AP1509-50SL [ANACHIP]
150KHz, 2A PWM Buck DC/DC Converter; 为150KHz ， 2A PWM降压型DC / DC转换器
| 型号： | AP1509-50SL |
| 厂家： | 
ANACHIP CORP |
| 描述： | 150KHz, 2A PWM Buck DC/DC Converter |
| 文件： | 总8页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀ Features
ꢀ General Description
- Output voltage: 3.3V, 5V, 12V and adjustable
output version
The AP1509 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of
driving a 2A 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 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. If current
limit function occurred and VFB is down to 0.5V
below, the switching frequency will be reduced.
- Adjustable version output voltage range, 1.23V to
18V+4%
- 150KHz +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 22V
- Output load current: 2A
- SOP-8L packages
- Low power standby mode
- Built-in switching transistor on chip
ꢀ Applications
The AP1509 series operates at
a switching
frequency of 150KHz 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 8-lead SOP-8 package.
- 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)
V
IN
GND
GND
GND
GND
1
8
Output
FB
SD
2
3
4
7
6
5
Output
GND
FB
Ground
SOP-8L
Output voltage feedback control
ON/OFF Shutdown
SD
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. 0.1 Nov 27, 2003
1/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀ Ordering Information
AP1509 XX X X X
Package
S: SOP-8L Blank : Normal
Output version
Lead Free
Packing
Blank : Adjustable
-33 : 3.3V
Blank : Tube
L : Lead Free Package A : Taping
-50 : 5.0V
-12 : 12V
ꢀ Block Diagram
SD
VIN
200mV
220mV
Current
Source
bias
1.235V
2.5V
Start
up
Reference
Regulator
+
Comp
_
_
Comp
+
Frequecy
compen-
sation
+
_
_
Amp
2A
Comp
+
Pre-driver
FB
Switch
Output
Gnd
150kHz
OSC.
Thermal
Limit
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
2/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀ Absolute Maximum Ratings
Symbol
VCC
Parameter
Rating
+24
Unit
V
Supply Voltage
VSD
VFB
VOUT
PD
TST
ON/OFF Pin input voltage
Feedback Pin voltage
Output voltage to Ground
Power dissipation
Storage temperature
Operating temperature
Operating voltage
-0.3 to +18
-0.3 to +18
-1
V
V
V
W
oC
oC
V
Internally limited
-65 to +150
-40 to +125
+4.5 to +22
TOP
VOP
ꢀ Electrical Characteristics (All Output Voltage Versions)
LOAD = 0.5A
USnleysms botohelrwise specified, V =12V for 3.3V, 5V, adjustable version and V =18V for the 12V version. I
Parameter
Feedback bias current
Conditions
Min.
Typ.
Max.
Unit
nA
IN
IN
VFB=1.3V
-50
IB
-10
(Adjustable version only)
-100
173
173
127
150
FOSC
FSCP
Oscillator frequency
KHz
KHz
110
Oscillator frequency of When current limit occurred
5
15
25
1.4
1.5
short circuit protect
and VFB < 0.5V, Ta=25 oC
IOUT=2A
VSAT
DC
ICL
Saturation voltage
1.25
V
%
A
No outside circuit
VFB=0V force driver on
VFB=0V force driver on
VFB=12V force driver off
Peak current
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
100
0
Current limit
No outside circuit
VFB=0V force driver on
No outside circuit
VFB=12V force driver off
VIN=22V
3
Output
Output = 0
-200
uA
IL
leakage
current
Output = -1
-5
5
mA
mA
IQ
ISTBY
VIL
Quiescent Current
Standby Quiescent
Current
VFB=12V force driver off
ON/OFF pin=5V
10
150
200
0.6
70
uA
VIN=22V
Low (regulator ON)
-
ON/OFF pin logic input
threshold voltage
1.3
V
VIH
High (regulator OFF)
2.0
-
ON/OFF pin logic input
current
IH
IL
VLOGIC=2.5V (OFF)
-0.01
-1
uA
ON/OFF pin input current VLOGIC=0.5V (ON)
-0.1
15
Junction to
case
Thermal Resistance
SOP-8L
oC/W
oC/W
Θ
JC
Thermal Resistance
With copper area of
approximately 3 in2
Junction to
ambient
Θ
SOP-8L
70
JA
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
3/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀ Electrical Characteristics (Continued)
Symbol
Parameter
Conditions
Typ.
Limit
Unit
4.5V < VIN < 22V
0.2A < ILOAD < 2A
VOUT programmed for
3V
V
Output
VFB
1.23
1.193/
VMIN
VMAX
1.18
Feedback
AP1509-ADJ
1.267/1.28
η
Efficiency
VIN = 12V, ILOAD=2A
76
3.3
78
5
%
V
4.75V < VIN < 22V
0.2A < ILOAD < 2A
3.168/3.135
VOUT
Output voltage
Efficiency
VMIN
VMAX
3.432/
3.465
AP1509-3.3V
AP1509-5V
AP1509-12V
η
VIN = 12V, ILOAD=2A
%
V
7V < VIN < 22V
4.8/4.75
5.2/5.25
VOUT
Output voltage
Efficiency
VMIN
VMAX
0.2A < ILOAD < 2A
η
VIN = 12V, ILOAD=2A
83
12
90
%
V
15V < VIN < 22V
0.2A < ILOAD < 2A
11.52/
11.4
VOUT
Output voltage
Efficiency
VMIN
VMAX
12.48/12.6
η
VIN = 15V, ILOAD = 2A
%
Specifications with boldface type are for full operating temperature range, the other type are for TJ=25ºC.
ꢀTypical Application Circuit
FB
12V
3
3.3V/2A
L1
DC Input
Output
Output Load
AP1509
-33
1
4
2
Vin
Inductor
5
6
7
8
Gnd Gnd Gnd Gnd
SD
C
in
Co
D1
Capacitor
Capacitor
Schottky Diode
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
4/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀTypical Performance Characteristics
AP1509 Efficiency v.s. Temperature
(Vin=12V,Vout=5V,Io=2A)
AP1509 Efficiency v.s. Temperature
(Vin=12V,Vout=3.3V,Io=2A)
86
85
84
83
82
81
80
79
78
77
76
75
81
80
79
78
77
76
75
74
73
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
AP1509 Saturation Voltage v.s. Temperature
(Vcc=12V,Vfb=0V,VSD=0)
AP1509 Switch Current Limit v.s. Temperature
(Vcc=12V,Vfb=0V)
1.4
5.5
1.3
5
1.2
2A
1.1
4.5
4
1A
1
0.5A
0.9
3.5
3
0.8
0.7
-50
-30
-10
10
30
50
70
90
-50
-25
0
25
50
75
100
125
Temperature (TA)ꢀ(°C)
Temperature (TA) (°C)
AP1509 Supply Current v.s. Temperature
(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
15
14
13
12
11
10
9
60
55
50
45
40
35
30
Switch OFF
8
Switch ON
7
6
5
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
5/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀTypical Performance Characteristics (Continued)
AP1509 Threshold Voltage v.s. Temperature
AP1509 ON/OFF Current v.s. ON/OFF Voltage
(Vcc=12V , Io=100mA)
(Vin=12V)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.9
0.8
0
3
6
9
12
15
18
21
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
ON/OFF Voltage (V)
AP1509 Frequency v.s. Temperature
(Vcc=12V , Io=500mA ,Vout=5V)
AP1509 Feedback Current v.s. Temperature
(Vcc=12V , Vout=5V,Vfb=1.3V)
170
165
160
155
150
145
10
0
-10
-20
-30
-40
140
-50
-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) (°C)
AP1509 Output Voltage v.s. Temperature
(Vin=12V ,Io=2A)
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
2.95
2.9
-40 -20
0
20 40 60 80 100 120 140 160
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
6/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀFunction Description
Pin Functions
Thermal Considerations
The SOP-8 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 AP1509 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
+VIN
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.
AP1509 (SOP-8 package) operating as
a
Ground
buck-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.
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.
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
air, and moving air lowers the thermal resistance
even further.
Feedback
Senses the regulated output voltage to complete
the feedback loop.
SD
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
18V) 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.
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, multi-layer 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.
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
7/8
AP1509
150KHz, 2A PWM Buck DC/DC Converter
ꢀMarking Information
SOP-8L
(Top view)
Part Number
Output Type:
AC
Logo
Blank: Adjustable
Blank: normal
L: Lead Free Package
1509-XX
33: 3.3V
YYWW XX
Date Code
50: 5.0V
X: Internal code
WW: Nth week
YY: Year
12: 12V
ꢀ Package Information
Package Type: SOP-8L
L
VIEW "A"
0.015x45
D
(4X)
e
(4X)
7
7
B
VIEW "A"
y
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
1.40
0.10
1.30
0.33
0.19
4.80
3.70
-
Nom.
1.60
-
Max.
1.75
0.25
1.50
0.51
0.25
5.30
4.10
-
Min.
Nom.
0.063
-
Max.
0.069
A
A1
A2
B
0.055
0.040
0.051
0.013
0.0075
0.189
0.146
-
0.100
0.059
0.020
0.010
0.209
0.161
-
1.45
0.41
0.20
5.05
3.90
1.27
5.99
0.71
-
0.057
0.016
0.008
0.199
0.154
0.050
0.236
0.028
-
C
D
E
e
H
L
5.79
0.38
-
6.20
1.27
0.10
8O
0.228
0.015
-
0.244
0.050
0.004
8O
y
0O
-
0O
-
θ
Anachip Corp.
www.anachip.com.tw
Rev.0.1 Nov 27, 2003
8/8
相关型号：
AP1509-50SLA
Switching Regulator, Voltage-mode, 3A, 173kHz Switching Freq-Max, PDSO8, LEAD FREE, SOP-8
ICT
©2020 ICPDF网 联系我们和版权申明