TPS70451 具有双路使能输入和用于分压系统的 SVS 的双路输出 (3.3V/1.8V)1A/2A LDO 稳压器
TPS70451 描述
The TPS704xx family of devices consists of dual-output, low-dropout voltage regulators with integrated SVS (RESET, POR, or power on reset) and power good (PG) functions. These devices are capable of supplying 1 A and 2 A by regulator 1 and regulator 2 respectively. Quiescent current is typically 185 µA at full load. Differentiated features, such as accuracy, fast transient response, SVS supervisory circuit (power on reset), manual reset input, and independent enable functions provide a complete system solution.
The TPS704xx family of voltage regulators offers very low dropout voltage and dual outputs. These devices have extremely low noise output performance without using any added filter bypass capacitors and are designed to have a fast transient response and be stable with 47-µF low ESR capacitors.
|
TPS70402 |
TPS70445 |
TPS70448 |
TPS70451 |
TPS70458 |
| Iout(Max)(A) |
2 |
2 |
2 |
2 |
2 |
| Iout2(A) |
1 |
1 |
1 |
1 |
1 |
| Vdo(Typ)(mV) |
160 |
160 |
160 |
160 |
160 |
| Vin(Min)(V) |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
| Vin(Max)(V) |
6 |
6 |
6 |
6 |
6 |
| Fixed Output Options(V) |
|
3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2 |
3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2 |
3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2 |
3.3/2.5, 3.3/1.8, 3.3/1.5, 3.3/1.2 |
| Accuracy(%) |
2 |
2 |
2 |
2 |
2 |
| Output Capacitor(uF) |
22 |
22 |
22 |
22 |
22 |
| Output Capacitor Type |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
| Pin/Package |
24HTSSOP |
24HTSSOP |
24HTSSOP |
24HTSSOP |
24HTSSOP |
| Vout2(Min)(V) |
1.22 |
1.2 |
1.5 |
1.8 |
2.5 |
| Vout2(Max)(V) |
5.5 |
1.2 |
1.5 |
1.8 |
2.5 |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Vout(Min)(V) |
|
3.3 |
3.3 |
3.3 |
3.3 |
| Vout(Max)(V) |
|
3.3 |
3.3 |
3.3 |
3.3 |
| Regulated Outputs(#) |
2 |
2 |
2 |
2 |
2 |
TPS70451 特性
- Dual Output Voltages for Split-Supply Applications
- Independent Enable Functions (See Part Number TPS703xx
for Sequenced Outputs)
- Output Current Range of 1 A on Regulator 1 and 2 A on Regulator 2
- Fast Transient Response
- Voltage Options: 3.3-V/2.5-V, 3.3-V/1.8-V, 3.3-V/1.5-V,
3.3-V/1.2-V, and Dual Adjustable Outputs
- Open Drain Power-On Reset with 120-ms Delay
- Open Drain Power Good for Regulator 1 and Regulator 2
- Ultralow 185µA (typ) Quiescent Current
- 2µA Input Current During Standby
- Low Noise: 78µVRMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- One Manual Reset Input
- 2% Accuracy Over Load and Temperature
- Undervoltage Lockout (UVLO) Feature
- 24-Pin PowerPAD™ TSSOP Package
- Thermal Shutdown Protection
TPS70451 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 |
| TPS70451PWP |
ACTIVE |
-40 to 125 |
2.55 | 1ku |
HTSSOP (PWP) | 24 |
60 | TUBE |
PT70451 |
| TPS70451PWPG4 |
ACTIVE |
-40 to 125 |
2.55 | 1ku |
HTSSOP (PWP) | 24 |
60 | TUBE |
PT70451 |
| TPS70451PWPR |
ACTIVE |
-40 to 125 |
2.35 | 1ku |
HTSSOP (PWP) | 24 |
2000 | LARGE T&R |
PT70451 |
| TPS70451PWPRG4 |
ACTIVE |
-40 to 125 |
2.35 | 1ku |
HTSSOP (PWP) | 24 |
2000 | LARGE T&R |
PT70451 |
TPS70451 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 |
| TPS70451PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS70451PWP |
TPS70451PWP |
| TPS70451PWPG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS70451PWPG4 |
TPS70451PWPG4 |
| TPS70451PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS70451PWPR |
TPS70451PWPR |
| TPS70451PWPRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS70451PWPRG4 |
TPS70451PWPRG4 |
TPS70451 应用技术支持与电子电路设计开发资源下载
- TPS70451 数据资料 dataSheet 下载.PDF
- TI 德州仪器LDO低压差线性稳压器驱动器选型与价格参考 . 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)
- LDO PSRR Measurement Simplified
(PDF 140 KB)
- LDO Noise Demystified
(PDF 782 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)
TPS70451 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS70451 评估模块 |
TPS70451EVM |
Texas Instruments |
开发电路板/EVM |
| 采用 5 条或 6 条引线 SOT23 (DBV) 封装与大多数正输出 LDO 稳压器兼容的 DEM-SOT23LDO |
DEM-SOT23LDO |
Texas Instruments |
开发电路板/EVM |
