MC34063AB Datasheet, PDF (1/12 Pages) STMicroelectronics – DC/DC converter control circuits

DC-DC Converter Control Circuits
FEATURES
z Output Switch Current In Excess of 1.5A
z 2% Reference Accuracy
z Low Quiescent Current : 2.5mA(Typ.)
z Operating From 3V to 40V
z Frequency Operation to 100KHz
z Active Current Limiting
z Moisture Sensitivity Level 3D
z MC34063AG is Halogen Free Products
MC34063A/B
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
MC34063AD
MC34063AGD
MC34063BD
MC34063AN
Package
SOP-8
DIP-8
DESCRIPTION
The MC34063A/B series is a monolithic control circuit delivering the main functions for DC-DC voltage
converting. The device contains an internal temperature compensated reference, comparator, duty cycle
controlled oscillator with an active current limit circuit driver and high current output switch.
Output voltage is adjustable through two external resistors with a 2% reference accuracy.
Employing a minimum number of external components the MC34063A/B devices series is designed for Step-
Down, Step-Up and Voltage-Inverting applications.
Absolute Maximum Ratings ^{(Note 1)}
CHARACTERISTIC
Power Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage(V_SWC=40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
Driver Collector Current ^{(Note 2)}
Switch Current
Jan. 2011 - Rev. 1.0
SYMBOL
V_CC
V_IR
V_SWC
V_SWE
V_CE
V_dc
I_dc
I_SW
-1 -
MIN.
-
-0.3
-
-
-
MAX.
50
40
40
40
40
40
100
1.5
UNIT
V
V
V
V
V
V
mA
A
HTC