APE1707MP-HF [A-POWER]
IC SWITCHING REGULATOR, Switching Regulator or Controller;
| 型号： | APE1707MP-HF |
| 厂家： | 
ADVANCED POWER ELECTRONICS CORP. |
| 描述： | IC SWITCHING REGULATOR, Switching Regulator or Controller 开关 |
| 文件： | 总9页 (文件大小：903K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Advanced Power
Electronics Corp.
APE1707
150KHz, 2A PWM BUCK DC/DC CONVERTER
FEATURES
DESCRIPTION
Output Voltage : 3.3V, 5V, 12V and Adjustable
The APE1707 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of driving a
2A 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
compensation 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.
Output Voltage
Adjustable Version Output Voltage Range, 1.23V
to 38.5V
150KHz 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 40V
Output Load Current 2A
The APE1707 series operates at a switching frequency
of 150KHz thus allow smaller sized filter components than
what would be needed with lower frequency switching
regulators. The output version included fixed 3.3V, 5V, 12V,
and an adjustable type. The chips are available in SO-8,
ESOP-8, TO-263-5L and TO-252-5L packages.
SO-8, ESOP-8, TO-263-5L and TO-252-5L
Pb-Free & Halogen Free Packages.
Low Power Standby Mode.
Built-in Switching Transistor on Chip
TYPICAL APPLICATION
1. ADJUSTABLE OUTPUT VOLTAGE VERSION
VIN=12V
L1
Vout=5.0V/2A
R1
1
2
47uH
U1
4.7K
Vcc
SW
FB
Vss
Vss
Vss
Vss
D1
B340A
C1
470uF
C2
0.1uF
C3
470uF
C6
0.1uF
R2
1.5K
EN
APE1707
Data and specifications subject to change without notice
1
201202162
Advanced Power
Electronics Corp.
APE1707
TYPICAL APPLICATION
2. ADJUSTABLE OUTPUT VOLTAGE VERSION WITH DELAYED STARTUP
VIN=12V
L1
Vout=2.5V/2A
1
2
33uH
U1
Vcc
SW
FB
R1
1.8K
Vss
Vss
Vss
Vss
C4
D1
B240A
0.1uF
C1
470uF
C2
0.1uF
C3
470uF
C6
0.1uF
R2
1.8K
EN
R3
APE1707
ON/OFF
100k
VOUT = VFB x (1 + R1/R2 ), VFB = 1.23V, R2 = 0.47K ~ 3K
Table 1 Resistor select for output voltage setting
VOUT
R2
R1
4.7K
5.6K
2.5K
3.0K
1.8K
0.82K
1.5K
1.8K
1.5K
1.8K
1.8K
1.8K
5V
3.3V
2.5V
1.8V
L1 recommend value (IOUT=2A,)
VOUT
2.5V
33uH
33uH
3.3V
33uH
33uH
5V
12V
NA
VIN=12V
VIN=24V
47uH
47uH
68uH
3. FIXED OUTPUT VOLTAGE VERSION
VIN=12~24V
L1
Vout=3.3V/2A
1
2
33uH
U1
Vcc
SW
FB
Vss
Vss
Vss
Vss
D1
B340A
C1
470uF
C2
0.1uF
C3
470uF
C6
0.1uF
EN
APE1707-33
2
Advanced Power
Electronics Corp.
APE1707
TYPICAL APPLICATION
4. INVERTING -5V REGULATOR WITH DELAYED STARTUP
VIN=5~20V
2A/30V
33uH
Vcc
SW
FB
Vss
Vss
Vss
Vss
0.1uF
100k
100uF
IN5400
0.1uF
220uF
0.1uF
3A/20V
220uF
VOUT
-5V200mA
EN
APE1707-50
ORDERING / PACKAGE INFORMATION
TO-252-5L (Side View)
TO-263-5L (Side View)
APE1707X-XX-HF
Halogen Free
Package Type
Output Voltage
( Top View )
33:3.3V
50:5.0V
12: 12V
5 EN
4 FB
3 VSS
2 SW
1 VCC
M : SO-8
5 EN
4 FB
3 Vss
2 SW
1 Vcc
Metal
Tab
Vss
MP : ESOP-8
H : TO-252-5L
S : TO-263-5L
Metal
Tab
Vss
Blank:ADJ
( Top View )
(
)
Top View
(
)
Top View
VSS
1
2
3
4
VSS
VCC
SW
8
7
6
5
1
2
3
4
VCC
SW
8
7
6
5
VSS
VSS
VSS
VSS
VSS
VSS
VSS
FB
EN
FB
EN
SO-8
ESOP-8
3
Advanced Power
Electronics Corp.
APE1707
ABSOLUTE MAXIMUM RATINGS(at TA=25°C)
Maximum Supply Voltage(VCC) ------------------------- +45V
ON/OFF PIN Input Voltage(VEN) ------------------------ -0.3V to 40V
Feedback PIN Voltage(VFB) ------------------------------ -0.3V to 12V
Output Voltage to Ground(VOUT) ------------------------ -0.8V
Power Dissipation(PD) ------------------------------------- (TJ-TA)/Rthja
Storage Temperature Range(TST) --------------------- -65°C To 150°C
Operating Junction Temperature Range(TJ) -------- -20°C To 125°C
Operating Supply Voltage(VOP
)
+4.5V to +40V
Thermal Resistance from Junction to Case(Rthjc
)
TO-263-5L
TO-252-5L
SO-8
3.5°C/W
8°C/W
20°C/W
10°C/W
ESOP-8
Thermal Resistance from Junction to Ambient(Rthja
)
TO-263-5L
TO-252-5L
SO-8
25°C/W
35°C/W
60°C/W
40°C/W
ESOP-8
Note. R thja is measured with the PCB copper area(need connect to VSS pins) of approximately 1.5 in 2 (Multi-layer).
ELECTRICAL SPECIFICATIONS
(Unless otherwise specified, TA=25°C, VCC=12V for 3.3V, 5V, adjustable version and VCC=18V for the 12V version.
ILOAD = 0.2A)
UNITS
Parameter
SYM
TEST CONDITION
VFB=12V force driver off
VFB=1.3V
MIN
TYP MAX
IQ
Quiescent Current
-
4
8
mA
IFB
Feedback Bias Current
-
-
-10
-50
nA
uA
(Adjustable version only)
EN pin=5V
ISD
Shutdown Supply Current
Oscillator Frequency
100
200
VCC=40V
FOSC
FSCP
127
150
50
50
100
0
173
KHz
KHz
KHz
(Adjustable) When VFB<0.5V
(Fixed)When < VOUT*40%
VFB=0V force driver on
-
-
-
-
-
-
-
-
Oscillator Frequency of Short
Circuit Protect
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
DC
%
VFB=12V force driver off
Pear current, No outside circuit
ICL
Current Limit
2.5
-
-
A
%
V
V
FB=0V force driver on
IOUT = 0.2 to 2A
OUT=2A, No outside circuit
Load Regulation( △VOUT/VOUT
)
△VOUT
VSA T
-
-
0.6
1.2
1.2
1.4
I
Saturation Voltage
VFB=0V force driver on
No outside circuit, VFB=12V force
driver off
SW Pin=0V
-
-
-
-200
-
uA
SW Pin Leakage
Current
ISW L
VCC=40V force driver off
SW Pin=-0.8V
-5
mA
4
Advanced Power
Electronics Corp.
APE1707
ELECTRICAL SPECIFICATIONS(Cont.)
UNITS
Parameter
SYM
VIL
VIH
IH
TEST CONDITION
MIN
TYP MAX
Low (regulator ON)
-
2
-
0.6
EN Pin Logic Input Threshold
Voltage
1.3
-
V
High (regulator OFF)
VEN=2.5V (OFF)
VEN=0.5V (ON)
EN Pin Logic Input Current
EN Pin Input Current
-0.1
-0.01
135
-10
-1
-
uA
°C
IL
-
TSD
Thermal Shutdown Temp
-
Version
Characteristics
Symbol
Conditions
ILOAD =0.2A
MIN
TYP MAX UNITS
Output Feedback
Voltage
VFB
1.193 1.23 1.267
V
APE1707-ADJ
VOUT programmed for 3.3V
Efficiency
η
V
CC=12V, ILOAD=2A
ILOAD =0.2A
CC=12V, ILOAD=2A
ILOAD =0.2A
CC=12V, ILOAD=2A
ILOAD =0.2A
CC=15V, ILOAD=2A
-
79
3.3
80
5.0
84
12
90
-
%
V
VOUT
3.2
3.4
Output Voltage
Efficiency
APE1707-3.3V
APE1707-5.0V
APE1707-12V
η
V
-
-
%
V
VOUT
4.85
5.15
Output Voltage
Efficiency
η
V
-
11.64
-
-
12.36
-
%
V
Output Voltage
VOUT
Efficiency
η
V
%
PIN DESCRIPTIONS
PIN SYMBOL
VSS
PIN DESCRIPTION
GND pin
FB
EN
SW
VCC
Output voltage feedback control
ON/OFF shutdown
Switching output
Operating voltage input
BLOCK DIAGRAM
EN
200mV
V
CC
220mV
1.235V
CURRENT
SOURCE
BIAS
2.5V
REGULATOR
START
UP
REFERENCE
+
COMP.
_
Current
limit
_
150kHz
OSC.
COMP.
FB
+
R2
+
AMP
+
CONTROL
+
DRIVER
2A
SWITCH
_
COMP.
_
COMP.
R1
SW
Vss
Thermal
Shutdown
ADJ : R2=0Ω, R1=OPEN
5
Advanced Power
Electronics Corp.
APE1707
FUNCTION DESCRIPTION
PIN FUNCTION
VCC
This is the 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
SW
Circuit ground.
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
FEEDBACK
Senses the regulated output voltage to complete the feedback loop.
EN
Allows the switching regulator circuit to be shutdown using logic level signals
thus dropping the total input supply 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 SO-8 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 APE1707 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 APE1707 (SO-8 package)
operating as a buck-switching regulator in an ambient temperature of 25℃ (still air).
These temperature increments are all approximate and are affected by many factors.
Higher ambient temperatures require 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(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.
6
Advanced Power
Electronics Corp.
APE1707
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.
7
Advanced Power
Electronics Corp.
APE1707
TYPICAL PERFORMANCE CHARACTERISTICS
Output Ripple
Power on Test Wave
(VIN=12V, VOUT=3.3V, IOUT=2A)
(VIN=12V, VOUT=5V, IOUT=2A )
Load Transient Response
EN on Test Wave
(VIN=12V, VOUT=3.3V, IOUT=0.1~2A)
(VIN=12V, VOUT=5V, IOUT=2A )
Efficiency
(VIN=12V, VOUT=3.3V)
Vin=12V
Efficiency
(VIN=12V, VOUT=5.0V)
Vin=12V
90%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0.0
0.5
1.0
Iout(A)
1.5
2.0
0.0
0.5
1.0
Iout(A)
1.5
2.0
8
Advanced Power
Electronics Corp.
APE1707
MARKING INFORMATION
TO-252-5L
Part Number
Package Code
Output Voltage :
Blank : Adj
1707H-XX
;
50 : 5.0V
12 : 12V
33 : 3.3V
;
Logo
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
TO-263-5L
Part Number
Package Code
Output Voltage :
Blank : Adj
1707S - XX
;
50 : 5.0V
12 : 12V
33 : 3.3V
;
Logo
Date Code (YWWSSS)
YWWSSS
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
SO-8 / ESOP-8
Part Number
Package Code :
M : SO-8 ; MP : ESOP-8
Output Voltage :
1707X-&&
YWWSSS
Blank : Adj
33 : 3.3V
;
50 : 5.0V
12 : 12V
;
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
9
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A-POWER
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