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UC1846-SP датащи(PDF) 3 Page - Texas Instruments

номер детали UC1846-SP
подробное описание детали  Class-V, Radiation Hardened PWM Controller
Download  29 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1846-SP датащи(HTML) 3 Page - Texas Instruments

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3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
B Out
V
C
NC
Gnd
A Out
C/S–
C/S+
NC
E/A+
E/A–
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
C/L SS
C/S–
C/S+
E/A+
E/A–
Comp
C
T
Shutdown
V
IN
B Out
V
C
Gnd
A Out
Sync
R
T
V
REF
3
UC1846-SP
www.ti.com
SLUS871D – JANUARY 2009 – REVISED DECEMBER 2016
Product Folder Links: UC1846-SP
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
FK Package
20-Pin LCCC
Top View
J or W Package
16-Pin CDIP or CFP
Top View
Pin Functions
PIN
I/O
DESCRIPTION
NAME
CDIP or CFP
LCCC
CL SS
1
2
I
Current limit/soft-start.
VREF
2
3
O
5.1-V internally generated reference.
CS-
3
4
I
Inverting input of current sense operational amplifier.
CS+
4
5
I
Non-Inverting input of current sense operational amplifier.
EA+
5
7
I
Non-Inverting input of error amplifier.
EA-
6
8
I
Inverting input of error amplifier.
COMP
7
9
O
Output of error amplifier.
CT
8
10
I
Timing capacitance. Capacitor connected from CT to ground is charged via
current established by RT pin via current mirror. Output pulse dead time is
determined by the size of the capacitor during capacitor discharge time.
RT
9
12
I
Determines oscillator frequency. VREF sources thru RT to create a current
which is mirrored to CT pin.
SYNC
10
13
I/O
Sync pin is an output under normal operation when RT is above 4.1-V sync
output high. Sync pin is an input when RT pin is high and CT pin tied low.
AOUT
11
14
O
Output driver (source/sink).
GND
12
15
Ground connection.
VC
13
17
I
Gate drive collector supply voltage. Decouple with capacitor.
BOUT
14
18
O
Output driver (source/sink).
VIN
15
19
I
Input voltage decouple with capacitor.
SHUTDOWN
16
20
I
Shutdown threshold 350 mV. Voltage above threshold latches off oscillator.
NC
1, 6, 11
No connect.


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