Datasheet > LTC1551

LTC1551

更新时间： 2024-11-07 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		开关电容器
页数	文件大小	规格书
12页	292K
描述
低噪声、开关电容器稳定电压反相器

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中文翻译

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数据手册

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LTC1551 数据手册

LTC1550/LTC1551

Low Noise, Switched

Capacitor Regulated

Voltage Inverters

FEATURES

DESCRIPTION

The LTC^®1550/LTC1551 are switched capacitor charge

pump voltage inverters which include internal linear post-

regulators to minimize output ripple. Output voltages are

■

Regulated Negative Voltage from a Single

Positive Supply

■

Low Output Ripple: Less Than 1mV_P-PTyp

■

fixed at – 4.1V, with ripple voltages typically below 1mV_P-P

High Charge Pump Frequency: 900kHz Typ

■

The LTC1550 is also available in an adjustable output

voltage version. The LTC1550/LTC1551 are ideal for use

as bias voltage generators for GaAs transmitter FETs in

portable RF and cellular telephone applications.

Small Charge Pump Capacitors: 0.1µF

■

Requires Only Four External Capacitors

■

Fixed –4.1V or Adjustable Output

■

Shutdown Mode Drops Supply Current to < 1µA

■

High Output Current: Up to 10mA, V_CC= 5V

The LTC1550/LTC1551 operate from single 4.5V to 6.5V

supplies and draw typical quiescent currents of 4.25mA

with a 5V supply. Each device includes a TTL compatible

Shutdown pin which drops supply current to 0.2µA typi-

cally. The LTC1550 Shutdown pin is active low (SHDN),

while the LTC1551 Shutdown pin is active high (SHDN).

Only four external components are required: an input bypass

capacitor, two 0.1µF charge pump capacitors and a filter

capacitoratthelinearregulatoroutput.TheadjustableLTC1550

requirestwoadditionalresistorstosettheoutputvoltage.The

LTC1550/LTC1551 will supply up to 10mA output current

with a 5V supply, while maintaining guaranteed output

regulation of ±5%.

■

Output Regulation: 5%

■

Available in SO-8 and 16-Lead SSOP

APPLICATIONS

■

GaAs FET Bias Generators

■

Negative Supply Generators

■

Battery-Powered Systems

Single Supply Applications

■

The fixed voltage LTC1550/LTC1551 are available in S0-8

plastic packages. The adjustable LTC1550 is available in a

16-pin SSOP.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATION

– 4.1V Generator with 1mV_P-PNoise

V_OUTOutput Noise and Ripple

SHDN

SENSE

OUT

4.7µF

LTC1551

0.1µF

V_OUT

AC COUPLED

2mV/DIV

GND

–

OUT

FERRITE BEAD

LOAD

= –4.1V

= 5mA

OUT

10µF

0.1µF

1550/51 F01

10µs/DIV

1550/51 TA02

12 3 4 5 6 7...12

中文翻译

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与LTC1551相关器件

型号	品牌	获取价格	描述	数据表
LTC1551_15	Linear	获取价格	Low Noise, Switched Capacitor Regulated Voltage Inverters
LTC1551CGN-4.1	ETC	获取价格	DC-to-DC Voltage Converter
LTC1551CS	Linear	获取价格	IC SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO14, 0.150 INCH, PLASTIC,
LTC1551CS-4.1	Linear	获取价格	IC SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, SO-14, Switc
LTC1551CS8#TR-4.1	Linear	获取价格	IC SWITCHED CAPACITOR REGULATOR, 900 kHz SWITCHING FREQ-MAX, PDSO8, 0.150 INCH, PLASTIC, S
LTC1551CS8-4.1	Linear	获取价格	Low Noise, Switched Capacitor Regulated Voltage Inverters
LTC1551CS8-4.1#PBF	Linear	获取价格	LTC1551 - Low Noise, Switched Capacitor-Regulated Voltage Inverters; Package: SO; Pins: 8;
LTC1551CS8-4.1#TR	Linear	获取价格	LTC1551 - Low Noise, Switched Capacitor-Regulated Voltage Inverters; Package: SO; Pins: 8;
LTC1551CS8-4.1#TRPBF	Linear	获取价格	LTC1551 - Low Noise, Switched Capacitor-Regulated Voltage Inverters; Package: SO; Pins: 8;
LTC1551L	Linear	获取价格	Low Noise, Switched Capacitor Regulated Voltage Inverters

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