Overview
The SN6505BQDBVRQ1 is a low-noise, low-EMI push-pull transformer driver produced by Texas Instruments. This device is specifically designed for small form factor, isolated power supplies and is AEC-Q100 (Grade 1) qualified for automotive applications. It operates within a wide input voltage range of 2.25 V to 5.5 V and is capable of driving low-profile, center-tapped transformers. The SN6505BQDBVRQ1 features reduced conducted and radiated EMI through slew rate control of the output switch voltage and Spread Spectrum Clocking (SSC).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer's Part Number | SN6505BQDBVRQ1 |
| Package Code | LSSOP |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| No. of Terminals | 6 |
| Terminal Form | GULL WING |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Minimum Supply Voltage | 2.25 V |
| Nominal Supply Voltage | 5 V |
| Maximum Supply Voltage | 5.5 V |
| Maximum Output Current | 1.5 A |
| Maximum Operating Temperature | 125°C |
| Minimum Operating Temperature | -40°C |
| Internal Oscillator Frequency | 420 kHz |
| Current Limit | 1.7 A |
| Shutdown Current | <1 µA |
Key Features
- Reduced conducted and radiated EMI through slew rate control and Spread Spectrum Clocking (SSC).
- Precision internal oscillator options: 420 kHz for higher efficiency and smaller transformer size.
- Synchronization of multiple devices with external clock input.
- Soft-start enabled to reduce in-rush current during power-up.
- Internal protection features include 1.7 A current limiting, under-voltage lockout, thermal shutdown, and break-before-make circuitry.
- Low RON of 0.25 Ω max at 4.5 V supply.
- Functional Safety-Capable with documentation available to aid functional safety system design.
- Small 6-pin SOT23 (DBV) package.
Applications
The SN6505BQDBVRQ1 is designed for use in isolated power supplies, particularly in automotive and other applications where low noise and EMI are critical. It is suitable for driving low-profile, center-tapped transformers and can be used in systems requiring high efficiency and small form factors.
Q & A
- What is the primary function of the SN6505BQDBVRQ1?
The SN6505BQDBVRQ1 is a low-noise, low-EMI push-pull transformer driver designed for isolated power supplies.
- What is the input voltage range of the SN6505BQDBVRQ1?
The input voltage range is from 2.25 V to 5.5 V.
- What is the maximum output current of the SN6505BQDBVRQ1?
The maximum output current is 1.5 A.
- What are the key features for reducing EMI in the SN6505BQDBVRQ1?
The device features slew rate control of the output switch voltage and Spread Spectrum Clocking (SSC) to reduce EMI.
- What is the internal oscillator frequency of the SN6505BQDBVRQ1?
The internal oscillator frequency is 420 kHz.
- Does the SN6505BQDBVRQ1 have a soft-start feature?
Yes, the SN6505BQDBVRQ1 includes a soft-start feature to reduce in-rush current during power-up.
- What are the internal protection features of the SN6505BQDBVRQ1?
The internal protection features include 1.7 A current limiting, under-voltage lockout, thermal shutdown, and break-before-make circuitry.
- What is the package type and pin count of the SN6505BQDBVRQ1?
The device is packaged in a 6-pin SOT23 (DBV) package.
- Is the SN6505BQDBVRQ1 qualified for automotive applications?
Yes, it is AEC-Q100 (Grade 1) qualified for automotive applications.
- What is the operating temperature range of the SN6505BQDBVRQ1?
The operating temperature range is from -40°C to 125°C.
