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PDF ( 数据手册 , 数据表 ) MC34063CN

零件编号 MC34063CN
描述 Step Down / Step Up / Inverting DC-DC Converter
制造商 HTC
LOGO HTC LOGO 


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MC34063CN 数据手册, 描述, 功能
Step Down / Step Up / Inverting DC-DC Converter MC34063C
FEATURES
z Operating from 3V to 40V
z Low Standby Current
z Current Limiting
z Output Switch Current to 1.2A
z Output Voltage Adjustable
z Operation Frequency up to 180kHz (CT=100pF)
z Precision 2% Reference
z Available in SOP-8 and DIP-8 Packages
z Moisture Sensitivity Level 3 for SMD Package
SOP-8 PKG
DIP-8 PKG
APPLICATION
z Battery Chargers
z NICs / Switches / Hubs
z ADSL Modems
z Negative Voltage Power Supplies
ORDERING INFORMATION
Device
MC34063CD
MC34063CN
Package
SOP-8
DIP-8
DESCRIPTION
The 34063C is a monolithic switching regulator control circuit containing the primary functions required for
DC-DC converters. This device consists of internal temperature compensated reference, voltage comparator,
controlled duty cycle oscillator with active current limit circuit, driver and high current output switch. The device
is specifically designed to be used in Step-Down, Step-Up and Voltage-Inverting applications with a minimum
number of external components.
The MC34063C is the enhanced version of MC34063A/B with the ability to work in higher frequency.
Absolute Maximum Ratings (Note 1)
CHARACTERISTIC
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage (VSWC=40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current (Note 2)
Switch Current
SYMBOL
VCC
VIR
VSWC
VSWE
VCE
Vdc
Idc
ISW
MIN.
-
-0.3
-
-
-
-
-
-
MAX.
40
40
40
40
40
40
100
1.2
UNIT
V
V
V
V
V
V
mA
A
Apr. 2011 - Rev.1.2
-1 -
HTC







MC34063CN pdf, 数据表
Step Down / Step Up / Inverting DC-DC Converter MC34063C
Step-Up with External NPN Switch
RSC
VIN
8
SQ
R
Q2 1
Q1
7
IPK
Oscillator
6
Comparator
+
-
1.25V
Reference
Regulator
5
2
3
4
VOUT
+
Step-Down with External PNP Switch
RSC
VIN
8
SQ
R
Q2 1
Q1
7
IPK
Oscillator
6
Comparator
+
-
1.25V
Reference
Regulator
5
2
3
4
Apr. 2011 - Rev.1.2
-8 -
VOUT
+
HTC














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