概述
数据手册AIC1595A-12CT 概述
2A STEP-DOWN PWM REGULATOR 2A降压PWM稳压器
AIC1595A-12CT 数据手册
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AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
DESCRIPTION
!
FEATURES
!
Operating Input Voltage From 4.5V to 36V
"
The AIC1595 series are step-down monolithic
PWM regulators delivering 2A at fixed voltages of
2.5V , 3.3V, 5.0V , 12V and using a external di-
vider to adjust output voltage from 1.25V to 30V
with excellent line and load regulation.
2.5V, 3.3V, 5V , 12V and Adjustable Output Ver-
sion
"
Adjustable Version Output Voltage Range , 1.25V
"
to 30V ± 4% max Over Line and Load Regulation
Available in TO220-5 and TO263-5 Package
Requires Only 4 External Components.
150KHz/300KHz Fixed Constant Frequency
Low Power Standby Mode, IQ Typically 80µA
TTL Shutdown Capability.
"
"
"
"
"
"
"
"
Switching frequency up to 150KHz/300KHz are
achievable thus allowing smaller sized filter com-
ponents. Internal current limit and thermal shut-
down circuits provide protection from overloads. It
also provides output overvoltage and short pro-
tection under fault conditions.
Output Overvoltage Protection
Current Limit and Thermal Shutdown Protection.
2A Guaranteed Output Current
The internal precious reference combined with
voltage feedback loop provides optimum output
voltage accuracy and fast load transient response.
APPLICATIONS
!
Simple High Efficiency Step-down regulator
"
Packages available are in standard TO220-5 for
standard assembly and TO263-5 for SMD.
On-Card Switching regulators
"
Fixed Voltage power supply for LCD Monitor
"
TYPICAL APPLICATION CIRCUIT
!
1
2
4
OUT
IN
V
+
L1
IN
+
V
C2
OUT
C1
D1
C3
AIC1595
ꢀ
FB
R1
SHDN
ꢁ
GND
R2
R1 short and R2 open for fixed
switching output version
2A Precision PWM DC/DC Regulator
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
1
AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
ORDERING INFORMATION
ꢀ ꢀ
!
AIC1595X- XXCX
PIN CONFIGURATION
ORDER NUMBER
PACKAGE TYPE
M: TO263-5
T: TO220-5
AIC1595A(B)CM
AIC1595A(B)-25CM
AIC1595A(B)-33CM
AIC1595A(B)-50CM
AIC1595A(B)-12CM
(TO263-5)
FRONT VIEW
1: IN
2. OUT
3. GND
4. FB
5. SHDN
1 2 3 4 5
OUTPUT VOLTAGE
DEFAULT: Adj.
25: 2.5V
33: 3.3V
50: 5.0V
12: 12.0V
FREQUENCY VERSION
A: 150KHZ
AIC1595A(B)CT
AIC1595A(B)-25CT
AIC1595A(B)-33CT
AIC1595A(B)-50CT
AIC1595A(B)-12CT
(TO220-5)
FRONT VIEW
1: IN
2. OUT
3. GND
4. FB
B: 300KHZ
1
2 3 4 5
5.ꢀSHDN
ABSOLUTE MAXIMUM RATINGS
!
!
Supply Voltage ……………..……………......……………..........……………….................36V
FB, SHDN Pin Input Voltage.……………......……………..........……………….................25V
Operating Temperature Range …….…………...............…….……………......... 0°C ~ 70°C
Storage Temperature Range ……...................……..…….…………………. –65°C ~ 150°C
TEST CIRCUIT
Refer to Typical Application Circuit.
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
2
AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
ELECTRICAL CHARACTERISTICS (T =25°C, V =18V)
!
J
IN
PARAMETER
TEST CONDITIONS
MIN.
TYP.
MAX. UNIT
Input Voltage
4.5
36
V
V
Fixed Output Voltage
AIC1595-25 (V > 4.5V)
2.5
3.3
IN
AIC1595-33 (V > 4.5V)
V
IN
AIC1595-50 (V > 7.0V )
5.0
V
IN
AIC1595-12 (V > 15V )
12.0
1.25
V
IN
Feedback Voltage
AIC1595 Adjustable
V
Output Voltage Regulation
Quiescent Current
4
5
%
mA
µA
V
Internal switch off
1
Shutdown Quiescent Current
Logic Input High
SHDN = 5V (OFF)
(Regulator OFF)
(Regulator ON )
AIC1595A series
AIC1595B series
80
2
Logic Input Low
0.8
V
Oscillator Frequency
Oscillator Frequency
Output Current Limit
Over Voltage Protection
Maximum Duty Cycle
Efficiency
150
300
KHz
A
2.0
120
90
%
100
%
Vo=5V , Io=2A
%
ANALOG INTEGRATIONS CORPORATION
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
3
AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
PIN DESCRIPTIONS
!
PIN 1: IN
Supply voltage input for the IC
PIN 4: FB
Feedback input for fixed-output or
adjustable-output version. Connect di-
rectly to output for fixed operation
version or to a resistor divider for ad-
justable operation versions.
switching regulator. A suitable input
bypass capacitor must be present at
this pin to minimize voltage transients
and to supply the switching currents
needed by the regulator.
PIN 5: SHDN Allows the switching regulator circuit
to be shutdown using logic level sig-
nals thus dropping the total input sup-
ply current to approximately 80µA.
Drive it high to disable the reference ,
control circuitry and internal switches.
Drive low or connect to GND for nor-
mal operation.
PIN 2:OUT
Internal switch. The voltage at this pin
switches between (V -V
) and ap-
IN SAT
proximately –0.5V, with a duty cycle of
approximately V
/
.
OUT VIN
PIN 3: GND Ground requires a short, low noise
connection to ensure good load
regulation.
ꢀBLOCK DIAGRAM
!
SHDN
IN
1.25 V
2.5V Regulator
ON / OFF
Reference
FB
Current
Limit
COMP.
AMP.
COMP.
Compensation
Circuit
Latch
Driver
OUT
GND
150/300
KHz OSC
Thermal
Shutdown
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
4
AIC1595
2A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1595-P1 03/23/00
PHYSICAL DIMENSIONS
!
"
TO-263-5L (unit: mm)
SYMBOL
MIN
4.07
1.45
0.36
1.14
8.63
9.78
0.71
15.11
2.28
-
MAX
4.83
1.96
0.64
1.40
9.66
10.54
1.02
15.59
2.80
1.40
A
B
E
A
L2
C
C2
D
L
D
E
E
L1
B
L
e
C
L1
L2
"
TO-220-5 (unit: mm)
A
SYMBOL
MIN
4.06
8.35
9.78
1.57
0.76
0.33
1.14
5.46
2.29
MAX
4.83
8.89
10.54
1.85
1.02
0.64
1.40
6.86
3.18
E
F
A
D
H1
D
E
e
e1
e2
F
L
H1
J1
e2
e
L
13.21
14.73
J1
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
5
AIC1595A-12CT 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| AIC1595A-25CM | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595A-25CT | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595A-33CM | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595A-33CT | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595A-50CM | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595A-50CT | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595B-12CM | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595B-12CT | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595B-25CM | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
|
| AIC1595B-25CT | AIC | 2A STEP-DOWN PWM REGULATOR | 获取价格 |
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