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UC2577TDTR-ADJG3, UC2578, UC2578DPG4

Table of contents:
Info of UC2577TDTR-ADJG3
Info of UC2578
Info of UC2578DPG4

UC2577TDTR-ADJG3, UC2578, UC2578DPG4 Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:TO-263 5 D/C:08+

UC2577TDTR-ADJG3, UC2578, UC2578DPG4 Picture

UC2577TDTR-ADJG3, UC2578, UC2578DPG4 Datasheet download

Five Points

Part Number: UC2577TDTR-ADJG3

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: TO-263 5

D/C: 08+

Description: IC VOLT REG BUCK PWM 16-SOIC

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UC2577TDTR-ADJG3 Parameters

Technical/Catalog Information	UC2577TDTR-ADJG3
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Type	Step-Up (Boost), FlyBack, Forward Converter
Number of Outputs	1
Voltage - Input	3 ~ 40 V
Voltage - Output	5 ~ 60 V
Current - Output	3A
Power - Output	-
Package / Case	D²Pak, SMD-220, TO-263 (5 leads + tab)
Packaging	Tape & Reel (TR)
Internal Switch(s)	Yes
Synchronous	No
Rds (On)	-
Operating Temperature	-40°C ~ 125°C
Frequency - Switching	52kHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC2577TDTR ADJG3 UC2577TDTRADJG3

UC2578 General Description

The UC3578 is a PWM controller with an integrated high side floating gate river. It is used in buck step down converters and regulates a positive utput voltage. Intended to be used in a distributed power system, the IC llows operation from 14V to 72V input voltage which range includes the revalent telecomm bus voltages. The output duty cycle of the UC3578 an vary between 0% and 90% for operation over the wide input voltage nd load conditions.

The UC3578 simplifies the design of the single switch PWM buck converter y incorporating a floating high side driver for an external N-channel OSFET switch. It also features a 100kHz fixed frequency oscillator, an nternal 2V precision reference, an error amplifier configured for voltage ode operation, and a PWM comparator with latching logic. Complementing he traditional voltage mode control block, the UC3578 incorporates n overcurrent shutdown circuit with full cycle soft re-start to limit the nput current to a user defined maximum value during overload operation. dditional functions include an under voltage lockout circuit to insure that ufficient input supply voltage is present before any switching activity can ccur.

The UC2578 and the UC3578 are both available in surface mount and hru-hole power packages.

UC2578 Maximum Ratings

VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +72V
EAINV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.3V to +10V
EAOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to +10V
SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 0.3V to +10V
DIODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to VCC
VGG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to VCC +14V
CS. . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC 5V to VCC +0.6V
I_OUTPulsed . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8A to +0.6A
SRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6V to VCC
Storage Temperature . . . . . . . . . . . . . . . . . -65°C to +150°C
Junction Temperature. . . . . . . . . . . . . . . . . 55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . .. . . +300°C

Currents are positive into, negative out of the specified terminal.
Consult Packaging Section of Databook for thermal limitations nd considerations of packages

UC2578 Features

· Provides Simple Single Inductor Buck WM Step-Down Voltage Regulation
· Drives External High Side NMOS witch
· 14V to 72V Input Voltage Operating ange
· Contains 100kHz Internal Oscillator,2V Reference and UVLO
· Soft Start on Power Up
· Overcurrent Shutdown Followed by oft Start

UC2578 Connection Diagram

UC2578DPG4 Parameters

Technical/Catalog Information	UC2578DPG4
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	15 ~ 40 V
Voltage - Output	12V
Current - Output	3A
Power - Output	-
Package / Case	16-SOIC (3.9mm Width)
Packaging	Tube
Internal Switch(s)	No
Synchronous	No
Rds (On)	-
Operating Temperature	-40°C ~ 85°C
Frequency - Switching	110kHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC2578DPG4 UC2578DPG4

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