- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：直流/直流开关稳压器 - 升压稳压器
- 功能描述：宽电压范围电源控制器
- 点击这里打开及下载TL499A的技术文档资料
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The TL499A device is an integrated circuit designed to provide a wide range of adjustable regulated supply voltages. The regulated output voltage can be varied from 2.9 V to 30 V by adjusting two external resistors. When the TL499A is ac-coupled to line power through a step-down transformer, it operates as a series DC voltage regulator to maintain the regulated output voltage. With the addition of a battery from 1.1 V to 10 V, an inductor, a filter capacitor, and two resistors, the TL499A operates as a step-up switching regulator during an AC-line failure. The adjustable regulated output voltage makes the TL499A useful for a wide range of applications. Providing backup power during an AC-line failure makes the TL499A extremely useful in microprocessor memory applications. The TL499AC is characterized for operation from –20°C to +85°C.
- Internal Series-Pass and Step-Up Switching Regulator
- Output Adjustable From 2.9 V to 30 V
- 1-V to 10-V Input for Switching Regulator
- 4.5-V to 32-V Input for Series Regulator
- Externally Controlled Switching Current
- No External Rectifier Required
- Vin (Min) (V)
- 1.1
- Vin (Max) (V)
- 10
- Vout (Min) (V)
- 2.9
- Vout (Max) (V)
- 30
- Switch current limit (Typ) (A)
- 0.5
- Regulated outputs (#)
- 1
- Switching frequency (Min) (kHz)
- 500
- Switching frequency (Max) (kHz)
- 1000
- Iq (Typ) (mA)
- 0.8
- Features
- Adjustable Current Limit
- Duty cycle (Max) (%)
- 70
- Rating
- Catalog
TL499A的完整型号有：TL499ACP、TL499ACPSR，以下是这些产品的关键参数及官网采购报价：
TL499ACP，工作温度：-20 to 85，封装：PDIP (P)-8，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网TL499ACP的批量USD价格：1.009（1000+）
TL499ACPSR，工作温度：-20 to 85，封装：SO (PS)-8，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TL499ACPSR的批量USD价格：.877（1000+）
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