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PDF L1803 Data sheet ( Hoja de datos )
| Número de pieza | L1803 | |
| Descripción | 1.5A ULTRA LOW DROPOUT LINEAR REGULATOR | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L1803 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
L1803
Preliminary
LINEAR INTEGRATED CIRCUIT
1.5A ULTRA LOW DROPOUT
LINEAR REGULATOR WITH
PROGRAMMABLE
SOFT-START
DESCRIPTION
The UTC L1803 is a typical LDO that features a
user-programmable soft-start, very low dropout voltage as low as
0.15V at output current 1.5A, an enable input and a power-good
output.
The soft-start reduces inrush current of the load capacitors and
minimizes stress on the input power source during start-up. An
enable pin to further reduce power dissipation while shutdown. And
power-good output indicates the output voltage status.
The UTC L1803 is stable with any type of output capacitor of
2.2µF or more. A precision reference and feedback control deliver
2% accuracy over load, line, and operating temperature ranges.
FEATURES
* Low VIN and wide VIN range: 1.0V~5.5V
* Bias voltage (VVCC) range: 2.7V~5.5V
* Low VOUT range: 0.8V~3.3V
* 150mV dropout @1.5A, VVCC=5V
* 2% output Voltage
* Power-Good (PG) output
* Programmable soft-start provides linear voltage startup
* Stable with any output capacitor≥2.2µF
ORDERING INFORMATION
Ordering Number
L1803G-SH2-R
L1803G-K10-3030-R
Package
HSOP-8
DFN-10(3×3)
Packing
Tape Reel
Tape Reel
L1803G-SH2-R
(1)Packing Type
(2)Package Type
(3)Green Package
(1) R: Tape Reel
(2) SH2: HSOP-8, K10-3030: DFN-10(3×3)
(3) G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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L1803
Preliminary
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL TEST CONDITIONS
MIN TYP
Power-Supply Rejection (VIN~VOUT)
PSRR
1KHz, IOUT=1A, VIN=1.8V,
VOUT=1.5V
300KHz, IOUT=1A, VIN=1.8V,
VOUT=1.5V
60
30
Power-Supply Rejection
(VVCC~VOUT)
1KHz, IOUT=1A, VIN=1.8V,
VOUT=1.5V
300KHz, IOUT=1A, VIN=1.8V,
VOUT=1.5V
50
30
Startup Time
Soft-Start Charging Current
TST
RLOAD for IOUT=1.0A,
CSS =OPEN
ISS VSS=0.4V
100
440
Enable Input High Level
Enable Input Low Level
VEN, HI
VEN, LO
1.1
0
Enable Pin Hysteresis
Enable Pin Current
VEN, HYS
IEN
VEN=5V
50
0.1
PG Trip Threshold
PG Trip Hysteresis
VPG, TH
VPG, HYS
VOUT Decreasing
85 90
7
PG Output Low Voltage
PG Leakage Current
VPG, LO
IPG, LKG
IPG=1mA (Sinking), VOUT<VPG,
TH
VPG=5.25V, VOUT>VPG, TH
0.1
Thermal Shutdown Temperature
Shutdown, Temperature
TSD Increasing
Reset, Temperature Decreasing
+150
+130
Notes: 1. VVCC should be higher or equal to VIN in this chip.
2. Tested at 0.8V; resistor tolerance is not taken into account.
3. Dropout is defined as the voltage from VIN to VOUT when VOUT is 3% below nominal.
MAX UNIT
dB
dB
dB
dB
µS
nA
5.5 V
0.4 V
mV
1 µA
94 %VOUT
%VOUT
0.3 V
1 µA
°C
°C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R102-058.c
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet L1803.PDF ] | |
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