KGM34063AS
DC-TO-DC CONVERTER CONTROL CIRCUITS
ORDERING INFORMATION
Device
Temperature
Range
Package
KGM34063ASD
KGM34063ASN
0° to +70°C
0° to +70°C
SO-8
Plastic DIP
ELECTRICAL CHARACTERICISTICS
(VCC = 5.0 V, TA= 0 to +70oC unless otherwise specified.)
Characteristics
Symbol
OSCILLATOR
Min
Typ
Max
Unit
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C)
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C)
Discharge to Charge Current Ratio (Pin7 to Vcc, TA=25°C)
Current Limit Sense Voltage (Ichg = Idischg, TA = 25°C)
fosc
Ichg
24
24
140
33
33
200
6.2
300
42
42
260
7.5
350
kHz
μA
μA
—
Idischg
Idischg/Ichg 5.2
Vlpk(sense) 250
mV
OUTPUT SWITCH (Note 3)
Saturation Voltage, Darlington Connection (ISW = 1.0 A, Pins
1, 8 connected)
VCE(sat)
—
—
1.0
1.3
0.7
V
V
VCE(sat)
0.45
Saturation Voltage (ISW = 1.0 A, RPin 8 = 82 Ω to VCC.
Forced β = 20)
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C) hFE
50
—
120
0.01
—
100
—
μA
Collector Off-State Current (VCE = 40V)
IC(off)
COMPARATOR
Threshold Voltage (TA = 25°C)
Vth
1.225
1.21
1.25
—
1.275
1.29
V
(TA = TLOW to THIGH
)
Threshold Voltage (TA = 25°C) **
Vth
1.2375 1.25
1.2625
V
Threshold Voltage Line Regulation (VCC = 3 0 V to 40 V)
Input Bias Current (Vin=0V)
Regline
IIB
TOTAL DEVICE
1.4
-40
5.0
-400
mV
nA
—
Supply Current (VCC = 5 0 V to 40 V, CT = 1 0 nF, Vpin7
VCC. VPin5 > Vth, Pin 2 = Gnd, Remaining pins open)
=
ICC
2.5
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
2
А4
ESTEK [ Estek Electronics Co. Ltd ]
