LR1120G-28-AF5-R [UTC]
LOW DROPOUT, LOW NOISE ULTRA-FAST WITH REGULATOR;型号: | LR1120G-28-AF5-R |
厂家: | Unisonic Technologies |
描述: | LOW DROPOUT, LOW NOISE ULTRA-FAST WITH REGULATOR |
文件: | 总4页 (文件大小:155K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LR1120
Preliminary
CMOS IC
500mA, LOW DROPOUT, LOW
NOISE ULTRA-FAST WITH
SOFT START CMOS LDO
REGULATOR
DESCRIPTION
UTC LR1120, a 500mA LDO regulator, has very high PSRR and
super low dropout voltage especially suitable for wireless and
portable applications.
In the field of hand-held wireless devices, board space and
battery life are the main concerns of designers and end-users.
Because of the low quiescent current and low ESR ceramic
capacitors, UTC LR1120 can satisfy those concerns.
Furthermore, low current consumption in shutdown mode
(0.7μA), fast turn-on time (<70μs), high output accuracy, current
limiting protection, and high ripple rejection ratio are advantages of
UTC LR1120.
FEATURES
* Operating Voltage Ranges : 2.2V to 5.5V
* Dropout : 250mV at 500mA
* When IC Shutdown: 5mA Discharge Current of VOUT
* Extreme Low Noise for DSC Application
* Extreme Fast Response in Line/Load Transient
* Internal Current Limiting Protection
* Internal Thermal Shutdown Protection
* High PSRR
* Recommended 1μF Output Capacitor only for Stability
* With TTL Logic Controlled Shutdown Input
ORDERING INFORMATION
Ordering Number
LR1120G-xx-AF5-x-R
LR1120G-xx-AL5-x-R
Package
SOT-25
SOT-353
Packing
Tape Reel
Tape Reel
Note: xx: Output Voltage, refer to Marking Information.
www.unisonic.com.tw
1 of 4
Copyright © 2015 Unisonic Technologies Co., Ltd
QW-R502-331.l
LR1120
Preliminary
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
18 :1.8V
MARKING
25 :2.5V
28 :2.8V
30: 3.0V
31 :3.1V
SOT-25
SOT-353
33 :3.3V
40 :4.0V
PIN DESCRIPTION
PIN CODE
PIN
NAME
DESCRIPTION
A
1
2
B
1
2
C
1
2
D
2
1
VIN
Supply voltage input.
Ground.
GND
Input logic pin, active high for enabling the chip. When this pin goes to
a logic low, the chip will be shutdown.
Soft start pin.
3
3
3
-
EN
4
5
-
-
-
-
3
SS
VOUT
NC
4
5
5
4
Regulator output voltage pin.
4, 5
No Connection
BLOCK DIAGRAM
SS
Current Limit
VIN
VREF
-
POR
OTP
MOS Driver
+
VOUT
EN
R
GND
UNISONIC TECHNOLOGIES CO., LTD
2 of 4
QW-R502-331.l
www.unisonic.com.tw
LR1120
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING (TA= 25°C, unless otherwise specified.)
PARAMETER
SYMBOL
VIN
RATINGS
UNIT
V
Supply Input Voltage
EN Input Voltage
6
6
VEN
V
SOT-25
0.38
W
Power Dissipation (TA = 25°C)
PD
SOT-353
0.25
W
Junction Temperature
Storage Temperature
TJ
150
°C
°C
TSTG
-65~ +150
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
SYMBOL
RATINGS
260
UNIT
°C/W
°C/W
SOT-25
Junction to Ambient
θJA
SOT-353
400
OPERATING CONDITIONS
PARAMETER
SYMBOL
RATINGS
2.2 ~ 5.5
UNIT
V
Supply Input Voltage
Junction Temperature
Ambient Temperature
VIN
TJ
-40 ~ +125
-40 ~ +85
°C
TA
°C
Note: The device is not guaranteed to function outside its operating conditions.
ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 0.5V, VEN = VIN, CIN = COUT = 1μF (Ceramic), TA= 25°C, unless otherwise specified.)
PARAMETER
Input Voltage
SYMBOL
VIN
TEST CONDITIONS
MIN TYP MAX UNIT
2.2
-2
5.5
+2
V
Output Voltage Accuracy
∆VOUT
IOUT = 10mA
0
%
∆VOUT
∆VIN× VOUT
∆VOUT
VOUT
Line Regulation
VIN = (VOUT+0.5V) ~ 5.5V, IOUT = 1mA
0.01 0.2 %/V
1mA<IOUT<400mA, 2.2V≤VIN<2.7V
1mA<IOUT<500mA, 2.7 V≤VIN≤5.5V
VEN = 5V, IOUT = 0mA
0.6
1
%
%
μA
μA
A
Load Regulation (Note 1)
Quiescent Current (Note 2)
Standby Current
IQ
25
50
1.5
ISTN-BY
VEN = 0V
0.7
RLOAD = 0Ω, 2.2V≤VIN<2.7V
0.4
0.5
0.7 1.05
0.8 1.05
160 320
250 400
Current Limit
ILIMIT
VD
R
LOAD = 0Ω, 2.7V≤VIN≤5.5V
IOUT = 400mA
OUT = 500mA
A
Dropout Voltage (Note 3)
Soft Start Time
mV
I
VOUT = 2.5V, CSS = 1nF, COUT = 1μF
0.7
1
ms
V
Logic-Low
EN Threshold
VIL
VIH
0
0.6
5.5
5
Logic-High
1.6
0.1
V
Enable Pin Current
IEN
1
170
30
μA
°C
Over Temperature Shutdown
Over Temperature Hysteresis
Power Supply Rejection Rate
Output Noise Voltage
OTS
OTH
PSRR
eN
°C
IOUT = 10mA, f = 10kHz
55
dB
VOUT=1.5V,COUT=1μF,IOUT=0mA, CSS = 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 1mA to 500mA.
2.Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN
-
IOUT under no load condition (IOUT = 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 VIN -VOUT, which is measured when VOUT is VOUT(NORMAL)×98%.
UNISONIC TECHNOLOGIES CO., LTD
3 of 4
QW-R502-331.l
www.unisonic.com.tw
LR1120
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
4 of 4
QW-R502-331.l
www.unisonic.com.tw
相关型号:
LR1120G-31-AF5-R
Fixed Positive LDO Regulator, 3.1V, 0.4V Dropout, CMOS, PDSO5, HALOGEN FREE, SOT-25, 5 PIN
UTC
LR1120G-33-AF5-R
Fixed Positive LDO Regulator, 3.3V, 0.4V Dropout, CMOS, PDSO5, HALOGEN FREE, SOT-25, 5 PIN
UTC
©2020 ICPDF网 联系我们和版权申明