參數(shù)資料
型號(hào)： REG104FA-2.7KTTT
廠商： Texas Instruments, Inc.
英文描述： DMOS 1A Low-Dropout Regulator
中文描述： DMOS的1A低壓差穩(wěn)壓器
文件頁(yè)數(shù)： 1/22頁(yè)
文件大?。?/td> 439K
代理商： REG104FA-2.7KTTT
DMOS
1A Low-Dropout Regulator
FEATURES
G
NEW DMOS TOPOLOGY:
Ultra Low Dropout Voltage:
230mV typ at 1A and 3.3V Output
Output Capacitor NOT Required for Stability
G
FAST TRANSIENT RESPONSE
G
VERY LOW NOISE: 33
μ
V
RMS
G
HIGH ACCURACY:
±
2% max
G
HIGH EFFICIENCY:
I
GND
= 1.7mA at I
OUT
= 1A
Not Enabled: I
GND
= 0.5
μ
A
G
2.5V, 2.7V, 3.0V, 3.3V, 5.0V AND
ADJUSTABLE OUTPUT VERSIONS
G
THERMAL PROTECTION
G
SMALL SURFACE-MOUNT PACKAGES:
SOT223-5, DDPAK-5
APPLICATIONS
G
PORTABLE COMMUNICATION DEVICES
G
BATTERY-POWERED EQUIPMENT
G
MODEMS
G
BAR-CODE SCANNERS
G
BACKUP POWER SUPPLIES
DESCRIPTION
The REG104 is a family of low-noise, low-dropout linear
regulators with low ground pin current. Its new DMOS topol-
ogy provides significant improvement over previous designs,
including low dropout voltage (only 230mV 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 1
μ
F.
Typical ground pin current is only 1.7mA (at I
OUT
= 1A) and
drops to 0.5
μ
A in not enabledmode. Unlike regulators with
PNP pass devices, quiescent current remains relatively con-
stant over load variations and under dropout conditions.
The REG104 has very low output noise (typically 33
μ
V
RMS
for V
OUT
= 3.3V with C
NR
= 0.01
μ
F), 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 REG104 is well protected—internal circuitry provides a
current limit which protects the load from damage. Thermal
protection circuitry keeps the chip from being damaged by
excessive temperature. The REG104 is available in the
DDPAK-5 and the SOT223-5.
REG104
REG104
REG104
(Fixed Voltage
Versions)
Enable
Gnd
0.1
μ
F
C
OUT(1)
+
+
V
OUT
V
IN
NR
NR = Noise Reduction
NOTE: (1) Optional.
REG104-A
Gnd
Enable
0.1
μ
F
+
C
OUT(1)
+
V
OUT
V
IN
R
2
R
1
Adj
REG104
SBVS025G
–
SEPTEMBER 2001
–
REVISED SEPTEMBER 2005
www.ti.com
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 2001-2005, Texas Instruments Incorporated
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.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
REG104FA-3 制造商:Rochester Electronics LLC 功能描述:- Bulk
REG104FA-3.3 制造商:Rochester Electronics LLC 功能描述:- Bulk
REG104FA-3.3/500 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
REG104FA-3.3/500G3 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
REG104FA-3.3/KTTT 制造商:TI 制造商全稱:Texas Instruments 功能描述:DMOS 1A Low-Dropout Regulator
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