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LT1424IN8-9 Datasheet

  • LT1424IN8-9

  • Isolated Flyback Switching Regulator with 9V Output

  • 16頁(yè)

  • LINER

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LT1424-9
Isolated Flyback
Switching Regulator
with 9V Output
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
No Transformer 鈥淭hird Winding鈥?or Optoisolator
Required
Application Circuit Meets PCMCIA Type II
Height Requirement
Fixed, Application Specific 9V Output Voltage
Regulation Maintained Well into Discontinuous
Mode (Light Load)
Load Compensation Provides Excellent
Load Regulation
Available in 8-Pin PDIP and SO Packages
Operating Frequency: 285kHz
The LT
廬
1424-9 is a monolithic high power switching
regulator specifically designed for the isolated flyback
topology. No 鈥渢hird winding鈥?or optoisolator is required;
the integrated circuit senses the isolated output voltage
directly from the primary side flyback waveform. A high
current, high efficiency switch is included on the die along
with all oscillator, control and protection circuitry.
The LT1424-9 operates with input supply voltages from
3V to 20V and draws only 7mA quiescent current. It can
deliver up to 200mA at 9V with no external power devices.
By utilizing current mode switching techniques, it pro-
vides excellent AC and DC line regulation.
The LT1424-9 has a number of features not found on other
switching regulator ICs. Its unique control circuitry can
maintain regulation well into discontinuous mode. Load
compensation circuitry allows for improved load regula-
tion. An externally activated shutdown mode reduces total
supply current to 20碌A(chǔ) typical for standby operation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
Ethernet Isolated 5V to 鈥?9V Converter
TYPICAL APPLICATIO
鈥?9V PCMCIA Type II Isolated LAN Supply
(2.41mm Maximum Component Height)
ISOLATION
BARRIER
5V
C1
10碌F
25V
C2
10碌F
25V
0.1碌F
LT1424-9
2
1
100k
47pF
1000pF
INPUT
COM
3
4
V
C
SHDN
SYNC
SGND
R
CCOMP
V
IN
V
SW
PGND
8
7
6
5
0.1碌F
D1
1N5248
C5
220pF
D2
MBR0540T4
2
1:1
R1
75鈩?/div>
1
MBRS130LT3
OUT
COM
3
T1
4
1424 TA01
C1, C2, C3, C4: MARCON THCS50E1E106Z CERAMIC
CAPACITOR, SIZE 1812. (847) 696-2000
T1: COILTRONICS CTX02-13483
U
R2
75鈩?/div>
C6
220pF
C3
10碌F
25V
C4
10碌F
25V
1.8k
鈥?V
200mA
U
U
1

LT1424IN8-9 產(chǎn)品屬性

  • LT1424-9

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 回掃，隔離

  • 固定

  • 1

  • 9V

  • 2.8 V ~ 20 V

  • 電流模式

  • 285kHz

  • 200mA

  • 無(wú)

  • -40°C ~ 125°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 管件

  • 8-PDIP

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