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UM17515 の電気的特性と機能

UM17515のメーカーはUnion Semiconductorです、この部品の機能は「VLDO Linear Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 UM17515
部品説明 VLDO Linear Regulator
メーカ Union Semiconductor
ロゴ Union Semiconductor ロゴ 




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UM17515 Datasheet, UM17515 PDF,ピン配置, 機能
UM175XX
300mA, Micropower, VLDO Linear Regulator
UM175XX SOT23-5
General Description
The UM175XX series are VLDO (very low dropout) linear regulators designed for low power
portable applications. Typical output noise is only 75μVRMS and maximum dropout is just 90mV
at the load current of 150mA.The internal P-channel MOSFET pass transistor requires no base
current, allowing the device to draw only 100μA during normal operation at the maximum load
current of 300mA.
Other features include high output voltage accuracy, excellent transient response, under voltage
lockout, stability with ultralow ESR ceramic capacitors as small as 1μF, short-circuit and thermal
overload protection and output current limiting.
The UM175XX series are available in a low profile SOT23-5 package.
Applications
z Bluetooth/802.11 Cards
z PDAs and Notebook Computers
z Portable Instruments and
Battery-Powered Systems
z Cellular Phones
Features
z Very Low Dropout: 90mV(max) at 150mA
z Maximum Input Voltage: 6.0V
z Low Noise:75μVRMS (10Hz to 100kHz)
z ±2%Voltage Accuracy at 150mA
z Fast Transient Response
z Under Voltage Lockout
z Fixed Output Voltage:
3.3V/3.0V/2.8V/2.7V/2.5V/1.8V/1.5V/1.3V/
1.2V
z Output Current Limit
z No Protection Diodes Needed
z Stable with 1μF Output Capacitor
z Short-Circuit and Thermal Overload
Protection
z Low Profile SOT23-5 Package
Pin Configurations
Top View
UM175XX
M: Monthly Code
SOT23-5
________________________________________________________________________
http://www.union-ic.com Rev.02 Oct.2008
1/8

1 Page





UM17515 pdf, ピン配列
UM175XX
Electrical Characteristics
Symbol
Parameter
VIN
VUVLO1
Note1
VUVLO2
Note2
IQ
Input Voltage Range
Input Under Voltage
Lockout
Input Under Voltage
Lockout
Operating Quiescent
Current
I___________
SHDN
Shutdown Leakage
Current
ESD Rating
Test Conditions
VIN falling
VIN falling
IOUT=0mA
IOUT=300mA
Human Body Mode
Min
VOUT+
VDROP
2.0
2.1
Typ
90
100
2
Max
6.0
Unit
V
2.6 V
2.3 V
μA
1 μA
KV
IOUT Output Current
Output Voltage
Accuracy
ΔVDO
ILIMT
t
VIL
VIH
TSHDN
ΔTSHDN
Dropout Voltage
Output Current Limit
Startup Time
Response
___________
SHDN Input Low
Voltage
___________
SHDN Input High
Voltage
___________
SHDN Input Current
Thermal-Shutdown
Temperature
Thermal-Shutdown
Hysteresis
Line Regulation
Load Regulation
Output Voltage Noise
1mAIOUT150mA,
TA=+25
1mAIOUT150mA,
TA=-40to +85
1mAIOUT300mA,
TA=-40to +85
IOUT=150mA
VIN2.5V
RL=68, COUT=1μF
300
-1
-2
-2.5
450
20
___________
SHDN=VIN or GND
VOUT+1VVINVOUT+2V
IOUT=10mA
VIN=VOUT+1V
1mAIOUT150mA
10Hz to 100KHz
CIN=0.1μF, IOUT=10mA
F=100Hz
0.7×VIN
-1
70
0.1
160
20
0.09
0.2
75
mA
+1
+2 %
+2.5
90 mV
mA
μs
0.3×VIN V
V
+1 μA
%/V
%
μVR
MS
PSRR
Power Supply Ripple VIN=VOUT+1V F=1KHz
Rejection
IOUT=100mA F=10KHz
65
50
dB
F=100KHz
40
Note1: VUVLO1 is measured for devices with VOUT≥1.8V.
Note2: VUVLO2 is measured for devices with VOUT≤1.5V.
________________________________________________________________________
http://www.union-ic.com Rev.02 Oct.2008
3/8


3Pages


UM17515 電子部品, 半導体
UM175XX
Figure 2
Figure 3
Additionally, some ceramic capacitors have a piezoelectric response. A piezoelectric device
generates voltage across its terminals due to mechanical stress, similar to the way a piezoelectric
accelerometer or microphone works. For a ceramic capacitor the stress can be induced by
vibrations in the system or thermal transients. The resulting voltages produced can cause
appreciable amounts of noise, especially when a ceramic capacitor is used for noise bypassing.
________________________________________________________________________
http://www.union-ic.com Rev.02 Oct.2008
6/8

6 Page



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共有リンク

Link :


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