UC3848L-D08-T datasheet(8/11 Pages) UTC

Part #	UC3848L-D08-T

Description	HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Download	11 Pages

Scroll/Zoom	100%

Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

Logo

8 / 11 page

UC3848

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

8 of 11

www.unisonic.com.tw

QW-R103-033.F

FUNCTIONAL DESCRIPTION(Cont.)

(7)Protection section (Cont.)

OLP

After soft-start phase end, IC will shutdown driver if over load state occurs for continual TD-OLP. OLP function will

not inactive during soft-start phase. OLP case as followed FIG. 6. The test circuit as followed FIG.8. TD-OLP=5.53×TSS.

OVP

There are two kinds of OVP circuits, the first OVP function are enabled only when VSS<VSS (DEACT) &

VFB>VFB(OLP) during soft-start phase. During above condition, driver will be shutdown if over voltage state occurs

(VCC>VOVP1) for continual a blanking time. The first OVP function will not inactive after soft-start phase. The second

OVP will shutdown the switching of the power MOSFET whenever VCC>VOVP2. The first OVP case as followed FIG.7.

The test circuit as followed FIG. 9.

FIG.6 OLP case

FIG.7 OVP case

FIG.8 OLP test circuit

FIG.9 OVP test circuit

Similar Part No. - UC3848L-D08-T

Manufacturer	Part #	Datasheet	Description
E-Tech Electronics LTD	UC3848L-D08-T	596Kb / 11P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Unisonic Technologies	UC3848L-D08-T	596Kb / 11P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Manufacturer	Part #	Datasheet	Description
Motorola, Inc	UC3842B	401Kb / 16P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Freescale Semiconductor...	MC34129EF	444Kb / 16P	high performance current mode controllers
ON Semiconductor	UC3844BNG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3845BDR2G	387Kb / 19P	High Performance Current Mode Controllers December, 2012 ??Rev. 11
	UC3845BVDG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3845BVDR2G	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
	UC3844BVDG	399Kb / 19P	High Performance Current Mode Controllers August, 2013 ??Rev. 11
Unisonic Technologies	UC3842B	518Kb / 11P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Motorola, Inc	UC3844	376Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
ON Semiconductor	UC3842A	399Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS 1996 REV 1
ON Semiconductor	UC3844	376Kb / 14P	HIGH PERFORMANCE CURRENT MODE CONTROLLERS 1996 REV 1