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參數(shù)資料
| 型號(hào)： | SC1566IT-X.XT |
| 廠商： | Semtech Corporation |
| 英文描述： | Very Low Dropout 3.0 Amp Regulator With Enable |
| 中文描述： | 非常低壓差穩(wěn)壓器以及3.0安培啟用 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 265K |
| 代理商： | SC1566IT-X.XT |
1
www.semtech.com
SC1566
Very Low Dropout
3.0 Amp Regulator With Enable
POWER MANAGEMENT
Description
VIN
ENABLE
VO = See equation below
C1
C2
R1
R2
U1
SC1566I5T-2.5
1
2
3
4
5
VIN
EN
GND
ADJ
VO
VIN
ENABLE
VO = 2.5V
C1
C2
U1
SC1566I5T-2.5
1
2
3
4
5
VIN
EN
GND
ADJ
VO
VIN
VO = 1.8V
C1
C2
U1
SC1566IT-1.8
1
2
3
VIN
GND
VO
Revision: April 27, 2005
The SC1566 is a high performance positive voltage
regulator designed for use in applications requiring very
low dropout voltage at up to 3 Amps. Since it has
superior dropout characteristics compared to regular
LDOs, it can be used to supply 2.5V on motherboards or
2.8V on peripheral cards from the 3.3V supply thus
allowing heat sink size reduction or elimination.
Additionally, the five pin versions of SC1566 have an
enable pin, to further reduce power dissipation while shut
down. The SC1566 provides excellent regulation over
variations in line, load and temperature.
The SC1566 is available as three terminal fixed output
voltage and five terminal fixed or adjustable output
voltage devices with enable. Two package options are
available: TO-263 and TO-220.
350mV dropout @ 3A
Adjustable output from 1.2V to 4.8V
2.5V and 1.8V options (5 pin parts also adjustable
externally using resistors)
Over current and over temperature protection
Enable pin
10μA quiescent current in shutdown
Low reverse leakage (output to input)
Full industrial temperature range
TO-220 and TO-263 packages
Battery powered systems
Motherboards and notebook computers
Peripheral cards
Network cards
Set top boxes
Medical equipment
Volts
R2
R2)
(R1
1.200
VO
+
=
Features
Applications
Typical Application Circuits
(1)(2)
Notes:
(1) Maximum VO setpoint for 1.8V parts = 5.4V
(2) This device is designed to operate with
ceramic input and output capacitors
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