參數(shù)資料
型號: SC1456XIMSTRT
廠商: Semtech Corporation
英文描述: Dual 150mA Ultra Low Dropout, Low Noise Regulator
中文描述: 雙150mA的超低壓差,低噪聲穩(wěn)壓器
文件頁數(shù): 1/10頁
文件大小: 202K
代理商: SC1456XIMSTRT
POWER MANAGEMENT
Description
1
www.semtech.com
SC1456
Dual 150mA Ultra Low
Dropout, Low Noise Regulator
Revision: November 16, 2005
The SC1456 contains two low dropout linear regulators
that operate from a +2.5V to +6V input range and
deliver up to 150mA. PMOS pass transistors allow a low
110μA supply current per device to remain independent
of load, making these devices ideal for battery operated
portable equipment such as cellular phones, cordless
phones and personal digital assistants.
Each device can be powered from a separate supply
voltage or the same supply voltage for maximum
flexibility. The output voltage of each device can be
preset or adjusted with an external resistor divider. Other
features include independant low powered shutdown,
short circuit protection, thermal shutdown protection and
reverse battery protection for each regulator. The
SC1456 comes in the tiny 10 lead MSOP package (lead
free, fully WEEE and RoHS compliant available).
Battery Powered Systems
Cellular Telephones
Cordless Telephones
Personal Digital Assistants
Portable Instrumentation
Modems
PCMCIA cards
Two guaranteed 150 mA outputs
Designed to operate with ceramic capacitors
Fixed or adjustable outputs
Very small external components
Low 75μV
RMS
output noise
Very low supply currents
Thermal overload protection
Reverse battery protection
Individual low power shutdown
Full industrial temperature range
Surface mount packaging (10 pin MSOP)
VOUT1 = PRESET
VOUT2 = PRESET
VIN2
VIN1
C1
1uF
C4
1uF
C2
1uF
C3
1uF
U1
SC1456
1
2
3
4
5
6
7
8
9
10
EN1
GND
SET1
OUT2
IN2
EN2
GND
SET2
OUT1
IN1
(OR VIN1)
VOUT1 (SEE EQUATION)
VOUT2 = PRESET
VIN1
VIN2
U1
SC1456
1
2
3
4
5
6
7
8
9
10
EN1
GND
SET1
OUT2
IN2
EN2
GND
SET2
OUT1
IN1
C1
1uF
C3
2.2uF
C4
1uF
C2
1uF
R1
R2
(OR VIN1)
Features
Applications
Typical Application Circuits
+
=
k
120
2
R
2
R
1
R
1
250
.
V
1
OUT
Output Voltages Set Internally
Output 1 Set Externally and Output 2 Set Internally
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