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MC34063A/B View Datasheet(PDF) - HTC Korea

Part Name
Description
Manufacturer
MC34063A/B Datasheet PDF : 12 Pages
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DC-DC Converter Control Circuits
MC34063A/B
ELECTRICAL CHARACTERISTICS
(Refer to the test circuits, VCC=5V, TA=TLOW to THIGH, unless otherwise specified, see note 2)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN. TYP. MAX. UNIT
OSCILLATOR
FOSC
Frequency
ICHG
Charge Current
IDISCHG
Discharge Current
IDISCHG/ICHG Discharge to Charge Current Ratio
VIPK(SENSE) Current Limit Sense Voltage
OUTPUT SWITCH
VCE(SAT)
Saturation Voltage,
Darlington connection
VCE(SAT)
Saturation Voltage
hFE
DC Current Gain
IC(OFF)
Collector Off-State Current
COMPARATOR
VPIN5=0V, CT=1nF, TA=25
VCC=5 to 40V, TA=25
VCC=5 to 40V, TA=25
Pin 7= VCC, TA=25
ICHG=IDISCHG, TA=25
ISW=1A, Pins 1,8 connected
ISW=1A, RPIN8=82to VCC,
Forced β ~ 20
ISW=1A, VCE=5V, TA=25
VCE= 40V
24
33
42 KHz
24
35
42
140 220 260
5.2 6.5 7.5
250 300 350 mV
1.0 1.3
V
0.45 0.7
V
50
75
0.01 100
VTH
Threshold Voltage
TA=25
TA=TLOW to THIGH
1.225 1.25 1.275 V
1.21
1.29 V
REGLINE Threshold Voltage Line Regulation
VCC= 3 to 40V
1
5
mV
IIB
Input Bias Current
VIN= 0V
TOTAL DEVICE
VCC= 5 to 40V, CT=1nF
ICC
Supply Current
Pin7= VCC, VPIN5>VTH, Pin2=GND
Remaining pins open
for MC34063A/B
Note 1. Maximum package power dissipation limit must be observed.
Note 2. TLOW= '-30, THIGH= '+125
Note 3. If Darlington configuration is not used, care must be taken to avoid deep saturation of output switch.
The resulting switch-off time may be adversely affected.
In a Darlington configuration the following output driver condition is suggested:
Forced β of output switch :
ΙC(OUTPUT)
10
ΙC(DRIVER) - 7.0mΑ*
* Currentless due to a built in 1Kanti-leakage resistor
-5 -400 nA
1.4
4
mA
Jan. 2011 - Rev. 1.0
-4 -
HTC
 

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