Datasheet > TCM851

TCM851

更新时间： 2024-11-24 22:42:23

品牌	Logo	应用领域
TELCOM		/
页数	文件大小	规格书
7页	77K
描述
REGULATED GaAs FET BIAS SUPPLY

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中文翻译

获取价格

数据手册

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TCM851 数据手册

TCM850

TCM851

TCM852

TCM853

EVALUATION

KIT

AVAILABLE

REGULATED GaAs FET BIAS SUPPLY

FEATURES

GENERAL DESCRIPTION

■ Fixed – 4.1V or Adjustable – 0.5V to – 9V Output

at 5mA

■ 4.5V to 10V Input Voltage Range

■ Low Output Voltage Ripple

The TCM850/1/2/3 combines an inverting charge pump

and a low noise linear regulator in a single small outline

package. They are ideal for biasing GaAS FETs in cellular

telephone transmitter power amplifiers

All four devices accept a range of input voltages from

4.5Vto10.0Vandhave–5mAoutputcurrentcapability. The

TCM850/1/2 have both preset (– 4.1V) and variable (– 0.5V

to –9.0V) output voltages that program with an external

resistor divider. The TCM853 output voltage programs with

an external positive control voltage. The TCM850/1/3 can

be shutdown reducing quiescent current to less than

0.5µA (typ) over temperature, 2µA (typ) for the TCM851.

TCM850-852 .............................................. 2mVp-p

TCM853...................................................... 1mVp-p

■ 100kHz Charge Pump Switching Frequency

■ Optional External Synchronizing Clock

Input (TCM852)

■ Logic Level Shutdown Mode ................ 0.5µA Typ.

Temperature (TCM850/852/853)

■ Low Cost, 8-Pin SOIC Package

ORDERING INFORMATION

APPLICATIONS

Part No.

Package

Temp. Range

■ Cellular Phones

TCM850COA

TCM850EOA

TCM851COA

TCM851EOA

8-Pin SOIC

0°C to +70°C

– 40°C to +85°C

0°C to +70°C

■ Negative Regulated Power Supplies

■ LCD Bias Contrast Control

■ Adjustable GaAs FET Bias

■ Wireless Data Loggers

– 40°C to +85°C

TCM852COA

TCM852EOA

TCM853COA

TCM853EOA

TCM850EV

8-Pin SOIC

0°C to +70°C

– 40°C to +85°C

0°C to +70°C

– 40°C to +85°C

Evaluation Kit for

TCM850/1/2/3

FUNCTIONAL BLOCK DIAGRAM

C₁⁺

CHARGE

PUMP

CHARGE

PUMP

C₁

C₁^–

C₃

C₁^–

C₃

TCM850

TCM851

TCM852

TCM853

NEGOUT

C₂

OUT

C₄

NEGOUT

C₂

OUT

C₄

SHDN (TCM850)

SHDN (TCM851)

OSC (TCM852)

SHDN

–

(GND to SET

–

V_OUT= – 4.1V)

CONT

– 1.28V

REF

(CONTROL VOLTAGE)

GND

Figure 1.

TC850/1/2/3-3 10/1/96

TELCOM SEMICONDUCTOR, INC.

4-27

12 3 4 5 6 7

中文翻译

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与TCM851相关器件

型号	品牌	获取价格	描述	数据表
TCM851COA	TELCOM	获取价格	REGULATED GaAs FET BIAS SUPPLY
TCM851COA723	MICROCHIP	获取价格	SWITCHED CAPACITOR CONVERTER, 100 kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
TCM851COATR	MICROCHIP	获取价格	SWITCHED CAPACITOR CONVERTER, 120 kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
TCM851EOA	TELCOM	获取价格	REGULATED GaAs FET BIAS SUPPLY
TCM851EOA713	MICROCHIP	获取价格	Switched Capacitor Converter, 100kHz Switching Freq-Max, PDSO8, SO-8
TCM851EOA723	MICROCHIP	获取价格	Switched Capacitor Converter, 100kHz Switching Freq-Max, PDSO8, SO-8
TCM851EOATR	MICROCHIP	获取价格	SWITCHED CAPACITOR CONVERTER, 120 kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
TCM852	TELCOM	获取价格	REGULATED GaAs FET BIAS SUPPLY
TCM852COA	TELCOM	获取价格	REGULATED GaAs FET BIAS SUPPLY
TCM852COA723	MICROCHIP	获取价格	Switched Capacitor Converter, 100kHz Switching Freq-Max, PDSO8, SO-8

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