TK65133

更新时间： 2024-11-11 22:32:35

品牌	Logo	应用领域
TOKO		转换器监控监视器升压转换器
页数	文件大小	规格书
20页	142K
描述
STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR

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TK65133 数据手册

TK651xx

STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR

APPLICATIONS

FEATURES

■ Battery Powered Systems

■ Cellular Telephones

■ Guaranteed 0.9 V Operation

■ Very Low Quiescent Current

■ Internal Bandgap Reference

■ High Efficiency MOS Switching

■ Low Output Ripple

■ Pagers

■ Personal Communications Equipment

■ Portable Instrumentation

■ Portable Consumer Equipment

■ Radio Control Systems

■ Microprocessor Reset Output

■ Laser-Trimmed Output Voltage

■ Laser-Trimmed Oscillator

■ Undervoltage Lockout

■ Regulation by Pulse Burst Modulation (PBM)

DESCRIPTION

pulses which can be seen at the SW pin of the IC. Special

care should be taken to achieve reliability through the use

of Oxide, double Nitride passivation. The TK651xx is

available in a miniature 6-pin SOT-23L-6 surface mount

package.

The TK651xx low power step-up DC-DC converter is

designed for portable battery powered systems, capable

of operating from a single battery cell down to 0.9 V. The

TK651xx provides the power switch and the control circuit

for a boost converter. The converter takes a DC input and

boosts it up to a regulated 2.7, 3.0 or 3.3 V output .

Customized levels of accuracy in oscillator frequency and

output voltage are available.

Theoutputvoltageislaser-trimmed.ALowOutputIndicator

detector(LOI)monitorstheoutputvoltageandprovidesan

active low microprocessor reset signal whenever the

output voltage falls below an internally preset limit. An

internal Undervoltage Lockout (UVLO) circuit is utilized to

prevent the inductor switch from remaining in the “on”

mode when the battery voltage is too low to permit normal

operation.PulseBurstModulation(PBM)isusedtoregulate

the voltage at the V_OUTpin of the IC. PBM is the process

in which an oscillator signal is gated or not gated to the

switch drive each period. The decision is made just before

the start of each cycle and is based on comparing the

output voltage to an internally-generated bandgap

reference. The decision is latched, so the duty ratio is not

modulated within a cycle. The average duty ratio is

effectively modulated by the “bursting” and skipping of

TK651xx

LOI

20P

GND

OUT

BLOCK DIAGRAM

OUT

Vref

UVLO

ORDERING INFORMATION

TK651xxM

CONTROL

CIRCUIT

LOI

Tape/Reel Code

Voltage Code

OSCILLATOR

TAPE/REEL CODE

VOLTAGE CODE

27 = 2.7 V

TL: Tape Left

30 = 3.0 V

GND

33 = 3.3 V

January 1999 TOKO, Inc.

Page 1

12 3 4 5 6 7...20

中文翻译

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与TK65133相关器件

型号	品牌	获取价格	描述	数据表
TK65133M	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65133MTL	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65133MTL/33M	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK651XX	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65218	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65218M	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65218MTL	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65218MTL/18M	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65221	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR
TK65221M	TOKO	获取价格	STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR

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