APW1173 Просмотр технического описания (PDF) - Anpec Electronics
Номер в каталоге
Компоненты Описание
производитель
APW1173 Datasheet PDF : 21 Pages
| |||
APW1173
Pin Function Description
No.
PIN
Description
1
OUT Regulator Output.
2
SYNC Master/Slave synchonization.
3
INH
A logical signal (active high) disables the device. If INH not used the pin must be
connected to GND. When it is open an internal pull-up disable the device.
4
COMP E/A output for frequency compensation.
Feedback input. Connecting directly to this pin results in an output voltage of
5
FB
1.235V(APW1173). An external resistive divider is required for higher output
voltages.
6
VREF 3.3V reference voltage output, no Capacitor Is requested for stability.
7
GND Ground.
8
VCC Unregulated DC input voltage.
Thermal Characteristics
Symbol
Parameter
θJA Junction to ambient thermal resistance in free air
Value
45.7
Unit
°C/W
* The area of the thermal pad is 4.5mm X 2mm and the GND plane is 60mm X 60mm. Connect the thermal
pad and the GND plane by 8 vias. TA = 25°C.
Electrical Characteristics
The * denotes the specifications that apply over TA = -40 ~ 85oC. Typical values are at TA = 25oC.
VCC = 12V unless otherwise specified.
Symbol
Parameter
Test condition
VCC Operating input voltage range VO = 1.235V; IO = 2A
UVLO threshold voltage
VUVLO
Hysteresis
VCC rising
Vd Dropout voltage
VCC = 4.8V; IO = 2A
ILIM Maximum limiting current
VCC = 4.8V to 22V
fs Switching frequency
Main design
Duty cycle
APW1173
Unit
Min Typ Max
* 4.7
22
V
* 3.8
4.2
4.6
V
0.3
V
*
1.0
1.2
V
* 3.3
3.8
4.3
A
* 400 500 600
KHz
410 500 590
0
100 %
Copyright © ANPEC Electronics Corp.
3
Rev. A.5 - Aug., 2005
www.anpec.com.tw
Share Link: 