APE1702S-12 [A-POWER]
IC SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO5, ROHS COMPLIANT, TO-263, 5 PIN, Switching Regulator or Controller;
| 型号： | APE1702S-12 |
| 厂家： | 
ADVANCED POWER ELECTRONICS CORP. |
| 描述： | IC SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO5, ROHS COMPLIANT, TO-263, 5 PIN, Switching Regulator or Controller 开关 |
| 文件： | 总10页 (文件大小：468K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Advanced Power
Electronics Corp.
APE1702
150KHz, 3A PWM BUCK DC/DC CONVERTER
FEATURES
DESCRIPTION
The APE1702 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of driving a
3A load without additional transistor. It saves board space.
The external shutdown function can be controlled by logic
level and then come into standby mode. The internal compen-
sation makes feedback control having 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 occurs and VFB
is down below 0.5V the switching frequency will be reduced.
The APE1702 series operates at a switching frequency of
150KHz thus allow 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 con-
ditions, and +15% on the oscillator frequency. The output
version included fixed 3.3V, 5V, 12V and an adjustable type.
The chips are available in a 5-Lead TO-263 and 5-Lead
TO-220 package.
Output Voltage : 3.3V, 5V, 12V and Adjustable
Output Voltage
Adjustable Version Output Voltage Range, 1.23V
to 19.5V+4%
150KHz +15% Fixed Switching Frequency.
Voltage Mode Non-synchronous PWM Control.
Thermal-shutdown and Current-limit Protection.
ON/OFF Shutdown Control Input.
Short Circuit Protect(SCP)
Operating Voltage can be up to 22V
Output Load Current 3A
5-Lead TO-263/TO-220
Low Power Standby Mode.
Built-in Switching Transistor on Chip
RoHS Compliant
TYPICAL APPLICATION
1. ADJUSTABLE OUTPUT VOLTAGE VERSION
2. ADJUSTABLE OUTPUT VOLTAGE VERSION WITH DELAYED STARTUP
Data and specifications subject to change without notice
1
200803105
Advanced Power
Electronics Corp.
APE1702
TYPICAL APPLICATION
3. FIXED OUTPUT VOLTAGE VERSION
ORDERING INFORMATIO
ORDER INFORMATION
APE1702X-XX
PACKAGE TYPE OUTPUT VOLTAGE
33 : 3.3V
50 : 5.0V
12 : 12V
S : TO-263-5L
P : TO-220-5L
Blank : ADJ
2
Advanced Power
Electronics Corp.
APE1702
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Maximum Supply Voltage(VCC)
ON/OFF PIN Input Voltage(VEN)
Feedback PIN Voltage(VFB)
+24V
-0.3V to VCC
-0.3V to 16V
-0.7 to 24V
(TJ-TA)/RthJA
-65°C To 150°C
-40°C To 125°C
+4.5V to +22V
3.5°C/W
Output Voltage to Ground(VOUT)
Power Dissipation(PD)
Storage Temperature Range(TST)
Operating Temperature Range(TOP)
Operating Supply Voltage(VOP)
Thermal Resistance from Junction to Case(RthJC
)
Thermal Resistance from Junction to Ambient(RthJA)
20°C/W
Note. Rth JA is measured with the PCB copper area(need connect to Metal tab) of approx. 3 in2 (multi-layers)
PACKAGE INFORMATION
TO-263-5L
TO-220-5L
ELECTRICAL SPECIFICATIONS
(VIN=12V, TA=25℃, unless otherwise specified)
UNITS
Parameter
SYM
TEST CONDITION
MIN
TYP MAX
Quiescent Current
ICCQ
VFB=12V force driver off
VFB=1.3V
-
-
-
-
-
4
8
mA
-10
-50.0
IFB
Feedback Bias Current
nA
(ADJ Version Only)
VEN=5V
-10 -100.0
35
35
100
100
uA
uA
ISD
Shutdown Supply Current
VCC=22V
Pear Current, No outside circuit
VFB=0V force driver on
VFB=0V force driver on
VFB=12V force driver off
3.3
-
-
A
ICL
Current Limit
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
-
100
0
-
%
DC
-
-
%
127
110
150
-
173
173
KHz
KHz
KHz
KHz
FOSC
FSCP
VSAT
Oscillation Frequency
Oscillation Frequency of Short
Circuit Protect
(Adjustable) When VFB < 0.5V
(Fixed) When < VOUT x 40%
IOUT=2A, No outside circuit
VFB=0V force driver on
-
-
60
-
1.5
1.6
Saturation Voltage
1.3
V
3
Advanced Power
Electronics Corp.
APE1702
ELECTRICAL SPECIFICATIONS(Cont.)
Parameter
SYM
VIH
VIL
TEST CONDITION
High (regulator ON)
MIN
TYP MAX UNITS
2
-
-
V
V
EN PIN Logic Input Threshold Voltag
1.3
Low (regulator OFF)
VEN=2.5V(OFF)
VEN=0.5V(ON)
0.6
ISH
-
-0.1
-
-0.5
-0.01
uA
uA
EN PIN Input Current
ISL
-
No outside circuit
SW PIN
Leakage
SW PIN=0V
-
-
-200
uA
ISWL
V
FB=12V force driver on
Current
SW PIN=-0.8V
VCC=22V force driver off
-5
mA
°C
-
-
-
-
Thermal Shutdown Temp.
TSD
135
Version
Characteristics
Symbol
VFB
Conditions
4.5V < VCC < 22V
MIN
TYP MAX UNITS
1.267/
Output
Feedback
Voltage
1.193/
1.180
1.23
V
0.2A < ILOAD <3A
1.280
APE1702-ADJ
VOUT programmed for 3.3V
Efficiency
V
CC=12V, ILOAD=3A
η
-
74
-
%
4.75V < VCC < 22V
0.2A < ILOAD <3A
3.168/
3.135
3.432/
3.465
Output
Voltage
VOUT
3.3
V
APE1702-3.3V
APE1702-5.0V
APE1702-12V
Efficiency
V
CC=12V, ILOAD=3A
η
-
75
-
%
7V < VCC < 22V
0.2A < ILOAD <3A
4.80/
4.75
5.20/
5.25
Output
Voltage
VOUT
5.0
V
Efficiency
V
CC=12V, ILOAD=3A
η
-
80
12
-
%
15V < VCC < 22V
0.2A < ILOAD <3A
VCC=15V, ILOAD=3A
11.52/
11.4
12.48/
12.6
Output
Voltage
VOUT
V
Efficiency
η
-
89
-
%
PIN DESCRIPTIONS
PIN SYMBOL
VSS
PIN DESCRIPTION
GND Pin
FB
EN
Control Voltage Feedback Control for ADJ Version
ON/OFF Shutdown
OUT
SW
VCC
Output Voltage Feedback Control for Fixed Version
Switching Output
IC Power Supply Pin
4
Advanced Power
Electronics Corp.
APE1702
BLOCK DIAGRAM
FUNCTION DESCRIPTION
PIN FUNCTION
VCC
This is positive input supply for the IC switching regulator. A suitable input bypass
capacitor must be presented at this pin to minimize voltage transients and to supply
the switching currents needed by the regulator.
VSS
Circuit ground.
SW
Internal Switch. The voltage at this pin switches between (+VCC - VSAT) and
approximately - 0.5V, with a duty cycle of approximately VOUT / VCC. To minimize
coupling to sensitive circuitry, the PC board copper area connected to this pin should
be minimized.
FEEDBACK
Senses in the regulated output voltage to complete the feedback loop.
5
Advanced Power
Electronics Corp.
APE1702
FUNCTION DESCRIPTION
EN
Allows the switching regulator circuit to be shutdown using logic level signals thus
dropping the total input supple current to approximately 100uA. 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 VCC) shuts the regulator down. if this shutdown
feature is not needed, the EN pin can be wired to the ground pin.
THERMAL CONSIDERATIONS
The TO-263-5L package needs a heat sink under most conditions. The size of
the heat sink depends on the input voltage, the output voltage, the load current and
the ambient temperature. The APE1702 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 APE1702 (TO-263-5L package)
operating as a buck-switching regulator in an ambient temperature of 25°C (still air).
These temperature increments are all approximate and are affected by many factors.
Higher ambient temperatures required more heat sinker.
For the best thermal performance, wide copper traces and generous amounts of
printed circuit board copper (need connect to the VSS pins) should be used in the
board layout, (One exception is the SW pin, which should not have large areas of
copper.) to the surrounding air, and moving air lowers the thermal resistance even
further.
Package thermal resistance and junction temperature increments are all
approximate. The increments are affected by a lot of factors. 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.
6
Advanced Power
Electronics Corp.
APE1702
Typical Characteristics
VFB VS VIN
ICCQ VS VIN
ICCQ VS VIN
VFB VS VIN
1.28
6.00
5.00
4.00
3.00
2.00
1.00
0.00
1.26
1.24
1.22
1.20
1.18
4
6
8
10 12 14 16 18 20 22 24
Vin(V)
4
6
8
10 12 14 16 18 20 22 24
Vin(V)
FOSC VS VIN
FOSC VS TEMPERATURE
Fos c VS VIN
FOSC VS TEMP
170
165
160
155
150
145
140
180
170
160
150
140
130
120
-20
0
20 40 60 80 100 120
temp (
4
6
8
10 12 14 16 18 20 22 24
Vin(V)
)
℃
VFB VS TEMPERATURE
ICCQ VS TEMPERATURE
VFB VS TEMP
ICCQ VS TEMP
1.28
1.26
1.24
1.22
1.20
1.18
6.00
5.00
4.00
3.00
2.00
1.00
0.00
-20
0
20 40 60 80 100 120
temp (
-20
0
20 40 60 80 100 120
temp (
)
℃
)
℃
7
Advanced Power
Electronics Corp.
APE1702
Typical Characteristics
Output Ripple
Power on test wave
(VIN=12V, VOUT=5V, IOUT=3A)
(VIN=12V, VOUT=5V, IOUT=3A )
VOUT (AC)
VOUT
V
IN
SW
ISW
SW
ISW
Load Transient Response
EN on test wave
(VIN=12V, VOUT=5V, IOUT=0.2~3A)
(VIN=12V, VOUT=5V, IOUT=3A )
V
OUT (AC)
V
IN
VOUT
SW
SW
ISW
ISW
Efficiency
Efficiency
(VIN=12V, VOUT=5.0V)
(VIN=12V, VOUT=3.3V)
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Iout(A)
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Iout(A)
8
ADVANCED POWER ELECTRONICS CORP.
Package Outline : TO-263-5L
Millimeters
SYMBOLS
MIN
NOM MAX
A
b
4.40
0.66
0.00
0.36
2.29
4.60
0.79
0.15
0.43
2.54
4.80
0.91
0.30
0.50
2.79
L4
c
L1
E
9.80 10.10 10.40
7.60
E1
c2
L2
D
1.25
1.35
1.27
8.80
5.90
1.70
1.45
8.60
9.00
D1
e
L
14.60 15.20 15.80
0° 4° 8°
θ
1.All Dimensions Are in Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : TO-263-5L
Part Number
Output voltage
1702S-XX
Package Code
LOGO
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
9
ADVANCED POWER ELECTRONICS CORP.
Package Outline : TO-220-5L
Millimeters
SYMBOLS
MIN NOM MAX
4.07 4.45 4.82
0.76 0.89 1.02
0.36 0.50 0.64
14.22 14.86 15.50
9.78 10.16 10.54
1.57 1.71 1.85
6.68 6.81 6.93
1.14 1.27 1.40
5.46 6.16 6.86
2.29 2.74 3.18
13.21 13.97 14.73
3.68 3.81 3.94
2.54 2.73 2.92
A
b
C
D
E
e
e1
F
H1
J1
L
φp
Q
1.All Dimensions Are in Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information & Packing : TO-220-5L
Part Number
Output voltage
1702P-XX
Package Code
LOGO
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
10
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