MC34063A/MC33063A
2
Absolute Maximum Ratings
Electrical Characteristics
(VCC = 5.0V, TA = 0°C to +70°C for the MC34063, TA= -40°C to the +85°C for the MC33063, unless otherwise
specified)
Note :
Output switch tests are performed under pulsed conditions to minimize power dissipation
Parameter Symbol Value Unit
Supply Voltage VCC 40 V
Comparator Input Voltage Range VI(COMP) - 0.3 ~ + 40 V
Switch Collector Voltage VC(SW) 40 V
Switch Emitter Voltage VE(SW) 40 V
Switch Collector To Emitter Voltage VCE(SW) 40 V
Driver Collector Voltage VC(DR) 40 V
Switch Current ISW 1.5 A
Storage Temperature Range TSTG - 65 ~ + 150 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
OSCILLATOR
Charging Current ICHG VCC = 5 to 40V
TA = 25°C22 31 42 µA
Discharging Current IDISCHG VCC = 5 to 40V
TA = 25°C140 190 260 µA
Oscillator Amplitude V(OSC) TA = 25°C-0.5-V
Discharge To Charge Current Ratio K V7 = VCC , TA = 25°C 5.2 6.1 7.5 -
Current Limit Sense
Voltage VSENSE(C.L) ICHG = IDISCHG
TA = 25°C250 300 350 mV
OUTPUT SWITCH
Saturation Voltage 1 (Note) VCE(SAT)1 ISW = 1.0A
VC(driver) = VC(SW) - 0.95 1.3 V
Saturation Voltage 2 (Note) VCE(SAT)2 ISW = 1.0A,
VC(driver) = 50mA - 0.45 0.7 V
DC Current Gain (Note) GI(DC) ISW = 1.0A,
VCE = 5.0V, TA = 25°C50 180 - -
Collector off State Current (Note) IC(OFF) VCE = 40V, TA = 25°C - 0.01 100 µA
COMPARATOR
Threshold Voltage VTH - 1.21 1.24 1.29 V
Threshold Voltage Line Regulation ∆VTH VCC = 3 to 40V - 2.0 5.0 mV
Input Bias Current IBIAS VI = 0V - 50 400 nA
TOTAL DEVICE
Supply Current
MC34063 ICC
VCC = 5 to 40V
CT = 0.001uF
V7 = VCC, V5>VTH
pin2 = GND
--4.0
mA
MC33063 --5.0