파트넘버.co.kr AX1509 데이터시트 PDF


AX1509 반도체 회로 부품 판매점

2A PWM Buck DC/DC Converter



Orister 로고
Orister
AX1509 데이터시트, 핀배열, 회로
www.DataSheet4U.com
AX1509
150KHz, 2A PWM Buck DC/DC Converter
Description
The AX1509 is Monolithic IC that design for a step-down DC/DC Converter, and own the
ability of driving a 2A load without additional transistor component. The output version
included 3.3V, 5V, 12V and an adjustable type. It 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. 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.
Features
3.3V, 5V, 12V and adjustable
Adjustable version output voltage range: 1.25-18V
• ±4% max over line and load conditions
150KHz ±15% fixed switching frequency
TTL shutdown capability
Operating voltage can be up to 22V
Output load current: 2A
SOP-8 and DIP-8 packages
Low power standby mode
Thermal-shuntdown and current-limit protection
High efficiency
Built-in switching a transistor on chip, requires only 4 external components
Applications
Simple High-efficiency step-down regulator
Positive to negative converter
On-card switching regulators
Pin Connections
87 65
12 34
Pin1: Operating Voltage Input
Pin2: Switch Output
Pin3: Output Voltage Feedback Control
Pin4: ON/OFF Shutdown
Pin5: Ground
Pin6: Ground
Pin7: Ground
Pin8: Ground
Page No. : 1/8
8-Lead Plastic DIP-8
Package Code: P
8-Lead Plastic SOP-8
Package Code: S
DS-AX1509-01 Aug, 2006
www.Orister.com


AX1509 데이터시트, 핀배열, 회로
Pin Connections
Current
Source
Bias
11.2253V5V
Reference
FB
+
R2
AMP
-
R1=2.5K
+
COMP
-
SD
2.5V
Regulator
Start
Up
++
200mV 220mV
-
COMP
+
150KHz
OSC.
+
COMP
Current
Limit
-
-
COMP
+
Driver
Thermal
Limit
Page No. : 2/8
VIN
R
3A
Switch
Output
GND
Absolute Maxium Rating (Note1)
Parameter
Supply Voltage
On/Off Pin Input Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Operating Temperature
Storage Temperature
Operating Voltage
Symbol
VCC
VSD
VFB
VOUT
PD
Topr
Tstg
VOP
Value
+24
-0.3~+18
-0.3~+18
-1
Internally Limited
-40~+125
-65~+150
+4.5~+22
Unit
V
V
V
V
W
oC
oC
V
Electrical Characteristics (Continued)
Specifications with boldface type apply over for full operating temperature range, the other type are for TJ=25oC(Note 2)
Part No.
Parameter
Symbol
Conditions
Min.
Typ. Max.
(Note3) (Note4)
AX1509-3.3
AX1509-5.0
AX1509-12
AX1509-ADJ
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
Output Voltage
Efficiency
VOUT
η
VOUT
η
VOUT
η
VOUT
η
4.75VVIN22V, 0.2AILOAD2A
VIN=12V, ILOAD=2A
7VVIN22V, 0.2AILOAD2A
VIN=12V, ILOAD=2A
15VVIN22V, 0.2AILOAD2A
VIN=25V, ILOAD=2A
4.5VVIN22V, 0.2AILOAD2A
VOUT programmed for 3V
VIN=12V, VOUT=3V, ILOAD=2A
3.168
3.135
3.3
3.342
3.465
- 73 -
4.800
4.750
5.0
5.200
5.250
- 80 -
11.52
11.40
12.0
12.48
12.60
- 90 -
1.213
1.200
1.25
1.287
1.300
- 73 -
Unit
V
%
V
%
V
%
V
%
DS-AX1509-01 Aug, 2006
www.Orister.com




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AX1509

2A PWM Buck DC/DC Converter - Orister