- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述：温度范围为 0°C 至 70°C 的源振铃器控制器
- 点击这里打开及下载UCC3750的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The UCC3750 Source Ringer Controller provides a complete control and drive solution for a four quadrant flyback-based ring generator circuit. The IC controls a primary side switch, which is modulated when power transfer is taking place from input to output. It also controls two secondary switches which act as synchronous rectifier switches during positive power flow. These switches are pulse-width-modulated when the power is being delivered back to the source.
The UCC3750 has an onboard sine wave reference with programmable frequencies of 20Hz, 25Hz and 50Hz. The reference is derived from a high-frequency (32kHz) crystal connected externally. Two frequency-select pins control an internal divider to give a sinusoidal output at 20Hz, 25Hz or 50Hz. The ring generator can also be used at other frequencies by sup-plying externally generated sine-waves to the chip or by clocking the crystal input at a fixed multiple of the desired frequency.
Other features included in the UCC3750 are programmable DC current limit (with buffer amplifier), a charge-pump circuit for gate drive voltage, internal 3V and 7.5V references, a triangular clock oscillator and a buffer amplifier for adding programmable DC offset to the output voltage. The UCC3750 also provides an uncommitted amplifier (AMP) for other signal processing requirements.
- Provides Control for Flyback Based Four Quadrant Amplifier Topology
- Onboard Sine Wave Reference with Low THD
- Selectable Ringing Frequency for Different Phone Systems (20Hz, 25Hz and 50Hz)
- Programmable Output Amplitude and DC Offset
- DC Current Limiting for Short Circuit Protection
- Secondary Side Voltage Mode Control
- Operates from a Single 5V Supply
- Topology
- Flyback, Boost,
- Duty cycle (Max) (%)
- 50
- Supply voltage (Max) (V)
- 7.5
- Operating temperature range (C)
- 0 to 70
- Rating
- Catalog
UCC3750的完整型号有：UCC3750DW、UCC3750DWTR，以下是这些产品的关键参数及官网采购报价：
UCC3750DW，工作温度：0 to 70，封装：SOIC (DW)-28，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC3750DW的批量USD价格：7.62（1000+）
UCC3750DWTR，工作温度：0 to 70，封装：SOIC (DW)-28，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC3750DWTR的批量USD价格：6.35（1000+）
UCC3750DW，工作温度：0 to 70，封装：SOIC (DW)-28，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC3750DW的批量USD价格：7.62（1000+）
UCC3750DWTR，工作温度：0 to 70，封装：SOIC (DW)-28，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC3750DWTR的批量USD价格：6.35（1000+）
