Datasheet > MC33680

MC33680

更新时间： 2024-11-17 22:13:35

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器电子
页数	文件大小	规格书
16页	343K
描述
Dual DC-DC Regulator for Electronic Organizer

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中文翻译

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数据手册

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MC33680 数据手册

The MC33680 is a dual DC–DC regulator designed for electronic

organizer applications. Both regulators apply

Pulse–Frequency–Modulation (PFM). The main step–up regulator

output can be externally adjusted from 2.7V to 5V. An internal

synchronous rectifier is used to ensure high efficiency (achieve 87%).

The auxiliary regulator with a built–in power transistor can be

configured to produce a wide range of positive voltage (can be used

for LCD contrast voltage). This voltage can be adjusted from +5V to

+25V by an external potentiometer.

http://onsemi.com

The MC33680 has been designed for battery powered hand–held

products. With the low start–up voltage from 1V and the low quiescent

current (typical 35 µA); the MC33680 is best suited to operate from 1

to 2 AA/ AAA cell. Moreover, supervisory functions such as low

battery detection, CPU Power–Good signal, and back–up battery

control, for lithium battery or supercap are also included in the chip.

32–LEAD LQFP

FTB SUFFIX

CASE 873A

PIN CONNECTIONS &

DEVICE MARKING

FEATURES:

• Low Input Voltage, 1V up

• Low Quiescent Current in Standby Mode: 35µA typical

• PFM and Synchronous Rectification to ensure high efficiency

(87% @60mA Load)

VAUXSW

VAUXEMR

LIBATIN

LIBATOUT

VMAINGND

VMAINSW

VMAIN

• Adjustable Main Output: +2.7V to +5V

nominal 3.3V @ 100mA max, with 1.8V input

• Auxiliary Output Voltage: +5V to +25V

+5V @ 25mA max, with 1.8V input

+25V @ 15mA max, with 1.8V input

• Current Limit Protection

DGND

MC33680

LIBATCL

LIBATON

LOWBATB

PORB

FTB

AWLYYWW

DGND

LOWBATSEN

• Power–Good Signal with Programmable Delay

• Battery Low Detection

• Lithium Battery or Supercap Back–up

• 32–Pin LQFP Package

(Top View)

APPLICATIONS:

• Digital Organizer and Dictionary

• Dual Output Power Supply (For MPU, Logic, Memory, LCD)

• Handheld Battery Powered Device (1–2 AA/AAA cell)

ORDERING INFORMATION

Device

Package

Shipping

MC33680FTB

LQFP

1250 Tray / Drypack

1800 / Tape & Reel

MC33680FTBR2

LQFP

Semiconductor Components Industries, LLC, 2000

Publication Order Number:

May, 2000 – Rev. 3

MC33680/D

12 3 4 5 6 7...16

中文翻译

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与MC33680相关器件

型号	品牌	获取价格	描述	数据表
MC33680_06	ONSEMI	获取价格	Dual DC−DC Regulator for Electronic Organizer
MC33680FTB	ONSEMI	获取价格	Dual DC-DC Regulator for Electronic Organizer
MC33680FTBR2	ONSEMI	获取价格	Dual DC-DC Regulator for Electronic Organizer
MC33689	MOTOROLA	获取价格	System Basis Chip with LIN transceiver
MC33689DDWB	FREESCALE	获取价格	System Basis Chip with LIN Transceiver
MC33689DDWBR2	FREESCALE	获取价格	System Basis Chip with LIN Transceiver
MC33689DDWBR2	NXP	获取价格	LINE TRANSCEIVER, PDSO32, 0.65 MM PITCH, PLASTIC, SOIC-32
MC33689DEW	NXP	获取价格	LINE TRANSCEIVER, PDSO32, 0.65 MM PITCH, LEAD FREE, PLASTIC, SOIC-32
MC33689DEWR2	NXP	获取价格	LINE TRANSCEIVER, PDSO32, 0.65 MM PITCH, LEAD FREE, PLASTIC, SOIC-32
MC33689DPEW	NXP	获取价格	System Basis Chip, LIN, 3x 5.0V/50mA LDOs, SOIC 32, Rail

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