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PDF CXA3822M Data sheet ( Hoja de datos )
| Número de pieza | CXA3822M | |
| Descripción | AC-DC Power Supply Secondary Controller IC | |
| Fabricantes | Sony | |
| Logotipo |  |
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AC-DC Power Supply Secondary Controller IC
CXA3822M
Description
The CXA3822M is a secondary controller IC used for AC-DC power supply series resonance converter.
(Applications: Power supply circuits)
Features
< 5V, 12V control block >
5V/12V voltage control circuit
OTP (Detection of abnormal temperature) function
LVP/OVP (Detection of abnormal voltage)
Mode transition timer function
< Common >
16-pin SOP package
TSD protection function
UVLO function
Structure
CMOS silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license
by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating
the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
-1-
E09X14
Free Datasheet http://www.datasheet4u.com/
1 page  
CXA3822M
Pin Table
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin name
VDD5
TEMP
AMPO12
AMPIN12
GND12
VIN12
TEST
LATCH5
MAINON
xACDET
ACIN_DET
xACDC_STBY
AMPIN5
AMPO5
GND5
VIN5
IN/OUT
—
IN
OUT
IN
—
—
—
OUT
OUT
IN
OUT
IN
IN
OUT
—
—
Function
VDD power supply output
Temperature monitor input for overheat protection
12V control output
12V control input
12V control GND, Internal reference GND, Logic GND
12V input
NC
Signal for latch stop of 5V output
Power supply main 12V output ON/OFF signal
AC/+B detection signal from power supply upstream
AC detection signal
ON/standby switching signal for power supply (12V)
5V control input
5V control output
GND for 5V control
5V input
Input logic
Input signal
xACDC_STBY
xACDET
L
Standby mode
(12V = OFF)
No upstream AC
H
Operating mode
(12V = ON)
Upstream AC
Output logic
Output signal
MAINON
ACIN_DET
LATCH5
L
Main output ON
Abnormal (No AC)
Abnormal (5V off latch)
H
Main output OFF
Normal (AC)
Normal
-5-
Free Datasheet http://www.datasheet4u.com/
5 Page 
CXA3822M
2. 5V and 12V Control Abnormality Detection
Fig.2 shows the equivalent circuits for the 5V and 12V control voltage abnormality detection block.
When an abnormal 5V and 12V control REG voltage occurs during operation, the device detects the
abnormality and transitions to the “latch stop” state. (For the states following abnormality detection, see the
state transition diagram on page 19.)
The abnormality detection voltages are as follows.
5V control abnormality detection------- LVP: 4V or lower
OVP: 6V or higher
12V control abnormality detection------ LVP: 8V or lower
OVP: 14.5V or higher
5VSB
VIN5
24
5V and 12V control voltage abnormality detection block
5V_NG detection circuit
VIN5 LVP
(4V detection)
LVP
VIN5 OVP
(6V detection)
OVP
VIN12
VIN12
6
12V_NG detection circuit
VIN12 LVP
(8V detection)
LVP
VIN12 OVP
(14.5V detection)
OVP
Control logic
Fig.2. 5V and 12V Control Abnormality Detection Equivalent Circuit
- 11 -
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet CXA3822M.PDF ] | |
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