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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR General Description
The AP2218 is a low dropout linear regulator with a typical dropout of 300mV at 1A output current. The AP2218 provides current limit and thermal shutdown. On-chip thermal shutdown provides protection against any combination of high current and ambient temperature that would create excessive junction temperatures. The AP2218 has 3.3V and 5.0V versions. The AP2218 is available in the industry standard TO220F-4 package.
AP2218
Features
* * * * * * * Minimum Guaranteed Output Current: 1A Dropout Voltage at IOUT=1A: 300mV Output Accuracy: 1% Low Ground Current Internal Current Limit and Thermal Protection Reversed-battery and Reversed-lead Insertion Protection Fast Transient Response
Applications
* * * * * Power Module Set Top Box LCD TV PDP TV Cordless Phone
TO-220F-4
Figure 1. Package Type of AP2218
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Pin Configuration AP2218
T Package (TO-220F-4)
4 3 2 1
EN GND VOUT VIN
Figure 2. Pin Configuration of AP2218 (Top View)
Pin Description
Pin Number 1 2 3 4
Pin Name VIN VOUT GND EN Unregulated Input. Regulated Output.
Function
Ground pin. This pin and TAB are internally connected. Logic high enable input.
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Functional Block Diagram AP2218
VIN
1
2
VOUT
EN
4
1.24V Reference
16V + -
Thermal Shutdown
3
GND
Figure 3. Functional Block Diagram of AP2218
Ordering Information
AP2218 Circuit Type
E1: Lead Free Blank: Tin Lead 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V
Package T: TO-220F-4
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Ordering Information (Continued)
Package Temperature Range Part Number Tin Lead AP2218T-3.3 TO-220F-4 -40 to 125oC AP2218T-5.0 Lead Free AP2218T-3.3E1 AP2218T-5.0E1 Marking ID Tin Lead AP2218T-3.3 AP2218T-5.0 Lead Free AP2218T-3.3E1 AP2218T-5.0E1 Package Type Tube Tube
AP2218
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Absolute Maximum Ratings (Note 1)
Parameter Supply Voltage Maximum Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) ESD (Machine Model) ESD (Human Body Model) Symbol VIN TJ TSTG TLEAD Value 15 150 -65 to 150 300 350 2000 Unit V
o
C
oC o
C
V V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Supply Voltage Operating Junction Temperature Symbol VIN TJ -40 Min Max 8 125 Unit V
oC
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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1A LOW DROPOUT LINEAR REGULATOR 1A LOW DROPOUT LINEAR REGULATOR Electrical Characteristics AP2218-3.3V Electrical Characteristics
Preliminary Datasheet AP2218 AP2218
Operating Conditions: VIN=4.3V, CIN=10F, COUT=10F, TJ=25oC, unless otherwise specified. The Boldface applies over -40oCTJ125oC. (Pmaximum power dissipation.)
Parameter Output Voltage Symbol VOUT Condition IOUT=10mA 10mAIOUT1A, 4.3VVIN6.3V Min 3.27 3.23 Typ 3.3 Max 3.33 3.37 Unit V V
(Note 2)
Line Regulation Load Regulation Output Voltage Temperature Coefficient Dropout Voltage (Note 3) VRLINE VRLOAD VOUT/T VDROP IOUT=10mA, 4.3VVIN8V VIN=4.3V, 10mAIOUT1A IOUT=10mA VOUT=1% IOUT=100mA IOUT=1A Ground Current IGND VIN=4.3V IOUT=750mA IOUT=1A Current Limit Minimum Load Current Output Noise Voltage (rms) ILIMIT ILOAD(MIN) 10Hz to 100KHz, IOUT=100mA, COUT=10F VOUT=0V (Note 4) 1.5 3.3 6.6 66 70 300 6 10 2.2 1 400 5 33 50 330 200 550 15 mV mV V/oC mV mV mA mA A mA V
Enable Input Enable Input Voltage VEN Logic low (off) Logic high (on) Enable Input Current IIN VEN=2.25V VEN=0.8V Shutdown Output Current IOUT(SHDN) (Note 5) 10 2.25 1 15 30 75 2 4 20 0.8 V V A A A
Note 2: For the details of VIN range, please refer to (VIN-VOUT)*ILOADmaximum power dissipation (Figure 4). Note 3: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V applied to VIN. Note 4: VIN=VOUT(NOMINAL)+1V. Note 5: VEN 0.8V, VIN8V, VOUT=0V.
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Electrical Characteristics (Continued) AP2218-5.0V Electrical Characteristics
Operating Conditions: VIN=6V, CIN=10F, COUT=10F, TJ=25oC, unless otherwise specified. The Boldface applies over -40oCTJ125oC. (Pmaximum power dissipation.)
Parameter Output Voltage Symbol VOUT Condition IOUT=10mA 10mAIOUT1A, 6VVIN8V Min 4.95 4.90 Typ 5.0 Max 5.05 5.10 Unit V V
AP2218
(Note 2)
Line Regulation Load Regulation Output Voltage Temperature Coefficient Dropout Voltage (Note 3) VRLINE VRLOAD VOUT/T VDROP IOUT=10mA, 6VVIN8V VIN=6V, 10mAIOUT1A IOUT=10mA VOUT=1% IOUT=100mA IOUT=1A Ground Current IGND VIN=6V IOUT=750mA IOUT=1A Current Limit Minimum Load Current Output Noise Voltage (rms) ILIMIT ILOAD(MIN) 10Hz to 100KHz, IOUT=100mA, COUT=10F VOUT=0V (Note 4) 1.5 5 10 100 70 300 6 10 2.2 1 400 5 50 75 500 200 550 15 mV mV V/oC mV mV mA mA A mA V
Enable Input Enable Input Voltage VEN Logic low (off) Logic high (on) Enable Input Current IIN VEN=2.25V VEN=0.8V Shutdown Output Current IOUT(SHDN) (Note 5) 10 2.25 1 15 30 75 2 4 20 0.8 V V A A A
Note 2: For the details of VIN range, please refer to (VIN-VOUT)*ILOADmaximum power dissipation (Figure 4). Note 3: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V applied to VIN. Note 4: VIN=VOUT(NOMINAL)+1V. Note 5: VEN 0.8V, VIN8V, VOUT=0V.
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics AP2218
3.5
2
3.5
3.0
Heatsink size: 45*43 mm
3.0
TCASE=25 C
O
Peak Output Current (A)
Power Dissipation (W)
2.5
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0.0 -40
0.0
-20
0
20
40
60
o
80
100
120
1
2
3
4
5
6
7
8
9
10
11
Ambient Temperature ( C)
VIN-VOUT Differential Voltage (V)
Figure 4. Power Dissipation vs. Ambient Temperature
Figure 5. Peak Output Current vs. VIN-VOUT Differential Voltage
20 18 16
16
AP2218-3.3V IOUT=100mA IOUT=750mA IOUT=1A
14 12
IOUT=100mA IOUT=750mA IOUT=1A
Ground Current (mA)
Ground Current (mA)
14 12 10 8 6 4 2 0 0 2 4 6 8 10
10 8 6 4 2 0
12
14
-25
0
25
50
75
o
100
125
Supply Voltage (V)
Ambient Temperature( C)
Figure 6. Ground Current vs. Supply Voltage
Figure 7. Ground Current vs. Ambient Temperature
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AP2218
18 16 14
450
VIN=VOUT+1V Dropout Voltage (mV)
400 350 300 250 200 150 100 50 0 -40
IOUT=250mA IOUT=500mA IOUT=1A
Ground Current (mA)
12 10 8 6 4 2 0 0 250 500 750 1000 1250
-20
0
20
40
60
o
80
100
120
Output Current (mA)
Ambient Temperature ( C)
Figure 8. Ground Current vs. Output Current
Figure 9. Dropout Voltage vs. Ambient Temperature
450 400 350
5.010 5.008 5.006 5.004
AP2218-5.0V
Dropout Voltage (mV)
Output Voltage (V)
300 250 200 150 100 50 0 0 200 400 600 800 1000 1200 1400
5.002 5.000 4.998 4.996 4.994 4.992 4.990 4.988 4.986 -40 -20 0 20 40 60
o
VIN=6V IOUT=10mA
80
100
120
Output Current (mA)
Ambient Temperature ( C)
Figure 10. Dropout Voltage vs. Output Current
Figure 11. Output Voltage vs. Ambient Temperature
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AP2218
6.0 5.5 5.0
5.5 5.0 4.5
AP2218-5.0V
Output Voltage (V)
4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 1 2 3 4 5
AP2218-5.0V
Output Voltage (V)
13
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5
IOUT=10mA IOUT=1A
6
7
8
9
10
11
12
0.0 0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Input Voltage (V)
Enable Voltage (V)
Figure 12. Dropout Characteristics
Figure 13. Output Voltage vs. Enable Voltage
70
VIN=VOUT+1V Output Voltage
VIN=6V IOUT=10mA CIN=10F COUT=10F
60
CIN=10F, COUT=10F
50
PSRR (dB)
40
30
20
10
0 10
100
1k
10k
100k
1M
Frequence (Hz)
Figure 14. Power Supply Rejection Ratio
Output Current
Figure 15. Load Transient
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AP2218
Output Voltage
Input Voltage
IOUT=10mA CIN=10F, COUT=10F
Figure 16. Line Transient
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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1A LOW DROPOUT LINEAR REGULATOR 1A LOW DROPOUT LINEAR REGULATOR Typical Application
Preliminary Datasheet AP2218 AP2218
VIN=6V
1
VIN
VOUT EN
2 4
Enable Shutdown
VOUT=5V
AP2218-5.0
CIN 10F GND 3
COUT 10F
Figure 17. Typical Application of AP2218
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet 1A LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions TO-220F-4 Unit: mm(inch) AP2218
3.000(0.118) 3.400(0.134) 3.300(0.130) 3.500(0.138)
6.300(0.248) 6.700(0.264)
3.300(0.130) 1.500(0.059)
15.500(0.610) 15.900(0.626)
5
10.400(0.409)
15.400(0.606) 15.800(0.622)
1.000(0.039)
5
3-R0.250(0.010)
5
10.000(0.394) 10.600(0.417)
0.500(0.020) 0.700(0.028) 3-1.050(0.041)MIN 3-1.300(0.051)MAX
2.540(0.100)TYP 1.500(0.059)MAX 1.190(0.047)REF 4-R0.250(0.010) REF 7.620(0.300) REF
5
13.600(0.535) REF
1.250(0.049) MIN 1.190(0.047)REF 0.450(0.018) 0.600(0.024)
1.300(0.051) 1.700(0.067)
5
Aug. 2005 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
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10.050(0.396) REF
5
1.900(0.075)
3.500(0.138)REF
9.800(0.386) 10.200(0.402) 5.000(0.197)REF
5
3.500(0.138)REF 1.500(0.059) Dp0.100(0.004) 3.500(0.138)REF 4.300(0.169) 2.600(0.102) 4.700(0.185) 3.000(0.118) 3.500(0.138)REF 1.000(0.039) 3-
3-
1.500(0.059) Dp0.100(0.004)
45
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IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.

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