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MC33167THG

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
© Semiconductor Components Industries, LLC, 2005
November, 2005 − Rev. 7
1 Publication Order Number:
MC34167/D
MC34167, MC33167
5.0 A, Step−Up/Down/
Inverting Switching
Regulators
The MC34167, MC33167 series are high performance fixed
frequency power switching regulators that contain the primary
functions required for dc−to−dc converters. This series was
specifically designed to be incorporated in step−down and
voltage−inverting configurations with a minimum number of external
components and can also be used cost effectively in step−up
applications.
These devices consist of an internal temperature compensated
reference, fixed frequency oscillator with on−chip timing components,
latching pulse width modulator for single pulse metering, high gain
error amplifier, and a high current output switch.
Protective features consist of cycle−by−cycle current limiting,
undervoltage lockout, and thermal shutdown. Also included is a low
power standby mode that reduces power supply current to 36 mA.
Features
• Output Switch Current in Excess of 5.0 A
• Fixed Frequency Oscillator (72 kHz) with On−Chip Timing
• Provides 5.05 V Output without External Resistor Divider
• Precision 2% Reference
• 0% to 95% Output Duty Cycle
• Cycle−by−Cycle Current Limiting
• Undervoltage Lockout with Hysteresis
• Internal Thermal Shutdown
• Operation from 7.5 V to 40 V
• Standby Mode Reduces Power Supply Current to 36 mA
• Economical 5−Lead TO−220 Package with Two Optional Leadforms
• Also Available in Surface Mount D
2
PAK Package
• Moisture Sensitivity Level (MSL) Equals 1
• Pb−Free Packages are Available
Figure 1. Simplified Block Diagram
(Step Down Application)
EA
V
O
I
LIMIT
V
in
4
2
S
Q
R
UVLO
3
5
L
5.05 V/
5.0 A
Reference
Thermal
PWM
Oscillator
1
This device contains 143 active transistors.
TO−220
TH SUFFIX
CASE 314A
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
ORDERING INFORMATION
1
5
MARKING
DIAGRAMS
1
5
TO−220
TV SUFFIX
CASE 314B
1
5
Heatsink surface connected to Pin 3
TO−220
T SUFFIX
CASE 314D
Pin 1. Voltage Feedback Input
2. Switch Output
3. Ground
4. Input Voltage/V
CC
5. Compensation/Standby
D
2
PAK
D2T SUFFIX
CASE 936A
Heatsink surface (shown as
terminal 6 in case outline
drawing) is connected to Pin 3
x = 3 or 4
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
MC
3x167T
AWLYWWG
1
5
15
http://onsemi.com
MC
3x167T
AWLYWWG
MC
3x167T
AWLYWWG
MC
3x167T
AWLYWWG
MC34167, MC33167
http://onsemi.com
2
MAXIMUM RATINGS (Note 1 and 2)
Rating Symbol Value Unit
Power Supply Input Voltage V
CC
40 V
Switch Output Voltage Range V
O(switch)
−2.0 to + V
in
V
Voltage Feedback and Compensation Input Voltage Range V
FB,
V
Comp
−1.0 to + 7.0 V
Power Dissipation
Case 314A, 314B and 314D (T
A
= +25°C) P
D
Internally Limited W
Thermal Resistance, Junction−to−Ambient
q
JA
65 °C/W
Thermal Resistance, Junction−to−Case
q
JC
5.0 °C/W
Case 936A (D
2
PAK) (T
A
= +25°C) P
D
Internally Limited W
Thermal Resistance, Junction−to−Ambient
q
JA
70 °C/W
Thermal Resistance, Junction−to−Case
q
JC
5.0 °C/W
Operating Junction Temperature T
J
+150 °C
Operating Ambient Temperature (Note 3)
MC34167
MC33167
T
A
0 to + 70
− 40 to + 85
°C
Storage Temperature Range T
stg
− 65 to +150 °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Maximum package power dissipation limits must be observed to prevent thermal shutdown activation.
2. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL−STD−883, Method 3015.
Machine Model Method 200 V.
3. T
low
=0°C for MC34167 T
high
= + 70°C for MC34167
=−40°C for MC33167 = + 85°C for MC33167
MC34167, MC33167
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (V
CC
= 12 V, for typical values T
A
= +25°C, for min/max values T
A
is the operating ambient
temperature range that applies (Notes 4, 5), unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
OSCILLATOR
Frequency (V
CC
= 7.5 V to 40 V) T
A
= +25°C
T
A
= T
low
to T
high
f
OSC
65
62
72
−
79
81
kHz
ERROR AMPLIFIER
Voltage Feedback Input Threshold T
A
=+ 25°C
T
A
= T
low
to T
high
V
FB(th)
4.95
4.85
5.05
−
5.15
5.20
V
Line Regulation (V
CC
= 7.5 V to 40 V, T
A
= +25°C) Reg
line
− 0.03 0.078 %/V
Input Bias Current (V
FB
= V
FB(th)
+ 0.15 V) I
IB
− 0.15 1.0
mA
Power Supply Rejection Ratio (V
CC
= 10 V to 20 V, f = 120 Hz) PSRR 60 80 − dB
Output Voltage Swing High State (I
Source
= 75 mA, V
FB
= 4.5 V)
Low State (I
Sink
= 0.4 mA, V
FB
= 5.5 V)
V
OH
V
OL
4.2
−
4.9
1.6
−
1.9
V
PWM COMPARATOR
Duty Cycle (V
CC
= 20 V) Maximum (V
FB
= 0 V)
Minimum (V
Comp
= 1.9 V)
DC
(max)
DC
(min)
92
0
95
0
100
0
%
SWITCH OUTPUT
Output Voltage Source Saturation (V
CC
= 7.5 V, I
Source
= 5.0 A) V
sat
− (V
CC
−1.5) (V
CC
−1.8) V
Off−State Leakage (V
CC
= 40 V, Pin 2 = GND) I
sw(off)
− 0 100
mA
Current Limit Threshold (V
CC
= 7.5 V) I
pk(switch)
5.5 6.5 8.0 A
Switching Times (V
CC
= 40 V, I
pk
= 5.0 A, L = 225 mH, T
A
= +25°C)
Output Voltage Rise Time
Output Voltage Fall Time
t
r
t
f
−
−
100
50
200
100
ns
UNDERVOLTAGE LOCKOUT
Startup Threshold (V
CC
Increasing, T
A
= +25°C) V
th(UVLO)
5.5 5.9 6.3 V
Hysteresis (V
CC
Decreasing, T
A
= +25°C) V
H(UVLO)
0.6 0.9 1.2 V
TOTAL DEVICE
Power Supply Current (T
A
= +25°C )
Standby (V
CC
= 12 V, V
Comp
< 0.15 V)
Operating (V
CC
= 40 V, Pin 1 = GND for maximum duty cycle)
I
CC
−
−
36
40
100
60
mA
mA
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
5. T
low
=0°C for MC34167 T
high
= + 70°C for MC34167
=−40°C for MC33167 = + 85°C for MC33167
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MC33167THG

Mfr. #:
Buy MC33167THG
Manufacturer:
ON Semiconductor
Description:
Switching Voltage Regulators 40V 5A Buck/Boost/Inverting
Lifecycle:
New from this manufacturer.
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