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MC33166T 数据表(PDF) 1 Page - ON Semiconductor

部件名 MC33166T
功能描述  POWER SWITCHING REGULATORS
Download  20 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

MC33166T 数据表(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2002
January, 2002 – Rev. 6
1
Publication Order Number:
MC34166/D
MC34166, MC33166
3.0 A, Step-Up/Down/
Inverting Switching
Regulators
The MC34166, MC33166 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 3.0 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
Figure 1. Simplified Block Diagram
(Step Down Application)
EA
VO
ILIMIT
Vin
4
2
S
Q
R
UVLO
3
5
L
5.05 V/
3.0 A
Reference
Thermal
PWM
Oscillator
1
This device contains 143 active transistors.
http://onsemi.com
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/VCC
5.
Compensation/Standby
D2PAK
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
MC
3x166T
AWLYWW
MC
3x166T
AWLYWW
MC
3x166T
AWLYWW
1
5
MC
3x166T
AWLYWW
15


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