TK71740S

更新时间： 2024-11-18 22:53:03

品牌	Logo	应用领域
TOKO		稳压器
页数	文件大小	规格书
13页	153K
描述
LOW DROPOUT VOLTAGE REGULATOR

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中文翻译

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数据手册

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TK71740S 数据手册

TK717xxS

LOW DROPOUT VOLTAGE REGULATOR

APPLICATIONS

FEATURES

n BatteryPoweredSystems

n Very Good Stability (CL = 0.22 mF is Stable For

Any Type Capacitor withV_OUT³ 1.8 V)

n MeasurementSystems

n Built-in Shunt Circuit of Output to GND. The Stored

n MobileCommunicationsSystems

n Cordless Phone, PHS, GSM, CDMA

n IndustrialEquipment

Energy of the Output Capacitor is Discharged

Quickly

n Wide Operating Voltage Range (1.8 V ~ 14 V)

n PersonalComputers,BarcodeReaders

n Very Low Dropout Voltage (V_DROP= 103 mV at

low quiescent current of 72 mA at no load and 0.8 mA with

a 50 mA load. The standby current is typically 100 pA. The

circuitfeaturesverygoodstability.Theripplerejectionis90

dB at 400 Hz and 80 dB at 1 kHz. Stable operation is

achieved with an output capacitor as low as 0.22 mF; a

capacitorofanytypemaybeused.(However,thelargerthe

outputcapacitoris,thebettertheoverallcharacteristicswill

be.)

100mA)

n Peak Output Current is 370 mA (0.3 V DROP Point)

n Very Low Quiescent Current (I_Q= 72 uA at I_OUT= 0 mA)

n Good Ripple Rejection Ratio (80 dB at 1 kHz)

n High Precision Output Voltage (± 1.5 % or ± 50 mV)

n Suitable for Very Low Noise Applications

n Built-in Active High On/Off Control (0.1 mA Max

StandbyCurrent)

TheTK717xxSisavailableinaverysmallSOT23-5surface

mountpackage.

n Built-in Short Circuit Protection

n Built-in Thermal Shutdown

n Very Small Surface Mount Package (SOT23-5)

TK717xxS

DESCRIPTION

OUT

TK717xxS is a low dropout linear regulator with a built-in

electronic switch. The internal switch can be controlled by

TTL or CMOS logic levels. The device is in the ON state

whenthecontrolpinispulledtoalogichighlevel.IntheOFF

state, the output impedance becomes very low, quickly

dischargingtheoutputcapacitor.Anexternalcapacitorcan

be connected to the noise bypass pin to lower the output

noiselevelto30~50mV_RMS.AninternalPNPpasstransistor

is included to achieve a low dropout voltage of 103 mV at

100 mA load current. The TK717xx has an exceptionally

GND

CONTROL

NOISE

BYPASS

BLOCKDIAGRAM

ORDERING INFORMATION

TK717

S L

OUT

CONTROL CIRCUIT

Voltage Code

Package Code

Tape/Reel Code

CONTROL

CONSTANT

CURRENT

SOURCE

Operating Temp. Range

THERMAL &

OVER CURRENT

PROTECTION

BANDGAP

REFERENCE

VOLTAGE CODE

TAPE/REEL CODE

L: Tape Left

15 = 1.5 V 24 = 2.4 V 33 = 3.3 V 42 = 4.2 V

16 = 1.6 V 25 = 2.5 V 34 = 3.4 V 43 = 4.3 V

17 = 1.7 V 26 = 2.6 V 35 = 3.5 V 44 = 4.4 V

18 = 1.8 V 27 = 2.7 V 36 = 3.6 V 45 = 4.5 V

19 = 1.9 V 28 = 2.8 V 37 = 3.7 V 46 = 4.6 V

20 = 2.0 V 29 = 2.9 V 38 = 3.8 V 47 = 4.7 V

21 = 2.1 V 30 = 3.0 V 39 = 3.9 V 48 = 4.8 V

22 = 2.2 V 31 = 3.1 V 40 = 4.0 V 49 = 4.9 V

23 = 2.3 V 32 = 3.2 V 41 = 4.1 V 50 = 5.0 V

AUTO

DISCHARGE

CIRCUIT

OPERATING TEMP. RANGE

C: -30 ~ 80°C

NOISE

BYPASS

GND

PACKAGE CODE

S: SOT23-5

October 2001 TOKO, Inc.

Page1

12 3 4 5 6 7...13

中文翻译

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与TK71740S相关器件

型号	品牌	获取价格	描述	数据表
TK71740SCL	TOKO	获取价格	LOW DROPOUT VOLTAGE REGULATOR
TK71740SCL/40	TOKO	获取价格	LOW DROPOUT VOLTAGE REGULATOR
TK71740SCL-G	TOKO	获取价格	Regulator,
TK71740SCLN	TOKO	获取价格	暂无描述
TK71740SIL	TOKO	获取价格	Fixed Positive LDO Regulator, 4V, 0.35V Dropout, BIPolar, PDSO5, PLASTIC, SOT-23, 5 PIN
TK71740SIL	AKM	获取价格	Regulator
TK71740SIL-G	TOKO	获取价格	暂无描述
TK71741	TOKO	获取价格	LOW DROPOUT VOLTAGE REGULATOR
TK71741S	TOKO	获取价格	LOW DROPOUT VOLTAGE REGULATOR
TK71741SCL	TOKO	获取价格	LOW DROPOUT VOLTAGE REGULATOR

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