most robust design smallest package extends your application power cap

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

most robust design smallest package extends your application power cap

Datasheet Thumbnail

Top Searches for this datasheet

2.5A Switching Step Down Regulators Package
most robust design smallest package extends your application power capability
L597x family composed three monolithic step-down switching regulators capable delivering more than housed small outline packages SO8. input voltage range (from 4.4V compatible with commonest voltage buses (5V/12V/24V), output voltage adjusted from 1.235V 35V. output voltage +-3% precision included: line, load temperature. integrated P-channel requires external bootstrap capacitor allows 100% duty cycle. 250mOhm RDSON leads optimization conduction losses. package choice been differentiated according output current requirements. L5970D housed standard deliver more than output current. L5973D uses with exposed slug (Rthj-amb 40°C/W), thanks very good thermal performance allows output current 2.5A, keeping full feature set. Midway, L5972D using standard package with four grounded pins, allows output current 1.5A. technology used allows very high efficiency overall output power conditions thanks minimization current consumption: quiescent current guaranteed below 2.5mA max, standby current consumption range 50µA.
Features More than package with minimum external component count P-channel power MOS: bootstrap capacitor Wide input voltage range (4.4V 36V) Internal 250KHz switching frequency Synchronization 500KHz) External compensation network Inhibit L597x main applications Consumer: DVD, monitor, Computer peripherals: printer, audio/graphic cards, optical storage, memories Networking: modems, XDSL, Portable instruments Distributed power system Automotive: multimedia supply, radio
[*]: L5970D L5973D
switching frequency internally fixed 250KHz, allowing considerable reduction size cost passive components PCB. This fact together with minimum number external components required leads very small compact solutions.
Other available features common whole family are: constant current protection, overvoltage protection, thermal shutdown voltage feedforward. L5970 L5973 offer also precise reference voltage, synchronization inhibit function.
Step Down Switching Regulators
Device Io(A) (KHz) Efficiency Special Functions Current Limiting Inhibit Synch. Other Package
L5970D L5972D L5973D L4976 L4971 L5971 L4978
(fixed) (fixed) (fixed)
Pulse pulse frequency foldback Pulse pulse frequency foldback Pulse pulse frequency foldback Pulse pulse Pulse pulse hiccup mode Pulse pulse hiccup mode Pulse hiccup Pulse hiccup Pulse hiccup pulse mode pulse mode pulse mode
500KHz
3.3V Vref/OVP
DIP8 SO16W DIP8 SO16W DIP8 SO16W DIP8 SO16W DIP18 SO20 DIP18 SO20 DIP8 DIP18 SO20 DIP20 SO20
1.235
500KHz
3.3V Vref/OVP 5.1V Vref.
1.26
L4973V3.3 L4973V5.1
5.1V Vref/OVP 5.1V Vref/OVP Reset +p.fail Reset +p.fail Reset +p.fail
L4962 L4963 L4972 L4960 L4974A L296/P L4975A L4977A L4970A
Hiccup mode Constant current True current/generator Hiccup mode True current/generator Hiccup mode True current/generator True current/generator True current/generator
Free Running
Reset +p.fail Crowbar Reset Reset +p.fail Reset +p.fail Reset +p.fail
SO20 MW15 MW15 MW15 MW15
OREDR CODE: FL597X/0502
Recycled chlorine free paper
©STMicroelectronics 2002 Printed Italy rights reserved STMicroelectronics corporate logo registered trademark STMicroelectronics group companies. other names property their respective owners.
France 55489569; Germany 4605454; Italy 8250449; Japan 57838216; Singapore 64815124; Sweden 7504950; Switzerland 9292900; United Kingdom Eire 1628 890391; 2678
selected STMicroelectronics sales offices fax:
Full product information www.st.com/powersupply

most robust design smallest package extends your application power cap

Top Searches for this datasheet

Other recent searches