Product Information

L4976

L4976 electronic component of STMicroelectronics

Datasheet
Conv DC-DC 8V to 55V Step Down Single-Out 0.5V to 50V 1A 8-Pin PDIP Tube
Manufacturer: STMicroelectronics
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

17: USD 2.2204 ea
Line Total: USD 37.75

126 - Global Stock
Ships to you between
Wed. 22 May to Tue. 28 May
MOQ: 17  Multiples: 1
Pack Size: 1

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126 - WHS 1


Ships to you between Wed. 22 May to Tue. 28 May

MOQ : 17
Multiples : 1

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L4976
STMicroelectronics

17 : USD 2.3092

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Additional Infomation About Product

L4976 1A step down switching regulator Features Up to 1A step down converter Operating input voltage from 8v to 55v Precise 5.1V reference voltage DIP8 SO16W Output voltage adjustable from 0.5V to 50V Switching frequency adjustable up to 300kHz Description Voltage feedforward The L4976 is a step down monolithic power Zero load current operation switching regulator delivering 1A at a voltage Internal current limiting (pulse-bypulse between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed and hiccup mode) technology, the device uses an internal power D- Protection against feedback disconnection MOS transistor (with a typical R of 0.25) to ds(ON) Thermal shutdown obtain very high efficency and high switching speed. A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of todays applications. Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, protection against feedback loop disconnection and thermal shutdown. The device is available in plastic dual in line, MINIDIP 8 for standard assembly, and SO16W for SMD assembly. Figure 1. Typical application circuit Vi=8V to 55V 5 8 R 1 20K L4976 3 4 C C C 1 7 2 L1 7 1 6 2 V =3.3V/1A 220F 220nF 2.7nF O 260H 63V (77120) C 6 R D1 2 100nF C 9.1K GI 8 330F SB360 C 4 22nF April 2007 Rev 7 1/17 www.st.com 17Contents L4976 Contents 1 Block diagram 3 2 Pin settings 4 2.1 Pin connection 4 2.2 Pin description 4 3 Electrical data 5 3.1 Maximum ratings 5 3.2 Thermal data . 5 3.3 Operating temperature rating . 5 4 Electrical characteristics . 7 5 Typical charcteristics 9 6 Package mechanical data 13 7 Order code 16 8 Revision history . 17 2/17

HS Compliance

Tariff Desc

8542.31.00 51 No ..Application Specific (Digital) Integrated Circuits (ASIC)

Electronic integrated circuits: Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
Monolithic integrated circuits:

Stmicroelectronics may also be referenced as

C-Max
C-Max (VA)
SG3
ST
ST MICROELECTRONICS
ST2
ST7
STM
STMICRELECTRONICS
STN

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