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 Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER General Description
The AP3001 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with excellent line and load regulation. These regulators are simple to use and include internal frequency compensation and a fixed frequency oscillator, so that a system adopting AP3001 requires a minimum number of external components to work. These ICs are available in TO-220-5L, TO-220B-5L and TO-263-5L packages.
AP3001
Features
* * * * * * * 3.3V, 5V Fixed and Adjustable Output Versions Guaranteed 3A Output Load Current 150kHz Fixed Frequency Internal Oscillator Excellent Line and Load Regulation TTL Shutdown Capability Low Power Standby Mode, IQ Typically 80A Built-in Current Limit Protection and Thermal Shutdown Circuit
Applications
* * * * LCD Monitor and LCD TV On-Card DC-DC Converter DVD Recorder PDP
TO-220-5L
TO-220B-5L
TO-263-5L
Figure 1. Package Types of AP3001
Jul. 2006 Rev. 1. 3 1
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Pin Configuration
T/TB Package (TO-220-5L/TO-220B-5L) S Package (TO-263-5L)
AP3001
5 4 3 2 1
ON/OFF FEEDBACK GND OUTPUT VIN
5 4 3 2 1
ON/OFF FEEDBACK GND OUTPUT VIN
Figure 2. Pin Configuration of AP3001 (Top View)
Pin Description
Pin Number 1 2 3 4 Pin Name VIN OUTPUT GND FEEDBACK Unregulated input voltage Switch driver output Ground Feedback pin. For fixed version, connect it to system output. For adjustable version, connect it with an external resistor divider to program the system output voltage The TTL logic compatible input to control the regulator on or off Function
5
ON/OFF
Jul. 2006 Rev. 1. 3 2
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Functional Block Diagram
ON/OFF
5 1 1.235V REFERENCE 2.5V REGULATOR 220 mV START UP 200 mV
AP3001
VIN
+
Bias Current 2.5V COMP Frequency Shift 150kHz OSC
_
_
COMP
+
FEEDBACK
4 1:100 R2
_
EA
+
_
COMP LATCH
DRIVER & INV 2 THERMAL SHUTDOWN 3
+
R1 For 3.3V 5V ADJ R1=2.49k R2=4.18k R1=2.49k R2=7.57k R1=Open R2=0
OUTPUT GND
Figure 3. Functional Block Diagram of AP3001
Jul. 2006 Rev. 1. 3 3
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Ordering Information
AP3001 E1: Lead Free Blank: Tin Lead TR: Tape and Reel Blank: Tube Package T: TO-220-5L TB: TO-220B-5L S: TO-263-5L ADJ: Adjustable Output 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V
AP3001
Circuit Type
Package
Temperature Range
Part Number Tin Lead AP3001T-ADJ Lead Free AP3001T-ADJE1 AP3001T-3.3E1 AP3001T-5.0E1 AP3001TB-ADJE1 AP3001TB-3.3E1 AP3001TB-5.0E1 AP3001S-ADJE1 AP3001S-ADJTRE1 AP3001S-3.3E1 AP3001S-3.3TRE1 AP3001S-5.0E1 AP3001S-5.0TRE1 Tin Lead AP3001T-ADJ AP3001T-3.3 AP3001T-5.0
Marking ID Lead Free AP3001T-ADJE1 AP3001T-3.3E1 AP3001T-5.0E1 AP3001TB-ADJE1 AP3001TB-3.3E1 AP3001TB-5.0E1 AP3001S-ADJE1 AP3001S-ADJE1 AP3001S-3.3E1 AP3001S-3.3E1 AP3001S-5.0E1 AP3001S-5.0E1
Packing Type Tube Tube Tube Tube Tube Tube Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel
TO-220-5L
-40 to
85oC
AP3001T-3.3 AP3001T-5.0 AP3001TB-ADJ
AP3001TB-ADJ AP3001TB-3.3 AP3001TB-5.0 AP3001S-ADJ AP3001S-ADJ AP3001S-3.3 AP3001S-3.3 AP3001S-5.0 AP3001S-5.0
TO-220B-5L
-40 to 85
oC
AP3001TB-3.3 AP3001TB-5.0 AP3001S-ADJ AP3001S-ADJTR
TO-263-5L
-40 to 85oC
AP3001S-3.3 AP3001S-3.3TR AP3001S-5.0 AP3001S-5.0TR
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Jul. 2006 Rev. 1. 3 4
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Absolute Maximum Ratings (Note 1)
Parameter Maximum Supply Voltage ON/OFF Pin Input Voltage Feedback Pin Voltage Thermal Resistance (For TO-220-5L, TO-220B-5L and RJA PD TJ TLEAD TSTG Symbol Value 40 -0.3 to 25 -0.3 to 25 60
o
AP3001
Unit V V V C/W W
oC oC oC
TO-263-5L Packages)
Power Dissipation (TA=25oC, No Heat Sink) Operating Junction Temperature Lead Temperature (Soldering, 10sec) Storage Temperature Range ESD ( Machine Model) ESD ( Human Body Model) 2.08 150 260 -65 to 150 250 2500
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 Symbol AP3001-3.3V Supply Voltage (Note 2) VIN AP3001-5.0V AP3001-ADJ (VOUT=12V) Operating Junction Temperature TJ Min 4.75 7.5 16 -40 Max 10 18 28 125
oC
Unit
V
Note 2: For detailed recommended input supply voltage range, please refer to the test "conditions" for each output voltage version. For ADJ version, the recommended supply voltage dependes on the needed output voltage, the experienced formula is 1.5*VOUTVIN2.5*VOUT and 4.5VVIN36V.
Jul. 2006 Rev. 1. 3 5
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Electrical Characteristics For All Output Voltage Versions
Unless otherwise specified , VIN=12V for 3.3V, 5V and adjustable version, ILOAD=500mA. Specifications with standard type face are for TJ=25oC, and those with boldface type apply over Full Operating Temperature Range.
Parameter Feedback Bias Current Symbol IB fO VSAT DMAX DMIN ICL Conditions Adjustable Version Only, VFB=1.3V (Frequency reduces when the second current limit is activated) ILOAD=3A ( No output devices, VFB=0V) (VFB=0V) (VFB=12V) Peak Current ( No output devices, VFB=0V) Output=0V (No output devices, VFB=12V) Output=-1V (VIN=18V) Quiescent Current Standby Quiescent Current IQ ISTBY (VFB=12V) ON/OFF Pin=5V (Regulator OFF) Low (Regulator ON) High (Regulator OFF) VLOGIC=2.5V (Regulator OFF) VLOGIC=0.5V (Regulator ON) 2.0 0 3.6 3.4 5 6.9 7.5 127 110 Min Typ 40 Max 100 200 173 173 1.4 1.5 100 Unit nA
AP3001
Oscillator Frequency
150
kHz
Saturation Voltage
1.2
V
Maximum Duty Cycle (ON) Minimum Duty Cycle (OFF) Current Limit
% % A A
50
Output Leakage Current
IL
2 5 80
30 10 200 250 0.6
mA mA A
VIL ON/OFF Pin Logic Input Threshold Voltage VIH IH ON/OFF Pin Input Current IL
1.3 1.3 5 0.02
V
15 5
A A
Jul. 2006 Rev. 1. 3 6
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Electrical Characteristics (Continued) For 3.3V Output Voltage Version
Specifications with standard type face are for TJ=25oC, and those with boldface type apply over Full Operating Temperature Range.
Parameter Output Voltage Symbol VOUT Conditions 4.75VVIN10V, 0.3AILOAD3A Efficiency Min 3.168 3.135 Typ 3.3 Max 3.432 3.465 Unit V
AP3001
VIN=12V, ILOAD=3A
73
%
For 5V Output Voltage Version
Specifications with standard type face are for TJ=25oC, and those with boldface type apply over Full Operating Temperature Range.
Parameter Output Voltage Symbol VOUT Conditions 7.5VVIN18V, 0.3AILOAD3A Efficiency VIN=12V, ILOAD=3A Min 4.8 4.75 Typ 5 Max 5.2 5.25 Unit V
80
%
For ADJ Output Voltage Version
Specifications with standard type face are for TJ=25oC, and those with boldface type apply over Full Operating Temperature Range.
Parameter Feedback Voltage Symbol VFB Conditions 0.3AILOAD2.5A, VOUT programmed for 12V Efficiency VIN=24V, ILOAD=2A, VOUT=12V 16VVIN28V, Min 1.193 1.18 Typ 1.23 Max 1.267 1.28 Unit V
80
%
Jul. 2006 Rev. 1. 3 7
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Typical Performance Characteristics AP3001
1.5
1.35
1.0
VIN=12V ILOAD=3A
Saturation Voltage (V)
1.30 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 TJ=25 C
O
Output Voltage Change (%)
0.5
TJ=-40 C
O
0.0
-0.5
-1.0
0.75 0.70
TJ=125 C
0.5 1.0 1.5 2.0 2.5
O
VIN=12V
3.0
-1.5 -50
0.65
-25
0
25
50
75
O
100
125
Junction Temperature ( C)
Switch Current (A)
Figure 4. Normalized Output Voltage vs. Junction Temperature
Figure 5. Output Saturation Characteristics
100
200 4.5VOperating Quiescent Current (mA)
Switching Frequency (kHz)
50 75
O
80
180
Switch ON
60
160
40
140
20
120 0 -50 -25
Switch OFF
0 25 100 125 100 -50 -25 0 25 50 75
O
100
125
Junction Temperature ( C)
Junction Temperature(
C)
Figure 6. Operating Quiescent Current vs. Junction Temperature
Figure 7. Switching Frequency vs. Junction Temperature
Jul. 2006 Rev. 1. 3 8
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Typical Performance Characteristics (Continued) AP3001
1.5
8 7 6
1.4
OFF
Threshold Voltage (V)
1.3
5
Current (A)
4 3 2
1.2
VIN=18V -40 CO O
1.1
ON
1 1.0 0 0.9 -50 -1 -25 0 25 50
O
75
100
125
0
5
10
15
20
25
Junction Temperature ( C)
ON/OFF Pin Voltage (V)
Figure 8. ON/OFF Pin Threshold Voltage vs. Junction Temperature
Figure 9. ON/OFF Pin Current (Sinking) vs. ON/OFF Pin Voltage
60
Feedback Bias Current (nA)
55
50
45
40
ADJ Version Only
35
30 -50
-25
0
25
50
75
O
100
125
Junction Temperature ( C)
Figure 10. Feedback Bias Current vs. Junction Temperature
Jul. 2006 Rev. 1. 3 9
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Typical Application AP3001
R1 1k
R2
24V Unregulated DC Input
1 VIN
4 FEEDBACK
AP3001-ADJ
OUTPUT GND 3 ON/OFF 5
2
CC 33nF (Optional) L1 47H
12V Regulated DC Output 3A Load
CIN 680F
+
+
VOUT=1.23 *
(R2+R1) R1
D1 S36
COUT 470F
Figure 11. Typical Application of AP3001-ADJ
8V Unregulated DC Input
1 VIN
4 FEEDBACK
AP3001-3.3V
OUTPUT GND 3 ON/OFF 5
2
L1 47H
Regulated DC Output 3A Load
CIN 680F
+
D1 S36
+
COUT 470F
Figure 12. Typical Application of AP3001-3.3V
Jul. 2006 Rev. 1. 3 10
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Typical Application (Continued) AP3001
8V Unregulated DC Input
1 VIN
4 FEEDBACK
AP3001-5V
OUTPUT GND 3 ON/OFF 5
2
L1 47H
Regulated DC Output 3A Load
CIN 680F
+
D1 S36
+
COUT 330F
Figure 13. Typical Application of AP3001-5V
Jul. 2006 Rev. 1. 3 11
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Mechanical Dimensions TO-220-5L Unit: mm(inch) AP3001
11.760(0.463) 12.160(0.479)
2.590(0.102) 2.890(0.114)
9.850(0.388) 10.150(0.400) 3.790(0.149) 3.890(0.153)
4.470(0.176) 4.670(0.184) 1.170(0.046) 1.370(0.054)
0.710(0.028) 0.910(0.036)
13.500(0.531) 13.900(0.547)
2.520(0.099) 2.820(0.111)
1.700(0.067) TYP 6.700(0.264) 6.900(0.272)
8.200(0.323) 8.600(0.339)
0.310(0.012) 0.530(0.021)
Jul. 2006 Rev. 1. 3 12
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Mechanical Dimensions (Continued) TO-220B-5L Unit: mm(inch) AP3001
2.590(0.102) 2.890(0.114)
10.010(0.394) 10.310(0.406) 3.790(0.149) 3.890(0.153)
1.170(0.046) 1.370(0.054)
4.470(0.176) 4.670(0.184)
12.460(0.491) 12.860(0.506)
0.950(0.037) R 1.050(0.041)
1.170(0.046) 1.370(0.054) 8.900(0.350) 9.300(0.366)
24.300(0.957) 24.700(0.972) 25.100(0.988) 25.500(1.004)
0.710(0.028) 0.910(0.036)
3.400(0.134) 3.600(0.142)
2.520(0.099) 2.820(0.111)
5.300(0.209) 3.800(0.150) 4.000(0.157) 5.500(0.217)
4.250(0.167) 4.550(0.179)
1.700(0.067)TYP 6.700(0.264) 6.900(0.272)
3.300(0.130) 3.500(0.138)
0.310(0.012) 0.530(0.021) 8.250(0.325) 8.550(0.337)
Jul. 2006 Rev. 1. 3 13
BCD Semiconductor Manufacturing Limited
Preliminary Datasheet 150kHz 3A PWM BUCK DC-DC CONVERTER Mechanical Dimensions (Continued) TO-263-5L Unit: mm(inch) AP3001
1.560 (0.061) 1.760 (0.069)
9.880 (0.389) 10.180 (0.401)
4.470 (0.176) 4.670 (0.184) 1.170 (0.046) 1.370 (0.054) 5.600 (0.220) REF
8.200 (0.323) 8.600 (0.339)
15.140 (0.596) 15.540 (0.612)
5.080 (0.200) 5.480 (0.216) 0.710 (0.028) 0.910 (0.036)
0.000 (0.000) 0.150 (0.006)
1.700 (0.067) TYP 6.700 (0.264) 6.900 (0.272)
0.310 (0.012) 0.530 (0.021) 2.340 (0.092) 2.740 (0.108)
Jul. 2006 Rev. 1. 3 14
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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.
MAIN SITE BCD Semiconductor Manufacturing Limited
- Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008
BCD Semiconductor Manufacturing Limited
- IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
REGIONAL SALES OFFICE
Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 27B, Tower C, 2070, Middle Shen Nan Road, Shenzhen 518031, China Tel: +86-755-8368 3987, Fax: +86-755-8368 3166 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808, Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 3170 De La Cruz Blvd., Suite 105, Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386


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