APE1722G5 [A-POWER]
IC SWITCHING REGULATOR, 260 kHz SWITCHING FREQ-MAX, PDSO5, LEAD FREE, SOT-89, 5 PIN, Switching Regulator or Controller;
| 型号： | APE1722G5 |
| 厂家： | 
ADVANCED POWER ELECTRONICS CORP. |
| 描述： | IC SWITCHING REGULATOR, 260 kHz SWITCHING FREQ-MAX, PDSO5, LEAD FREE, SOT-89, 5 PIN, Switching Regulator or Controller 开关 光电二极管 |
| 文件： | 总7页 (文件大小：270K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Advanced Power
Electronics Corp.
APE1722
200KHz, 1.5A PWM BUCK DC/DC CONVERTER
FEATURES
DESCRIPTION
The APE1722 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of driving a
1.5A 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
Output Voltage : Adjustable Output Version.
Adjustable Version Output Voltage Range : 0.75V
to 22V+3%.
200KHz 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 24V.
Output Load Current: 1.5A.
frequency will be reduced. The APE1722 series operates at
a switching frequency of 200KHz thus allow smaller sized
filter components than what would be needed with lower
frequency switching regulators. Other features include a
guaranteed +3% tolerance on output voltage under specified
input voltage and output load conditions, The chips are
available in a standard SOT-89-5L package.
Low Power Standby Mode.
Built-in Switching Transistor on Chip.
SOT-89-5L Pb-Free packages.
TYPICAL APPLICATION
Vout=5V/1.5A
L1
VIN=12V
U1
APE1722
33uH
R1
6.8K
1
5
Vcc SW
R3
100k
D1
B240A
C1
220uF
C2
0.1uF
C3
330uF
C6
0.1uF
R2
1.2K
4
3
FB
2 Vss
EN
ON/OFF
C4
0.1uF
VOUT = VFB x (1+R1/R2) , VFB= 0.75V, R2 = 0.75K ~4 K
Table 1 Resistor select for output voltage setting
VOUT
R2
R1
5V
1.2K
2K
2K
2K
2K
2K
2K
6.8K
6.8K
4.7K
3K
3.3V
2.5V
1.8V
1.5V
1.3V
1.2V
2K
1.5K
1.2K
L1 recommend value (VIN=12V, IOUT=1.5A)
VOUT
L1 Value
1.8V
2.5V
3.3V
5V
22uH
22uH
33uH
33uH
Data and specifications subject to change without notice
1
200811111
Advanced Power
Electronics Corp.
APE1722
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
V
CC PIN Voltage(VCC) ------------------------------------- +26V
Feedback PIN Voltage(VFB) ----------------------------- -0.3V to 12V
ON/OFF PIN Voltage(VEN) ------------------------------- -0.3V to VCC
Switch PIN Voltage(VOUT) -------------------------------- -0.8V
Power Dissipation(PD) ------------------------------------- (TJ-TA)/RthJA
W
Storage Temperature Range(TST) --------------------- -65°C To 150°C
Operating Temperature Range(TOP) ------------------ -20°C To 125°C
Operating Supply Voltage(VOP) ------------------------- +4.5V to 24V
Thermal Resistance from Junction to Case(RthJC
)
15°C/W
50°C/W
Thermal Resistance from Junction to Ambient(RthJA)
Note. Rth JA is measured with the PCB copper area(need connect to V SS pins) of approx. 1.5 in 2 (multi-layers)
ORDERING/PACKAGE INFORMATION
(Top View)
VCC
5
EN
4
APE1722X
APE1722
Package Type
G5 : SOT-89-5L
1
2
3
SW
VSS
FB
SOT-89-5L
ELECTRICAL SPECIFICATIONS
(VCC=12V, VOUT=3.3V, IOUT=0.2A, TA=25°C, unless otherwise specified)
UNITS
V
Parameter
SYM
VFB
IQ
TEST CONDITION
IOUT=0.2A
MIN
TYP MAX
Feedback Voltage
Quiescent Current
Feedback Bias Current
Shutdown Supply Current
0.728 0.75 0.773
VFB=1.2V force driver off
IOUT=0.1A
-
4
-10
2
8
mA
nA
IFB
-
-
-50
10
ISD
VEN =0V
uA
Oscillator Frequency
FOSC
140
200
260
KHz
Oscillator Frequency of Short
Circuit Protect
FSCP
(Adjustable) When VFB<0.5V
-
80
-
KHz
%
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
V
FB=1.2V force driver off
-
-
0
-
-
DC
VFB=0V force driver on
100
Pear current, No outside circuit
V FB=0V force driver on
ICL
Current Limit
1.8
-
-
-
A
V
IOUT=1.5A, No outside circuit
VFB=0V force driver on
VSAT
Saturation Voltage
1.2
1.5
No outside circuit
SW Pin=0V
-
-
-
-200
-
uA
SW Pin
Leakage
Current
ISWL
V
FB=1.0V force driver off
SW Pin=-0.8V
VCC=24V force driver off
-5
mA
2
Advanced Power
Electronics Corp.
APE1722
ELECTRICAL SPECIFICATIONS(Cont.)
UNITS
Parameter
SYM
VIH
VIL
TEST CONDITION
High (regulator ON)
MIN
TYP MAX
-
2
EN pin logic input threshold voltage
1.2
V
Low (regulator OFF)
VEN=2.5V (ON)
0.5
-
-
20
-5
-
-
EN pin logic input current
EN pin input current
IH
uA
°C
-
-
IL
VEN=0.3V (OFF)
Thermal shutdown Temp
TSD
135
-
PIN DESCRIPTIONS
PIN SYMBOL
VSS
PIN DESCRIPTION
GND Pin
FB
Feedback Pin
Power -Off Pin
H : Normal Operation(Step-down)
L : Step-down Operation Stopped
(All circuits deactivated)
Switch Pin. Connect External Inductor & Diode here.
IC Power Supply Pin
EN
SW
VCC
BLOCK DIAGRAM
EN
200mV
V
CC
220mV
0.75V
CURRENT
SOURCE
BIAS
2.5V
REGULATOR
START
UP
REFERENCE
+
COMP.
_
Current
limit
_
200KHz
OSC.
COMP.
+
+
AMP
+
CONTROL
+
DRIVER
_
COMP.
_
FB
COMP.
SW
Vss
Thermal
Shutdown
3
Advanced Power
Electronics Corp.
APE1722
FUNCTION PIN DESCRIPTION
Pin Functions
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
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 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 10uA. Pulling this pin below a
threshold voltage of approximately 0.5V shuts the regulator down, and pulling this pin
above 2.0V (up to a maximum of Vcc) turns the regulator on.
Thermal Considerations
The SOT-89-5L 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 APE1722 junction temperature rises above ambient
temperature for a 1.5A load and different input and output voltages.
For the best thermal performance, wide copper traces and generous amounts of PCB
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.) 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.
4
Advanced Power
Electronics Corp.
APE1722
TYPICAL CHARACTERISTICS
VFB VS VIN
ICCQ VS VIN
VFB VS VIN
0.77
Iccq VS VIN
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.76
0.75
0.74
0.73
0.72
0.71
4
6
8 10 12 14 16 18 20 22 24 26
Vin(V)
4
6
8
10 12 14 16 18 20 22 24 26
Vin(V)
FOSC VS VIN
FOSC VS TEMPERATURE
Fosc VS VIN
FOSC VS TEMP
240
230
220
210
200
190
180
240
230
220
210
200
190
180
170
160
150
140
-20
0
20
40
60
80 100 120
4
6
8
10 12 14 16 18 20 22 24 26
Vin(V)
temp (
)
℃
VFB VS TEMPERATURE
ICCQ VS TEMPERATURE
VFB VS TEMP
ICCQ VS TEMP
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.763
0.760
0.757
0.754
0.751
0.748
0.745
-20
0
20 40 60 80 100 120
temp (
-20
0
20 40 60 80 100 120
temp (
)
℃
)
℃
5
Advanced Power
Electronics Corp.
APE1722
TYPICAL CHARACTERISTICS
Output Ripple
Power on test wave
(VIN=12V, VOUT=3.3V, IOUT=1.5A)
(VIN=12V, VOUT=3.3V, IOUT=1.5A)
VOUT
VOUT(AC)
V
IN
V
IN
SW
SW
ISW
ISW
Load Transient Response
EN PIN on test wave
(VIN=12V, VOUT=3.3V, IOUT=0.1~1.5A)
(VIN=12V, VOUT=3.3V, IOUT=1.5A)
VOUT
VOUT(AC)
V
IN
V
IN
SW
SW
ISW
ISW
Efficiency
Efficiency
(VIN=12V)
(VIN=12V, VOUT=5V)
Vin=12V
Vin=12V
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
Vout=5V
Vout=3.3V
Vout=2.5V
Vout=1.8V
Vout=1.2V
0.0
0.5
1.0
1.5
0.0
0.5
1.0
1.5
Iout(A)
Iout(A)
6
ADVANCED POWER ELECTRONICS CORP.
Package Outline & Packing : SOT-89-5L
Millimeters
SYMBOLS
MIN
1.40
0.50
0.35
4.40
1.50
1.30
2.40
NOM
MAX
A
B
1.50
1.60
0.52
0.41
4.60
1.70
1.50
2.60
0.51
c
0.38
D
4.50
D1
D2
E
1.60
1.40
2.50
E1
E2
e
2.2 REF
0.52 REF
1.50 REF
3.00 REF
5° REF
4.15
e1
F
H
L
4.05
0.8
4.25
__
1.All Dimensions Are in Millimeters.
2.Dimension Does Not Include Mold Protrusions.
Part Marking Information : SOT-89-5L
Part Number
1722
YWWS
Date Code (YWWS)
Y:Year
WW：Week
S：Sequence
7
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