Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

US2075 Datasheet(PDF) 3 Page - UNISEM

Part No. US2075
Description  PWM SWITCHER CONTROLLER & 7.5A LOW DROPOUT REGULATOR COMBO
Download  4 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  UNISEM [UNISEM]
Homepage  
Logo 

US2075 Datasheet(HTML) 3 Page - UNISEM

   
Zoom Inzoom in Zoom Outzoom out
 3 / 4 page
background image
US2075
4-3
Rev. 1.2
4/26/98
PIN DESCRIPTIONS
PIN DESCRIPTIONS
PIN #
PIN SYMBOL
PIN DESCRIPTION
3
Vfb
A resistor divider from this pin to the output of the switching regulator and
ground sets the core supply voltage.
6
Vout
The output of the linear regulator. A minimum of a 10uF capacitor must be
connected from this pin to ground to insure stability. This voltage is set at 3.30V typ.
7
V5
The input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to insure that the input voltage does not sag below the minimum
drop out voltage during the load transient response. This pin must always be 1.3V
higher than Vout in order for the device to regulate properly.
4
Gnd
This pin is connected to the IC substrate and must be connected to the lowest
potential in the system. It is also connected to the Tab of the package. A high
frequency capacitor must be connected from V12 to this pin to insure proper operation.
1
Drv
The PWM output of the switching controller. This pin is a totem pole drive that is
connected to the gate of the power MOSFET. A resistor may be placed from this
pin to the gate in order to reduce switching noise.
5
Vhyst
A resistor is connected from this pin to the Vfb pin to set the output ripple voltage.
See application note for more details.
2
V12
This pin is connected to the 12V supply voltage A high frequency cap must be
connected from this pin to the GND pin of the IC.
BLOCK DIAGRAM
BLOCK DIAGRAM
Figure 1 - Simplified block diagram of the US2075
Note 1 : Low duty cycle pulse testing with Kelvin con-
nections are required in order to maintain accurate data.
Vref
7.5A LDO
UVLO
1.25V
PWM Control
V12
Vhyst
V5
Drv
Gnd
Vfb
Vout
4
1
2
5
3
7
6
2075blk1-1.0


Html Pages

1  2  3  4 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn