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REG103-33 单输出 LDO、500mA、固定电压 (3.3V)、低噪声、快速瞬态响应

REG103-33 描述

The REG103 is a family of low-noise, low-dropout, linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF. Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5µA in not enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions

	REG103-25	REG103-33	REG103-5	REG103-A
Iout(Max)(A)	0.5	0.5	0.5	0.5
Vdo(Typ)(mV)	115	115	160	115
Iq(Typ)(mA)	0.5	0.5	0.5	0.5
Vin(Min)(V)	2.1	2.1	2.1	2.1
Vin(Max)(V)	15	15	15	15
Vout(Min)(V)	2.5	3.3	5
Vout(Max)(V)	2.5	3.3	5
Vout Adj(Min)(V)				1.295
Vout Adj(Max)(V)				5.5
Accuracy(%)	2	2	2	2
Output Capacitor Type	Capacitor Free	Capacitor Free	Capacitor Free	Capacitor Free
Fixed Output Options(V)	2.5	3.3	5
Pin/Package	5DDPAK/TO-263, 6SOT-223, 8SOIC	5DDPAK/TO-263, 6SOT-223, 8SOIC	5DDPAK/TO-263, 6SOT-223, 8SOIC	5DDPAK/TO-263, 6SOT-223, 8SOIC
Rating	Catalog	Catalog	Catalog	Catalog
Regulated Outputs(#)	1	1	1	1

REG103-33 特性

• NEW DMOS TOPOLOGY:
  Ultra Low Dropout Voltage:
  115mV Typ at 500mA and 3.3V Output
  Output Capacitor NOT Required for Stability
• FAST TRANSIENT RESPONSE
• VERY LOW NOISE: 33µVrms
• HIGH ACCURACY: ±2% max
• HIGH EFFICIENCY:
  IGND = 1mA at IOUT = 500mA
  Not Enabled: IGND = 0.5µA
• 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE OUTPUT VERSIONS
• FOLDBACK CURRENT LIMIT
• THERMAL PROTECTION
• OUTPUT VOLTAGE ERROR INDICATOR(1)
• SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5, SO-8
• APPLICATIONS
  • PORTABLE COMMUNICATION DEVICES
  • BATTERY-POWERED EQUIPMENT
  • PERSONAL DIGITAL ASSISTANTS
  • MODEMS
  • BAR-CODE SCANNERS
  • BACKUP POWER SUPPLIES

REG103-33 芯片订购指南

器件	状态	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
REG103FA-33	OBSOLETE		DDPAK/TO-263 (KTT) | 5
REG103FA-33/500	NRND	3.70 | 1ku	DDPAK/TO-263 (KTT) | 5	500 | LARGE T&R	REG 103FA-33
REG103FA-33KTTT	ACTIVE	4.25 | 1ku	DDPAK/TO-263 (KTT) | 5	50 | SMALL T&R	REG 103FA-33
REG103FA-33KTTTG3	ACTIVE	4.25 | 1ku	DDPAK/TO-263 (KTT) | 5	50 | SMALL T&R	REG 103FA-33
REG103GA-33	ACTIVE	3.50 | 1ku	SOT-223 (DCQ) | 6	78 | TUBE	R103G33
REG103GA-33/2K5	NRND	2.90 | 1ku	SOT-223 (DCQ) | 6	2500 | LARGE T&R	R103G33
REG103GA-33/2K5G4	NRND	2.90 | 1ku	SOT-223 (DCQ) | 6	2500 | LARGE T&R	R103G33
REG103GA-33G4	ACTIVE	3.50 | 1ku	SOT-223 (DCQ) | 6	78 | TUBE	R103G33
REG103UA-33	ACTIVE	2.70 | 1ku	SOIC (D) | 8	75 | TUBE
REG103UA-33/2K5	NRND	2.25 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
REG103UA-33/2K5G4	NRND	2.25 | 1ku	SOIC (D) | 8	2500 | LARGE T&R
REG103UA-33G4	ACTIVE	2.70 | 1ku	SOIC (D) | 8	75 | TUBE

REG103-33 应用技术支持与电子电路设计开发资源下载

1. REG103-33 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)