MC33166D2T 查看數據表（PDF） - Motorola => Freescale
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MC33166D2T Datasheet PDF : 16 Pages
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MC34166 MC33166
Figure 25. Negative Input/Positive Output Regulator
+
ILIMIT
4
Oscillator
PWM
Thermal
S
Q
R
+
UVLO
Reference
EA
Q1
2
+
1
22
0.01
1N5822
ǒ Ǔ + ) VO
5.05
R1
R2
0.7
R1
D1
Z1
L
MUR415
MTP
3055E
VO
+ 36 V/0.25 A
+
R1 1000
36 k
2N3906
3
Vin
–12 V
+
5
0.22
470 k
R2
0.002
5.1 k
1000
*Gate resistor RG, zener diode D3, and diode D4 are required only when Vin is greater than 20 V.
Test
Conditions
Results
Line Regulation
Vin = –10 V to – 20 V, IO = 0.25 A
250 mV = ± 0.35%
Load Regulation
Vin = –12 V, IO = 0.025 A to 0.25 A
790 mV = ±1.19%
Output Ripple
Vin = –12 V, IO = 0.25 A
80 mVpp
Efficiency
Vin = –12 V, IO = 0.25 A
79.2%
L = Coilcraft M1496–A or ELMACO CHK1050, 42 turns of #16 AWG on Magnetics Inc. 58350–A2 core.
Heatsink = AAVID Engineering Inc. 5903B or 5930B
Figure 26. Variable Motor Speed Control with EMF Feedback Sensing
+
Oscillator
PWM
ILIMIT
S
Q
R
UVLO
Vin
4 18 V
+
1000
2
1N5822
Thermal
+
Reference
EA
Brush
Motor
+
1
5.6 k 1.0 k
+
47
50 k
Faster
3
5
0.1
56 k
Test
Low Speed Line Regulation
High Speed Line Regulation
Conditions
Vin = 12 V to 24 V
Vin = 12 V to 24 V
Results
1760 RPM ±1%
3260 RPM ± 6%
12
MOTOROLA ANALOG IC DEVICE DATA
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