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PDF STR3A153 Data sheet ( Hoja de datos )
| Número de pieza | STR3A153 | |
| Descripción | PWM Off-Line Switching Regulator ICs | |
| Fabricantes | Sanken | |
| Logotipo |  |
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STR3A151, STR3A152, STR3A153,
STR3A154, STR3A155
PWM Off-Line Switching Regulator ICs
Features and Benefits
• Current mode PWM control
• Built-in Random Switching function: reduces
EMI noise, simplifies EMI filters, and cuts cost by
external part reduction
• Built-in Slope Compensation function: avoids
subharmonic oscillation
• Built-in Leading Edge Blanking (LEB) function
• Auto Standby function:
▫ Input power, PIN < 10 mW at no load with low power
consumption shunt regulator
▫ Normal load operation: PWM switching
▫ Light load operation: Standby mode (Burst oscillation)
Continued on the next page…
Package: DIP8
Not to scale
Description
STR3A100 series are power ICs for switching power supplies,
incorporating a power MOSFET and a current mode PWM
controller IC in one package.
Including a startup circuit and a standby function in the
controller, the product achieves low power consumption, low
standby power, and high cost-effectiveness in power supply
systems, while reducing external components.
The products are provided in an industry standard DIP8
package.
Applications
Switching power supplies for electronic devices such as:
• Stand-by power supply for LCD/PDP television,
desktop PC, multi-function printer, audio equipment,
and so forth
• Small switched-mode power supply (SMPS) for printer,
BD/DVD player, set-top box, and so forth
• Auxiliary power supply for air conditioner, refrigerator,
washer, dishwasher, and so forth
VAC
D1
C1
Typical Application
CRD Snubber Circuit
C9
T1
D4
C5 R3
D3
P
S
C6
C, RC
Damper
Snubber
Circuit
8 76 5
D/ST D/ST DN/SCT D/ST
C4 U1
STR3A100
S/OCP VCC GND FB/OLP
1234
D2 R2
C2 D
ROCP
C3
PC1
L2
R9
PC1 R4
R8
R5
C7 R6
U2
R7
VOUT
C8
GND
STR3A150-DS
SANKEN ELECTRIC CO., LTD.
July 20, 2012
1 page  
STR3A151, STR3A152, STR3A153,
STR3A154, STR3A155
PWM Off-Line Switching Regulator ICs
Electrical Characteristics of MOSFET Unless specifically noted, TA is 25°C
Characteristic
Symbol
Test Conditions
Pins
Min.
Typ.
Max.
Unit
Drain-to-Source Breakdown Voltage
Drain Leakage Current
VDSS
IDSS
STR3A151
8–1
650
–
–
V
8–1
–
– 300 μA
– – 4.0 Ω
STR3A152
– – 3.0 Ω
On-Resistance
RDS(ON)
STR3A153
STR3A154
8–1
–
–
– 1.9 Ω
– 1.4 Ω
STR3A155
– – 1.1 Ω
Switching Time
Thermal Resistance
tf
Rθch-C
STR3A151
STR3A152
STR3A153
STR3A154
STR3A155
The thermal
resistance
between channel
and case. Case
temperature (TC)
is measured at
the center of the
branded side.
8–1
–
–
–
–
–
– 250 ns
– 18 °C/W
– 17 °C/W
STR3A150-DS
SANKEN ELECTRIC CO., LTD.
5
July 20, 2012
5 Page 
STR3A151, STR3A152, STR3A153,
STR3A154, STR3A155
PWM Off-Line Switching Regulator ICs
Functional Block Diagram
VCC
2
Control Part
UVLO Reg VREG
OVP
Startup
TSD
D/ST
5, 6,
7, 8
PWM
Oscillator
SQ
R
FB/OLP
4
VCC
OCP
DRV
OLP
Slope
compensation
Drain Peak Current
compensation
Feedback
control
LEB
S/OCP
GND
1
3
Pin-out Diagram
S/GND 1
VCC 2
GND 3
FB/OLP 4
8 D/ST
7 D/ST
6 D/ST
5 D/ST
Pin List Table
Number Name
1 S/OCP
2 VCC
3 GND
4 FB/OLP
5, 6,7, 8
D/ST
Function
MOSFET source and input of Overcurrent Protection (OCP) signal
Power supply voltage input for Control Part and input of Overvoltage
Protection (OVP) signal
Ground
Feedback signal input for constant voltage control signal and input of
Overload Protection (OLP) signal
MOSFET drain pin and input of the startup current
STR3A150-DS
SANKEN ELECTRIC CO., LTD.
11
July 20, 2012
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet STR3A153.PDF ] | |
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