TPS40042 低引脚数、低 Vin 同步降压 DCDC 控制器
|
TPS40040 |
TPS40041 |
TPS40042 |
| Topology |
Buck |
Buck |
Buck |
| Vin(Min)(V) |
2.25 |
2.25 |
3.0 |
| Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
| Vout(Min)(V) |
0.6 |
0.6 |
0.6 |
| Vout(Max)(V) |
4.95 |
4.84 |
4.95 |
| Regulated Outputs(#) |
1 |
1 |
1 |
| Iout(Max)(A) |
15 |
15 |
15 |
| Switching Frequency(Max)(kHz) |
300 |
600 |
600 |
| Iq(Typ)(mA) |
2 |
2 |
2 |
| Pin/Package |
8SON |
8SON |
10SON |
| Thermal Shutdown |
Yes |
Yes |
Yes |
| Rating |
Catalog |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
90 |
88 |
90 |
TPS40042 描述
The TPS40042 DC/DC controller is designed to operate with an input source between a 3.0 V and 5.5 V. To reduce the number of external components, a number of operating parameters are fixed internally. The operating frequency for example, is internally set at 600 kHz.
One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground (no resistor is the default setting). During power on, and before the internal soft start commands the output voltage to rise, the TPS40042 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.5-ms calibration time, the output voltage is allowed to enter soft-start.
TPS40042 特性
- 3.0-V to 5.5-V Input
- External Reference required: 0.5 V to 1.5 V
- Output Voltage from REFIN to 90% of VIN
- High-Side Drive for N-Channel FET
- Supports Pre-Biased Outputs
- Adaptive Anti-Cross Conduction Gate Drive
- Fixed switching frequency (600 kHz) Voltage Mode Control
- Three Selectable Short Circuit Protection Levels
- Hiccup Restart from Faults
- Active Low Enable
- Thermal Shutdown Protection at 145°C
- 10-Pin, 3-mm x 3-mm SON (DRC)
- APPLICATIONS
- DDR Memory
- Point of Load
- Telecommunications
- DC to DC Modules
TPS40042 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 |
| TPS40042DRCR |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
0042 |
| TPS40042DRCRG4 |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
0042 |
| TPS40042DRCT |
ACTIVE |
-40 to 85 |
0.99 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
0042 |
| TPS40042DRCTG4 |
ACTIVE |
-40 to 85 |
0.99 | 1ku |
SON (DRC) | 10 |
250 | SMALL T&R |
0042 |
TPS40042 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 |
| TPS40042DRCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40042DRCR |
| TPS40042DRCRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40042DRCRG4 |
TPS40042DRCRG4 |
| TPS40042DRCT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS40042DRCT |
| TPS40042DRCTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS40042DRCTG4 |
TPS40042DRCTG4 |
TPS40042 应用技术支持与电子电路设计开发资源下载
- TPS40042 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)
TPS40042 参考设计
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS40042 5V 输入、1.8V 输出、6A 评估模块 |
TPS40042EVM-001 |
Texas Instruments |
开发电路板/EVM |
| SwitcherPro(TM) 开关电源设计工具 |
SWITCHERPRO |
Texas Instruments |
应用软件 |
