产品概述
描述
The L4972A is a stepdown monolithic power switching regulator delivering 2A at a voltage variable from 5.1 to 40V.
Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4972 include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a Powerdip 16 + 2 + 2 and SO20 large plastic packages and requires few external components. Efficient operation at switching frequencies up to 200KHz allows reduction in the size and cost of external filter component.
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所有功能
- PWM LATCH FOR SINGLE PULSE PER PERIOD
- UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
- SWITCHING FREQUENCY UP TO 200KHz
- VERY HIGH EFFICIENCY
- CONTINUOUS MODE OPERATION
- THERMAL SHUTDOWN
- RESET AND POWER FAIL FUNCTIONS
- PRECISE 5.1V ± 2% ON CHIP REFERENCE
- 2A OUTPUT CURRENT
- 0 TO 90% DUTY CYCLE RANGE
- 5.1V TO 40V OUTPUT VOLTAGE RANGE
- INTERNAL CURRENT LIMITING
- INPUT/OUTPUT SYNC PIN
- INTERNAL FEED-FORWARD LINE REG.
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EDA符号、封装和3D模型
STMicroelectronics - L4972
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符号
封装
3D模型
样片和购买
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| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L4972AD013TR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | SO-20 | - | - | MALAYSIA | | ||
distributors
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