AP1512-33T5RA [DIODES]
Switching Regulator, Voltage-mode, 5.5A, 60kHz Switching Freq-Max, LEAD FREE, TO-220, 5 PIN;
| 型号： | AP1512-33T5RA |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Switching Regulator, Voltage-mode, 5.5A, 60kHz Switching Freq-Max, LEAD FREE, TO-220, 5 PIN |
| 文件： | 总12页 (文件大小：232K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Features
General Description
- Output voltage: 3.3V, 5V, 12V and adjustable
output version
The AP1512/A is a monolithic IC that design for a
step-down DC/DC converter, and own the ability of
driving a 2A (3A for AP1512A) load without
additional transistor component. Due to reducing
the number of external component, the board
space can be saved easily. The external shutdown
function can be controlled by logic level and then
- Adjustable version output voltage range, 1.23V to
37V+4%
- 50KHz +15% fixed switching frequency
- Voltage mode non-synchronous PWM control
- Thermal-shutdown and current-limit protection
- ON/OFF shutdown control input
- Operating voltage can be up to 60V
- Output load current: 2A (for AP1512)
3A (for AP1512A)
come
into
standby
mode.
The
internal
compensation makes feedback control have good
line and load regulation without external design.
Regarding protected function, thermal shutdown is
to prevent over temperature operating from damage,
and current limit is against over current operating of
the output switch. The AP1512/A operates at a
switching frequency of 50KHz thus allowing smaller
sized filter components than what would be needed
with lower frequency switching regulators. Other
features include a guaranteed +4% tolerance on
output voltage under specified input voltage and
output load conditions, and +15% on the oscillator
frequency. The output version included fixed 3.3V,
5V, 12V, and an adjustable type. The packages are
available in a standard 5-lead TO-220 package and
a 5-lead TO-263.
- Low power standby mode
- Built-in switching transistor on chip
- TO220-5L, TO220-5L(R) and TO263-5L Pb-free
packages
Applications
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
Pin Assignments
Pin Descriptions
Name
VIN
Description
Operating voltage input
Switching output
( Top View )
5 SD
4 FB
3 Gnd
Output
Gnd
FB
2 Output
Ground
1 VIN
Metal Tab GND
Output voltage feedback control
ON/OFF Shutdown
TO263-5L
SD
( Top View )
5 SD
4 FB
3 Gnd
2 Output
1 VIN
TO220-5L
This datasheet contains new product information. Anachip 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.
Rev.1.1 Oct. 14, 2005
1/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Ordering Information
AP1512 X XX X X
Package
Output Version
Packing
Part Number
Blank: 2A
Blank : Adjustable
T5: TO220-5L
Blank : Tube
T5R: TO220-5L(R)
K5: TO263-5L
A : 3A
-33 : 3.3V
A : Taping
-50 : 5.0V
-12 : 12V
Block Diagram
SD
VIN
200mV
220mV
Current
1.235V
Source
2.5V
Start
up
Regulator
Reference
bias
Com_+p
_
Comp
+
Frequecy
compen-
sation
+
_
2A
_
Amp
Switch
Comp
Pre-driver
FB
+
(3A for
AP1512A)
Output
Gnd
50KHz
OSC.
Thermal
Limit
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
2/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Absolute Maximum Ratings
Symbol
Parameter
Supply Voltage
Rating
Unit
VCC
VSD
VFB
VOUT
PD
+63
-0.3 to +40
-0.3 to +40
-1
V
V
ON/OFF Pin input voltage
Feedback Pin voltage
Output voltage to Ground
Power dissipation
V
V
Internally limited
-65 to +150
-40 to +125
+4.5 to +60
W
oC
oC
V
TST
TOP
VOP
Storage temperature
Operating temperature
Operating voltage
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, VIN=30V for all version. ILOAD = 0.5A
Symbol
Parameter
Conditions
VFB=1.3V
(Adjustable version only)
Min.
Typ.
5
Max.
Unit
8
10
IB
Feedback bias current
µA
42.5
40
50
57.5
60
1.4
FOSC oscillator frequency
KHz
IOUT=2A
VSAT
DC
ICL
saturation voltage
1.3
V
%
A
no outside circuit
VFB=0V force driver on
VFB=0V force driver on
VFB=12V force driver off
peak current
1.5
Max. Duty Cycle(ON)
Min. Duty cycle(OFF)
100
0
4.5
5.5
5
current limit for AP1512
2.5
3.2
3
no outside circuit
VFB=0V force driver on
peak current
ICL
current limit for AP1512A
4
A
no outside circuit
VFB=0V force driver on
no outside circuit
VFB=12V force driver off
VIN=60V
6
Output
Output = 0
-250
uA
IL
leakage
current
Output = -1
-2
5
-60
10
mA
mA
IQ
Quiescent Current
Standby Quiescent
Current
VFB=12V force driver off
ON/OFF pin=5V
450
500
0.6
-
ISTBY
350
1.3
0
uA
VIN=60V
VIL
VIH
Low (regulator ON)
High (regulator OFF)
-
ON/OFF pin logic input
V
threshold voltage
2.0
ON/OFF pin logic
input current
IH
IL
VLOGIC=2.5V (OFF)
-5
uA
ON/OFF pin input current VLOGIC=0.5V (ON)
-0.8
2.5
3.5
28
-10
TO220-5L
TO263-5L
TO220-5L
Junction to
θJC
Thermal Resistance
oC/W
oC/W
case
Thermal Resistance
With copper area of
approximately 3 in2
Junction to
ambient
θJA
TO263-5L
23
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
3/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Electrical Characteristics (Continued)
AP1512
Symbol
Parameter
Conditions
Typ.
Limit
Unit
10V < VIN < 60V
V
Output
VFB
AP1512-ADJ
AP1512-3.3V
AP1512-5V
0.2A < ILOAD < 2A
1.23
1.193/1.18
1.267/1.28
VMIN
VMAX
V
Feedback
VOUT programmed for 3V
10V < VIN < 60V
0.2A < ILOAD < 2A
3.168/3.135
3.432/3.465
VOUT
VOUT
Output voltage
3.3
5
VMIN
VMAX
V
10V < VIN < 60V
0.2A < ILOAD < 2A
4.8/4.75
5.2/5.25
Output voltage
VMIN
VMAX
V
15V < VIN < 60V
0.2A < ILOAD < 2A
11.52/11.4
12.48/12.6
VOUT
Output voltage
Efficiency
12
83
VMIN
VMAX
%
AP1512-12V
η
VIN = 30V, ILOAD = 2A
AP1512A
Symbol
Parameter
Conditions
Typ.
Limit
Unit
10V < VIN < 60V
V
Output
VFB
AP1512A-ADJ
AP1512A-3.3V
AP1512A-5V
0.2A < ILOAD
1.23
1.193/1.18
1.267/1.28
VMIN
VMAX
V
Feedback
VOUT programmed for 3V
10V < VIN < 60V
0.2A < ILOAD
3.168/3.135
3.432/3.465
VOUT
VOUT
Output voltage
Output voltage
3.3
5
VMIN
VMAX
V
10V < VIN < 60V
0.2A < ILOAD
4.8/4.75
5.2/5.25
VMIN
VMAX
V
15V < VIN < 60V
0.2A < ILOAD
11.52/11.4
12.48/12.6
VOUT
Output voltage
Efficiency
12
80
VMIN
VMAX
%
AP1512A-12V
η
VIN = 30V, ILOAD = 3A
Specifications with boldface type are for full operating temperature range, the other type are for TJ=25ºC.
Typical Performance Characteristics
AP1512A Current Limit v.s. Temperature
(Vcc=60V, Vout=5V)
AP1512A Efficiency v.s. Supply Voltage
(Vout=5V, Iout=3A)
4
3.8
3.6
3.4
3.2
3
100
90
80
70
60
50
40
30
20
10
0
-50
0
50
100
150
0
12
24
36
48
60
Supply Voltage(V)
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
4/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Typical Performance Characteristics (Continued)
AP1512 Efficiency v.s. Temperature
AP1512 Efficiency v.s. Temperature
(Vin=12V,Vout=5V,Io=2A)
(Vin=12V,Vout=3.3V,Io=2A)
100
100
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
-50 -30 -10 10 30 50 70 90 110 130 150
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
Temperature (TA
AP1512 Supply Current v.s. Temperature
(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
100
90
80
8
7
6
5
4
3
2
1
0
Switch OFF
Switch ON
70
60
50
40
30
20
10
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (TA) (°C)
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (TA) (°C)
AP1512 Output Voltage v.s. Temperature
(Vin=12V, Vout=5V, Io=1A)
AP1512 Threshold Voltage v.s. Temperature
(Vcc=12V, Vout=5V)
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-50
0
50
100
150
-50
0
50
100
150
Temperature (TA) (°C)
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
5/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Typical Performance Characteristics (Continued)
AP1512 Frequency v.s. Temperature
AP1512 Current Limit v.s. Temperature
(Vcc=12V, Io=1A, Vout=5V)
(Vcc=60V, Vout=5V)
60
55
50
45
40
3.6
3.4
3.2
3
2.8
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50
0
50
100
150
Temperature (TA) (°
AP1512 Quiescent Current v.s. Supply Voltage
(force driver off)
6.2
6
5.8
5.6
5.4
5.2
0
12
24
36
48
60
Supply Voltage(V)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
6/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Typical Application Circuit
(1) Adjustable Type Circuit
A. Vin=10V~60V, Vout=5V; Iout=0.3A~2A, Iout below 0.3A DCM
L1
1
2
1
2
Vin
Vout
Vin
OUTPUT
AP1512/A
47uH
5
4
R2
3K
C5
1n
SD
FB
D1
GND
3
SR360
ON/OFF
C1
100uF/100V
C2
1u
C7
0.1u
C3
470uF/16V
R3
1K
B. Vin=10V~60V, Vout=3.3V, Iout=0.3A~2A, Iout below 0.3A DCM
L1
1
2
1
2
Vin
Vout
Vin
OUTPUT
AP1512/A
47uH
5
4
R2
C5
1n
SD
FB
D1
2K
GND
3
SR360
ON/OFF
C1
100uF/100V
C2
1u
C7
0.1u
C3
470uF/16V
R3
1.2K
(2) Fixed Type Circuit
A. Vin=10V~60V, Vout=5V, Iout=0.7A~2A, Iout below 0.7A DCM
L1
1
2
1
2
Vin
Vout
Vin
OUTPUT
AP1512/A
47uH
5
4
SD
FB
D1
GND
3
SR360
C1
100uF/100V
C2
1u
C7
10n
C3
470uF/16V
ON/OFF
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
7/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Typical Application Circuit (Continued)
B. Vin=10V~60V, Vout=3.3V, Iout=0.7A~2A, Iout below 0.7A DCM
L1
1
2
1
2
Vin
Vout
Vin
SD
OUTPUT
33uH
AP1512/A
5
4
FB
D1
GND
3
SR360
C1
220uF/100V
C2
3.3u
C7
3.3u
C3
1500uF/16V
ON/OFF
Function Description
+VIN
Thermal Considerations
The AP1512/A is available in two packages, a 5-pin
TO-220 and a 5-pin surface mount TO-263.
This is the positive input supply for the IC switching
regulator. A suitable input bypass capacitor must be
present at this pin to minimize voltage transients
and to supply the switching currents needed by the
regulator.
The TO-220 package needs a heat sink under most
conditions. The size of the heatsink depends on the
input voltage, the output voltage, the load current
and the ambient temperature. The AP1512/A
junction temperature rises above ambient
temperature for a 2A load and different input and
output voltages. The data for these curves was
taken with the AP1512/A (TO-220 package)
operating as a buck
Ground
Circuit ground.
Output
Internal switch. The voltage at this pin switches
between (+VIN – VSAT) and approximately – 0.5V,
with a duty cycle of approximately VOUT / VIN. To
minimize coupling to sensitive circuitry, the PC
board copper area connected to this pin should be
kept a minimum.
switching regulator in an ambient temperature of
25oC (still air). These temperature rise numbers are
all approximate and there are many factors that can
affect these temperatures. Higher ambient
temperatures require more heat sinking.
Feedback
The TO-263 surface mount package tab is
designed to be soldered to the copper on a printed
circuit board. The copper and the board are the
heat sink for this package and the other heat
producing components, such as the catch diode
and inductor. The PC board copper area that the
package is soldered to should be at least 0.4 in2,
and ideally should have 2 or more square inches of
2 oz. Additional copper area improves the thermal
characteristics, but with copper areas greater than
approximately 6 in2, only small improvements in
heat dissipation are realized. If further thermal
improvements are needed, double sided, multilayer
PC board with large copper areas and/or airflow are
recommended.
Senses the regulated output voltage to complete
the feedback loop.
ON/OFF
Allows the switching regulator circuit to be
shutdown using logic level signals thus dropping
the total input supply current to approximately
150uA. Pulling this pin below a threshold voltage of
approximately 1.3V turns the regulator on, and
pulling this pin above 1.3V (up to a maximum of
40V) shuts the regulator down. If this shutdown
feature is not needed, the SD pin can be wired to
the ground pin or it can be left open, in either case
the regulator will be in the ON condition.
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
8/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Function Description (Continued)
The AP1512/A (TO-263 package) junction
temperature rise above ambient temperature with a
2A load for various input and output voltages. This
data was taken with the circuit operating as a buck
switching regulator with all components mounted on
a PC board to simulate the junction temperature
under actual operating conditions. This curve can
be used for a quick check for the approximate
junction temperature for various conditions, but be
aware that there are many factors that can affect
the junction temperature. When load currents
higher than 2A are used, double sided or multilayer
PC boards with large copper areas and/or airflow
might be needed, especially for high ambient
temperatures and high output voltages.
air, and moving air lowers the thermal resistance
even further.
Package
thermal
resistance
and
junction
temperature rise numbers are all approximate, and
there are many factors that will affect these
numbers. Some of these factors include board
size, shape, thickness, position, location, and even
board temperature. Other factors are, trace width,
total printed circuit copper area, copper thickness,
single or double-sided, multilayer board and the
amount of solder on the board. The effectiveness
of the PC board to dissipate heat also depends on
the size, quantity and spacing of other components
on the board, as well as whether the surrounding
air is still or moving. Furthermore, some of these
components such as the catch diode will add heat
to the PC board and the heat can vary as the input
voltage changes. For the inductor, depending on
the physical size, type of core material and the DC
resistance, it could either act as a heat sink taking
heat away from the board, or it could add heat to
the board.
For the best thermal performance, wide copper
traces and generous amounts of printed circuit
board copper should be used in the board layout.
(Once exception to this is the output (switch) pin,
which should not have large areas of copper.)
Large areas of copper provide the best transfer of
heat (lower thermal resistance) to the surrounding
Marking Information
(1) TO263-5L
( Top View )
-Output Type:
Blank: ADJ
-33: 3.3V
-50: 5.0V
-12: 1.2V
Logo
Part Number:
1512X-XX
Blank: AP1512
A: AP1512A
YY WW X
ID code
Xth week:01~52
Year:
"01" = 2001
"02" = 2002
(2) TO220-5L
( Top View )
-Output Type:
Blank: ADJ
-33: 3.3V
-50: 5.0V
-12: 1.2V
Logo
Part Number:
Blank: AP1512
A: AP1512A
1512X-XX
ID code
YY WW
X
Xth week: 01~52
Year:"01" = 2001
"02" = 2002
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
9/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Package Information
(1) Package Type: TO220-5L
E
A
F
ΦP
b
C
e
J1
e1
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
4.07
0.76
0.36
14.22
9.78
1.57
6.68
1.14
5.46
2.29
13.21
3.68
2.54
Nom.
4.45
0.89
0.50
14.86
10.16
1.71
6.81
1.27
6.16
2.74
13.97
3.81
2.73
Max.
4.82
1.02
0.64
15.50
10.54
1.85
6.93
1.40
6.86
3.18
14.73
3.94
2.92
Min.
Nom.
Max.
A
b
C
D
E
e
e1
F
H1
J1
L
Øp
Q
0.160
0.030
0.014
0.175
0.035
0.020
0.190
0.040
0.025
0.560
0.385
0.062
0.263
0.045
0.215
0.090
0.520
0.145
0.100
0.585
0.400
0.067
0.268
0.050
0.243
0.108
0.550
0.150
0.107
0.610
0.415
0.073
0.273
0.055
0.270
0.125
0.580
0.155
0.115
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
10/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Package Information (Continued)
(2) Package Type: TO263-5L
E
10.9
1.0
1.7
Land Pattern Recommendation (Unit: mm)
e
B
L1
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
4.07
0.66
0.36
1.14
8.65
9.78
1.57
14.61
2.29
-
Nom.
4.46
0.84
0.50
1.27
9.15
10.16
1.71
15.24
2.54
-
Max.
4.85
1.02
0.64
1.40
9.65
10.54
1.85
15.88
2.79
2.92
Min.
0.160
0.026
0.014
0.045
0.341
0.385
0.062
0.575
0.090
-
Nom.
0.176
0.033
0.020
0.050
0.360
0.400
0.068
0.600
0.100
-
Max.
0.191
0.040
0.025
0.055
0.380
0.415
0.073
0.625
0.110
0.115
A
B
C
C2
D
E
e
L
L1
L2
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
11/12
See Diodes Datasheet for TO263-5L package
AP1512/A
50KHz, 2A/3A PWM Buck DC/DC Converter
Package Information (Continued)
(3) Package Type: TO220-5L(R) Mechanical drawing
A
E
F
Q
D
H1
H2
d1
H3
d2
J1
b
J2
J3
e
J3
J2
A
J1
E
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
4.4
Nom.
4.6
Max.
4.7
Min.
Nom.
0.180
0.032
0.340
0.039
0.248
0.400
0.067
0.050
0.250
0.850
0.972
0.105
0.177
0.331
0.110
Max.
A
b
D
0.175
0.027
0.330
0.185
0.037
0.350
0.7
0.8
0.9
8.4
8.7
8.9
d1
d2
E
1.0
6.3
9.91
1.6
1.2
10.16
1.7
10.41
1.8
1.3
0.390
0.062
0.048
0.410
0.072
0.052
e
F
1.25
6.4
H1
H2
H3
J1
J2
J3
Q
20.8
23.9
21.6
24.7
2.7
22.4
25.5
0.820
0.942
0.880
1.002
3.7
2.5
4.5
5.3
3.0
0.147
0.100
0.207
0.120
8.4
2.8
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Oct. 14, 2005
12/12
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