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AC1501 PDF даташит

Спецификация AC1501 изготовлена ​​​​«ETC» и имеет функцию, называемую «PWM Buck DC/DC Converter».

Детали детали

Номер произв AC1501
Описание PWM Buck DC/DC Converter
Производители ETC
логотип ETC логотип 

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AC1501 Даташит, Описание, Даташиты
150Khz, 3A PWM Buck DC/DC Converter
AP1501
„ Features
- Output voltage: 3.3V, 5V, 12V and adjustable
output version
- Adjustable version output voltage range, 1.23V to
37V+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 40V
- Output load current: 3A
- TO220-5L TO220-5L(R) and TO263-5L packages
- Low power standby mode
- Built-in switching transistor on chip
„ Applications
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
„ General Description
The AP1501 series are monolithic IC that design for
a step-down DC/DC converter, and own the ability
of driving a 3A 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. The AP1501
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 5-lead TO-220 package and a 5-lead
TO-263.
„ Pin Assignments
„ Pin Descriptions
( Top View )
Name
Description
5 SD
VIN Operating voltage input
ww Metal Tab GND
w TO263-5L
.D ( Top View )
ataSheTO220-5L
4 FB
3 Gnd
2 Output
1 VIN
5 SD
4 FB
3 Gnd
2 Output
1 VIN
Output
Gnd
FB
SD
Switching output
Ground
Output voltage feedback control
ON/OFF shutdown
et4UThis 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.
.c Rev.1.2 Aug. 23, 2005
om 1/12









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AC1501 Даташит, Описание, Даташиты
150Khz, 3A PWM Buck DC/DC Converter
AP1501
„ Ordering Information
AP1501 XX X X X
Output version
Blank : Adjustable
-33 : 3.3V
-50 : 5.0V
-12 : 12V
Package
T5: TO220-5L
T5R: TO220-5L(R)
K5: TO263-5L
Lead Free
Blank : Normal
L : Lead Free Package
Packing
Blank : Tube
A : Taping
„ Block Diagram
SD
Current
Source
bias
1.235V
Reference
2.5V
Regulator
Start
up
200mV
220mV
+
Com_p
VIN
Comp
+
+ Frequecy
FB
_Amp
compen-
sation
Comp
+
Pre-driver
3A
Switch
150kHz
OSC.
Thermal
Shutdown
Output
Gnd
Anachip Corp.
www.anachip.com.tw
Rev.1.2 Aug. 23, 2005
2/12









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AC1501 Даташит, Описание, Даташиты
150Khz, 3A PWM Buck DC/DC Converter
AP1501
„ Absolute Maximum Ratings
Symbol
VCC
VSD
VFB
VOUT
PD
TST
TOP
VOP
Parameter
Supply Voltage
ON/OFF Pin input Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Storage Temperature
Operating Temperature
Operating Voltage
Rating
+45
-0.3 to +40
-0.3 to +40
-1
Internally limited
-65 to +150
-40 to +125
+4.5 to +40
Unit
V
V
V
V
W
oC
oC
V
„ Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, VIN=12V for 3.3V, 5V, adjustable version and VIN=24V for the 12V version. ILOAD = 0.5A
Symbol
Parameter
Conditions
Min. Typ. Max.
IFB
Feedback Bias Current
VFB=1.3V
(Adjustable version only)
40
60
100
FOSC Oscillator Frequency
127 150 173
110 173
VSAT
DC
ICL
IL
IQ
ISTBY
VIL
VIH
Saturation Voltage
Max. Duty Cycle(ON)
Min. Duty cycle(OFF)
Current Limit
Output = 0
Output
Leakage
Output = -1 Current
Quiescent Current
Standby Quiescent
Current
ON/OFF pin Logic Input
Threshold Voltage
IOUT=3A
no outside circuit
VFB=0V force driver on
VFB=0V force driver on
VFB=12V force driver off
peak current
no outside circuit
VFB=0V force driver on
no outside circuit
VFB=12V force driver off
VIN=40V
VFB=12V force driver off
ON/OFF pin=5V
VIN=40V
Low (regulator ON)
High (regulator OFF)
1.4
1.3 1.5
100
0
5.5
3.6 4.0 6.5
200
2 60
5 10
150
250
300
0.6
2.0 1.3
IH
ON/OFF Pin Logic
Input Current
IL
ON/OFF Pin Input
Current
θJC Thermal Resistance
Thermal Resistance
θJA with Copper area of
Approximately 3 in2
VLOGIC=2.5V (OFF)
VLOGIC=0.5V (ON)
TO220-5L Junction to
TO263-5L Case
TO220-5L Junction to
TO263-5L Ambient
15
0.02
2.5
3.5
28
23
25
5
Unit
nA
Khz
V
%
A
uA
mA
mA
uA
V
uA
oC/W
oC/W
Anachip Corp.
www.anachip.com.tw
Rev.1.2 Aug. 23, 2005
3/12










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