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LT1533

APPLICATIONS INFORMATION

The slew rate adjustment should be made by putting a

3.9k resistor in series with a 50k pot on the R

VSL

and R

CSL

pins (or a 2k resistor in series with a 25k pot with both

pins tied together). Monitor output noise or other system

signal while increasing the resistance until desired noise

performance is reached. System efficiency can also be

monitored.

While this topology is not as quiet as a push-pull con-

verter, it can provide a low cost, isolated power supply that

has decreased noise relative to other solutions.

More Help

AN70 contains much information concerning LT1533

applications and measurement of noise and should be

consulted. A 5V to 12V demo board is also available

(DC173). AN19 and AN29 also have general knowledge

concerning switching regulators. Our Application Depart-

ment is always ready to lend a helping hand.

TYPICAL APPLICATIONS

5V

14

V

IN

COL A

PGND

LT1533

3

SHDN

11

4

DUTY

SHDN

SYNC

GND R

T

9 6

COL B

R

CSL

R

VSL

C

T

V

C

NFB FB

5 10 8 7

3300pF

18k

10k

15

12

13

4k TO 68k

43k

5V

68k

BAT85

1

3.3

2

16

25nH*

BAT85

1

22碌F

10V

T1**

Figure 6. 5V to

鹵12V

DC Transformer

U

W

U

U

U

1N5819

脳

4

L1

100碌H

8

LT1121CS8

3

2

R4

150k

150k

5

4

1

332k

12V

80mA

2.2碌F

25V

3.3

22碌F

35V

22碌F

35V

L2

100碌H

1, 2, 7, 8

324k

2.2碌F

25V

鈥?2V

80mA

1533 F06

LT1175CS8

3

* BEAD OR PCB TRACE

** COILTRONICS CTX02 13716-X1

L1, L2: COILCRAFT DT1608C-104

15

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LT1533C相關型號PDF文件下載

• 型號
  版本
  描述
  廠商
  下載
• LT151
  英文版
  Seoul Semiconductor [Infrared LAMP LED]
  SEOUL
  LT151
• LT1500
  英文版
  Adaptive-Frequency Current Mode Switching Regulators
  LINER
  LT1500
• LT1500
  英文版
  Adaptive-Frequency Current Mode Switching Regulators
  Linear
  LT1500
• LT1501
  英文版
  Adaptive-Frequency Current Mode Switching Regulators
  LINER
  LT1501
• LT1501
  英文版
  Adaptive-Frequency Current Mode Switching Regulators
  Linear
  LT1501
• LT1505
  英文版
  Constant-Current/Voltage High Efficiency Battery Charger
  LINER
  LT1505
• LT1505
  英文版
  Constant-Current/Voltage High Efficiency Battery Charger
  Linear
  LT1505
• LT1506
  英文版
  4.5A, 500kHz Step-Down Switching Regulator
  LINER
  LT1506
• LT1506
  英文版
  4.5A, 500kHz Step-Down Switching Regulator
  Linear
  LT1506
• LT1506
  英文版
  4.5A, 500kHz Step-Down Switching Regulator
  Linear
  LT1506
• LT1507
  英文版
  500kHz Monolithic Buck Mode Switching Regulator
  LINER
  LT1507
• LT1507
  英文版
  500kHz Monolithic Buck Mode Switching Regulator
  Linear
  LT1507
• LT1508
  英文版
  Power Factor and PWM Controller(Voltage Mode)
  LINER
  LT1508
• LT1508
  英文版
  Power Factor and PWM Controller (Voltage Mode)
  Linear
  LT1508
• LT1508
  英文版
  Power Factor and PWM Controller (Voltage Mode)
  Linear
  LT1508
• LT1509
  英文版
  Power Factor and PWM Controller
  LINER
  LT1509
• LT1509
  英文版
  Power Factor and PWM Controller
  Linear
  LT1509
• LT150A
  英文版
  3 Amp Positive Adjustable Regulator
  Linear
  LT150A
• LT150Z
  英文版
  Seoul Semiconductor [GREEN OVAL LAMP LED]
  SEOUL
  LT150Z
• LT1510
  英文版
  Constant-Voltage/ Constant-Current Battery Charger
  LINER
  LT1510

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