REG102

更新时间： 2024-09-15 22:24:11

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
19页	341K
描述
DMOS 250mA Low-Dropout Regulator

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REG102 数据手册

REG102

SBVS024E – NOVEMBER 2000 – REVISED MARCH 2003

DMOS

250mA Low-Dropout Regulator

DESCRIPTION

FEATURES

The REG102 is a family of low-noise, low-dropout linear

regulators with low ground pin current. The new DMOS

topology provides significant improvement over previous

designs, including low-dropout voltage (only 150mV 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:

150mV typ at 250mA

Output Capacitor not Required for Stability

● FAST TRANSIENT RESPONSE

●

VERY LOW NOISE: 28µVrms

● HIGH ACCURACY: ±1.5% max

● HIGH EFFICIENCY:

Typical ground pin current is only 600µA (at I_OUT= 250mA)

and drops to 10nA when not enabled. Unlike regulators with

PNP pass devices, quiescent current remains relatively con-

stant over load variations and under dropout conditions.

I_GND= 600µA at I_OUT= 250mA

Not Enabled: I_GND= 0.01µA

● 2.5V, 2.8V, 2.85V, 3.0V, 3.3V, AND 5.0V

ADJUSTABLE OUTPUT VERSIONS

The REG102 has very low output noise (typically 28µVrms

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 pa-

rameters are tested over the specified temperature range

(–40°C to +85°C).

● OTHER OUTPUT VOLTAGES AVAILABLE UPON

REQUEST

● FOLDBACK CURRENT LIMIT

● THERMAL PROTECTION

● SMALL SURFACE-MOUNT PACKAGES:

SOT23-5, SOT223-5, and SO-8

The REG102 is well protected—internal circuitry provides a

current limit that protects the load from damage; furthermore,

thermal protection circuitry keeps the chip from being dam-

aged by excessive temperature. The REG102 is available in

SOT23-5, SOT223-5, and SO-8 packages.

APPLICATIONS

● PORTABLE COMMUNICATION DEVICES

● BATTERY-POWERED EQUIPMENT

● PERSONAL DIGITAL ASSISTANTS

● MODEMS

● BAR-CODE SCANNERS

● BACKUP POWER SUPPLIES

Enable

V_OUT

V_IN

V_OUT

V_IN

REG102

(Fixed Voltage

Versions)

R₁

Adj

R₂

0.1µF

(1)

C_OUT

REG102-A

C_OUT

0.1µF

GND

NOTE: (1) Optional.

NR = Noise Reduction

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.

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

12 3 4 5 6 7...19

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REG102 替代型号

型号	品牌	替代类型	描述	数据表
REG103	TI	功能相似	DMOS 500mA Low-Dropout Regulator
REG104	TI	功能相似	DMOS 1A Low-Dropout Regulator
REG101	TI	功能相似	DMOS 100mA Low-Dropout Regulator

与REG102相关器件

型号	品牌	获取价格	描述	数据表
REG102_07	BB	获取价格	DMOS 250mA Low-Dropout Regulator
REG102_08	BB	获取价格	DMOS 250mA Low-Dropout Regulator
REG102-25	TI	获取价格	250mA Low-Dropout Regulator
REG102-28	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102-285	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102-3	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102-33	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102-5	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102-A	ETC	获取价格	DMOS 250 mA Low Dropout (LDO) Regulator
REG102GA-2.5	TI	获取价格	DMOS 250mA Low-Dropout Regulator

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