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MC34063A View Datasheet(PDF) - Texas Instruments

Part NameMC34063A TI
Texas Instruments TI
Description1.5-A Peak Boost/Buck/Inverting Switching Regulators
MC34063A Datasheet PDF : 30 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
www.ti.com
MC33063A, MC34063A
SLLS636N – DECEMBER 2004 – REVISED JANUARY 2015
7.6 Electrical Characteristics—Output Switch
VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram)(1)
PARAMETER
TEST CONDITIONS
TA
VCE(sat)
Saturation voltage –
Darlington connection
ISW = 1 A, pins 1 and 8 connected
Full range
MIN TYP MAX UNIT
1
1.3 V
VCE(sat)
Saturation voltage –
non-Darlington connection(2)
ISW = 1 A, RPIN8 = 82 to VCC,
forced β 20
Full range
0.45
0.7 V
hFE
IC(off)
DC current gain
Collector off-state current
ISW = 1 A, VCE = 5 V
VCE = 40 V
25°C
Full range
50
75
0.01
100 μA
(1) Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible.
(2) In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents (300 mA) and high driver
currents (30 mA), it may take up to 2 μs for the switch to come out of saturation. This condition effectively shortens the off time at
frequencies 30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the non-
Darlington configuration:
Forced β of output switch = IC,SW / (IC,driver – 7 mA) 10, where 7 mA is required by the 100-resistor in the emitter of the driver to
forward bias the Vbe of the switch.
7.7 Electrical Characteristics—Comparator
VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram)
PARAMETER
TEST CONDITIONS
TA
Vth
Threshold voltage
25°C
Full range
ΔVth
Threshold-voltage line regulation
IIB
Input bias current
VCC = 5 V to 40 V
VIN = 0 V
Full range
Full range
MIN
1.225
1.21
TYP MAX UNIT
1.25 1.275
V
1.29
1.4
5 mV
–20 –400 nA
7.8 Electrical Characteristics—Total Device
VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram)
PARAMETER
TEST CONDITIONS
ICC
Supply current
VCC = 5 V to 40 V, CT = 1 nF,
VPIN7 = VCC, VPIN5 > Vth,
VPIN2 = GND, All other pins open
TA
Full range
MIN MAX UNIT
4 mA
Copyright © 2004–2015, Texas Instruments Incorporated
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