L1127G-XX-AF5-R [UTC]
ULTRA-LOW-NOISE, HIGH-SPEED, LOW-DROPOUT, 300mA LINEAR REGULATOR; 超低噪音，高速，低压差， 300毫安线性稳压器
| 型号： | L1127G-XX-AF5-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | ULTRA-LOW-NOISE, HIGH-SPEED, LOW-DROPOUT, 300mA LINEAR REGULATOR |
| 文件： | 总5页 (文件大小：174K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
L1127
Preliminary
CMOS IC
ULTRA-LOW-NOISE,
HIGH-SPEED, LOW-DROPOUT,
300mA LINEAR REGULATOR
DESCRIPTION
As a low dropout linear regulator, the UTC L1127 only needs low input
voltage (2.5~6V), and can deliver current to 300mA for setting the output
voltage.
The UTC L1127 is ideal for being used in such battery-powered
equipments notebook, personal computer and mother board. Its typical
dropout voltage is 200mV at loading current 300mA.
L1127 has 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V, 4.2V, 4.75V, 5.2V
fixed voltage versions and 0.8V to 5.5V adjustable voltage versions.
To protect itself against current over-loads and over temperature, the
L1127 has short current limit and thermal shutdown functions.
FEATURES
* Operating Voltage: 2.5V~6V
* Low Voltage Dropout
* Output Current Guaranteed 300mA
* For Setting Output Voltage Two Modes
- Fixed mode : 1.0V,1.2V,1.5V,1.8V,2.5V,3.0V,3.3V,4.2V,4.75V,5.2V
- ADJ mode: Adjustable Output Voltage 0.8V~5.5V
* Internal Current Limit Protection
* With Soft-Start
* Internal Thermal Protection
* Work Stably with Low ESR Ceramics Capacitor
ORDERING INFORMATION
Ordering Number
Lead Free
Package
SOT-25
Packing
Tape Reel
Halogen Free
L1127G-xx-AF5-R
L1127L-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
L1127L-xx-AF5-R
(1)Packing Type
(1) R: Tape Reel
(2)Package Type
(3)Output Voltage Code
(4)Lead Free
(2) AF5: SOT-25
(3) xx: Refer to Marking Information
(4) G: Halogen Free, L: Lead Free
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Copyright © 2012 Unisonic Technologies Co., Ltd
QW-R502-742.a
L1127
Preliminary
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
SOT-25
45: 4.5V
PIN CONFIGURATION
VOUT
NC/ADJ
4
5
1
2
3
GND
VIN
SHDN
PIN DESCRIPTION
NO.
1
PIN NAME
VIN
I/O
I
DESCRIPTION
Voltage supply
Ground
2
GND
3
I
Control pin for shutdown; logic high: enable ;logic low: shutdown
SHDN
NC.
4
5
This pin is connected to an external resistor divider, turns to adjustable output
voltage mode operation.
Output pin
ADJ
VOUT
O
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L1127
Preliminary
CMOS IC
BLOCK DIAGRAM
For Fixed Output Voltage Mode:
For Adjustable Output Voltage Mode:
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L1127
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
VIN
RATINGS
+6.5
UNIT
V
VIN Supply Voltage (VIN to GND)
SHDN Input Voltage ( SHDN to GND)
VSHDN
-0.3 ~ +6.5
V
Power Dissipation
PD
TJ
400
+125
mW
°С
Junction Temperature
Storage Temperature
TSTG
-65 ~ +150
°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.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VIN
RATINGS
2.5 ~ 6
UNIT
V
VIN Supply Voltage
Output Voltage
VOUT
IOUT
0.8 ~ 5.5
0 ~ 300
V
VOUT Output Current
Operating Temperature
mA
°С
TOPR
-40 ~ +85
ELECTRICAL CHARACTERISTICS
(VIN = VOUT+0.5V (min VIN=2.5V), IOUT=0~300mA, CIN = 1μF, COUT =1μF, TA = 25°С, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
IN = VOUT+0.5V,
1mA<IOUT<300mA
MIN TYP MAX UNIT
V
98%x
VOUT
2.5
102%x
VOUT
6
Output Voltage
V
Input Voltage
VIN
V
Line Regulation
REGLINE VOUT+0.5V<VIN<6V,IOUT= 10mA
0.06
%/V
VIN = VOUT+0.5V,
REGLOAD
Load Regulation
0.6
%/A
V
1mA<IOUT<300mA
V
IN = VOUT+0.5V,
1mA<IOUT<300mA
IOUT(MAX) VIN=VOUT+0.5V, VOUT= 0.98xVOUT
Reference Voltage
VREF
0.784 0.8 0.816
Maximum Output Current
Quiescent Current
300
400
60
mA
IQ
IOUT =10mA ~300mA
OUT = 1.0V, IOUT = 300mA
90
μA
V
1400 1500
1200 1300
900 1000
VOUT = 1.2V, IOUT = 300mA
VOUT = 1.5V, IOUT = 300mA
VOUT = 1.8V, IOUT = 300mA
VOUT =2.5V,2.8V,3.3V,4.2V,
Dropout Voltage
VD
mV
600
700
300
300
170
I
OUT = 300mA
VOUT=4.75V and 5.2V, IOUT=300mA
140
45
Power Supply Ripple Rejection Ratio
Short Current Limit
PSRR f = 10kHz, IOUT = 300mA
dB
mA
V
ISHORT VOUT = 0V
50
VIH
VIL
1.5
0
6
Shutdown Threshold
0.4
V
Shutdown Supply Current
Soft Start Time
IOFF
TSS
0.1
50
1
μA
μs
SHDN = Low, VIN = VOUT+0.5V
TA=25°С, 10Hz ≤ f ≤100kHz,
RMS Output Noise
VNOISE
60
μVRMS
VOUT = 0.8V
VOUT Discharge MOSFET RDS(ON)
60
3
Ω
SHDN = low
MΩ
SHDN Pull Down Resistance
Output Voltage Temperature Coefficient
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TJ= -40°С~85°С
+100
165
30
ppm/°С
°С
TSHDN
DTSHDN
°С
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L1127
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUITS
For Fixed Output Voltage Mode:
s
For Adjustable Output Voltage Mode:
R1
R2
VOUT = 0.8×(1+
)
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.
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