UTC L1183A 300ma cmos ldo Datasheet

UNISONIC TECHNOLOGIES CO., LTD
L1183A
Preliminary
CMOS IC
300mA CMOS LDO
„
DESCRIPTION
The UTC L1183A is a COMS positive linear regulator. One of
it’s feature is the very low quiescent current typical as low as 30μA
and its dropout voltage is extremely low with 300mA output current.
The internal circuit includes thermal shutdown and current
fold-back to prevent device failure when the circuit is operated in the
bad conditions.
In application, the UTC L1183A needs a low noise, regulated
supply. For stable operation, the output capacitance value should be
2.2μF or more.
The UTC L1183A is an ideal for battery applications, such as
instrumentations, portable electronics, wireless devices, cordless
phones, PC peripherals, and battery powered widgets.
„
4
5
1
2
3
SOT-25
FEATURES
* Accurate to within 1.5%
* Quiescent current: 30μA
* Internal over-temperature shutdown
* With current limiting
* Internal short circuit current fold-back
* Has power-saving shutdown mode
* Very low temperature coefficient
* Halogen Free
„
ORDERING INFORMATION
Ordering Number
Package
L1183AG-xx-AF5-R
SOT-25
Note: xx: Output Voltage, refer to Marking Information.
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Copyright © 2009 Unisonic Technologies Co., Ltd
Packing
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L1183A
„
Preliminary
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
12 :1.2V
15 :1.5V
SOT-25
28 :2.8V
31 :3.1V
33 :3.3V
„
PIN CONFIGURATION
„
PIN DESCRIPTION
PIN NO.
1
2
PIN NAME
VIN
GND
3
EN
4
NC
5
VOUT
DESCRIPTION
Input for voltage input. A 1µF or greater capacitor should be placed in this pin.
Ground.
Enable pin. Pulling his pin low, can shut down the PMOS pass transistor, and the
current consuming can be set less than 1µA.
Output voltage pin. The capacitor which connected between this pin and GND
should be decoupled with a 1µF or a greater value low ESR ceramic capacitor.
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L1183A
„
Preliminary
CMOS IC
BLOCK DIAGRAM
VIN
Overcurrent Shutdown
EN
Thermal Shutdown
-
NC
AMP
+
VOUT
R1
VREF=1.215V
R2
GND
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L1183A
„
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
-0.3~ +8
V
Input Voltage (EN,BYP)
-0.3~ +8
V
Output Voltage
VOUT
-0.3~ VIN+0.3
V
Output Voltage
IOUT
PD / (VIN - VOUT)
mA
Power Dissipation
PD
400
mW
Junction Temperature
TJ
150
°C
Storage Temperature
TSTG
-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.
„
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Ambient Temperature
Junction Temperature
Storage Temperature
„
THERMAL DATA
SYMBOL
Ta
TJ
TSTG
RATINGS
- 40~ +85
- 40~ +125
-65~ +125
UNIT
°C
°C
°C
PARAMETER
SYMBOL
θJA
θJC
RATINGS
280
140
UNIT
°C/W
°C/W
Junction to Ambient
Junction to Case (Note)
Note: θJC on center of molding compound if IC has on tab
„
ELECTRICAL CHARACTERISTICS (Ta = 25°C, Unless otherwise specified)
PARAMETER
Input Voltage
SYMBOL
VIN
TEST CONDITIONS
MIN TYP
Note1
-0.2
-0.15
-0.1 0.02
Line Regulation
ΔVOUT
VOUT
1.2V≤VOUT≤1.4V
VIN=VOUT+1~VOUT+2
1.4V<VOUT≤2.0V
IOUT=1mA
2.0V<VOUT<4.0V
Load Regulation
ΔVOUT
VOUT
IOUT=1mA~300mA
-1
-1.5
-2.5
Quiescent Current
IQ
Dropout Voltage
VD
IOUT=1mA
IOUT=300mA
IOUT=0mA
IOUT=300mA
VOUT=VO(NOM)-2.0%
Output Voltage Accuracy
Power Supply Ripple
Rejection
Output Voltage Noise
Output Current
Current Limit
Short Circuit Current (Note2)
Ground Pin Current
Over Temperature Shutdown
Over Temperature Hysteresis
Temperature Coefficient of
Output Voltage
EN Input Threshold
EN Input Bias Current
PSRR
eN
IOUT
ILIMIT
ISC
IGND
OTS
OTH
1.2V≤VO(NOM)≤2.0V
2.4V<VO(NOM)≤2.8V
f=100Hz
IOUT=100mA
f=1kHz
COUT=2.2µF
f=10kHz
IOUT=10mA,COUT=2.2µF,f=10Hz~100kHz,
VOUT>1.2V
VOUT>1.2V
VOUT<0.8V
IOUT=1mA ~300mA
UNIT
V
%
%
%
0.2
1
%
30
1.5
2.5
50
1300
400
%
%
µA
mV
mV
dB
dB
dB
µVRMS
mA
mA
mA
µA
°C
°C
60
50
20
30
300
300
TCVO
VEH
VEL
IEH
IEL
ISD
VSD
MAX
6.5
0.2
0.15
0.1
450
150
35
150
30
300
30
VIN=2.7V~6.5V
VIN=2.7V~6.5V
VEN=VIN, VIN=2.7V~6.5V
VEN=0V, VIN=2.7V~6.5V
VIN=5V, VO=0V, VEN<VEL
IO=0.4mA, VEN<VEL
2.0
0
ppm/°C
VIN
0.4
0.1
0.5
1
0.4
V
V
µA
µA
µA
V
Shutdown Supply Current
0.5
Shutdown Output Voltage
0
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.
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www.unisonic.com.tw
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L1183A
„
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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