AP1502-12S7A [DIODES]
Switching Regulator/Controller, Voltage-mode, 1A, 250kHz Switching Freq-Max, PDSO8,;
| 型号： | AP1502-12S7A |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Switching Regulator/Controller, Voltage-mode, 1A, 250kHz Switching Freq-Max, PDSO8, 光电二极管 |
| 文件： | 总5页 (文件大小：183K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AP1502
200KHz, 1A PWM Buck DC/DC Converter & 1 Linear CTRL
Features
General Descriptions
- Provides two regulated voltages
-one PWM Regulator (Direct output or Drive
NPN)
The AP1502 series are monolithic IC’s containing a
PWM and a linear power controller. The PWM
regulator has an ability of driving a 1A load without
additional external transistors. Due to the reduced
the number of external components, board space
can be saved easily. The external shutdown
function can be controlled by logic level and
switching the IC into standby mode. The internal
compensation provides a good line and load
regulation without external components. Regard the
protecting functions: Thermal shutdown is to
prevent the IC from damage by operating on over
temperature, and current limit is against over
current in the output switch. The AP1502 series
operates at a switching frequency of 200KHz thus
allowing smaller sized filter components than what
would be needed with lower frequency switching
regulators. Other features include a guaranteed
+2% tolerance on output voltage under specified
input voltage and output load conditions, and +10%
on the oscillator frequency. The version range
included for the PWM part fixed output voltages of
3.3V, 5V, 12V, and an adjustable version. The
linear controller is able to drive an external NPN
transistor, which a current limit set to 30mA
pre-driver of AP1502 series. The IC’s are available
in a standard SOP7 package for AP1502.
-one Linear Controller (Drive NPN or N-MOS)
- Output voltage: 3.3V, 5V, 12V and adjustable
- Adjustable version:
Output voltage range, 1.2V to 12V+2%
- 200KHz +10% fixed switching frequency
- Thermal-shutdown and current-limit protection
- Shutdown control input (EN pin)
- Operating voltage can be up to 20V
- Output current: 1A (PWM Controller)
- Package: SOP7 (AP1502)
- Low power standby mode
- Build-in switching transistors on chip
Applications
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
Pin Assignments
Pin Descriptions
Name
VCC
Description
Operating voltage input
(Top View)
OUT2
FB2
1
7
Switching output (Direct output or drive
external NPN)
OUT1
EN 2
GND
6
5
GND
Ground
FB1 3
FB1
FB2
OUT1
VCC
4
Output voltage feedback control
AP1502
EN
ON/OFF Shutdown
OUT2
Linear Controller Driving External NPN
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 Sep 29, 2004
1/5
AP1502
200KHz, 1A PWM Buck DC/DC Converter & 1 Linear CTRL
Ordering Information
AP1502 XXXX X X
Lead Free
Output version
Package
Packing
S7 : SOP-7L
Blank : Tube
Blank:Adjustable
33 : 3.3V
Blank : Normal
L : Lead Free Package
A
: Taping
50 : 5.0V
12 : 12V
Block Diagram
EN
VCC
Current
Sensor
Current
Source
bias
1.235V
2.5V
Start
up
Reference
Regulator
+
Comp
_
_
Comp
+
+
_
_
Amp
LPF
1A
Comp
Pre-driver
FB1
Switch
+
OUT1
GND
200kHz
OSC.
Thermal
Shutdown
+
_
Current
Limit
Amp
LPF
OUT2
FB2
Buffer
EN
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 29, 2004
2/5
AP1502
200KHz, 1A PWM Buck DC/DC Converter & 1 Linear CTRL
Absolute Maximum Ratings
Symbol
VCC
Parameter
Rating
22
Unit
V
Supply Voltage
VEN
VFB
VOUT1
VOUT2
PD
TST
TOP
VOP
-0.3≦V≦22
-0.3≦V≦22
-1
-0.3≦V≦22
Internally limited
-65 to 150
-40 to +125o
4.5 to 20
EN Pin input voltage
Feedback Pin voltage
Output voltage to ground
Linear driver voltage to ground
Power dissipation
Storage temperature
Operating temperature
Operating voltage
V
V
V
V
W
oC
oC
V
Electrical Characteristics (All Output Voltage Versions & Channels)
Unless otherwise specified AP1502, Vin=12V for 3.3V, 5V, adjustable version and Vin=20V for the 12V version. ILOAD = 0.2A.
Symbol
Parameter
Conditions
Min. Typ. Max.
Unit
IB1/2
Feedback bias current
VFB1/2=1.3V(FB1,adj Version)
100 1000
nA
FOSC Oscillator frequency
150 200
250
KHz
Saturation voltage
I
OUT=0.8A
VFB1=0 force driver on
OUT=20mA(no external
N-MOS)
FB1=0V force driver on
VFB1 =0V force driver on
VSAT1
0.9
V
(VCC-VOUT1
)
I
NPN
or
Saturation voltage
(VCC-VOUT2
VSAT2
0.6
V
)
V
Max. Duty Cycle(ON)
Min. Duty cycle(OFF)
100
0
%
%
DC
ICL1
V
FB1 =12V force driver off
peak current
Current limit(OUT1)
1.1
A
VFB1 =0V force driver on
VFB1 =12V force
ILEAK1 OUT1 Leakage Current driver off
CC=20V
OUT1= 0 V
50
30
uA
OUT1= -1V
2
6
mA
mA
V
IQ
Quiescent Current (VCC) VFB1/2=12V force driver off
Standby Quiescent
Current
EN(ON/OFF) pin=5V
ISTBY
60
100
uA
VCC=20V
VIL
VIH
low (regulator ON)
-
0.6
-
EN pin logic input
threshold voltage
1.3
2.0
V
High (regulator OFF)
IH
EN pin input current
EN pin input current
Current limit (OUT2)
VLOGIC=2.5V (regulator OFF)
VLOGIC =0.5V (regulator ON)
VCC=5V, VOUT2=VFB2=0V
-0.03
uA
IL
0.3
ICL2
50
mA
4.75V < VCC1 < 20V
OUT2
Feedback
VFB2
3.0V < VCC2 < 20V
1.225 1.25 1.275
V
Voltage
0.2A < ILOAD < 1A , TA=25OC
θJC
θJA
Thermal Resistor
Thermal Resistor
Junction to Case
Junction to Ambient
15
90
OC/W
OC/W
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 29, 2004
3/5
AP1502
200KHz, 1A PWM Buck DC/DC Converter & 1 Linear CTRL
Electrical Characteristics (Continued)
Symbol
Parameter
Conditions
4.5V < VCC< 20V
0.2A < ILOAD < 0.9A
VIN = 12V, ILOAD=0.9A,
VOUT programmed for 3V
4.75V < VCC < 20V
Min.
Typ.
Max. Unit
Output
V
VFB1
1.225
1.25
1.275
Feedback
AP1502-ADJ
η
%
Efficiency
73
V
%
V
VOUT1
Output voltage
Efficiency
3.23
4.90
3.3
73
5
3.37
5.10
0.2A < ILOAD < 0.9A
AP1502-3.3V
AP1502-5V
AP1502-12V
η
VIN = 12V, ILOAD=0.9A
7.0V < VCC < 20V
VOUT1
Output voltage
Efficiency
0.2A < ILOAD < 0.9A
η
%
V
VIN = 12V, ILOAD=0.9A
15V < VCC < 20V
77
12
82
VOUT1
Output voltage
Efficiency
11.75
12.25
0.2A < ILOAD < 0.9A
η
%
VIN = 20V, ILOAD=0.9A
Typical Application Circuit
VCC2=3.3V
VCC2=3.3V
V
OUT2=1.8V
=1.8V
VOUT2
120
120
1
2
3
4
7
6
5
OUT2
EN
FB2
GND
OUT
Ohm
Ohm
1
2
3
4
OUT2
EN
FB2
7
6
5
220uF
220uF
240
Ohm
240
Ohm
VCC1
GND
FB1
VCC
FB1
VCC
VOUT1=3.3V
470uF
VOUT1=3.3V
47uH
VCC1
VCC1
OUT1
1
420
47uH
420
Ohm
Ohm
10uF
4.7K
Ohm
470uF
470uF
470uF
240
Ohm
240
Ohm
AP1502 (1)
AP1502 (2)
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 29, 2004
4/5
AP1502
200KHz, 1A PWM Buck DC/DC Converter & 1 Linear CTRL
Marking Information
( Top View )
7
5
Logo
Output Type
Blank : Adj
50 : 5.0V
33 : 3.3V
12 : 12V
AP1502 XX
YY WW X X
Blank: normal
L: Lead Free Package
ID code: internal
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
1
4
Package Information
Package Type: SOP-7L
C2
C3
B1 B2
A
E
e
C1
D
C
β
F
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
A
B1
B2
C
5.79
3.83
3.78
4.80
1.57
0.32
1.17
0.19
5.99
3.91
3.86
4.87
1.67
0.4
1.27
0.22
1.04REF
0.68
1.45
7o
6.19
3.99
3.94
4.94
1.77
0.48
1.37
0.25
0.228
0.151
0.149
0.189
0.062
0.013
0.046
0.007
0.236
0.154
0.152
0.192
0.066
0.016
0.050
0.009
0.041REF
0.027
0.057
7o
0.244
0.157
0.155
0.194
0.070
0.019
0.054
0.010
C1
C2
C3
D
E
e
0.48
1.35
0.88
1.55
0.019
0.053
0.035
0.061
F
β
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 29, 2004
5/5
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