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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM3524D bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM3524D bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
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1 / 22 page  LM2524D/LM3524D Regulating Pulse Width Modulator General Description The LM3524D family is an improved version of the industry standard LM3524. It has improved specifications and addi- tional features yet is pin for pin compatible with existing 3524 families. New features reduce the need for additional exter- nal circuitry often required in the original version. The LM3524D has a ±1% precision 5V reference. The cur- rent carrying capability of the output drive transistors has been raised to 200 mA while reducing V CEsat and increasing V CE breakdown to 60V. The common mode voltage range of the error-amp has been raised to 5.5V to eliminate the need for a resistive divider from the 5V reference. In the LM3524D the circuit bias line has been isolated from the shut-down pin. This prevents the oscillator pulse ampli- tude and frequency from being disturbed by shut-down. Also at high frequencies ( .300 kHz) the max. duty cycle per output has been improved to 44% compared to 35% max. duty cycle in other 3524s. In addition, the LM3524D can now be synchronized exter- nally, through pin 3. Also a latch has been added to insure one pulse per period even in noisy environments. The LM3524D includes double pulse suppression logic that in- sures when a shut-down condition is removed the state of the T-flip-flop will change only after the first clock pulse has arrived. This feature prevents the same output from being pulsed twice in a row, thus reducing the possibility of core saturation in push-pull designs. Features n Fully interchangeable with standard LM3524 family n ± 1% precision 5V reference with thermal shut-down n Output current to 200 mA DC n 60V output capability n Wide common mode input range for error-amp n One pulse per period (noise suppression) n Improved max. duty cycle at high frequencies n Double pulse suppression n Synchronize through pin 3 Connection Diagram 00865002 Top View Order Number LM2524DN or LM3524DN See NS Package Number N16E Order Number LM3524DM See NS Package Number M16A March 2005 © 2005 National Semiconductor Corporation DS008650 www.national.com |
Số phần tương tự - LM3524D |
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Mô tả tương tự - LM3524D |
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