Datasheet

UNISONIC TECHNOLOGIES CO., LTD
L1131C
Preliminary
CMOS IC
LOW NOISE 150mA LDO
REGULATOR
„
DESCRIPTION
The UTC L1131C is a typical LDO (linear regulator) with the
features of High output voltage accuracy, low supply current, low
ON-resistance, and high ripple rejection.
During normal operation of UTC L1131C, the dropout voltage is
very low, and the response of line transient and load transient are
very well.
Inside each UTC L1131C, there’re many functions which can be
seen in the block figure, for example, a voltage reference unit, an
error amplifier, resistor-net for voltage setting, a current limit circuit,
and a chip enable circuit.
The UTC L1131C can be used as an ideal of power source for
hand-held communication equipment, such as cameras, VCRs,
camcorders and other battery-powered equipment.
„
FEATURES
* Ultra Supply Current: 75µA(typ.)
* Standby Mode: 0.1µA(typ.)
* Very Low Dropout Voltage: 0.28V(typ.) @IOUT=150mA, VOUT=2.5V
* Ripple Rejection: 70dB(typ.)@f=1kHz
60dB(typ.)@f=10kHz
* Temperature-Drift Coefficient
of Output Voltage: ±100ppm/°C(typ.)
* Well Line Regulation: 0.02%/V(typ.)
* Output Voltage Accuracy: ±2.0%(typ.)
* Internal Fold Back Protection Circuit
* CIN=COUT=1µF or more (Ceramic capacitors) are recommended to
be used with this IC
„
ORDERING INFORMATION
Ordering Number
Package
Lead Free
Halogen Free
L1131CL-xx-AF5-R
L1131CG-xx-AF5-R
SOT-25
Note: Pin Assignment: I:VIN O:VOUT G:GND C:CE N:NC
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
1
I
Pin Assignment
2
3
4
5
G
C
N
O
Packing
Tape Reel
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„
Preliminary
MARKING
PACKAGE
VOLTAGE CODE
MARKING
4
5
SOT-25
20:2.0V
25:2.5V
HXXCG
G: Halogen Free
L: Lead Free
Voltage Code
1
„
CMOS IC
2
3
PIN DESCRIPTION
PIN NO
1
2
3
4
5
PIN NAME
VIN
GND
CE
NC
VOUT
DESCRIPTION
Input pin
Ground pin
Input pin for chip enable, “high” means enable the chip.
No connection
Output pin
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www.unisonic.com.tw
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L1131C
„
Preliminary
CMOS IC
BLOCK DIAGRAM
VIN
VOUT
+
Reference
Voltage
Current Limit
CE
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
GND
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„
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
6.5
V
Input Voltage (CE Pin)
VCE
6.5
V
Output Voltage
VOUT
-0.3~VIN+0.3
V
Output Current
IOUT
200
mA
Power Dissipation
PD
420
mW
Junction Temperature
TJ
+125
°С
Operating Temperature
TOPR
-40 ~ +85
°С
Storage Temperature
TSTG
-55 ~ +125
°С
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.
„
ELECTRICAL CHARACTERISTICS
L1131C-2.0V
PARAMETER
Output Voltage
Input Voltage
Load Regulation
Output Current
Supply Current
Supply Current (Standby)
Short Current Limit
CE Input Voltage
High
Low
Output Noise
CE Pull-down Resistance
Ripple Rejection
Dropout Voltage
Line Regulation
SYMBOL
TEST CONDITIONS
VOUT VIN = Set VOUT+1V, 1mA ≤ IOUT ≤30mA
VIN
ΔVOUT VIN = Set VOUT+1V
ΔIOUT 1mA ≤ IOUT≤ 150mA
IOUT VIN−VOUT = 1.0V
ISS
VIN = Set VOUT+1V, IOUT = 0mA
IST-BY VIN= Set VOUT+1V VCE = GND
ILIMIT VOUT = 0V
VCEH
VCEL
eN
BW = 10Hz ~ 100kHz
RPD
f=1kHz
Ripple 0.5Vp−p
RR
VIN−VOUT = 1.0V, IOUT = 30mA f=10kHz
VD
IOUT=150mA
ΔVOUT
Set VOUT+0.5V ≤VIN≤6.0V, IOUT=30mA
ΔVIN
Output Voltage
Temperature Coefficient
On Resistance of Nch for Auto
Discharge
ΔVOUT
ΔT
RLOW
IOUT = 30mA
-40°C ≤ TOPR ≤85°C
VCE = 0V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.96
TYP
MAX
2.04
6.0
UNIT
V
V
22
40
mV
150
30
2.0
70
60
0.32
mA
μA
μA
mA
VIN
V
0.3
V
µVrms
8.0
MΩ
dB
dB
0.55
V
0.02
0.10
75
0.1
40
1.5
0.0
0.7
95
1.0
%/V
±100
ppm/°С
60
Ω
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Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
L1131C-2.5V
PARAMETER
Output Voltage
Input Voltage
SYMBOL
TEST CONDITIONS
VOUT VIN = Set VOUT+1V, 1mA ≤ IOUT ≤30mA
VIN
ΔVOUT
VIN = Set VOUT+1V, 1mA ≤ IOUT≤ 150mA
ΔIOUT
Load Regulation
Output Current
Supply Current
Supply Current (Standby)
Short Current Limit
CE Input Voltage
High
Low
Output Noise
CE Pull-down Resistance
Ripple Rejection
Dropout Voltage
Line Regulation
Output Voltage
Temperature Coefficient
On Resistance of Nch for Auto
Discharge
IOUT
ISS
IST-BY
ILIMIT
VCEH
VCEL
eN
RPD
RR
VIN−VOUT = 1.0V
VIN = Set VOUT+1V, IOUT = 0mA
VIN= Set VOUT+1V, VCE = GND
VOUT = 0V
MAX
2.55
6.0
UNIT
V
V
22
40
mV
30
2.0
70
60
0.28
mA
μA
μA
mA
VIN
V
0.3
V
µVrms
8.0
MΩ
dB
dB
0.50
V
0.02
0.10
75
0.1
40
1.5
0.0
BW = 10Hz ~ 100kHz
0.7
Ripple 0.5Vp−p
VIN−VOUT = 1.0V, IOUT = 30mA
IOUT=150mA
f=1kHz
f=10kHz
ΔVOUT
IOUT = 30mA, -40°C ≤ TOPR ≤85°C
ΔT
VCE = 0V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TYP
150
VD
ΔVOUT
Set VOUT+0.5V ≤VIN≤6.0V, IOUT = 30mA
ΔVIN
RLOW
MIN
2.45
95
1.0
%/V
±100
ppm/°С
60
Ω
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„
Preliminary
CMOS IC
TEST CIRCUIT
IN
ISS
VOUT
VIN
CE
OUT
UTC
L1131C-xx
GND
1.0µF
1.0µF
„
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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