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| L1803G-SH2-R Datasheet, PDF (5/6 Pages) Unisonic Technologies – Programmable soft-start provides linear voltage startup | |||
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L1803
Preliminary
LINEAR INTEGRATED CIRCUIT
ï® 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
50
300KHz, IOUT=1A, VIN=1.8V,
VOUT=1.5V
30
Startup Time
TST
RLOAD for IOUT=1.0A,
CSS =OPEN
100
Soft-Start Charging Current
ISS
VSS=0.4V
440
Enable Input High Level
VEN, HI
1.1
Enable Input Low Level
VEN, LO
0
Enable Pin Hysteresis
VEN, HYS
50
Enable Pin Current
IEN
VEN=5V
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=1mA (Sinking), VOUT<VPG,
TH
IPG, LKG 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
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