Datasheet > REG103UA-3.3/2K5G4

REG103UA-3.3/2K5G4

更新时间： 2024-11-13 11:58:19

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
26页	937K
描述
500mA Low-Dropout Regulator

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REG103

SBVS010D – JANUARY 2000 – REVISED SEPTEMBER 2005

DMOS

500mA Low-Dropout Regulator

DESCRIPTION

FEATURES

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.

● 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:

I_GND= 1mA at I_OUT= 500mA

Not Enabled: I_GND= 0.5µA

● 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE

Typical ground pin current is only 1mA (at I_OUT= 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.

OUTPUT VERSIONS

The REG103 has very low output noise (typically 33µVrms

for V_OUT= 3.3V with C_NR= 0.01µF), making it ideal for use

in portable communications equipment. On-chip trimming

results in high output voltage accuracy. Accuracy is main-

tained over temperature, line, and load variations. Key

parameters are tested over the specified temperature range

(–40°C to +85°C).

● FOLDBACK CURRENT LIMIT

● THERMAL PROTECTION

● OUTPUT VOLTAGE ERROR INDICATOR⁽¹⁾

● SMALL SURFACE-MOUNT PACKAGES:

SOT223-5, DDPAK-5, SO-8

The SO-8 version of the REG103 has an ERROR pin that

provides a power good flag, indicating the regulator is in

regulation. The REG103 is well protected—internal cir-

cuitry provides a current limit that protects the load from

damage. Thermal protection circuitry keeps the chip from

being damaged by excessive temperature. In addition to the

SO-8 package, the REG103 is also available in the DDPAK

and the SOT223-5.

APPLICATIONS

● PORTABLE COMMUNICATION DEVICES

● BATTERY-POWERED EQUIPMENT

● PERSONAL DIGITAL ASSISTANTS

● MODEMS

● BAR-CODE SCANNERS

● BACKUP POWER SUPPLIES

ENABLE ERROR⁽¹⁾

ERROR¹⁾

ENABLE

V_OUT

V_IN

V_OUT

V_IN

REG103

(Fixed Voltage

Versions)

R₁

Adj

R₂

0.1µF

(2)

C_OUT

REG103-A

C_OUT

0.1µF

Gnd

NR = Noise Reduction

NOTE: (1) SO-8 Package Only. (2) Optional.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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REG103UA-3.3/2K5G4 替代型号

型号	品牌	替代类型	描述	数据表
REG103UA-3.3/2K5	TI	完全替代	500mA Low-Dropout Regulator
REG103UA-3.3G4	TI	类似代替	500mA Low-Dropout Regulator
REG103UA-3.3	TI	类似代替	500mA Low-Dropout Regulator

与REG103UA-3.3/2K5G4相关器件

型号	品牌	获取价格	描述	数据表
REG103UA-3.3G4	TI	获取价格	500mA Low-Dropout Regulator
REG103UA-3.3G4	BB	获取价格	DMOS 500mA Low-Dropout Regulator
REG103UA-3/2K5	BB	获取价格	DMOS 500mA Low Dropout Regulator
REG103UA-3/2K5	ROCHESTER	获取价格	3V FIXED POSITIVE LDO REGULATOR, 0.2V DROPOUT, PDSO8, GREEN, PLASTIC, MS-012AA, SOIC-8
REG103UA-3G4	TI	获取价格	500mA Low-Dropout Regulator
REG103UA-3G4	BB	获取价格	DMOS 500mA Low-Dropout Regulator
REG103UA-5	BB	获取价格	DMOS 500mA Low Dropout Regulator
REG103UA-5	TI	获取价格	500mA Low-Dropout Regulator
REG103UA-5/2K5	BB	获取价格	DMOS 500mA Low Dropout Regulator
REG103UA-5/2K5	TI	获取价格	500mA Low-Dropout Regulator

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