TPS61121 具有 1.5V 200mA LDO 的 3.3V 95% 效率升压转换器，用于单节/双节锂离子电池应用领域
TPS61121 描述
The TPS6112x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer or a two up to 4 cells Alkaline, NiCd or NiMH batteries. The devices can generate two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. It also provides a simple solution for generating 3.3 V out of a one-cell Li-Ion or Li-Polymer battery at a maximum output current of at least 200 mA with supply voltages down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the boost switch is limited to a value of 1600 mA.
|
TPS61120 |
TPS61121 |
TPS61122 |
| Iout(Max)(A) |
1.1 |
1.1 |
1.1 |
| Iout2(A) |
0.2 |
|
|
| Iq(Typ)(mA) |
0.04 |
0.04 |
0.04 |
| Vin(Min)(V) |
1.8 |
1.8 |
1.8 |
| Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
| Vout(Min)(V) |
2.5 |
3.3 |
3.6 |
| Vout(Max)(V) |
5.5 |
3.3 |
3.6 |
| Preset Vout(V) |
|
3.3 |
3.6 |
| Vout2(Min)(V) |
|
1.5 |
3.3 |
| Vout2(Max)(V) |
|
1.5 |
3.3 |
| Vout2 Adj(Min)(V) |
0.9 |
|
|
| Vout2 Adj(Max)(V) |
5.5 |
|
|
| Switching Frequency(Max)(kHz) |
600 |
600 |
600 |
| Regulated Outputs(#) |
2 |
2 |
2 |
| Duty Cycle(Max)(%) |
100 |
100 |
100 |
| Switch Current Limit(Typ)(A) |
1.6 |
1.6 |
1.6 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
| Pin/Package |
16QFN, 16TSSOP |
16QFN, 16TSSOP |
16TSSOP |
| Topology |
Boost |
Boost |
Boost |
TPS61121 特性
- Synchronous, 95% Efficient, Boost Converter With 500-mA Output Current From 1.8-V Input
- Integrated 200-mA Reverse Voltage Protected LDO for DC/DC Output Voltage Post Regulation or Second Output Voltage
- 40-µA (Typical) Total Device Quiescent Current
- Input Voltage Range: 1.8-V to 5.5-V
- Fixed and Adjustable Output Voltage Options up to 5.5-V
- Power Save Mode for Improved Efficiency at Low Output Power
- Low Battery Comparator
- Power Good Output
- Low EMI-Converter (Integrated Antiringing Switch)
- Load Disconnect During Shutdown
- Overtemperature Protection
- Available in a Small 4mm x 4mm QFN-16 or in a TSSOP-16 Package
TPS61121 器件用途
- All Single Cell Li or Dual Cell Battery or USB Powered Products as MP-3 Player, PDAs, and Other Portable Equipment
- Dual Input or Dual Output Mode
- Simple Li-Ion to 3.3-V Conversion
TPS61121 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 |
| TPS61121PW |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (PW) | 16 |
70 | TUBE |
TPS61121 |
| TPS61121PWG4 |
ACTIVE |
-40 to 85 |
2.10 | 1ku |
TSSOP (PW) | 16 |
70 | TUBE |
TPS61121 |
| TPS61121PWR |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
TSSOP (PW) | 16 |
2000 | LARGE T&R |
TPS61121 |
| TPS61121PWRG4 |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
TSSOP (PW) | 16 |
2000 | LARGE T&R |
TPS61121 |
| TPS61121RSAR |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
QFN (RSA) | 16 |
3000 | LARGE T&R |
TPS6
1121 |
| TPS61121RSARG4 |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
QFN (RSA) | 16 |
3000 | LARGE T&R |
TPS6
1121 |
TPS61121 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 |
| TPS61121PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS61121PW |
| TPS61121PWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS61121PWG4 |
TPS61121PWG4 |
| TPS61121PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
TPS61121PWR |
| TPS61121PWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS61121PWRG4 |
TPS61121PWRG4 |
| TPS61121RSAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
TPS61121RSAR |
| TPS61121RSARG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS61121RSARG4 |
TPS61121RSARG4 |
TPS61121 应用技术支持与电子电路设计开发资源下载
- TPS61121 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)
TPS61121 相关工具
