L1188
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Input, Output Voltage
GND - 0.3 ~ VIN + 0.3
V
Input Voltage
VIN
8
V
Output Current
IOUT
1
A
Power Dissipation
PD
800
mW
Junction Temperature
TJ
125
°C
Ambient Operating Temperature
TOPR
- 40 ~ +85
°C
Storage Temperature
TSTG
- 65 ~ +150
°C
Notes: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case (Note)
Note: Measure θJC on backside center of tab.
SYMBOL
θJA
θJC
RATINGS
135
31
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise specified.)
UNIT
°C/W
°C/W
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Input Voltage
Output Voltage Accuracy
Line Regulation
Load Regulation
VIN
VOUT
ΔVOUT
VOUT
ΔVOUT
VOUT
IOUT = 1mA
IOUT=1mA
VIN=VOUT+1~VOUT+2
IOUT =1mA~800mA
1.8V≤VOUT≤2.0V
2.0V<VOUT<4.0V
VOUT≥4.0V
Note1
7
V
-1.5
1.5 %
-0.15
0.15 %
-0.1 0.02 0.1 %
-0.4 0.2 0.4 %
0.2 1
%
Output Current
Current Limit
Short Circuit Current
IOUT
ILIMIT
ISC
VOUT≥1.8V
VOUT≥1.8V
VOUT<0.8V
800
mA
900
mA
400 800 mA
Quiescent Current
IQ
IOUT=0mA
30 50 μA
Ground Pin Current
IGND IOUT=1mA ~ 800mA
35
μA
Dropout Voltage
VD
IOUT=800mA
VOUT=VOUT(NOM)-2.0%
1.8V≤VOUT(NOM)≤2.0V
2.0V<VOUT(NOM)≤2.8V
2.8V<VOUT(NOM)
1400 mV
1000 mV
800 mV
Over Temperature Shutdown OTS
150
°C
Over Temperature Hysteresis OTH
30
°C
Temperature Coefficient of
Output Voltage
TCVO
30
ppm/°C
Power Supply Ripple
Rejection
PSRR IOUT=100mA
CO=2.2μF
f=100Hz
f=1kHz
f=10kHz
60
dB
50
dB
20
dB
Output Voltage Noise
eN IOUT=10mA, COUT=2.2μF, f=10Hz~100kHz
30
μVRMS
Notes: 1. VIN(MIN)=VOUT+VD
2. 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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 4
QW-R502-324.d