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REG102NA-2.8/250G4

产品描述5 V FIXED POSITIVE LDO REGULATOR, 0.27 V DROPOUT, PDSO8
产品类别半导体    电源管理   
文件大小544KB,共23页
制造商Burr-Brown
官网地址http://www.burr-brown.com/
下载文档 详细参数 全文预览

REG102NA-2.8/250G4概述

5 V FIXED POSITIVE LDO REGULATOR, 0.27 V DROPOUT, PDSO8

5 V 固定正电压低压差线性稳压器稳压器, 0.27 V 压差, PDSO8

REG102NA-2.8/250G4规格参数

参数名称属性值
功能数量1
端子数量8
最大输出电流0.2500 A
最大输出电压5.14 V
最小输出电压4.86 V
最大输入电压10 V
最小输入电压5.27 V
加工封装描述GREEN, PLASTIC, MS-012AA, SOIC-8
无铅Yes
欧盟RoHS规范Yes
中国RoHS规范Yes
状态ACTIVE
工艺NMOS
包装形状RECTANGULAR
包装尺寸SMALL OUTLINE
表面贴装Yes
端子形式GULL WING
端子间距1.27 mm
端子涂层NICKEL PALLADIUM GOLD
端子位置DUAL
包装材料PLASTIC/EPOXY
最大电压差0.2700 V
调节类型FIXED POSITIVE LDO REGULATOR
额定输出电压5 V

文档预览

下载PDF文档
REG
102
REG102
REG
102
SBVS024F – NOVEMBER 2000 – REVISED SEPTEMBER 2005
DMOS
250mA Low-Dropout Regulator
FEATURES
q
NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
150mV typ at 250mA
Output Capacitor
not
Required for Stability
q
FAST TRANSIENT RESPONSE
q
VERY LOW NOISE: 28
µ
Vrms
q
HIGH ACCURACY:
±
1.5% max
q
HIGH EFFICIENCY:
I
GND
= 600
µ
A at I
OUT
= 250mA
Not Enabled: I
GND
= 0.01
µ
A
q
2.5V, 2.8V, 2.85V, 3.0V, 3.3V, AND 5.0V
ADJUSTABLE OUTPUT VERSIONS
q
OTHER OUTPUT VOLTAGES AVAILABLE UPON
REQUEST
q
FOLDBACK CURRENT LIMIT
q
THERMAL PROTECTION
q
SMALL SURFACE-MOUNT PACKAGES:
SOT23-5, SOT223-5, and SO-8
DESCRIPTION
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.
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.
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).
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
q
q
q
q
q
q
PORTABLE COMMUNICATION DEVICES
BATTERY-POWERED EQUIPMENT
PERSONAL DIGITAL ASSISTANTS
MODEMS
BAR-CODE SCANNERS
BACKUP POWER SUPPLIES
Enable
V
IN
+
0.1µF
REG102
(Fixed Voltage
Versions)
GND
+
V
OUT
C
OUT(1)
V
IN
Enable
V
OUT
+
0.1µF
REG102-A
R
1
Adj
GND
NOTE: (1) Optional.
R
2
+
C
OUT(1)
NR
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.
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.
Copyright © 2000-2005, Texas Instruments Incorporated
www.ti.com
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