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
- High Efficiency . . . 60% or Greater
- Peak Switch Current . . . 500 mA
- Input Current Limit Protection
- TTL-Compatible Inhibit
- Adjustable Output Voltage
- Input Regulation . . . 0.2% Typ
- Output Regulation . . . 0.4% Typ
- Soft Start-Up Capability
- Can be Used in Buck, Boost, and Inverting Configurations
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
- TL497A 数据资料 dataSheet 下载.PDF
- TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Understanding Boost Power Stages In Switchmode Power Supplies
(PDF 149 KB)
- Understanding Buck Power Stages In Switchmode Power Supplies
(PDF 173 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
