LR2915G-AD-SH2-R [UTC]
1.5A, LOW DROPOUT REGULATOR;
| 型号： | LR2915G-AD-SH2-R |
| 厂家： | 
Unisonic Technologies |
| 描述： | 1.5A, LOW DROPOUT REGULATOR |
| 文件： | 总4页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LR2915
Preliminary
CMOS IC
1.5A, LOW DROPOUT
REGULATOR
DESCRIPTION
SOP-8
The UTC LR2915 is CMOS-based positive voltage and a very
low dropout regulator IC that minimum input voltage is 2.5V and is
capable of delivering the continuous output load current up to 1.5A.
It has features of low dropout (maximum 300mV at 1A), a very
low quiescent current (typically 300uA at 0.1A).
The output voltage can be set from 0.5V to (VIN - VD) with an
external resistor divider and it has ±2% accuracy through all
temperature ranges include the line as well as load variations. It is
allowed to use a small 4.7μF MLCC input and output capacitor to
deliver the current with the stable operation.
HSOP-8
Built-in Soft-Start function reduces the inrush current and the
other features are include over current protection (OCP),
short-circuit protection (SCP), and thermal shut down protection
(TSD).
FEATURES
* Input Voltage Range: 2.5V~6.0V
* Supply Current : (Typ.) 300uA
* Current limit : (Min.) 1.6A
* Adjustable Output from 0.5V
* LR2915: Typ 0.4V Dropout @ IOUT=1.5A
* Compatible with MLCC Capacitors
* Built-in Soft-Start Limits Inrush Current
* Built-in Thermal Shutdown Protection
* Built-in Over Current & Short Circuit Protection
ORDERING INFORMATION
Ordering Number
Lead Free
Package
Packing
Halogen Free
LR2915L-xx-S08-R
LR2915L-xx-SH2-R
LR2915G-xx-S08-R
LR2915G-xx-SH2-R
SOP-8
Tape Reel
Tape Reel
HSOP-8
Note: xx: Output Voltage, refer to Marking Information.
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Copyright © 2017 Unisonic Technologies Co., Ltd
QW-R102-088.a
LR2915
Preliminary
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
HSOP-8
AD: ADJ
PIN CONFIGURATION
1
NC
EN
8
7
GND
FB
1
NC
EN
8
7
GND
FB
2
3
4
2
3
4
GND
6
5
VOUT
NC
VIN
NC
6
5
VOUT
NC
VIN
NC
SOP-8
HSOP-8
PIN DESCRIPTION
PIN NO.
PIN NAME
NC
DESCRIPTION
1, 4, 5
No Internal Connection
Chip Enable Pin
2
3
6
EN
VIN
Input Supply Voltage Pin.
Voltage Regulator Output Pin
VOUT
Feedback Pin. Connect to output through a voltage-divider to set the output.
Recommended that the tolerance of feedback resistors is below 1%.
Ground Pin
7
8
FB
GND
BLOCK DIAGRAM
VIN
Reference
(0.5V)
EN
Error
AMP
VOUT
FB
OCP/TSD
GND
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LR2915
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
VIN
RATINGS
-0.3 ~ 7
UNIT
V
Input Voltage
Output Voltage
VOUT
TJ
-0.3 ~ VIN+0.3
+150
V
Junction Temperature
Storage Temperature
°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.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VIN
RATINGS
2.5 ~ 6.0
-40 ~ 85
UNIT
V
Input Voltage Range
Ambient Temperature Range
TA
°C
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
90
UNIT
°C/W
Junction to Ambient
θJA
ELECTRICAL CHARACTERISTICS
All parameters are guaranteed over the operational supply voltage and temperature range. Operating conditions
unless otherwise noted are: VIN=5V, VOUT=2.5V and TA=25°C. Typical values are for information only.
PARAMETER
Supply Voltage
SYMBOL
TEST CONDITIONS
MIN
490
TYP MAX UNIT
Quiescent Current
Shutdown Current
Feedback (FB)
IQ
IOUT=100mA
300
0.2
uA
uA
ISTD
VIN=6V, VEN=GND
2
Feedback Voltage Accuracy
Input Bias Current
Output (OUT)
VF
IF
IOUT=10mA, TA =25°C
VFB=0.5V, VIN =6V
500
510
mV
uA
0.001 0.1
Output Accuracy
Load Regulation
Line Regulation
VOUT
RLO
RLN
-2
2
%
IOUT=1mA to 1.5A
0.1
2
%/A
%/V
VIN=2.2~6V, VOUT=1.225V, IOUT=1mA
IOUT=1.5A,VFB=480mV
IOUT=1A,VFB=480mV
-0.2
0.2
400
140
Dropout Voltage
VD
mV
280
200
IOUT=0.5A,VFB=480mV
Current Limit
IC
1.6
A
Load transient (Note 1)
Line Transient (Note 1)
Enable (EN)
LOT
RNT
IOUT=20mA to 1.5A,
3
3
%
%
∆VIN=0.5V
VENH
VENL
IEN
EN rising, VIN=OUT+1V~6V
EN falling, VIN=OUT+1V~6V
EN=0 or 6V
1.2
-1
6
0.4
1
V
Input Threshold
Input Bias Current
0
uA
Thermal Shutdown (TSD) (Note 1)
TSDON TSD On
165
145
TSD Threshold
TSDOFF TSD Off
Note: Guaranteed by design but not production tested.
UNISONIC TECHNOLOGIES CO., LTD
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LR2915
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
2.5V
EN
VIN
VOUT
4.7µF
5V
40kΩ
FB
4.7µF
10kΩ
GND
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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