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  ON Semiconductor Electronic Components Datasheet  

33167T Datasheet

MC33167T

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MC34167, MC33167
5.0 A, Step-Up/Down/
Inverting Switching
Regulators
w w w . d Tahtea Ms hC3e4e16t 74, uM. Cc 3o31m67 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 µA.
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 µA
Economical 5–Lead TO–220 Package with Two Optional Leadforms
Also Available in Surface Mount D2PAK Package
Moisture Sensitivity Level (MSL) Equals 1
Vin
ILIMIT
4
Oscillator
PWM
S
Q
R
2
Thermal
UVLO
Reference
L
EA
1
VO
5.05 V/
5.0 A
35
This device contains 143 active transistors.
Figure 1. Simplified Block Diagram
(Step Down Application)
http://onsemi.com
x = 3 or 4
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
MARKING
DIAGRAMS
1
5
TO–220
TH SUFFIX
CASE 314A
MC
3x167T
AWLYWW
1
5
TO–220
TV SUFFIX
CASE 314B
MC
3x167T
AWLYWW
Heatsink surface connected to Pin 3
TO–220
MC
T SUFFIX
3x167T
CASE 314D AWLYWW
1
5
Pin 1. Voltage Feedback Input
2. Switch Output
3. Ground
4. Input Voltage/VCC
5. Compensation/Standby
D2PAK
D2T SUFFIX
1 CASE 936A
5
Heatsink surface (shown as
terminal 6 in case outline
drawing) is connected to Pin 3
MC
3x167T
AWLYWW
15
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
© Semiconductor Components Industries, LLC, 2002
January, 2002 – Rev. 5
1
Publication Order Number:
MC34167/D


  ON Semiconductor Electronic Components Datasheet  

33167T Datasheet

MC33167T

No Preview Available !

MC34167, MC33167
MAXIMUM RATINGS (Note 2)
Rating
Symbol
Value
Power Supply Input Voltage
Switch Output Voltage Range
Voltage Feedback and Compensation Input Voltage Range
Power Dissipation
Case 314A,
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314B
and
314D
(TA
=
+25°C)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936A (D2PAK) (TA = +25°C)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34167
MC33167
VCC
VO(switch)
VFB, VComp
PD
θJA
θJC
PD
θJA
θJC
TJ
TA
40
–2.0 to + Vin
–1.0 to + 7.0
Internally Limited
65
5.0
Internally Limited
70
5.0
+150
0 to + 70
– 40 to + 85
Storage Temperature Range
Tstg
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. Tlow = 0°C for MC34167
= – 40°C for MC33167
Thigh = + 70°C for MC34167
= + 85°C for MC33167
– 65 to +150
Unit
V
V
V
W
°C/W
°C/W
W
°C/W
°C/W
°C
°C
°C
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2


Part Number 33167T
Description MC33167T
Maker ON Semiconductor
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