnbsp; |
Operating Temperature | 0anddeg;C ~ 70anddeg;C (TA) | andnbsp; |
Mounting Type | Surface Mount | andnbsp; |
Package / Case | 16-SOIC (0.295andquot;, 7.50mm Width) | andnbsp; |
Supplier Device Package | 16-SOIC | andnbsp; |
Base Product Number |
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Drawing

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