TPS70345 双路输出低压降 (LDO) 稳压器

TPS70345 描述

The TPS703xx family of devices is designed to provide a complete power management solution for TI DSP, processor power, ASIC, FPGA, and digital applications where dual output voltage regulators are required. Easy programmability of the sequencing function makes this family ideal for any TI DSP application with power sequencing requirements. Differentiated features, such as accuracy, fast transient response, SVS supervisory circuit (power-on reset), manual reset inputs, and enable function, provide a complete system solution. The TPS703xx family of voltage regulators offers very low dropout voltage and dual outputs with power up sequence control, designed primarily for DSP applications. These devices have 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 uF low ESR capacitors

	TPS70302	TPS70345	TPS70348	TPS70351	TPS70358
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

TPS70345 特性

• Dual Output Voltages for Split-Supply Applications
• Independent Enable Functions (See Part Number TPS704xx
  for Independent Enabling of Each Output)
• Output Current Range of 1 A on Regulator 1 and 2A 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
• Ultralow 185 uA (typ) Quiescent Current
• 2 uA Input Current During Standby
• Low Noise: 78 uVRMS Without Bypass Capacitor
• Quick Output Capacitor Discharge Feature
• Two Manual Reset Inputs
• 2% Accuracy Over Load and Temperature
• Undervoltage Lockout (UVLO) Feature
• 24-Pin PowerPADTM TSSOP Package
• Thermal Shutdown Protection

TPS70345 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
TPS70345PWP	ACTIVE	-40 to 125	2.55 | 1ku	HTSSOP (PWP) | 24	60 | TUBE	PT70345
TPS70345PWPG4	ACTIVE	-40 to 125	2.55 | 1ku	HTSSOP (PWP) | 24	60 | TUBE	PT70345
TPS70345PWPR	ACTIVE	-40 to 125	2.35 | 1ku	HTSSOP (PWP) | 24	2000 | LARGE T&R	PT70345
TPS70345PWPRG4	ACTIVE	-40 to 125	2.35 | 1ku	HTSSOP (PWP) | 24	2000 | LARGE T&R	PT70345

TPS70345 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
TPS70345PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS70345PWP	TPS70345PWP
TPS70345PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS70345PWPG4	TPS70345PWPG4
TPS70345PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS70345PWPR	TPS70345PWPR
TPS70345PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	TPS70345PWPRG4	TPS70345PWPRG4

TPS70345 应用技术支持与电子电路设计开发资源下载

1. TPS70345 数据资料 dataSheet 下载.PDF
2. 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
3. Dual MOSFET Driver (PDF 498 KB)
4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
5. LDO PSRR Measurement Simplified (PDF 140 KB)
6. LDO Noise Demystified (PDF 782 KB)
7. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
9. 所选封装材料的热学和电学性质 (PDF 645 KB)
10. 高速数据转换 (PDF 1967 KB)

TPS70345 工具与软件

名称	型号	公司	工具/软件类型
TPS70345EVM-165 评估模块	TPS70345EVM-165	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