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UC1845A-SP датащи(PDF) 3 Page - Texas Instruments

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номер детали UC1845A-SP
подробное описание детали  QML Class V, Radiation Hardened Current-Mode PWM Controller
Download  28 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

UC1845A-SP датащи(HTML) 3 Page - Texas Instruments

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2
3
4
5
6
7
8
9
Gnd
Output
V
CC
V
REF
R /C
T
T
I
SENSE
V
FB
Comp
1
10
NC
NC
1
2
3
4
5
6
7
8
9 10 11 12 13
14
15
16
17
18
19
20
V
FB
N/C
I
SENSE
N/C
N/C
Output
N/C
V
C
V
CC
N/C
1
2
3
4
5
6
7
8
Gnd
Output
V
CC
V
REF
R /C
T
T
I
SENSE
V
FB
Comp
UC1845A-SP
www.ti.com
SLUSC14 – MAY 2015
6 Device Comparison Table
PART NO.
UVLO ON
UVLO OFF
MAXIMUM DUTY CYCLE
UC1842A
16 V
10 V
<100%
UC1843A
8.5 V
7.9 V
<100%
UC1844A
16 V
10 V
<50%
UC1845A
8.5 V
7.9 V
<50%
7 Pin Configuration and Functions
JG Package
FK Package
8-Pin CDIP
20-Pin LCCC
Top View
Top View
HKU Package
10-Pin CFP
Top View
Pin Functions
PIN
I/O
DESCRIPTION
NAME
CDIP
LCCC
CFP
Comp
1
2
1
I
Error amplifier output
VFB
2
5
2
I
Voltage feedback input to error amplifier
ISENSE(C/S)
3
7
3
I
Current sense comparator input pin
RT/CT
4
10
4
I
RC time constant input to oscillator
1, 3, 4, 6, 8, 9,
NC
5, 6
No connect
11, 14, 16, 19
Pwr Gnd
12
Output section ground
Gnd
5
13
7
Ground
Output
6
15
8
O
Regulated output
VC
17
Output section supply voltage
VCC
7
18
9
Unregulated supply voltage
VREF
8
20
10
O
5-V internally generated reference
Copyright © 2015, Texas Instruments Incorporated
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