Power Switch. CX7501 Datasheet

CX7501 Switch. Datasheet pdf. Equivalent

CX7501 Datasheet
Recommendation CX7501 Datasheet
Part CX7501
Description Quasi-Resonant PSR CC/CV PWM Power Switch
Feature CX7501; CX7501 Quasi-Resonant PSR CC/CV PWM Power Switch FEATURES  Low Cost Solution Built-in 800V power B.
Manufacture CXW
Datasheet
Download CX7501 Datasheet




CXW CX7501
CX7501
Quasi-Resonant PSR CC/CV PWM Power Switch
FEATURES
Low Cost Solution Built-in 800V power BJT
Quasi-Resonant Primary Side Regulation
(QR-PSR) Control with High Efficiency
Multi-Mode PSR Control
Fast Dynamic Response
Built-in Dynamic Base Drive
Audio Noise Free Operation
±4% CC and CV Regulation
Low Standby Power <70mW
Programmable Cable Drop Compensation
(CDC) in CV Mode
Built-in AC Line & Load CC Compensation
Build in Protections:
Short Load Protection (SLP)
Cycle-by-Cycle Current Limiting
Leading Edge Blanking (LEB)
Pin Floating Protection
VDD OVP & UVP & Clamp
Over temperature protection(OTP)
Available with CX7501 Versions in SOP-7
Package
APPLICATIONS
Battery Chargers for Cellular Phones
AC/DC Power Adapter and LED Lightings
GENERAL DESCRIPTION
CX7501 is a high performance Quasi Resonant
(QR) Primary Side Regulation (PSR) PWM power
switch with high precision CV/CC control ideal for
charger applications.
In CV mode, CX7501 adopts Multi Mode QR
Control which uses the hybrid of AM (Amplitude
Modulation) mode and (Frequency Modulation)
FM mode to improve system efficiency and
reliability. In CC mode, the IC uses PFM control
with line and load CC compensation. The IC can
achieve fast dynamic response. The built-in Cable
Drop Compensation (CDC) function can provide
excellent CV performance.
CX7501 integrates functions and protections of
Under Voltage Lockout (UVLO), VDD over Voltage
Protection (VDD OVP), Cycle-by-cycle Current
Limiting (OCP), Short Load Protection (SLP), On-
Chip Thermal Shutdown, VDD Clamping, etc.
TYPICAL APPLICATION CIRCUIT
SHENZHEN CHENGXINGWEI TECHNOLOGY CO.LTD
CX7501
1



CXW CX7501
Pin Configuration
CX7501
Quasi-Resonant PSR CC/CV PWM Power Switch
Pin Description
Pin
Number
Pin
Name
1 FB
2 CS
3 VDD
4E
5,6 HV
7 GND
Block Diagram
I/O Description
System feedback pin which regulates both the output voltage in CV
I mode and output current in CC mode based on the flyback voltage of
the auxiliary winding.
I Current Sense Input Pin.
P Power Supply Pin of the Chip.
O The Power BJT Emitter
O The Power BJT Collector
P The Ground of the IC
SHENZHEN CHENGXINGWEI TECHNOLOGY CO.LTD
2



CXW CX7501
CX7501
Quasi-Resonant PSR CC/CV PWM Power Switch
Absolute Maximum Ratings (Note 1)
Parameter
HV PIN Maximum Voltage
HV PIN DC Current @CX7501
VDD DC Supply Voltage
VDD DC Clamp Current
CS, BASE voltage range
FB voltage range
RJA (/W) (SOP7)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10sec.)
ESD Capability, HBM (Human Body Model)
ESD Capability, MM (Machine Model)
Value
800
1300
30
10
-0.3 to 7
-0.7 to 7
90
150
-40 to 85
-65 to 150
260
3
250
Unit
V
mA
V
mA
V
V
oC/W
oC
oC
oC
oC
kV
V
Recommended Operation Conditions (Note 2)
Parameter
Supply Voltage, VDD
Operating Ambient Temperature
Maximum Switching Frequency @ Full Loading
Minimum Switching Frequency @ Full Loading
Value
7 to 24
-40 to 85
70
35
Unit
V
oC
kHz
kHz
ELECTRICAL CHARACTERISTICS (TA = 25OC, VDD=20V, if not otherwise noted)
Symbol Parameter
Test Conditions
Min Typ. Max
Supply Voltage Section(VDD Pin)
IVDD_st
Start-up current into VDD pin
3 20
IVDD_Op
Operation Current
0.8 1.5
IVDD_standby
VDD_ON
VDD_OFF
VDD_OVP
Standby Current
VDD Under Voltage Lockout
Exit
VDD Under Voltage Lockout
Enter
VDD OVP Threshold
10.5
5.5
24
0.5
12
6.5
26.5
1
13.5
7
29
VDD_Clamp VDD Zener Clamp Voltage
I(VDD ) = 7 mA
26 28 30
Control Function Section (FB Pin)
Unit
uA
mA
mA
V
V
V
V
SHENZHEN CHENGXINGWEI TECHNOLOGY CO.LTD
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