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PDF AME8831 Data sheet ( Hoja de datos )
| Número de pieza | AME8831 | |
| Descripción | Low-Quiescent LDO | |
| Fabricantes | Asahi Kasei Microsystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AME8831 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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AME, Inc.
AME8831
www.DataSheet4U.com
150mA Hi-PSRR, Low-Quiescent LDO
with In-Rush Current Control
For USB Application
n General Description
The AME8831 family of positive, linear regulators fea-
ture low quiescent current (17µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT-25 package is attractive for “ Pocket”
and “ Hand Held” applications.
These rugged devices have both Thermal Shutdown,
and Current limitation to prevent device failure under the
“ Worst” of operating conditions. In applications requires
a low noise regulated supply. The AME8831 family uses
the SR pin to program the output voltage’ s slew rate to
control the in-rush current. This is specifically used in
the USB application where large load capacitance is
present at start-up.
The AME8831 also features a logic-enabled sleep mode
to shutdown the regulator, reducing quiescent current to
1µA typical at TA= 25oC.
The AME8831 is stable with an output capacitance of
4.7µF or larger.
n Features
l Guaranteed 150mA Output
l Dropout Voltage Typically 150 mV at 150 mA
l 17µA Quiescent Current
l Over-Temperature Shutdown
l Over-Current Limitation
l Noise Reduction Bypass Capacitor
l Power-Saving Shutdown Mode
l Space-Saving SOT-25 Package
l Factory Pre-set Output Voltages
l Enable pin option
l EN active low enable
l EN active high enable
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
l Electronic Scales
n Function Block Diagram
VIN
* EN or EN
10 k
Vref
GND
AMP
Current Limit
/ Thermal
Protection
SR
* AME8831A: EN, AME8831B: EN
VOUT
R1
R2
n Typical Application
V IN
1µ F
VIN SR
AME8831A
EN GND VOUT
+
4.7µF
0.01µF
1µ F
VIN
VIN
VIN SR
AME8831B
EN GND VOUT
+
4.7µF
0.01µF
1
1 page  
AME, Inc.
AME8831
www.DataSheet4U.com
150mA Hi-PSRR, Low-Quiescent LDO
with In-Rush Current Control
For USB Application
n Electrical Specifications (contd.)
EN=0, TJ = -40 to +125oC, VIN = VOUT(typ) +1V, IOUT = 1mA, COUT = 4.7µF, C(SR) = 0.01µF (unless otherwise noted)
Parameter
Symbol
Test Condition
Min Typ Max Units
Input Voltage
Output Voltage
VIN
VOUT
(See Note1)
3.5
TJ = 25oC
10µA < IOUT < 150mA
3.8V < VIN < 5.5V
TJ = -40oC to +125oC 3.201
5.5
3.3
3.399
V
V
Output Current
Output Current Limit
Quiescent Current
Line Regulation
(See Note 3)
IOUT (See Note2) 0 150 mA
ILIM
VOUT = 0V
200 350 750 mA
10µA < IOUT < 150mA
TJ = 25oC
IQ 10µA < IOUT < 150mA TJ = -40oC to +125oC
17
µA
30
REGLINE
4.3V<VIN<5.5V
4.3V<VIN<5.5V
TJ = 25oC
-0.2 0.1 0.2
%/V
TJ= -40oC to +125oC -0.3
0.3
Load Regulation
(See Note 4)
REGLOAD 1mA <= IOUT <= 150mA
TJ = 25oC
-0.02 0.0025 0.02 %/mA
Dropout Voltage
Over Temerature Shutdown
Over Temerature Hysterisis
VDO
OTS
TJ = 25oC
VOUT = VOUT(NOM) -2.0% TJ = -40oC to +125oC
OTH
150
mV
300
150
oC
20
VOUT Temperature Coefficient
TC
30 ppm
Power Supply Ripple
Rejection
PSRR
f = 1 kHz, IOUT = 150mA
COUT =10µF,
C(SR) = 0.01µF
TJ = 25oC
65 dΒ
Note1 : VIN(min) = VOUT(min) + VDO (maxload)
Note2 : Continuous output current and operating junction temperature are limited by internal protection circuitry,
but it is not recommended that the device operate under conditions beyond those specified in this table for
extended periods of time.
Note3: Line Reg:
∆Vout
∆Vin
×100%
Vout
Note4: Load Reg:
∆Vout ×100%
Vout
∆I
5
5 Page 
AME, Inc.
AME8831
n Tape and Reel Dimension
TSOT-25
P
www.DataSheet4U.com
150mA Hi-PSRR, Low-Quiescent LDO
with In-Rush Current Control
For USB Application
PIN 1
AME
AME
W
Carrier Tape, Number of Components Per Reel and Reel Size
Package
TSOT-25
Carrier Width (W)
8.0±0.1 mm
Pitch (P)
4.0±0.1 mm
Part Per Full Reel
3000pcs
Reel Size
180±1 mm
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AME8831.PDF ] | |
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