Switching Voltage Regulators

Features

 3.3V, 5V, 12V, and adjustable output versions

 Adjustable version output voltage range, 1.2V to 37V

± 4% max over line and load conditions

 Guaranteed 3A output load current

 Input voltage range up to 40V

 Requires only 4 external components

 Excellent line and load regulation specifications

 150kHz fixed frequency internal oscillator

 TTL shutdown capability

 Low power standby mode,

IQ typically 100A

 Thermal shutdown and current limit protection

TO-220-5L

JM2596T-XX

TO-263-5L

JM2596S-XX

Functions

 Simple high-efficiency step-down regulator

 On-card switching regulators

 Positive to negative converter

Description

The JM2596 series of regulators are monolithic integrated circuits that provide all the

active functions for a step-down switching regulator, capable of driving a 3A load with excellent

line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V,

12V and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use.

The JM2596 series operates at a switching frequency of 150kHz. Available in standard 5-lead

TO-220 package.

Other features include a guaranteed ± 4% tolerance on output voltage under specified input

voltage and output load conditions, and ± 15% on the oscillator frequency. External shutdown is

included, featuring typically 100A standby current. Self protection features include a two stage

frequency reducing current limit for output switch and an over temperature shutdown for complete

protection under fault conditions. The over temperature shutdown level is about 145

o

C with 5

o

C

hysteresis. 

Absolute Maximum Rating

(TA = 25

o

C)

Characteristic Symbol Value Unit

Maximum Input Supply Voltage VI 45 V

ON/OFF Pin Input Voltage VIN -0.3  V  +25 V

Feedback Pin Voltage -0.3  V  +25 V

Output Voltage to Ground VO -1 V

Power Dissipation PD Internally limited W

Storage Temperature Range Tstg -65 to +150

o

C

Operating Temperature Range TJ 40  TJ  +125

o

C

Operating Supply Voltage VIN 4.5 to 40 V

* Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.

These are stress ratings only and functional operation of the device at these or any other conditions beyond those

indicated under “recommended operating conditions” is not implied.

Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 

图片不供参考  可提供规格书

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Leven Cai 蔡明柱

深圳市奥伟斯科技有限公司

OWEIS ELECTRONICS Co., LIMITED.

址址:深圳市福田区深南中路3006号佳和华强大厦A座7楼701-703室

ADD:Rm701-703, Block A, Jiahe huaqiang Bldg., Shennan zhong Rd., Futian District, Shenzhen, Guangdong, China  518000

E-Mail : leven@oweis-tech.com  

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www.oweis-tech.cn

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