US1261CM ETC-unknow, US1261CM Datasheet

no-image

US1261CM

Manufacturer Part Number
US1261CM
Description
Manufacturer
ETC-unknow
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
US1261CM
Manufacturer:
UMISEM
Quantity:
5 510
Part Number:
US1261CM
Manufacturer:
UNISEM
Quantity:
1 000
Part Number:
US1261CM
Manufacturer:
UNISEM
Quantity:
20 000
FEATURES
APPLICATIONS
TYPICAL APPLICATION
PACKAGE ORDER INFORMATION
FEATURES
APPLICATIONS
TYPICAL APPLICATION
PACKAGE ORDER INFORMATION
Rev. 1.7
3/22/99
Guaranteed to provide 1.5V and 2.5V Sup-
plies with 3.1V input.
Fast Transient Response
1% Voltage Reference Initial Accuracy
Built in Thermal Shutdown
Pentium II Processor Applications
1261app1-1.3
0 TO 150
Tj (
°
C)
Typical application of US1261 in a Pentium II processor application
US1261
3.3V
5V
5 PIN PLASTIC
US1261CT
TO220(T)
Vout1
Vout2
Vctrl
Gnd
Vin
R1
POSITIVE FIXED OUTPUT REGULATOR
C1
5
4
3
2
1
DUAL 6A AND 1A LOW DROPOUT
5 PIN PLASTIC
DESCRIPTION
DESCRIPTION
The US1261 product using a proprietary process com-
bines a dual low dropout regulators with fixed outputs of
1.5V and 2.5V in a single package with the 1.5V out-
put having a minimum of 6A and the 2.5V having a 1A
output current capability. This product is specifically de-
signed to provide well regulated supplies from 3.3V to
generate 1.5V for GTL+ termination resistor supply
and 2.5V clock supply for the new generation of
the Pentium II processor applications.
C2
US1261CM
TO263(M)
POWER FLEX(P)
5 PIN PLASTIC
US1261CP
C3
C4
2.5V / 1A
1.5V / 6A
US1261
3-1

Related parts for US1261CM

US1261CM Summary of contents

Page 1

... GTL+ termination resistor supply and 2.5V clock supply for the new generation of the Pentium II processor applications Vout1 4 Vin 3 Gnd C2 2 Vout2 1 Vctrl R1 5 PIN PLASTIC 5 PIN PLASTIC TO220(T) TO263(M) US1261CT US1261CM US1261 2. 1. PIN PLASTIC POWER FLEX(P) US1261CP 3-1 ...

Page 2

US1261 ABSOLUTE MAXIMUM RATINGS ABSOLUTE MAXIMUM RATINGS Input Voltage (Vin) ............................................................. Power Dissipation ............................................ Storage Temperature Range ................................ Operating Junction Temperature Range ...................... 150 C PACKAGE INFORMATION PACKAGE INFORMATION 7 PIN PLASTIC TO220 FRONT VIEW 5 Vout1 ...

Page 3

PIN DESCRIPTIONS PIN DESCRIPTIONS PIN # PIN SYMBOL PIN DESCRIPTION 2 Vout2 The output #2 (high current) of the regulator. A minimum of 100uF capacitor must be connected from this pin to ground to insure stability. 5 Vout1 The output ...

Page 4

US1261 APPLICATION INFORMATION APPLICATION INFORMATION Introduction The US1261 is a dual fixed output Low Dropout (LDO) regulator available pin TO-220 or TO-263 pack- ages. This voltage regulator is designed specifically for PentiumII processor applications requiring 2.5V and ...

Page 5

The following heat sinks from AAVID and Thermaloy meet this crite- ria. Air Flow (LFM) 0 100 200 Thermalloy 7021B 7020B 6021PB AAVID ...

Page 6

... Gnd C2 2 Vout2 1 Vctrl R1 design with the 1.5V output providing for GTL+ termination while 2.5V supplies the clock chip. Qty Part # 1 US1261CM 2 Elect,680uF,EEUFA1A681L 1 Elect,220uF,6.3V,ECAOJFQ221 1 Ceramic,1uF,16V,Z5U 0805 SMT 2)For Iout2<3A & Iout1<0.5A Use US1261CT and Thermalloy 6030B 3)For Iout2<5.4A & Iout1<0.5A Use US1261CT and Thermalloy 7021B 2 ...

Related keywords