MC34163 Datasheet, PDF (3/16 Pages) ON Semiconductor – POWER SWITCHING REGULATORS

MC34163 MC33163
ELECTRICAL CHARACTERISTICS (continued) (VCC = 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max
values TA is the operating ambient temperature range that applies (Note 3), unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
FEEDBACK COMPARATOR 2
Threshold Voltage
TA = 25°C
Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)
Total Variation over Line, and Temperature
Vth(FB2)
1.225
–
1.213
1.25
0.008
–
1.275
V
0.03
%/V
1.287
V
Input Bias Current (VFB2 = 1.25 V)
IIB(FB2)
– 0.4
0
CURRENT LIMIT COMPARATOR
Threshold Voltage
TA = 25°C
Total Variation over VCC = 2.5 V to 40 V, and Temperature
Vth(Ipk _Sense)
–
250
230
–
Input Bias Current (VIpk _(Sense) = 15 V)
IIB(sense)
–
1.0
DRIVER AND OUTPUT SWITCH (Note 2)
Sink Saturation Voltage (ISW = 2.5 A, Pins 14, 15 grounded)
VCE(sat)
Non–Darlington Connection (RPin ₉ = 110 Ω to VCC, ISW/IDRV ≈ 20)
–
0.6
Darlington Connection (Pins 9, 10, 11 connected)
–
1.0
0.4
µA
mV
–
270
20
µA
V
1.0
1.4
Collector Off–State Leakage Current (VCE = 40 V)
Bootstrap Input Current Source (VBS = VCC + 5.0 V)
Bootstrap Input Zener Clamp Voltage (IZ = 25 mA)
LOW VOLTAGE INDICATOR
Input Threshold (VFB2 Increasing)
Input Hysteresis (VFB2 Decreasing)
Output Sink Saturation Voltage (Isink = 2.0 mA)
Output Off–State Leakage Current (VOH = 15 V)
TOTAL DEVICE
Standby Supply Current (VCC = 2.5 V to 40 V, Pin 8 = VCC,
Pins 6, 14, 15 = Gnd, remaining pins open)
IC(off)
–
0.02
100
µA
Isource(DRV)
0.5
2.0
4.0
mA
VZ
VCC + 6.0 VCC + 7.0 VCC + 9.0 V
Vth
1.07
1.125
1.18
V
VH
–
15
–
mV
VOL(LVI)
–
0.15
0.4
V
IOH
–
0.01
5.0
µA
ICC
–
6.0
10
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 as possible.
3. Tlow = 0°C for MC34163
= – 40°C for MC33163
Thigh = + 70°C for MC34163
= + 85°C for MC33163
Figure 1. Output Switch On–Off Time
versus Oscillator Timing Capacitor
100 _{VCC = 15 V}
TA = 25°C
1) ton, RDT = ∞
2) ton, RDT = 20 k
3) ton, toff, RDT = 10 k
1
4) toff, RDT = 20 k
5) toff, RDT = ∞
10
2
3
4
5
1.0
0.1
1.0
10
CT, OSCILLATOR TIMING CAPACITOR (nF)
Figure 2. Oscillator Frequency Change
versus Temperature
2.0
VCC = 15 V
CT = 620 pF
0
– 2.0
– 4.0
– 6.0
– 55
– 25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
100 125
MOTOROLA ANALOG IC DEVICE DATA
3