TPS62321 采用 QFN 或芯片级封装的 1.5V、500mA、3MHz 步降转换器
TPS62321 描述
The TPS623xx device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS623xx supports up to 500-mA load current and allows the use of tiny, low cost chip inductor and capacitors.
The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery or by 3-cell NiMH/NiCd batteries. With an output voltage range from 5.4 V down to 0.6 V, the device supports the low-voltage TMS320 DSP family, processors in smart-phones, PDAs as well as notebooks, and handheld computers.
The TPS62300 operates at 3-MHz fixed switching frequency and enters the power-save mode operation at light load currents to maintain high efficiency over the entire load current range
|
TPS62320 |
TPS62321 |
| Iout(Max)(A) |
0.5 |
0.5 |
| Vin(Min)(V) |
2.7 |
2.7 |
| Vin(Max)(V) |
6 |
6 |
| Vout(Min)(V) |
0.6 |
1.5 |
| Vout(Max)(V) |
5.4 |
1.5 |
| Preset Vout(V) |
|
1.5 |
| Iq(Typ)(mA) |
0.086 |
0.086 |
| Switching Frequency(Max)(kHz) |
3000 |
3000 |
| Switch Current Limit(Typ)(A) |
0.74 |
0.74 |
| Topology |
Buck |
Buck |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
| Pin/Package |
10SON, 8DSBGA |
10SON, 8DSBGA |
| Rating |
Catalog |
Catalog |
| Duty Cycle(Max)(%) |
100 |
100 |
| Regulated Outputs(#) |
1 |
1 |
TPS62321 特性
- Up to 93% Efficiency at 3-MHz Operation
- Up to 500-mA Output Current at VI = 2.7 V
- 3-MHz Fixed Frequency Operation
- Best in Class Load and Line Transient
- Complete 1-mm Component Profile Solution
- –0.5%/+1.3% PWM DC Voltage Accuracy Over Temperature
- 35-ns Minimum On-Time
- Power-Save Mode Operation at Light Load Currents
- Fixed and Adjustable Output Voltage
- Only 86-µA Quiescent Current
- 100% Duty Cycle for Lowest Dropout
- Synchronizable On the Fly to External
Clock Signal
- Integrated Active Power-Down Sequencing (TPS6232x only)
- Available in a 10-Pin QFN (3 × 3 mm), 8-Pin NanoFree™, and NanoStar™ (CSP) Packaging
- APPLICATIONS
- Cell Phones, Smart-Phones
- WLAN and Bluetooth™ Applications
- Micro DC-DC Converter Modules
- PDAs, Pocket PCs
- USB-Based DSL Modems
TPS62321 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 |
| TPS62321DRCR |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
AMX |
| TPS62321DRCRG4 |
ACTIVE |
-40 to 85 |
1.20 | 1ku |
SON (DRC) | 10 |
3000 | LARGE T&R |
AMX |
| TPS62321YEDR |
ACTIVE |
-40 to 85 |
1.25 | 1ku |
DSBGA (YED) | 8 |
3000 | LARGE T&R |
|
| TPS62321YEDT |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
DSBGA (YED) | 8 |
250 | SMALL T&R |
|
| TPS62321YZDR |
ACTIVE |
-40 to 85 |
1.25 | 1ku |
DSBGA (YZD) | 8 |
3000 | LARGE T&R |
|
| TPS62321YZDT |
ACTIVE |
-40 to 85 |
1.40 | 1ku |
DSBGA (YZD) | 8 |
250 | SMALL T&R |
|
TPS62321 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 |
| TPS62321DRCR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS62321DRCR |
| TPS62321DRCRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS62321DRCRG4 |
| TPS62321YZDR |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
|
TPS62321YZDR |
| TPS62321YZDT |
Green (RoHS & no Sb/Br) |
SNAGCU |
Level-1-260C-UNLIM |
|
TPS62321YZDT |
TPS62321 应用技术支持与电子电路设计开发资源下载
- TPS62321 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)
TPS62321 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS62321 评估模块 |
TPS62321EVM-085 |
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 |
TPS62321 参考设计
| 说明 |
型号 |
公司 |
| LDO、降压/升压、2 相同步降压、同步升压参考设计 |
PR038 |
Texas Instruments |
| 以太网电源 - 同步反向参考设计 |
PMP386 |
Texas Instruments |
| 同步 降压，两个输入电压 4.5-5.5V 的升压 多输出电压 3.3V、5V 和 12V |
PMP146 |
Texas Instruments |
| 降压/升压参考设计 |
PMP379 |
Texas Instruments |
