TPS54262-Q1 具有低 IQ、电压监控和复位功能的汽车类 2A、60V 降压 DC/DC 转换器
TPS54262-Q1 描述
The TPS54262 is a step-down switch-mode power supply with a voltage supervisor and an integrated NMOS switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features low-power mode operation under light load conditions which reduces the supply current to 50 uA (typical). By pulling the EN pin low, the supply shutdown current is reduced to 1 uA (typical).
An open drain reset signal indicates when the nominal output drops below the reset threshold set by an external resistor divider network. The output voltage start up ramp is controlled by a soft start capacitor.
|
TPS54162-Q1 |
TPS54262-Q1 |
TPS54362-Q1 |
| Iout(Max)(A) |
1 |
2 |
3 |
| Vin(Min)(V) |
3.6 |
3.6 |
3.6 |
| Vin(Max)(V) |
60 |
60 |
60 |
| Vout(Min)(V) |
0.9 |
0.9 |
0.9 |
| Vout(Max)(V) |
18 |
18 |
18 |
| Iq(Typ)(mA) |
0.05 |
0.05 |
0.065 |
| Switching Frequency(Max)(kHz) |
2200 |
2200 |
2200 |
| Switch Current Limit(Typ)(A) |
2.15 |
3.2 |
6 |
| Topology |
Buck |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 125 |
-40 to 125 |
-40 to 125 |
| Pin/Package |
20HTSSOP |
20HTSSOP |
20HTSSOP |
| Rating |
Automotive |
Automotive |
Automotive |
| Regulated Outputs(#) |
|
1 |
1 |
| Thermal Shutdown |
Yes |
Yes |
Yes |
TPS54262-Q1 特性
- Asynchronous Switch Mode Regulator
- 3.6 V to 48 V Operating Range, Withstands Transients up to 60 V
- 2 A Maximum Load Current
- 50 uA Typical Quiescent Current
- 200 kHz to 2.2 MHz Switching Frequency
- 0.8 V ± 1.5% Voltage Reference
- High Voltage Tolerant Enable Input
- Soft Start on Enable Cycle
- Slew Rate Control on Internal Power Switch
- Low-Power Mode for Light Load Conditions
- Programmable Delay for Power-On Reset
- External Compensation for Error Amplifier
- Reset Function Filter Time for Fast Negative Transients
- Programmable Overvoltage, Undervoltage Output Monitor
- Thermal Sensing and Shutdown
- Switch Current Limit Protection
- Short Circuit and Overcurrent Protection of FET
- Junction Temperature Range: –40°C to 150°C
- 20-Pin HTSSOP PowerPADTM Package
- APPLICATIONS
TPS54262-Q1 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS54262QPWPRQ1 |
ACTIVE |
-40 to 125 |
2.65 | 1ku |
HTSSOP (PWP) | 20 |
2000 | LARGE T&R |
54262Q1 |
TPS54262-Q1 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 |
| TPS54262QPWPRQ1 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS54262QPWPRQ1 |
TPS54262-Q1 应用技术支持与电子电路设计开发资源下载
- TPS54262-Q1 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)