Overview
The TPS3836K33DBVR is a nano power voltage supervisor from Texas Instruments, designed to provide circuit initialization and timing supervision for digital signal processors (DSP) and processor-based systems. This device is part of the TPS3836, TPS3837, and TPS3838 family, which offers precision supply voltage supervision and power-on reset generation with selectable delay times. The TPS3836K33DBVR is specifically tailored for systems requiring a supply voltage of 3.3 V and features an active-low, push-pull RESET output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.6 V to 6 V | V |
| Supply Current | 220 nA (typical) | nA |
| Threshold Voltage (VIT) | 2.93 V (typical) | V |
| Reset Delay Time | 10 ms or 200 ms (selectable) | ms |
| RESET Output Type | Active-low, push-pull | |
| Package Type | 5-pin SOT23 (DBV) | |
| Operating Temperature Range | –40°C to 85°C | °C |
| High-level Output Voltage (VOH) | 0.8 × VDD | V |
| Low-level Output Voltage (VOL) | 0.4 V | V |
Key Features
- Precision supply voltage supervision range: 1.8 V, 2.5 V, 3.0 V, and 3.3 V
- Power-on reset generator with selectable delay time: 10 ms or 200 ms
- Manual reset capability
- Active-low, push-pull RESET output (for TPS3836)
- Low supply current: 220 nA (typical)
- Available in 5-pin SOT23 and 2-mm × 2-mm SON packages
- Operating temperature range: –40°C to 85°C
Applications
- Low-power DSPs, microcontrollers, or microprocessors
- Portable and battery-powered equipment
- Intelligent instruments
- Wireless communication systems
- Notebook computers
- Applications using the MSP430™ microcontroller
- Automotive systems (see TPS383x-Q1 for automotive-grade versions)
Q & A
- What is the typical supply current of the TPS3836K33DBVR? The typical supply current is 220 nA.
- What are the available reset delay times for the TPS3836K33DBVR? The reset delay times are 10 ms or 200 ms, selectable by connecting CT to GND or VDD.
- What is the threshold voltage (VIT) for the TPS3836K33DBVR? The threshold voltage (VIT) is typically 2.93 V.
- What type of RESET output does the TPS3836K33DBVR have? The TPS3836K33DBVR has an active-low, push-pull RESET output.
- In what package types is the TPS3836K33DBVR available? It is available in 5-pin SOT23 and 2-mm × 2-mm SON packages.
- What is the operating temperature range of the TPS3836K33DBVR? The operating temperature range is –40°C to 85°C.
- How does the manual reset function work on the TPS3836K33DBVR? The manual reset is an active-low logic input; when MR is logic low, the reset output asserts to the active state after the propagation delay.
- What are some typical applications for the TPS3836K33DBVR? Typical applications include low-power DSPs, portable and battery-powered equipment, intelligent instruments, and wireless communication systems.
- Does the TPS3836K33DBVR require a pullup resistor for the RESET output? No, the TPS3836K33DBVR does not require a pullup resistor for its push-pull RESET output.
- How does the device handle power-on reset? During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V, and the supervisory circuit monitors VDD to keep the RESET output active as long as VDD remains below the threshold voltage VIT.
