MC33167 查看數據表（PDF） - ON Semiconductor
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MC33167 Datasheet PDF : 20 Pages
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MC34167, MC33167
ELECTRICAL CHARACTERISTICS (VCC = 12 V, for typical values TA = +25°C, for min/max values TA is the operating ambient
temperature range that applies [Notes 4, 5], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (VCC = 7.5 V to 40 V)
TA = +25°C
fOSC
65
72
TA = Tlow to Thigh
62
–
79
kHz
81
ERROR AMPLIFIER
Voltage Feedback Input Threshold
TA =+ 25°C
TA = Tlow to Thigh
Line Regulation (VCC = 7.5 V to 40 V, TA = +25°C)
Input Bias Current (VFB = VFB(th) + 0.15 V)
Power Supply Rejection Ratio (VCC = 10 V to 20 V, f = 120 Hz)
Output Voltage Swing High State (ISource = 75 µA, VFB = 4.5 V)
Low State (ISink = 0.4 mA, VFB = 5.5 V)
VFB(th)
Regline
IIB
PSRR
VOH
VOL
4.95
4.85
–
–
60
4.2
–
5.05
–
0.03
0.15
80
4.9
1.6
5.15
V
5.20
0.078
%/V
1.0
µA
–
dB
–
V
1.9
PWM COMPARATOR
Duty Cycle (VCC = 20 V)
Maximum (VFB = 0 V)
DC(max)
92
95
Minimum (VComp = 1.9 V)
DC(min)
0
0
100
%
0
SWITCH OUTPUT
Output Voltage Source Saturation (VCC = 7.5 V, ISource = 5.0 A)
Off–State Leakage (VCC = 40 V, Pin 2 = Gnd)
Current Limit Threshold (VCC = 7.5 V)
Switching Times (VCC = 40 V, Ipk = 5.0 A, L = 225 µH, TA = +25°C)
Output Voltage Rise Time
Output Voltage Fall Time
Vsat
Isw(off)
Ipk(switch)
tr
tf
–
(VCC –1.5) (VCC –1.8)
V
–
0
100
µA
5.5
6.5
8.0
A
ns
–
100
200
–
50
100
UNDERVOLTAGE LOCKOUT
Startup Threshold (VCC Increasing, TA = +25°C)
Hysteresis (VCC Decreasing, TA = +25°C)
Vth(UVLO)
5.5
5.9
VH(UVLO)
0.6
0.9
6.3
V
1.2
V
TOTAL DEVICE
Power Supply Current (TA = +25°C )
ICC
Standby (VCC = 12 V, VComp < 0.15 V)
–
36
100
µA
Operating (VCC = 40 V, Pin 1 = Gnd for maximum duty cycle)
–
40
60
mA
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
5. Tlow = 0°C for MC34167
= – 40°C for MC33167
Thigh = + 70°C for MC34167
= + 85°C for MC33167
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