MC33167D2T ON Semiconductor, MC33167D2T Datasheet - Page 12
MC33167D2T
Manufacturer Part Number
MC33167D2T
Description
IC REG SWITCH INVERT 5A D2PAK-5
Manufacturer
ON Semiconductor
Type
Step-Down (Buck), Step-Up (Boost), Invertingr
Datasheet
1.MC33167TG.pdf
(20 pages)
Specifications of MC33167D2T
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5 ~ 40 V
Current - Output
5A
Frequency - Switching
72kHz
Voltage - Input
7.5 ~ 40 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
D²Pak, TO-263 (5 leads + tab)
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC33167D2T
Manufacturer:
ON
Quantity:
347
Company:
Part Number:
MC33167D2T
Manufacturer:
MOT
Quantity:
5 510
Company:
Part Number:
MC33167D2TC
Manufacturer:
TI
Quantity:
5 510
Two potential problems arise when designing the standard voltage−inverting converter with the MC34167. First, the Switch Output emitter is
limited to −1.5 V with respect to the ground pin and second, the Error Amplifier’s noninverting input is internally committed to the reference and
is not pinned out. Both of these problems are resolved by connecting the IC ground pin to the converter’s negative output as shown in Figure 23.
This keeps the emitter of Q
drop across R
1
is equal to 5.05 V when the output is in regulation.
+
Figure 24. Voltage−Inverting Converter Printed Circuit Board and Component Layout
L = Coilcraft M1496−A or General Magnetics Technology GMT−0223, 42 turns of #16 AWG on
Magnetics Inc. 58350−A2 core. Heatsink = AAVID Engineering Inc. 5903B, or 5930B.
(Bottom View)
PWM
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
1
positive with respect to the ground pin and has the effect of reversing the Error Amplifier inputs. Note that the voltage
Oscillator
3.0″
3
Test
Thermal
Figure 23. Voltage−Inverting Converter
V
V
V
V
V
V
in
in
in
in
in
in
MC34167, MC33167
= 10 V to 24 V, I
= 12 V, I
= 12 V, I
= 12 V, R
= 12 V, I
= 24 V, I
http://onsemi.com
S
R
5
Q
Conditions
+
O
O
O
O
L
= 0.1 A to 1.7 A
= 1.7 A
= 1.7 A
= 1.7 A
= 0.1 W
12
ILIMIT
UVLO
Reference
0.47
C
O
F
= 1.7 A
EA
+
+
+
+
+
+
+
4.7 k
V in
+
R
F
Q
+
−
1
Î Î Î Î Î Î
Î Î Î Î Î Î
Î Î Î Î Î Î
Î Î Î Î Î Î
Î Î Î Î Î Î
Î Î Î Î Î Î
3.3 k
15 mV = ± 0.61%
4.0 mV = ± 0.020%
78 mV
5.7 A
79.5%
86.2%
4
2
1
R
2
+
12 V
V
in
Î Î Î
pp
Results
RF
330
−
C
2.4 k
190 mH
R
0.047
in
V O
C
1
L
1
(Top View)
1N5825
+
D
C F
1
+
4700
C
−12 V/1.7 A
O
+
V
O
+
+
+
+
+
+