TL497A 500mA 峰值升压、步降、反向开关稳压器

TL497A
Iout(Max)(A) 0.5  
Iq(Typ)(mA) 11  
Vin(Min)(V) 4.5  
Vin(Max)(V) 12  
Vout(Min)(V) -25  
Vout(Max)(V) 30  
Switch Current Limit(Typ)(A) 0.5  
Operating Temperature Range(°C) -40 to 85,0 to 70  
Pin/Package 14PDIP, 14SO, 14SOIC, 14TSSOP  
Topology Inverting Buck/Boost  
Regulated Outputs(#) 1
TL497A 描述

The TL497A incorporates all the active functions required in the construction of switching voltage regulators. It also can be used as the control element to drive external components for high-power-output applications. The TL497A was designed for ease of use in step-up, step-down, or voltage-inversion applications requiring high efficiency.

The TL497A is a fixed-on-time variable-frequency switching-voltage-regulator control circuit. The switch-on time is programmed by a single external capacitor connected between FREQ CONTROL and GND. This capacitor, CT, is charged by an internal constant-current generator to a predetermined threshold. The charging current and the threshold vary proportionally with VCC. Thus, the switch-on time remains constant over the specified range of input voltage

TL497A 特性
TL497A 芯片订购指南
器件 状态 温度 价格（美元） 封装 | 引脚 封装数量 | 封装载体 丝印标记
TL497ACD ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AC
TL497ACDE4 ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AC
TL497ACDG4 ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AC
TL497ACDR ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AC
TL497ACDRE4 ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AC
TL497ACDRG4 ACTIVE 0 to 70 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AC
TL497ACN ACTIVE 0 to 70 1.05 | 1ku PDIP (N) | 14 25 | TUBE TL497ACN
TL497ACNE4 ACTIVE 0 to 70 1.05 | 1ku PDIP (N) | 14 25 | TUBE TL497ACN
TL497ACNSLE OBSOLETE     SO (NS) | 14    
TL497ACNSR ACTIVE 0 to 70 0.95 | 1ku SO (NS) | 14 2000 | LARGE T&R TL497A
TL497ACNSRE4 ACTIVE 0 to 70 0.95 | 1ku SO (NS) | 14 2000 | LARGE T&R TL497A
TL497ACNSRG4 ACTIVE 0 to 70 0.95 | 1ku SO (NS) | 14 2000 | LARGE T&R TL497A
TL497ACPWR ACTIVE 0 to 70 0.90 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R T497A
TL497ACPWRE4 ACTIVE 0 to 70 0.90 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R T497A
TL497ACPWRG4 ACTIVE 0 to 70 0.90 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R T497A
TL497AID ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AI
TL497AIDE4 ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AI
TL497AIDG4 ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 50 | TUBE TL497AI
TL497AIDR ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AI
TL497AIDRE4 ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AI
TL497AIDRG4 ACTIVE -40 to 85 0.90 | 1ku SOIC (D) | 14 2500 | LARGE T&R TL497AI
TL497AIJ OBSOLETE     CDIP (J) | 14    
TL497AIN ACTIVE -40 to 85 1.05 | 1ku PDIP (N) | 14 25 | TUBE TL497AIN
TL497AINE4 ACTIVE -40 to 85 1.05 | 1ku PDIP (N) | 14 25 | TUBE TL497AIN
TL497A 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TL497ACD Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACD
TL497ACDE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACDE4
TL497ACDG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497ACDG4 TL497ACDG4
TL497ACDR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACDR
TL497ACDRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACDRE4
TL497ACDRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497ACDRG4 TL497ACDRG4
TL497ACN Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type   TL497ACN
TL497ACNE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type   TL497ACNE4
TL497ACNSR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACNSR
TL497ACNSRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACNSRE4
TL497ACNSRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497ACNSRG4 TL497ACNSRG4
TL497ACPWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACPWR
TL497ACPWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497ACPWRE4
TL497ACPWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497ACPWRG4 TL497ACPWRG4
TL497AID Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497AID
TL497AIDE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497AIDE4
TL497AIDG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497AIDG4 TL497AIDG4
TL497AIDR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497AIDR
TL497AIDRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM   TL497AIDRE4
TL497AIDRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TL497AIDRG4 TL497AIDRG4
TL497AIN Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type   TL497AIN
TL497AINE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type   TL497AINE4
TL497A 应用技术支持与电子电路设计开发资源下载
  1. TL497A 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
  3. Dual MOSFET Driver (PDF  498 KB)
  4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
  5. Understanding Boost Power Stages In Switchmode Power Supplies   (PDF  149 KB)
  6. Understanding Buck Power Stages In Switchmode Power Supplies   (PDF  173 KB)
  7. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
  8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  9. 所选封装材料的热学和电学性质 (PDF 645 KB)
  10. 高速数据转换 (PDF 1967 KB)
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