1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Features
- 1.4V maximum dropout at full load current
- Fast transient response
- Output current limiting
- Built-in thermal shutdown
- Packages: SOT223, TO252, SOT89,
- Good noise rejection
- 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 1.9V,
2.5V, 3.3V, 5.0V
- RoHS Compliant
Applications
- PC peripheral
- Communication
General Description
APE1117 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 1A output
current capability. The product is specifically
designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus
termination and low current 3.3V logic supply.
APE1117 is also well suited for other applications
such as VGA cards. APE1117 is guaranteed to
have lower than 1.4V dropout at full load current
making it ideal to provide well-regulated outputs of
This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is assumed as
a result of the use of this product. No rights under any patent accompany the sale of the product.
1/9
Page 2
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Connection Diagram
3 PIN SOT2233 PIN TO252
APE1117
Pb Free Plating Product
( Top View )
Tab is Vout
3 PIN SOT89
3
2
1
Tab is Vout
Block Diagram
3
2
1
Vin
Vout
Adj (GND)
Vin
Vout
Adj (GND)
( Top View )
3
2
1
Tab is Vout
Vin
Vout
Adj (GND)
Vin
Advanced Power Electronics Corp.
www.a-power.com.tw
3
Thermal
Shutdown
2Vout
+
+
-
CURRENT
LIMIT
1.25V
+
-
2/9
+
1
GND
(FIXED)
1
Adj
Page 3
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Pin Descriptions
NAME I/O PIN # FUNCTION
APE1117
Pb Free Plating Product
Adj (GND) I 1
A resistor divider from this pin to the Vout pin and ground sets the
output voltage. (Ground only for Fixed-Mode)
The output of the regulator. A minimum of 10uF capacitor (0.15Ω
Vout O 2
≤ ESR ≤ 20Ω) must be connected from this pin to ground to insure
stability.
The input pin of regulator. Typically a large storage capacitor
(0.15Ω ≤ ESR ≤ 20Ω) is connected from this pin to ground to
Vin I 3
insure that the input voltage does not sag below the minimum
dropout voltage during the load transient response. This pin must
always be 1.3V higher than Vout in order for the device to
regulate properly.
Absolute Maximum Ratings
Symbol Parameter Rating Unit
Vin DC Supply Voltage -0.3 to 12 V
Power Dissipation Internally Limited
D
P
TST Storage Temperature -65 to +150
o
C
TOP Operating Junction Temperature Range 0 to +150
Advanced Power Electronics Corp.
www.a-power.com.tw
3/9
o
C
Page 4
APE1117
θ
θ
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between
Note3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the
device is guaranteed to regulate if the output current is greater than 10mA.
Advanced Power Electronics Corp.
www.a-power.com.tw
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.
input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
SOT-223 : Control Circuitry/Power Transistor
TO-252 : Control Circuitry/Power Transistor
4/9
)=1.5V
OUT
≦12V
≦12V
≦12V
≦12V
+1.5V<VIN<12V,
OUT
≦1A,
OUT
≦1A,
OUT
OUT
o
C
=0.1%V
OUT
=1A
Pb Free Plating Product
1.225 1.250 1.275V
1.470 1.500 1.530V
1.764 1.800 1.836V
1.862 1.900 1.938V
2.450 2.500 2.550V
3.235 3.300 3.365V
4.900 5.000 5.100V
0.2 %
1 %
12 15 mV
15 18 mV
16 19 mV
20 25 mV
26 33 mV
40 50 mV
1.3 1.4 V
5 10 mA
300
117
92
100
15
10
O
C/W
O
C/W
Page 5
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator
Typical Performance Characteristics
2. 0
1. 8
1. 6
1. 4
Dropout Voltage (V)
1. 2
1. 0
0. 8
0. 6
0. 4
0. 2
0
0
Tj = 25 oC
250
Output Current (mA)
500
Tj = 125 oC
750
1000
Dropout Voltage vs Output Current
0.20
0
-0.20
-0.40
-0.80
Output Voltage Deviation (%)
- 1
-250
I load=800mA
255075100125
Temperature (oC)
Load Regulation vs Temperature
APE1117
Pb Free Plating Product
2
1.5
1
0. 5
0
-0.5
- 1
-1.5
Output Voltage Change (%)
- 2
-50-250255075100 125150
Temperature (oC)
Percent Change in Output Voltage vs Temperature
7.5
Cin=1uF
Cout=10uF Tantalum
6.5
5.5
40
20
0
-20
-40
02040 60 80100 120 140 160 180 200
Output Voltage Deviation (mV) Input Voltage (V)
TIME (us)
Line Transient Response
1
0.8
0.6
0.4
0.2
Output Voltage Deviation (%)
0
24
30
C in = 1uF
20
C out = 10 uF Tantalum
Preload = 100mA
10
0
-10
-20
Output Voltage Deviation (mV)
2
1
0
-1
Load Current (A)
010
20 304050 6070 8090 100
Load Transient Response
681012
Input Voltage (V)
Line Regulation
TIME (us)
Advanced Power Electronics Corp.
www.a-power.com.tw
5/9
Page 6
1A Low Dropout Positive Adjustable or Fixed-Mode Regulator