TPS3514 Series
3-channel supervisor with overcurrent detect for switch-mode power supplies
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Package / Case▲▼ | Package / Case▲▼ | Package / Case | Reset | Reset Timeout▲▼ | Mounting Type | Voltage - Threshold▲▼ | Type | Number of Voltages Monitored▲▼ | Output | Operating Temperature▲▼ | Operating Temperature▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.003899999894201755 m | 0.003911599982529879 m | 14-SOIC | Active Low | 0.20000000298023224 s | Surface Mount | 3.299999952316284 V, 5 V, 12 V | Multi-Voltage Supervisor | 3 ul | Open Drain or Open Collector | 85 °C | -40 °C | |
0.007619999814778566 m | 0.007619999814778566 m | 14-DIP | Active Low | 0.20000000298023224 s | Through Hole | 3.299999952316284 V, 5 V, 12 V | Multi-Voltage Supervisor | 3 ul | Open Drain or Open Collector | 85 °C | -40 °C |
Key Features
• Over-Voltage Protection andLockout: 12V, 5V, and 3.3V SuppliesOver-Current Protection and Lockout: 12V, 5V, and 3.3V SuppliesUnder-Voltage Protection and Lockout: 12V SuppliesUnder-Voltage Detect: 5V and 3.3V SuppliesFault-Protection Output with Open-Drain Output StageOpen-Drain, Power-Good Output Signal: Monitors Power-Good Signal Input 3.3V and 5V Supplies300ms Power-Good Delay75ms Delay: 5V, 3.3V Power-Supply Short-Circuit Turn-On Protection2.3msPSONControl ToFPOTurn-Off Delay38msPSONControl DebounceWide Supply Voltage Range: 4.5V to 15VAll trademarks are the property of their respective owners.Over-Voltage Protection andLockout: 12V, 5V, and 3.3V SuppliesOver-Current Protection and Lockout: 12V, 5V, and 3.3V SuppliesUnder-Voltage Protection and Lockout: 12V SuppliesUnder-Voltage Detect: 5V and 3.3V SuppliesFault-Protection Output with Open-Drain Output StageOpen-Drain, Power-Good Output Signal: Monitors Power-Good Signal Input 3.3V and 5V Supplies300ms Power-Good Delay75ms Delay: 5V, 3.3V Power-Supply Short-Circuit Turn-On Protection2.3msPSONControl ToFPOTurn-Off Delay38msPSONControl DebounceWide Supply Voltage Range: 4.5V to 15VAll trademarks are the property of their respective owners.
Description
AI
The TPS3514 is a PC switching power-supply system monitor with minimum external components. It provides under-voltage lockout (UVLO), over-voltage (OV), under-voltage (UV), over-current (OC) protection circuits, power-good indicator, and on/off control.
UVLO thresholds are 4.45V (on) and 3.65V (off). Over-current protection (OCP) and over-voltage protection (OVP) monitor 3.3V, 5V, and 12V supplies. When an OC or OV condition is detected, the power-good output (PGO) is asserted low and the fault protection output (FPO) is latched high.PSONfrom low-to-high resets the latch. The OCP function will be enabled 75ms afterPSONgoes LOW with PGI HIGH and a debounce of typically 38ms. A built-in 2.3ms delay with 38ms debounce fromPSONtoFPOoutput is enabled at turn-off.
An external resistor is connected between the RI pin and the GND pin. This will program a precise I(REF)for OCP function. The programmable I(REF)range is from 12.5µA to 62.5µA. Three OCP comparators and the I(REF)section are supplied by VS12. The current draw from the VS12 pin is less than 1mA.
The power-good feature monitors PGI, the 3.3V and 5V supplies, and issues a power-good signal when the output is ready.
The TPS3514 is characterized for operation from -40°C to +85°C. The TPS3514 is available in DIP-14 and SO-14 packages.
The TPS3514 is a PC switching power-supply system monitor with minimum external components. It provides under-voltage lockout (UVLO), over-voltage (OV), under-voltage (UV), over-current (OC) protection circuits, power-good indicator, and on/off control.
UVLO thresholds are 4.45V (on) and 3.65V (off). Over-current protection (OCP) and over-voltage protection (OVP) monitor 3.3V, 5V, and 12V supplies. When an OC or OV condition is detected, the power-good output (PGO) is asserted low and the fault protection output (FPO) is latched high.PSONfrom low-to-high resets the latch. The OCP function will be enabled 75ms afterPSONgoes LOW with PGI HIGH and a debounce of typically 38ms. A built-in 2.3ms delay with 38ms debounce fromPSONtoFPOoutput is enabled at turn-off.
An external resistor is connected between the RI pin and the GND pin. This will program a precise I(REF)for OCP function. The programmable I(REF)range is from 12.5µA to 62.5µA. Three OCP comparators and the I(REF)section are supplied by VS12. The current draw from the VS12 pin is less than 1mA.
The power-good feature monitors PGI, the 3.3V and 5V supplies, and issues a power-good signal when the output is ready.
The TPS3514 is characterized for operation from -40°C to +85°C. The TPS3514 is available in DIP-14 and SO-14 packages.