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PDF EUP7987 Data sheet ( Hoja de datos )
| Número de pieza | EUP7987 | |
| Descripción | 300mA Low-Noise LDO | |
| Fabricantes | Eutech Microelectronics | |
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EUP7987
300mA Low-Noise Ultra Low-Dropout
CMOS Regulator
DESCRIPTION
The EUP7987 low-noise, low-dropout, linear
regulator operates from a 2.5V to 5.5V input and is
guaranteed to deliver 300mA.
The EUP7987 is stable with small 2.2µF ceramic
capacitor. Its performance suits battery powered
applications because of its shutdown mode (60 nA
www.Dtaytpa)S,hleoewt4Uq.cuoimescent current (110µA typ), and LDO
voltage (140mV typ). The low dropout voltage
allows for more utilization of a battery’s available
energy by operating closer to its end-of-life voltage.
The EUP7987 is available in 1.8V, 2.5v, 2.8V, 3V,
3.3V, and adjustable versions.
FEATURE
z 300mA Guaranteed Output Current (500mA for
Pulsed Loads)
z 60dB PSRR at 1kHz
z 50µ VRMS Output Voltage Noise
z 140mV Dropout at 300mA Load
z Low 110µA No-Load Supply Current
z ≤ 1µA Shutdown Current
z Fast Start-up Time
z Stable With 2.2µF Ceramic Output Capacitors
z Thermal Shutdown and Short-Circuit Protection
z SOT23-5 and SOT23-6 Package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z Wireless Handsets
z DSP Core Power
z Battery Powered Electronics
z Portable Information Appliances
Block Diagram
DS7987 Ver 1.5 May .2005
Figure1.
1
1 page  
EUP7987
Absolute Maximum Ratings
VIN, VOUT, VSHDN , VSET , VCC,
----------------------------------------------------------- -0.3V to 6V
Storage Temperature Range ------------------------------------------------------------- -65°C to 160°C
Junction Temperature (TJ) ------------------------------------------------------------------------ 150°C
Lead Temperature (10 sec.) ------------------------------------------------------------------------- 260°C
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for VIN= VO +0.5V, VSHDN=VIN, CIN=COUT=2.2µF, CCC=22nF,
TJ =25°C. (Boldface limits apply for the operating temperature extremes: -40°C and 85°C)
Symbol
Parameter
www.DaVtaISNheet4IUn.pcuomt Voltage
∆ VO Output Voltage Tolerance
VO
IO
ILIMIT
IQ
Output Adjust Range
Maximum Output Current
Output Current Limit
Supply Current
Shutdown Supply Current
VDO Dropout Voltage
∆ VO
en
Line Regulation
Load Regulation
Output Voltage Noise
VSHDN SHDN Input Threshold
ISHDN
ISET
TSD
SHDN Input Bias Current
SET Input Leakage
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TON Start-Up Time
PSRR Power Supply Rejection Ratio
Conditions
EUP7987
Min Typ Max.
100µA ≤ IOUT ≤ 300mA
VIN=VO+0.5V,
SET= OUT for the Adjust Versions
Adjust Version Only
Continuous
10ms pulse
2.5
-2
-3
1.25
300
IOUT=0mA
IOUT=300mA
VO =0V, SHDN =GND
IOUT =1mA
IOUT =200mA
IOUT =300mA
IOUT = 1mA, (VO +0.5V) ≤ VI
≤ 5.5V
100µA ≤ IOUT ≤ 300mA
IOUT =10mA, 10Hz ≤ f
≤ 100kHz
VIH,(VO+0.5V) ≤ VI ≤ 5.5V
VIL,(VO+0.5V) ≤ VI ≤ 5.5V
SHDN =GND or IN
SET = 1.3V, Adjust Version Only
-0.1
1.6
500
600
110
240
0.06
0.4
90
140
0.05
0.002
50
0.1
0.1
5.5
+2
+3
5.5
200
1
200
0.1
0.4
100
2.5
160
20
COUT =10µF, VO at 90% of Final
Value
VIN=VOUT+0.5V, f=1kHZ
80
60
Unit
V
% of
VOUT(NOM)
V
mA
mA
mA
µA
µA
mV
%/V
%/mA
µVRMS
V
nA
nA
°C
µs
dB
DS7987 Ver 1.5 May .2005
5
5 Page 
SOT23-6
EUP7987
www.DataSheet4U.com
SYMBOLS
A
A1
A2
b
C
D
E
E1
e
E1
L
L1
L2
R
R1
1
DS7987 Ver 1.5 May .2005
DIMENSIONS IN MILLIMETERS
MIN.
NOM.
------ ------
------ ------
0.90 1.15
0.30 ------
0.08 ------
2.90 BSC
2.80 BSC
1.60 BSC
0.95 BSC
1.90 BSC
0.30 0.45
0.60 REF
0.25 BSC
0.10 ------
0.10 ------
0° 4°
5° 10°
MAX.
1.45
0.15
1.30
0.50
0.22
0.60
------
0.25
8°
15°
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet EUP7987.PDF ] | |
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