|
|
PDF APW8723 Data sheet ( Hoja de datos )
| Número de pieza | APW8723 | |
| Descripción | 5V to 12V Single Buck Voltage Mode PWM Controller | |
| Fabricantes | ANPEC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de APW8723 (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
|
No Preview Available !
APW8723
5V to 12V Single Buck Voltage Mode PWM Controller
Features
General Description
• Wide 5V to 12V Supply Voltage
The APW8723 is a voltage mode, fixed 300kHz switching
• Power-On-Reset Monitoring on VCC
frequency, synchronous buck converter. The APW8723
• Excellent Output Voltage Regulations
allows wide input voltage that is either a single 5V~12V
- 0.8V Internal Reference
or two supply voltage(s) for various applications. The
- ±1% Over Temperature Range
power-on-reset (POR) circuit monitors the VCC supply
• Integrated Soft-Start
voltage to prevent wrong logic controls. A built-in soft-start
•
circuit prevents the output voltages from overshoot as
Voltage Mode PWM Operation with External
well as limits the input current. An internal 0.8V tempera-
Compensation
ture-compensated reference voltage with high accuracy
• Up to 90% Duty Ratio for Fast Transient Response is designed to meet the requirement of low output volt-
• Constant Switching Frequency
age applications. The APW8723 provides excellent out-
- 300kHz ±10%
put voltage regulations against load current variation.
• Integrated Bootstrap Forward P-CH MOSFET
APW8723 is built in reference voltage offset function for
• Drive Dual Low Cost N-MOSFETs with Adaptive applications that require adjusting supply voltage.
Dead Time Control
• 50% Under-Voltage Protection
• 125% Over-Voltage Protection
• Adjustable Over-Current Protection Threshold
- Using the R of Low-Side MOSFET
DS(ON)
• Shutdown Control by COMP
• Power Good Monitoring
• TDFN3x3-10 Package
The controller’s over-current protection monitors the out-
put current by using the voltage drop across the RDS(ON) of
low-side MOSFET, eliminating the need for a current sens-
ing resistor that features high efficiency and low cost. In
addition, the APW8723 also integrates excellent protec-
tion functions, The over-voltage protection (OVP) , under-
voltage protection (UVP) and over-temperature protec-
tion (OTP). OVP circuit which monitors the FB voltage to
prevent the PWM output from over voltage, and UVP cir-
• Lead Free and Green Devices Available
cuit which monitors the FB voltage to prevent the PWM
(RoHS Compliant)
output from under voltage or short circuit. OTP circuit which
monitors the junction temperature to prevent over-heat-
ing conditions.
The APW8723 is available in TDFN3x3-10 package.
Applications
• Graphic Cards
• DSL, Switch HUB
• Wireless Lan
• Notebook Computer
• Mother Board
• LCD Monitor/TV
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Apr., 2013
1
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
1 page  
APW8723
Electrical Characteristics (Cont.)
Refer to the typical application circuit. These specifications apply over VVCC = 12V, TA = -40°C to 85°C, unless otherwise noted. Typical
values are at TA = 25°C.
Symbol
Parameter
Test Conditions
PROTECTIONS (cont.)
IOCSET
OCSET Current Source
Over-Temperature Protection
Threshold
Hysteresis
SOFT-START
TSS Internal Soft-Start Interval (Note 4)
COMP VOLTAGE
VOUT from 0% to 90% Regulation
VDISABLE Shutdown Threshold of VCOMP
OFS FUNCTION
REFOUT current limiting
Only sourcing
OFS setting range
POWER GOOD (Only for TDFN3 3-10 Package)
IPOK POK Leakage Current
VPOK POK Threshold
VPOK=5V
VFB is from low to target value
(POK Goes High)
VFB Falling, POK Goes Low
VFB Rising, POK Goes Low
POK Delay Time
Vref=90% regulation to POK goes
high
Note 4: Guaranteed by design, not production tested.
APW8723
Min. Typ. Max.
9 10 11
- 140 -
- 40 -
-2-
- - 0.4
-2
0.4 -
-
3
- 0.1
85 90
45 50
120 125
- 1.5
1
95
55
130
-
Unit
µA
oC
oC
ms
V
mA
V
µA
%
%
%
ms
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Apr., 2013
5
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
5 Page 
APW8723
Block Diagram
Regulator
I OCSET
(10 µA typical)
Sample
and Hold
VREF
(0.8V typical )
0.5
To
LGATE
VROCSET
UVP
Comparator
OVP
Comparator
1. 25
Soft-start
Error Amplifier
OFS FB
0 .4V
COMP
Power-On Reset
UVLO
VCC
Sense Low Side
Soft Start
and
Fault Logic
Inhibit
VROCSET
Gate
Control
IZCMP
VCC
BOOT
UGATE
PHASE
LGATE
PWM
Comparator
Oscillator
Disable
VREF
(0. 8V typical )
REFOUT
GND
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Apr., 2013
11
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet APW8723.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| APW8720B | Single Buck Voltage Mode PWM Controller | ANPEC |
| APW8722 | (APW8722/A/B/C/D) 5V to 12V Single Buck Voltage Mode PWM Controller | ANPEC |
| APW8722A | (APW8722/A/B/C/D) 5V to 12V Single Buck Voltage Mode PWM Controller | ANPEC |
| APW8722B | (APW8722/A/B/C/D) 5V to 12V Single Buck Voltage Mode PWM Controller | ANPEC |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |