Page No. : 1/13
RS1117A
1.0A Low Dropout Positive Voltage Regulator
General Description
The RS1117A is a 1A low‐dropout positive voltage regulator. It is available in fixed and adjustable output voltage versions.
Over current and thermal protection are integrated onto the chip. Output current will limit as while it reaches the pre‐set
current or temperature limit. The dropout voltage is specified at 1.40V Maximum at full rated output current. The RS1117A
series provides excellent regulation over line, load and temperature variations.
Features
●
Low Dropout Voltage 1.40V (Max.) at 1.0A
●
Adjustable or Fixed Voltage (1.2V, 1.8V, 2.5V, 3.3V and
5.0V)
●
Over Current Protection
●
Thermal Overload Protection
●
Maximum Line Regulation 0.2%
●
Maximum Load Regulation 1.0%
●
Adjust Pin Current Less Than 120uA
Applications
SCSI‐2 Active Termination
High Efficiency Linear Regulators
5V to 3.3V Voltage Converter
Battery Charger
Battery Management Circuits For Notebook And
Palmtop PCs
●
Core Voltage Supply: FPGA, PLD, DSP, CPU
●
●
●
●
●
Application Circuits
This integrated circuit can be damaged by ESD. Orister Corporation recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DS‐RS1117A‐16
September, 2009
www.Orister.com
Page No. : 2/13
Pin Assignments
SOT‐89
SOT‐223
TO‐252
TO‐220‐3
PACKAGE
SOT‐89
PIN
1
2
3
PIN
1
2, 4
3
PIN
1
2, 4
3
PIN
1
2, 4
3
SYMBOL
ADJ/GND
VOUT
VIN
SYMBOL
ADJ/GND
VOUT
VIN
SYMBOL
ADJ/GND
VOUT
VIN
SYMBOL
ADJ/GND
VOUT
VIN
DESCRIPTION
Ground Pin or ADJ Terminal Pin for Adjustable.
Regulator Output Pin
Regulator Input Pin
DESCRIPTION
Ground Pin or ADJ Terminal Pin for Adjustable.
Regulator Output Pin
Regulator Input Pin
DESCRIPTION
Ground Pin or ADJ Terminal Pin for Adjustable.
Regulator Output Pin
Regulator Input Pin
DESCRIPTION
Ground Pin or ADJ Terminal Pin for Adjustable.
Regulator Output Pin
Regulator Input Pin
PACKAGE
SOT‐223
PACKAGE
TO‐252
PACKAGE
TO‐220‐3
Ordering Information
DEVICE
DEVICE CODE
XX is nominal output voltage designator :
AD: ADJ
12: 1.2V
18: 1.8V
25: 2.5V
33: 3.3V
50: 5.0V
YY is package designator :
M: SOT‐89
SJ: SOT‐223
J: TO‐252
E: TO‐220‐3
Z is Lead Free designator :
P: Commercial Standard, Lead (Pb) Free and Phosphorous (P) Free Package
G: Green (Halogen Free with Commercial Standard)
RS1117A‐XX YY Z
DS‐RS1117A‐16
September, 2009
www.Orister.com
Page No. : 3/13
Absolute Maximum Ratings
Parameter
Input Voltage
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 5 Sec
HBM (Human Body Mode)
Symbol
V
IN
P
D
T
OPR
T
STG
T
LEAD
Maximum
20
Internally Limited *
0 To +125
‐65 To +150
260
2
Units
V
W
°C
°C
°C
KV/Min
*: SOT‐223: 0.9W(Max.), SOT‐89: 0.6W(Max.), TO‐252: 0.9W(Max.), TO‐220: 2.1W(Max.)
Electrical Characteristics
(V
IN
=V
LX
=3.6V, T
A
=25°C, unless otherwise specified)
RS1117A‐12 (1.2V)
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Quiescent Current
Temp. Coefficient
Temp. Stability
RMS Output Noise
Ripple Rejection Ratio
Symbol
V
OUT
REG
LINE
REG
LOAD
V
DROPOUT
I
S
I
Q
T
C
T
S
V
N
R
A
Test Conditions
V
IN
=5V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=4.75V to 6V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=5V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
T
J
=0
o
C to 125
o
C
ΔV
O
=±1%, I
O
=0A to 1A
V
IN
=4.75V to 6V
T
J
=0
o
C to 125
o
C
V
IN
=5V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
V
IN
=4.75V to 6V, I
O
=0A to 1A
V
IN
=5V, I
O
=100mA
T
J
=0
o
C to 125
o
C
10Hz ≤ f ≤ 10KHz
T
J
=25
o
C
V
IN
=5V, I
O
=1A
T
J
=0
o
C to 125
o
C
Min.
1.176
‐
‐
‐
1.0
‐
‐
‐
‐
60
Typ.
1.200
‐
0.1
1.2
1.5
6.0
0.005
0.5
0.003
72
Max.
1.224
0.2
1.0
1.4
‐
13
‐
‐
‐
‐
Units
V
%
V
A
mA
%/
o
C
%
%ΔV
O
dB
RS1117A‐18 (1.8V)
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Quiescent Current
Temp. Coefficient
Temp. Stability
RMS Output Noise
Ripple Rejection Ratio
Symbol
V
OUT
REG
LINE
REG
LOAD
V
DROPOUT
I
S
I
Q
T
C
T
S
V
N
R
A
Test Conditions
V
IN
=5V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=4.75V to 7V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=5V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
T
J
=0
o
C to 125
o
C
ΔV
O
=±1%, I
O
=0A to 1A
V
IN
=4.75V to 7V
T
J
=0
o
C to 125
o
C
V
IN
=5V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
V
IN
=4.75V to 7V, I
O
=0A to 1A
V
IN
=5V, I
O
=100mA
T
J
=0
o
C to 125
o
C
10Hz ≤ f ≤ 10KHz
T
J
=25
o
C
V
IN
=5V, I
O
=1A
T
J
=0
o
C to 125
o
C
Min.
1.764
‐
‐
‐
1.0
‐
‐
‐
‐
60
Typ.
1.800
‐
0.1
1.2
1.5
6.0
0.005
0.5
0.003
72
Max.
1.836
0.2
1.0
1.4
‐
13
‐
‐
‐
‐
Units
V
%
V
A
mA
%/
o
C
%
%ΔV
O
dB
RS1117A‐50 (5.0V)
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Quiescent Current
Temp. Coefficient
Temp. Stability
RMS Output Noise
Ripple Rejection Ratio
Symbol
V
OUT
REG
LINE
REG
LOAD
V
DROPOUT
I
S
I
Q
T
C
T
S
V
N
R
A
Test Conditions
V
IN
=7V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=7V to 9V, I
O
=0A
T
J
=0
o
C to 125
o
C
V
IN
=7V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
T
J
=0
o
C to 125
o
C
ΔV
O
=±1%, I
O
=0A to 1A
V
IN
=7V to 10V
T
J
=0
o
C to 125
o
C
V
IN
=7V, I
O
=0A to 1A
T
J
=0
o
C to 125
o
C
V
IN
=7V to 10V, I
O
=0A to 1A
V
IN
=5V, I
O
=100mA
T
J
=0
o
C to 125
o
C
10Hz ≤ f ≤ 10KHz
T
J
=25
o
C
V
IN
=5V, I
O
=1A
T
J
=0
o
C to 125
o
C
Min.
4.900
‐
‐
‐
1.0
‐
‐
‐
‐
60
Typ.
5.000
‐
0.1
1.2
1.5
6.0
0.005
0.5
0.003
72
Max.
5.100
0.2
1.0
1.4
‐
13
‐
‐
‐
‐
Units
V
%
V
A
mA
%/
o
C
%
%ΔV
O
dB
DS‐RS1117A‐16
September, 2009
www.Orister.com
Wireless Connectivity
京公网安备 11010802033920号
EEWORLD
