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參數(shù)資料
| 型號： | LTC1928-5 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Doubler Charge Pump with Low Noise Linear Regulator in ThinSOT |
| 中文描述： | 倍增器電荷泵采用ThinSOT低噪聲線性穩(wěn)壓器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 157K |
| 代理商： | LTC1928-5 |
1
LTC1928-5
, LTC and LT are registered trademarks of Linear Technology Corporation
ThinSOT is a trademark of Linear Technology Corporation.
FEATURES
APPLICATIU
DESCRIPTIOU
The LTC
1928-5 is a doubler charge pump with an internal
low noise, low dropout (LDO) linear regulator. The part is
designed to provide a low noise boosted supply voltage for
powering noise sensitive devices such as high frequency
VCOs in wireless applications.
An internal charge pump converts a 2.7V to 4.4V input to
a boosted output, while the internal LDO regulator con-
verts the boosted voltage to a low noise regulated output.
The regulator is capable of supplying up to 30mA of output
current. Shutdown reduces the supply current to <8
μ
A,
removes the load from V
IN
by disabling the regulator and
discharges V
OUT
to ground through a 200
switch.
The LTC1928-5 LDO regulator is stable with only 2
μ
F on
the output. Small ceramic capacitors can be used, reduc-
ing PC board area.
The LTC1928-5 is short-circuit and overtemperature pro-
tected. The part is available in a 6-pin low profile
(1mm)ThinSOT package.
TYPICAL APPLICATIO
N
U
I
Low Output Noise: 90
μ
V
RMS
(100kHz BW)
I
Fixed Output Voltage: 5V
I
Input Voltage Range: 2.7V to 4.4V
I
No Inductors Required
I
Uses Small Ceramic Capacitors
I
Output Current Up to 30mA
I
550kHz Switching Frequency
I
Low Operating Current: 190
μ
A
I
Low Shutdown Current: 4
μ
A
I
Internal Thermal Shutdown and Current Limiting
I
Low Profile (1mm) ThinSOT
TM
Package
I
VCO Power Supplies for Cellular Phones
I
2-Way Pagers
I
Wireless PCMCIA Cards
I
Portable Medical Instruments
I
Low Power Data Acquisition
I
Remote Transmitters
I
White LED Drivers
I
GaAs Switches
Figure 1. Low Noise 5V Power Supply
Doubler Charge Pump with
Low Noise Linear Regulator
in ThinSOT
Output Noise (BW = 10Hz to 2.5MHz)
V
OUT
200
μ
V/DIV
C
CPO
= C
= 4.7
μ
F
I
OUT
= 10mA
V
IN
= 3V
V
OUT
= 5V
T
A
°
C
100
μ
s/DIV
19285 TA01
1
5
6
3
4
2
V
OUT
CPO
GND
V
IN
2.7V TO 4.4V
V
IN
CP
CN/SHDN
5V
4.7
μ
F
0.47
μ
F
4.7
μ
F
4.7
μ
F
19285 F01
V
OUT
LTC1928-5
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1928ES6-5#PBF | 制造商:Linear Technology 功能描述:Charge Pump STPUP 5V 30mA 6-Pin TSOT-23 |
| LTC1928ES6-5#TR | 功能描述:IC REG SWITCHED CAP DBL SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1928ES6-5#TRM | 功能描述:IC REG SWITCHED CAP DBL SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1928ES6-5#TRMPBF | 功能描述:IC REG SWITCHED CAP DBL SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1928ES6-5#TRPBF | 功能描述:IC REG SWITCHED CAP DBL SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
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