MC33063A
MC34063A
www.ti.com
SLLS636L –DECEMBER 2004–REVISED DECEMBER 2009
Absolute Maximum Ratings(1)
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
40
UNIT
V
VCC
Supply voltage
VIR
Comparator Inverting Input voltage range
Switch Collector voltage
Switch Emitter voltage
–0.3
40
V
VC(switch)
VE(switch)
VCE(switch)
VC(driver)
IC(driver)
ISW
40
V
VPIN1 = 40 V
40
V
Switch Collector to Switch Emitter voltage
Driver Collector voltage
Driver Collector current
40
V
40
V
100
1.5
97
mA
A
Switch current
D package
DRJ package
P package
θJA
Package thermal impedance(2) (3)
41
°C/W
85
TJ
Operating virtual junction temperature
Storage temperature range
150
150
°C
°C
Tstg
–65
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
(3) The package thermal impedance is calculated in accordance with JESD 51-7.
Recommended Operating Conditions
MIN
3
MAX UNIT
VCC
TA
Supply voltage
40
85
70
V
MC33063A
MC34063A
–40
0
Operating free-air temperature
°C
Electrical Characteristics
VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram)
Oscillator
PARAMETER
Oscillator frequency
Charge current
TEST CONDITIONS
VPIN5 = 0 V, CT = 1 nF
VCC = 5 V to 40 V
VCC = 5 V to 40 V
VPIN7 = VCC
TA
MIN
24
TYP
MAX UNIT
fosc
25°C
25°C
25°C
25°C
25°C
33
35
42
42
kHz
μA
Ichg
24
Idischg
Discharge current
140
5.2
250
220
6.5
300
260
7.5
350
μA
Idischg/Ichg Discharge-to-charge current ratio
VIpk Current-limit sense voltage
Idischg = Ichg
mV
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