MC34261 데이터 시트보기 (PDF) - ON Semiconductor
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MC34261 Datasheet PDF : 13 Pages
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MC34261, MC33261
ELECTRICAL CHARACTERISTICS (VCC = 12 V, 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
CURRENT SENSE COMPARATOR
Input Bias Current (VPin 4 = 0 V)
Input Offset Voltage (VPin 2 = 1.1 V, VPin 3 = 0 V)
Delay to Output
DRIVE OUTPUT
Output Voltage (VCC = 12 V)
Low State (ISink = 20 mA)
Low State (ISink = 200 mA)
High State (ISource = 20 mA)
High State (ISource = 200 mA)
Output Voltage (VCC = 30 V)
High State (ISource = 20 mA, CL = 15 pF)
Symbol
Min
IIB
−
VIO
−
tPHL (in/out)
−
VOL
−
1.8
VOH
9.8
7.8
VO(max)
14
Typ
−0.5
3.5
200
0.3
2.4
10.3
8.3
16
Max
Unit
−2.0
μA
15
mV
400
ns
V
0.8
3.3
−
8.8
V
18
Output Voltage Rise Time (CL = 1.0 nF)
Output Voltage Fall Time (CL = 1.0 nF)
Output Voltage with UVLO Activated (VCC = 7.0 V, ISink = 1.0 mA)
RESTART TIMER
Restart Time Delay
UNDERVOLTAGE LOCKOUT
Startup Threshold (VCC Increasing)
Minimum Operating Voltage After Turn−On (VCC Decreasing)
Hysteresis
TOTAL DEVICE
Power Supply Current
Startup (VCC = 7.0 V)
Operating
Dynamic Operating (50 kHz, CL = 1.0 nF)
Power Supply Zener Voltage
NOTES: 1. Maximum package power dissipation limits must be observed.
Pin 4 Threshold Voltage
2. K =
VPin 3(VPin 2 − VFB)
3. Tlow = −40°C for MC34261
3. Tlow = −40°C for MC33261
Thigh = +70°C for MC34261
Thigh = +85°C for MC33261
Figure 1. Current Sense Input Threshold
versus Multiplier Input
3.0
tr
tf
VOH(UVLO)
tDLY
Vth
VShutdown
VH
ICC
VZ
−
−
−
150
9.2
7.0
1.75
−
−
−
30
50
50
0.2
400
10.0
8.0
2.0
0.3
7.1
9.0
36
120
ns
120
ns
0.8
V
−
μs
10.8
V
9.0
V
2.5
V
mA
0.5
12
20
−
V
Figure 2. Current Sense Input Threshold
versus Multiplier Input
0.16
2.5
0.14
0.12
2.0
0.10
1.5
0.08
1.0
0.5
0
−0.5
−0.5 0
See Figure 2
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
VM, MULTIPLIER INPUT VOLTAGE (V)
0.06
0.04
0.02
0
−0.02
−0.12 −0.08 −0.04
0
0.04
0.08
0.12
VM, MULTIPLIER INPUT VOLTAGE (V)
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