3521L-D16-T [UTC]
PWM CONTROLLER WITH SUPERVISORY CIRCUIT FOR SWITCHING POWER SUPPLY; PWM控制器监控电路用于开关电源
| 型号： | 3521L-D16-T |
| 厂家： | 
Unisonic Technologies |
| 描述： | PWM CONTROLLER WITH SUPERVISORY CIRCUIT FOR SWITCHING POWER SUPPLY |
| 文件： | 总5页 (文件大小：231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
3521
CMOS IC
PWM CONTROLLER WITH
SUPERVISORY CIRCUIT FOR
SWITCHING POWER SUPPLY
ꢀ
DESCRIPTION
UTC 3521 PWM controller is designed for switching mode power
supply for PCs etc. It provides all the functions similar to
combinations of industrial 494 plus UTC 3510 circuits.
DIP-16
ꢀ
FEATURES
* Over-voltage protection for 3.3V, 5V and 12V with delay
* Under-voltage detection for 3.3V, 5V and 12V with delay
* Remote ON/OFF function
*Pb-free plating product number: 3521L
* Power good circuitry for PCs.
ꢀ
ORDERING INFORMATION
Order Number
Package
DIP-16
Packing
Tube
Normal
Lead Free Plating
3521-D16-T
3521L-D16-T
3521L-D16-T
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) T: Tube
(2) D16: DIP-16
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 5
QW-R502-034,B
3521
CMOS IC
ꢀ
PIN CONFIGURATION
V33
V5
1
2
3
4
16
V
ADJ
OPNEGIN
OPOUT
15
14
13
12
11
10
9
V12
VCC
PT
GND
CT
UTC
3521
5
6
7
8
DET
PG
TPG
REM
C1
C2
ꢀ
PIN DESCRIPTION
PIN NO.
PIN NAME
V33
TYPE
FUNCTIONS
1
2
I
I
OVP/UVP INPUT FOR 3.3V
OVP/UVP INPUT FOR 5V
OVP/UVP INPUT FOR 12V
V5
3
V12
I
4
PT
I
ADDITIONAL OVP PROTECTION
GROUND
5
GND
CT
P
6
CAP FOR OSCIILATION FREQUENCY
OUTPUT 1
7
C1
O
O
I
8
C2
OUTPUT 2
9
REM
TPG
PG
REMOTE ON/OFF PIN.
10
11
12
13
14
15
16
POWER GOOD DELAY TIME SETTING
POWER GOOD SIGNAL OUT.
POWER GOOD SIGNAL DETECTION INPUT
SUPPLY VOLTAGE FOR IC
OP AMP OUTPUT
O
I
DET
VCC
P
O
I
OPOUT
OPNEGIN
VADJ
OP AMP NEGATIVE INPUT
VOLTAGE ADJUST PIN
I
UNISONIC TECHNOLOGIES CO., LTD
2 of 5
QW-R502-034,B
www.unisonic.com.tw
3521
CMOS IC
ꢀ
BLOCK DIAGRAM
-
UV
(1) V33
+
-
UV
(2)
(3)
V5
+
-
+
UVP
UV
V12
250ms delay
IN OUT
CLR
-
Q
R
S
OV
+
-
OVP
QN
OV
+
-
+
OV
-
+
OV
1.2 5V
-
+
(4)
PT
0.625
V
QOUT
ms
Delay
REMONF
36
(10)
(11)
TPG
PG
(9)
REM
4.5 ms
REMON
4k
Delay
-
+
(
12
) DET
0.625V
OSC
(6)
CLR
CT
PWM
C1
C2
(7)
(8)
CONTROL
PWMCMP
D
C
Q
ERROR AMP
+
-
(
)
-
+
16
V
ADJ
QN
(15)
OPNEGIN
2.45V
0. 4V
+
(1 4)
-
OPOUT
DETCMP
DEAD TIME CONTROLER
UNISONIC TECHNOLOGIES CO., LTD
3 of 5
QW-R502-034,B
www.unisonic.com.tw
3521
CMOS IC
ꢀ
ABSOLUTE MAXIMUM RATINGS (VCC=5.5V, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
V
Supply Voltage
VCC
5.5
Drain Output Voltage
Drain Output Current
Power Dissipation
VCC1, VCC
2
5.5
V
ICC1, ICC
2
200
mA
mW
℃
PD
200
Operating Temperature
Storage Temperature
TOPR
TSTG
-10 ~ +70
-65 ~ +150
℃
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ꢀ
ELECTRICAL CHARACTERISTICS (Ta=25℃, VCC =5V, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
DEAD TIME CONTROL SECTION
ZERO DUTY CYCLE
3.0
0.1
3.3
Input Threshold Voltage
VI(THR)
V
MAX. DUTY CYCLE
ERROR AMP SECTION
Opneg Bias Voltage
Close Loop Voltage Gain
Cross Over Point
OPNEG OPEN
0.5V ~ 3.5V
0dB
2.38 2.45 2.52
V
GVC
65
dB
320
KHz
OUTPUT SECTION
Output Saturation Voltage
Drain Off-State Current
Rising Time
VDSSAT ID=200mA
ID(OFF) VCC=VD=VS=0V
tR
1.1
2
1.3
10
V
µA
ns
ns
100
50
200
200
Falling Time
tF
PROTECTION SECTION
V33
V5
3.8
5.8
4.1
6.2
4.3
6.6
Over Voltage Protection (OVP)
Under Voltage Protection (UVP)
V
V
V12
PT
4.41 4.64 4.90
1.2 1.25 1.3
V33
V5
1.78 1.98 2.18
2.70 3.00 3.30
2.11 2.37 2.63
0.55 0.62 0.68
V12
PT
UVP Disable Voltage
V
tDLY
UVP Delay Time
100
250
500
ms
REMOTE ON/OFF SECTION
REM High Input Voltage
REM Low Input Voltage
REM Pull High Voltage
REM Delay Time
VIH
VIL
2.0
V
V
0.8
5.25
42
VH(PULL)
tDLY
2.0
30
V
36
ms
ms
tDLY (OFF)
REM Off Delay Time
3.5
4.5
5.5
POWER GOOD SECTION
Detecting Input Voltage
Output Saturation Voltage
Charging Current For TPG
PG Output Pull-up Resistor
PG Output Load Resistor
PG Delay Time
VI(DET)
0.55 0.62 0.68
V
VO(SAT) IPG=10mA
ICHAR
0.2
30
4
0.4
V
µA
KΩ
KΩ
ms
RO(PULL-UP))
RO(LOAD)
tDLY
0.5
1
2
C=2.2µF
100
250
500
TOTAL DEVICE
Standby Supply Current
OSCILLATION SECTION
Oscillation Frequency
Frequency Change With TEMP.
ICC
10
2
20
60
mA
Fosc
CT=2200P
50
KHz
%
Fosc/T CT=2200P
UNISONIC TECHNOLOGIES CO., LTD
4 of 5
QW-R502-034,B
www.unisonic.com.tw
3521
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
5 of 5
QW-R502-034,B
www.unisonic.com.tw
相关型号：
©2020 ICPDF网 联系我们和版权申明