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PDF AME8843 Data sheet ( Hoja de datos )
| Número de pieza | AME8843 | |
| Descripción | 750mA CMOS LDO | |
| Fabricantes | AME | |
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AME
AME8843
n General Description
The AME8843 family of positive, linear regulators fea-
ture low quiescent current (30µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT-223 package is attractive for "Pocket"
and "Hand Held" applications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" operating conditions.
The AME8843 is stable with an output capacitance of
2.2µF or greater.
750mA CMOS LDO
n Functional Block Diagram
IN OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
AMP
n Features
l Very Low Dropout Voltage
l Guaranteed 750mA Output
l Accurate to within 1.5%
l 30µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Space-Saving SOT-223 Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
l All AME's Lead Free Products Meet RoHS
Standards
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
Vref=1.215V
R2
GND
n Typical Application
IN
IN AME8843 OUT
GND
C1
5V
1µF
OUT
C2
2.2µF
Rev. A.02
1
1 page  
AME
AME8843
750mA CMOS LDO
n Electrical Specifications
TA = 25OC unless otherwise noted
Parameter
Symbol
Test Condition
Min Typ Max Units
Input Voltage
VIN
Note 1
7V
Output Voltage Accuracy
VO
IO=1mA
-1.5 1.5 %
Dropout Voltage
IO=750mA
VDROPOUT VO=VO(NOM) -2.0%
1.3V<=VO(NOM) <=1.4V
1.4V<VO(NOM) <=2.0V
2.0V<VO(NOM) <=2.8V
1900
See 1400
chart 1000
mV
2.8V<VO(NOM)
750
Output Current
IO
VO>1.2V
750 mA
Current Limit
ILIM
VO>1.2V
1500 2000
mA
Short Circuit Current
ISC
VO<0.8V
750 mA
Quiescent Current
IQ
IO=0mA
30 50 µA
Ground Pin Current
IGND
IO=1mA to 750mA
35 µA
Line Regulation
IO=1mA
REGLINE VIN=VO+1 to VO+2
1.3V <= VO <= 1.4V
1.4V < VO <= 2.0V
2.0V < VO < 4.0V
-0.2 0.2
-0.15
0.15
-0.1 0.02 0.1
%
4.0V <= VO
-0.4 0.2 0.4
Load Regulation
REGLOAD
Over Temperature Shutdown OTS
IO=1mA to 750mA
0.2 1
150
%
oC
Over Temperature Hysterisis OTH
30 oC
VO Temperature Coefficient
TC
30 ppm/oC
Power Supply Rejection
PSRR
IO=100mA
CO=2.2µF
f=100Hz
f=1kHz
f=10kHz
60
50 dB
20
Output Voltage Noise
f=10Hz to 100kHz
eN IO=10mA,CBYP=0µF
Co=2.2µF
30 µVrms
Note1: VIN(MIN)=VOUT+VDROPOUT
Note2: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be
applied before a current source load is applied.
Rev. A.02
5
5 Page 
www.ame.com.tw
E-Mail: [email protected]
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
© AME, Inc. , November 2008
Document: 2013-DS8843-A.02
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AME8843.PDF ] | |
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