L1152_11 Datasheet, PDF (4/5 Pages) Unisonic Technologies – 500mA, LOW DROPOUT, LOW NOISE ULTRA-FAST WITH SOFT START CMOS LDO REGULATOR

L1152
Preliminary
CMOS IC
„ ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Input Voltage
V_IN
6
V
EN Input Voltage
V_EN
6
V
Power Dissipation (T_A = 25°C)
P_D
0.4
W
Junction Temperature
T_J
150
°C
Storage Temperature
T_STG
-65~ +150
°C
Note: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
SYMBOL
θ_JA
„ OPERATING CONDITIONS (Note)
RATINGS
250
UNIT
°C/W
PARAMETER
SYMBOL
RATINGS
Supply Input Voltage
V_IN
2.2 ~ 5.5
Junction Temperature
T_J
-40 ~ +125
Ambient Temperature
T_A
-40 ~ +85
Note: The device is not guaranteed to function outside its operating conditions.
„ ELECTRICAL CHARACTERISTICS
UNIT
V
°C
°C
(V_IN = V_OUT + 0.5V, V_EN = V_IN, C_IN = C_OUT = 1μF (Ceramic), T_A= 25°C, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Input Voltage Range
Output Voltage Accuracy
Line Regulation
V_IN
ΔV_OUT
ΔVOUT
ΔVIN × VOUT
I_OUT = 10mA
V_IN = (V_OUT+0.5V) ~ 5.5V, I_OUT = 1mA
2.2
5.5 V
-2 0 +2 %
0.01 0.2 %/V
Load Regulation (Note 1)
ΔVOUT
VOUT
1mA<I_OUT<400mA, 2.2V≤V_IN<2.7V
1mA<I_OUT<500mA, 2.7 V≤V_IN≤5.5V
0.6 %
1%
Quiescent Current (Note 2)
I_Q
V_EN = 5V, I_OUT = 0mA
25 50 μA
Standby Current
Current Limit
Dropout Voltage (Note 3)
I_STN-BY
I_LIMIT
V_D
V_EN = 0V
R_LOAD = 0Ω, 2.2 V≤V_IN<2.6V
R_LOAD = 0Ω, 2.7 V≤V_IN≤5.5V
I_OUT = 400mA, 2.2V≤V_IN<2.7V
I_OUT = 500mA, 2.7V≤V_IN ≤5.5V
0.7 1.5 μA
0.4 0.7 1.05 A
0.5 0.8 1.05 A
160 320 mV
250 400 mV
Soft Start Time
V_OUT = 2.5V, C_SS = 1nF, C_OUT = 1μF
0.7 1 ms
EN Threshold
Logic-Low
V_IL
Logic-High
V_IH
0
0.6 V
1.6
5.5 V
Enable Pin Current
I_EN
0.1 1 5 μA
Over Temperature Shutdown
OTS
170
°C
Over Temperature Hysteresis
OTH
30
°C
Power Supply Rejection Rate
PSRR I_OUT = 10mA, f = 10kHz
-55
dB
Output Noise Voltage
eN
V_OUT = 1.5V, C_OUT = 1μF,
I_OUT = 0mA, C_SS = 1nF
40
μVrms
Notes: 1. Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested
for load regulation in the load range from 10mA to 500mA.
2. Quiescent, or ground current, is the difference between input and output currents. It is defined by I_Q = I_IN -
I_OUT under no load condition (I_OUT = 0mA). The total current drawn from the supply is the sum of the load
current plus the ground pin current.
3. The dropout voltage is defined as V_IN -V_OUT, which is measured when V_OUT is V_OUT(NORMAL) - 100mV.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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