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参数资料
| 型号： | LTC1928ES6-5#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP DBL SOT23-6 |
| 标准包装： | 2,500 |
| 类型： | 切换式电容器（充电泵），倍增器 |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 2.7 V ~ 4.4 V |
| PWM 型： | Burst Mode? |
| 频率 - 开关： | 550kHz |
| 电流 - 输出： | 30mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-6 |
LTC1928-5
Doubler Charge Pump with
Low Noise Linear Regulator
in ThinSOT
FEATURES
DESCRIPTIO
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Low Output Noise: 90 μ V RMS (100kHz BW)
Fixed Output Voltage: 5V
Input Voltage Range: 2.7V to 4.4V
No Inductors Required
Uses Small Ceramic Capacitors
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.
Output Current Up to 30mA
550kHz Switching Frequency
Low Operating Current: 190 μ A
Low Shutdown Current: 4 μ A
Internal Thermal Shutdown and Current Limiting
Low Profile (1mm) ThinSOT TM Package
VCO Power Supplies for Cellular Phones
2-Way Pagers
Wireless PCMCIA Cards
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APPLICATIO S
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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.
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Portable Medical Instruments
Low Power Data Acquisition
Remote Transmitters
White LED Drivers
GaAs Switches
The LTC1928-5 is short-circuit and overtemperature pro-
tected. The part is available in a 6-pin low profile
(1mm)ThinSOT package.
, LTC and LT are registered trademarks of Linear Technology Corporation
ThinSOT is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO N
LTC1928-5
Output Noise (BW = 10Hz to 2.5MHz)
V IN
2.7V TO 4.4V
4.7 μ F
0.47 μ F
1
5
6
V IN V OUT
CP CPO
CN/SHDN GND
3
4
2
4.7 μ F
5V
V OUT
4.7 μ F
V OUT
200 μ V/DIV
19285 F01
Figure 1. Low Noise 5V Power Supply
C CPO = C OUT = 4.7 μ F 100 μ s/DIV
19285 TA01
I OUT = 10mA
V IN = 3V
V OUT = 5V
T A = 25 ° C
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1928ES6-5TRMPBF | 制造商:Linear Technology 功能描述:Charge Pump STPUP 5V 30mA TSOT23-6 |
| LTC1929CG | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1929CG#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC1929CG#TR | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1929CG#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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