LKWIC LKQ7933TST
| Manufacturer | LKWICAsian Brands |
| MPN | LKQ7933TST |
| LCSC Part # | C51891969 |
| Packaging | SOT-23-5 |
| Customer # | |
| Key Attributes | 140ms Active Low 1.2V~5.5V 1 SOT-23-5 Supervisors |
| Datasheet | LKWIC LKQ7933TST |
| Alternative Parts | 1 |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Supervisors | |
| Manufacturer | LKWIC | |
| Packaging | SOT-23-5 | |
| Operating Temperature | -40℃~+85℃ | |
| output type | Open-drain | |
| Reset Timeout | 140ms | |
| Function | Watchdog timer;Manual reset input | |
| Reset Active Level | Active Low | |
| standby current | 30uA | |
| Voltage - Supply | 1.2V~5.5V | |
| ChipType | Power Supervisor | |
| Threshold Voltage | 3.08V | |
| Number of Voltages Monitored | 1 |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Supervisors | |
| Manufacturer | LKWIC | |
| Packaging | SOT-23-5 | |
| Operating Temperature | -40℃~+85℃ | |
| output type | Open-drain | |
| Reset Timeout | 140ms | |
| Function | Watchdog timer;Manual reset input |
| Type | Description | |
|---|---|---|
| Reset Active Level | Active Low | |
| standby current | 30uA | |
| Voltage - Supply | 1.2V~5.5V | |
| ChipType | Power Supervisor | |
| Threshold Voltage | 3.08V | |
| Number of Voltages Monitored | 1 |
Introduction
LKQ7933xST is a family of low-voltage power supply monitoring circuits with manual reset and watchdog functions, designed for power-on reset and power-down protection of digital controllers such as processors or MCUs. The watchdog timer clears when RESET# is asserted or the watchdog is toggled; as long as RESET# is not asserted, the watchdog continues counting. This family provides an open-drain, active-low reset output.
Features
- Supply voltage range: 1.2V ~ 5.5V
- Reset delay time: 140ms (minimum)
- Watchdog period: 1.6s
- Manual reset function
- Reset output: open-drain, active-low (RESET#)
- Multiple selectable reset threshold voltages: 3.08V (LKQ7933TST), 2.93V (LKQ7933SST), 2.63V (LKQ7933RST)
Applications
- Set-top boxes
- Computers & controllers
- Smart meters
- Embedded controllers
- Portable battery-powered devices
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 2.4683 | $ 2.47 |
| 10+ | $ 2.0988 | $ 20.99 |
| 30+ | $ 1.8656 | $ 55.97 |
| 100+ | $ 1.6275 | $ 162.75 |
| 500+ | $ 1.5207 | $ 760.35 |
| 1,000+ | $ 1.4747 | $ 1474.70 |
Standard Packaging2500/Full Reel | ||
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Supervisors | |
| Manufacturer | LKWIC | |
| Packaging | SOT-23-5 | |
| Operating Temperature | -40℃~+85℃ | |
| output type | Open-drain | |
| Reset Timeout | 140ms | |
| Function | Watchdog timer;Manual reset input | |
| Reset Active Level | Active Low | |
| standby current | 30uA | |
| Voltage - Supply | 1.2V~5.5V | |
| ChipType | Power Supervisor | |
| Threshold Voltage | 3.08V | |
| Number of Voltages Monitored | 1 |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Supervisors | |
| Manufacturer | LKWIC | |
| Packaging | SOT-23-5 | |
| Operating Temperature | -40℃~+85℃ | |
| output type | Open-drain | |
| Reset Timeout | 140ms | |
| Function | Watchdog timer;Manual reset input |
| Type | Description | |
|---|---|---|
| Reset Active Level | Active Low | |
| standby current | 30uA | |
| Voltage - Supply | 1.2V~5.5V | |
| ChipType | Power Supervisor | |
| Threshold Voltage | 3.08V | |
| Number of Voltages Monitored | 1 |
Introduction
LKQ7933xST is a family of low-voltage power supply monitoring circuits with manual reset and watchdog functions, designed for power-on reset and power-down protection of digital controllers such as processors or MCUs. The watchdog timer clears when RESET# is asserted or the watchdog is toggled; as long as RESET# is not asserted, the watchdog continues counting. This family provides an open-drain, active-low reset output.
Features
- Supply voltage range: 1.2V ~ 5.5V
- Reset delay time: 140ms (minimum)
- Watchdog period: 1.6s
- Manual reset function
- Reset output: open-drain, active-low (RESET#)
- Multiple selectable reset threshold voltages: 3.08V (LKQ7933TST), 2.93V (LKQ7933SST), 2.63V (LKQ7933RST)
Applications
- Set-top boxes
- Computers & controllers
- Smart meters
- Embedded controllers
- Portable battery-powered devices
C51891969 EasyEDA Library
Compliance & Export Codes
| Type | Details |
|---|---|
| ECCN | - |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| ECCN | - |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Alternative Parts
| MPN | Manufacturer | Alternative Type | Packaging | Availability | Unit Price | ||
|---|---|---|---|---|---|---|---|
| LKQ7933SST | LKWIC | Similar | SOT-23-5 | 183 | $ 1.8406 |



