ACE ACE111715XM+H 1a positive voltage regulator Datasheet

ACE1117
1A Positive Voltage Regulators
Description
ACE1117 series of high performance low dropout voltage regulators are designed for applications that
require efficient conversion and fast transient response.
In addition, ACE1117 is designed to be stable under conditions where Cin and Cout are not present.
However, it is recommended to include Cin and Cout in the system design as this will speed up the
transient response and increase the PSRR rating.
Features
● Low Dropout Performance.
● Low Quiescent Current: 3mA (Typ.)
● Guaranteed 1A Output Current.
● Wide input Supply Voltage Range.
● Stable operation without Cin and Cout.
● Over-temperature and Over-current Protection
● Fixed or Adjustable Output Voltage.
● Rugged 2KV ESD withstand capability.
Application
● Active SCSI Terminators
● High Efficiency Linear Regulators
● 5V to 3.3V Linear Regulators
● Motherboard Clock Supplies
Absolute Maximum Ratings
Parameter
Symbol
Max
Input voltage
VIN
9
Junction temperature
TJ
Thermal Resistance Junction to Ambient
θJA
60
Storage temperature
TS
- 40 to 150
Unit
V
O
-40 to 130
O
C
C/W
O
C
Packaging Type
SOT-223
1
2
3
TO-252
1
2
SOT-223 / TO-252
Description
1
ADJ/GND
2
Vout
3
Vin
3
VER 1.4
1
ACE1117
1A Positive Voltage Regulators
Ordering information
ACE1117 XX XX +
H
Halogen - free
Pb - free
XM : SOT-223
YM : TO-252
Output Voltage :
1.5 / 1.8V / 2.5V / 3.3V….. 5.0V / Default: Adjustable Version
Electrical Characteristics
VIN.MAX≦8V, VIN.MAX-VOUT=1.5V, IOUT=10mA, CIN=10uF, COUT=22uF, TA=25℃, unless otherwise specified.
Parameter
Symbol
Output Voltage (1)
VO
Reference
Voltage (1)
(ADJ. Voltage
Version)
Line Regulation
(1)
Load Regulation
(1)
Quiescent
Current (2)
Adjust Pin
Current
Adjust Pin
Current Change
Dropout Voltage
(3)
Minimum Load
Current
Current Limit
Temperature
Coefficient
Test Conditions
ACE1117-15
ACE1117-18
ACE1117-25
ACE1117-33
ACE1117-50
Min
1.470
1.764
2.450
3.234
4.900
Typ
1.5
1.8
2.5
3.3
5.0
Mum
1.530
1.836
2.550
3.366
5.100
Unit
V
VREF
(VIN-VOUT)=1.5V IOUT=10mA
(-2%) 1.250 (+2%)
V
VSR
VOUT+1.5V<VIN<8V IOUT=10mA
0.3
%
VLR
(VIN-VOUT)=1.5V 10mA≦IOUT≦1A
0.5
%
IQ
Fixed Output Version
3
mA
65
uA
IADJ
△IADJ
VOUT+1.5V<VIN<8V
10mA≦IOUT≦1A
14
uA
VD
IOUT=1A
1.3
V
IO
0.4
mA
ICL
1.8
A
TC
0.07
%/℃
VER 1.4
2
ACE1117
1A Positive Voltage Regulators
Thermal
Protection
RMS Output
Noise
Ripple Rejection
Ratio
OTP
175
℃
VN
TA=25℃, 10Hz≦f≦100kHz
0.003
%VO
RA
f=120Hz, COUT=22uF (Tantalum),
(VIN-VOUT)=3V, IOUT=10mA
55
dB
Note1: Low duty cycle pulse testing with which TJ remains unchanged.
2: The IQ of ACE1117-1.5 is 1.2mA (Typ.)
3: The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input
Typical Application
Adjustable Voltage Regulator
Vin>=3.0V
ACE1117
Vin
Vout=1.5V
Vout
ADJ
Cin
10uF
R1
124ohm
Cout
22uF
R2
24.9ohm
VOUT=VREF * (1+R2/R1)+IADJ * R2
ACE1117-3.3
Fixed Voltage Regulator
Application Hints
The typical Linear regulator would require external capacitors to ensure stability. However, ACE1117 is
designed in such a way that these external capacitor can be omitted if the PCB layout is tight and system
noise is not very high. For better transient and PSRR performance, the Input and Output capacitors are still
recommended.
VER 1.4
3
ACE1117
1A Positive Voltage Regulators
Input Capacitor
An input capacitor of 10μF is recommended. Ceramic or Tantalum can be used. The value can be
increased without upper limit.
Output Capacitor
An output capacitor of 22uF is recommended for better transient and PSRR performance. It should be
placed no more than 1 cm away from the VOUT pin, and connected directly between VOUT and GND pins.
The value may be increased without upper limit.
Thermal Considerations
It is important that the thermal limit of the package is not exceeded. The ACE1117 has built-in thermal
protection. When the thermal limit is exceeded, the IC will enter protection, and VOUT will be pulled to
ground. The power dissipation for a given application can be calculated as following:
The power dissipation (PD) is PD = IOUT * [VIN – VOUT]
The thermal limit of the package is then limited to PD(MAX) = [TJ – TA]/ΘJA where TJ is the junction
temperature, TA is the ambient temperature, and ΘJA is around 180°C/W for ACE1117. ACE1117 is
designed to enter thermal protection at 175°C. For example, if TA is 25°C then the maximum PD is limited
to about 0.83W. In other words, if IOUT(MAX) = 500mA, then [VIN – VOUT] can not exceed 1.66V. (Ref.
SOT-223 without heat sink.)
Typical Performance Characteristic
Reference Voltage vs Junction Temperature
Junction Temperature (℃)
Output Voltage vs Junction Temperature
Junction Temperature (℃)
VER 1.4
4
ACE1117
1A Positive Voltage Regulators
Dropout Voltage vs Output Current
Output Current (mA)
Liine Transients
PSRR vs Frequency
Frequency (Hz)
Load Transients
Short Transient Response
VER 1.4
5
ACE1117
1A Positive Voltage Regulators
Packing Information
SOT-223
VER 1.4
6
ACE1117
1A Positive Voltage Regulators
Packing Information
TO-252
VER 1.4
7
ACE1117
1A Positive Voltage Regulators
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.4
8
Similar pages