MC33262D 查看數據表（PDF） - Motorola => Freescale
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MC33262D Datasheet PDF : 16 Pages
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MC34262 MC33262
ELECTRICAL CHARACTERISTICS (VCC = 12 V (Note 2), 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
CURRENT SENSE COMPARATOR
Input Bias Current (VPin 4 = 0 V)
Input Offset Voltage (VPin 2 = 1.1 V, VPin 3 = 0 V)
Maximum Current Sense Input Threshold (Note 5)
Delay to Output
DRIVE OUTPUT
IIB
—
VIO
—
Vth(max)
1.3
tPHL(in/out)
—
– 0.15
9.0
1.5
200
–1.0
µA
25
mV
1.8
V
400
ns
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)
V
VOL
—
0.3
0.8
—
2.4
3.3
VOH
9.8
10.3
—
7.8
8.4
—
Output Voltage (VCC = 30 V)
High State (ISource = 20 mA, CL = 15 pF)
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
VO(max)
14
tr
—
tf
—
VO(UVLO)
—
V
16
18
50
120
ns
50
120
ns
0.1
0.5
V
Restart Time Delay
UNDERVOLTAGE LOCKOUT
tDLY
200
620
—
µs
Startup Threshold (VCC Increasing)
Vth(on)
11.5
13
14.5
V
Minimum Operating Voltage After Turn–On (VCC Decreasing)
VShutdown
7.0
8.0
9.0
V
Hysteresis
VH
3.8
5.0
6.2
V
TOTAL DEVICE
Power Supply Current
ICC
Startup (VCC = 7.0 V)
Operating
Dynamic Operating (50 kHz, CL = 1.0 nF)
Power Supply Zener Voltage (ICC = 25 mA)
VZ
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Adjust VCC above the startup threshold before setting to 12 V.
3. Tlow = 0°C for MC34262
3. Tlow = – 40°C for MC33262
Thigh = + 85°C for MC34262
Thigh = +105°C for MC33262
mA
—
0.25
0.4
—
6.5
12
—
9.0
20
30
36
—
V
Pin 4 Threshold
4. K =
VPin 3 (VPin 2 – Vth(M))
5. This parameter is measured with VFB = 0 V, and VPin 3 = 3.0 V.
Figure 1. Current Sense Input Threshold
versus Multiplier Input
1.6
VCC = 12 V
1.4 TA = 25°C
1.2
1.0
0.8
0.6
0.4
0.2
0
– 0.2
VPin 2 = 2.0 V
0.6
1.4
2.2
3.0
3.8
VM, MULTIPLIER PIN 3 INPUT VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
Figure 2. Current Sense Input Threshold
versus Multiplier Input, Expanded View
0.08
0.07 VPin 2 = 3.5 V
VPin 2 = 3.25 V
0.06
VCC = 12 V
TA = 25°C
0.05
0.04
0.03
0.02
0.01
0
– 0.12
VPin 2 = 2.0 V
– 0.06
0
0.06
0.12
0.18
0.24
VM, MULTIPLIER PIN 3 INPUT VOLTAGE (V)
3
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