34063A Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – DC-TO-DC CONVERTER CONTROL CIRCUITS

ORDERING INFORMATION
Device Temperature
Range
34063AD 0° to +70°C
34063AP1
Package
SO-8
Plastic DIP
Pin connection
ELECTRICAL CHARACTERICISTICS
(V_CC = 5.0 V, T_A= 0 to +70^oC unless otherwise specified.)
Characteristics
Symbol
Min
OSCILLATOR
Frequency (V_{Pin 5} = 0 V, C_T = 1.0 nF, T_A = 25°C)
f_osc
24
Charge Current (V_CC = 5.0 V to 40 V, T_A = 25°C)
I_chg
24
Discharge Current (V_CC = 5.0 V to 40 V, T_A = 25°C)
I_dischg
140
Discharge to Charge Current Ratio (Pin7 to Vcc, TA=25°C) I_dischg/I_chg
5.2
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
V_lpk(sense) 250
OUTPUT SWITCH (Note 3)
Saturation Voltage, Darlington Connection (ISW = 1.0 A,
V_CE(sat)
—
Pins 1, 8 connected)
Saturation Voltage (I_SW = 1.0 A, R_{Pin 8} = 82 Ω to V_CC. VCE(sat)
—
Forced β = 20)
DC Current Gain (I_SW = 1.0 A, V_CE ⁼ 5.0 V, T_A = 25°C) h_FE
50
Collector Off-State Current (V_CE = 40V)
I_C(off)
—
COMPARATOR
Threshold Voltage (TA = 25°C)
(TA = TLOW to THIGH)
Vth
1.225
1.21
Threshold Voltage (TA = 25°C) **
Vth
1.2375
Typ
33
33
200
6.2
300
1.0
0.45
120
0.01
1.25
—
1.25
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V) V _{REG line}
1.4
Input Bias Current (Vin=0V)
I_IB
—
-40
TOTAL DEVICE
Supply Current (VCC = 5 0 V to 40 V, CT = 1 0 nF, Vpin7 =
I_CC
2.5
VCC. VPin5 > Vth, Pin 2 = Gnd, Remaining pins open)
Max Unit
42
kHz
42
µA
260 µA
7.5
—
350 mV
1.3
V
0.7
V
—
—
100 µA
1.275 V
1.29
1.2625 V
5.0
mV
-400 nA
4.0
mA
NOTES:
1. Maximum package power dissipation limits must be observed.
2.
Low duty cycle pulse techniques are used during test to maintain Junction temperature as close to ambient
temperature as possible
3.
If the output switch is driven into hard saturation (non Darlington configuration) at low switch currents (< 300 mA) and
high driver
currents (>30 mA), it may take up to 2.0 µs to come out of saturation This condition will shorten the off' time
at frequencies > 30 kHz, and is magnified at high temperatures This condition does not occur with a Darlington configuration,
since the output switch cannot
saturate If a non Darlington configuration is used, the following output drive condition is
recommended
Forced β of output switch = IC, output/(Ic, driver -7.0 mA*) > 10
*The 100 Ω. resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts
**Possible version for shipment