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参数资料
| 型号： | LX1555IDM-TR |
| 厂商： | MICROSEMI CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | ROHS COMPLIANT, PLASTIC, SOIC-8 |
| 文件页数： | 14/18页 |
| 文件大小： | 475K |
| 代理商： | LX1555IDM-TR |
O
B
SO
LETE
PRO
D
UCT
NOT
RECOMMENDED
FOR
NEW
DESIGNS
ULTRA-LOW START-UP CURRENT, CURRENT-MODE PWM
LX1552/3/4/5
PRODUCT D A T ABOOK 1996/1997
5
Copyright 1994
Rev. 1.0b
P RODUCTION
D ATA
S HEET
GRAPH / CURVE INDEX
Characteristic Curves
FIGURE #
1.
OSCILLATOR FREQUENCY vs. TIMING RESISTOR
2.
MAXIMUM DUTY CYCLE vs. TIMING RESISTOR
3.
OSCILLATOR DISCHARGE CURRENT vs. TEMPERATURE
4.
OSCILLATOR FREQUENCY vs. TEMPERATURE
5.
OUTPUT INITIAL ACCURACY vs. TEMPERATURE
6.
OUTPUT DUTY CYCLE vs. TEMPERATURE
7.
REFERENCE VOLTAGE vs. TEMPERATURE
8.
REFERENCE SHORT CIRCUIT CURRENT vs. TEMPERATURE
9.
E.A. INPUT VOLTAGE vs. TEMPERATURE
10. START-UP CURRENT vs. TEMPERATURE
11. START-UP CURRENT vs. SUPPLY VOLTAGE
12. START-UP CURRENT vs. SUPPLY VOLTAGE
13. DYNAMIC SUPPLY CURRENT vs. OSCILLATOR FREQUENCY
14. CURRENT SENSE DELAY TO OUTPUT vs. TEMPERATURE
15. CURRENT SENSE THRESHOLD vs. ERROR AMPLIFIER OUTPUT
16. START-UP THRESHOLD vs. TEMPERATURE
17. START-UP THRESHOLD vs. TEMPERATURE
18. MINIMUM OPERATING VOLTAGE vs. TEMPERATURE
19. MINIMUM OPERATING VOLTAGE vs. TEMPERATURE
20. LOW LEVEL OUTPUT SATURATION VOLTAGE DURING UNDER-
VOLTAGE LOCKOUT
21. OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT and
TEMPERATURE
22. OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT and
TEMPERATURE
FIGURE INDEX
Theory of Operation Section
FIGURE #
23. TYPICAL APPLICATION OF START-UP CIRCUITRY
24. REFERENCE VOLTAGE vs. TEMPERATURE
25. SIMPLIFIED SCHEMATIC OF OSCILLATOR SECTION
26. DUTY CYCLE VARIATION vs. DISCHARGE CURRENT
27. OSCILLATOR FREQUENCY vs. TIMING RESISTOR
28. MAXIMUM DUTY CYCLE vs. TIMING RESISTOR
29. CURRENT SENSE THRESHOLD vs. ERROR AMPLIFIER OUTPUT
Typical Applications Section
FIGURE #
30. CURRENT SENSE SPIKE SUPPRESSION
31. MOSFET PARASITIC OSCILLATIONS
32. ADJUSTABLE BUFFERED REDUCTION OF CLAMP LEVEL
WITH SOFT-START
33. EXTERNAL DUTY CYCLE CLAMP AND MULTI-UNIT SYCHRONIZATION
34. SLOPE COMPENSATION
35. OPEN LOOP LABORATORY FIXTURE
36. OFF-LINE FLYBACK REGULATOR
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| LX1555MY | 功能描述:IC REG CTRLR BST FLYBK ISO 8-DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
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