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EM5303A PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EM5303A
기능 5V 12V Synchronous Buck PWM Controller
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EM5303A 데이터시트, 핀배열, 회로
CYStech Electronics Corp.
5V/12V Synchronous Buck PWM Controller
EM5303/A
Spec. No. : C551QP
Issued Date : 2010.10.25
Revised Date :
Page No. : 1/12
General Description
EM5303/A is a synchronous rectified PWM controller operating with 5V or 12V supply voltage. This
device operates at 200/300 kHz and provides an optimal level of integration to reduce size and cost of the
power supply.
This part includes internal soft start, internal compensation networks, over current protection, under
voltage protection, and shutdown function. This part is available in PSOP-8 package.
Features
z Operate from 5V to 12V Voltage Supply
z 0.6V VREF with 1.5% Accuracy
z Voltage Mode PWM Control
z 200kHz or 300kHz Fixed Frequency Oscillator
z 0% to 80% Duty Cycle
z Internal Soft Start
z Over Current Protection
z Integrated Bootstrap Diode
z Adaptive Non-Overlapping Gate Driver
z Under Voltage Protection
z Over Voltage Protection
Applications
z Notebook & Netbook
z Graphic Cards & MB
z Low Voltage Logic Supplies
Ordering Information
Part Number
EM5303QP
EM5303AQP
Package
PSOP-8
PSOP-8
Frequency
200kHz
300kHz
EM5303QP
CYStek Product Specification
http://www.Datasheet4U.com




EM5303A pdf, 반도체, 판매, 대치품
CYStech Electronics Corp.
Spec. No. : C551QP
Issued Date : 2010.10.25
Revised Date :
Page No. : 4/12
Absolute Maximum Ratings (Note 1)
z Supply voltage, VCC--------------------------------------------------------- -0.3V to 16V
z PHASE to GND
DC------------------------------------------------------------------------------- -5V to 16V
<200nS------------------------------------------------------------------------- -10V to 32V
z BOOT to PHASE------------------------------------------------------------------------ 16V
z BOOT to GND
DC--------------------------------------------------------------------- -0.3V to PHASE+16V
<200nS------------------------------------------------------------------------- -0.3V to 42V
z UGATE------------------------------------------------------- PHASE – 0.3V to BOOT + 0.3V
z LGATE----------------------------------------------------------------- -0.3V to VCC + 0.3V
z EN & FB-------------------------------------------------------------------------- -0.3V to 6V
z Power Dissipation, PD @ TA = 25°C, PSOP-8 -------------------------------------- 0.625W
z Package Thermal Resistance, ΘJA, PSOP-8 (Note 2)-------------------------- 160°C/W
z Junction Temperature--------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.)-------------------------------------------- 260°C
z Storage Temperature Range----------------------------------------------- 65°C to 150°C
z ESD susceptibility (Note3)
HBM (Human Body Mode)------------------------------------------------------------ 2KV
MM (Machine Mode)----------------------------------------------------------------- 200V
Recommended Operating Conditions (Note5)
z Supply Voltage, VCC ------------------------------------------------------- 4.5V to 13.2V
z Junction Temperature --------------------------------------------------- -40°C to 125°C
z Ambient Temperature ---------------------------------------------------- -40°C to 85°C
Electrical Characteristics
VCC=12V, TA=25, unless otherwise specified
Parameter
Symbol
Test Conditions
Supply Input Section
Supply Voltage
Supply Current
Quiescent Supply Current
Power on Reset Threshold
Power on Reset Hysteresis
VCC
ICC
ICCQ
VCCRTH
VCCHYS
LGATE, UGATE open,
Switching.
No Switching.
Internal Oscillator
Free Running Frequency
Ramp Amplitude
Error Amplifier
Open Loop DC Gain
Gain-Bandwidth Product
Slew Rate
Trans-conductance
FSW
VOSC
EM5303
EM5303A
AO
GBW
SR
gm
Guaranteed by Design
Guaranteed by Design
Guaranteed by Design
Guaranteed by Design
EM5303QP
Pin Min Typ Max Units
5 4.5
13.2 V
5 3 mA
5 2 mA
5 4 4.2 4.4 V
5 0.2
V
170 200 230 KHz
255 300 345 KHz
1 Vp-p
55 70
dB
10 MHz
36
V/uS
0.2 0.7 mS
CYStek Product Specification

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EM5303A 전자부품, 판매, 대치품
CYStech Electronics Corp.
Spec. No. : C551QP
Issued Date : 2010.10.25
Revised Date :
Page No. : 7/12
Load Transient Response
Over Current Protection
IOUT Phase
VOUT
Phase
VOUT
IOUT
VIN=12VVOUT=1.2VCOUT=1000uF.
Over Current Protection
Phase
VOUT
IOUT
VIN=12V, VOUT=1.2V, COUT=1000uF.
Turn On to Short Circuit
Line Regulation
VIN=12V, VOUT=1.2V, COUT=1000uF.
Output short Ground
Load Regulation
Output current (A)
Switching Frequency vs. Input Voltage
EM5303QP
Input Voltage (V)
Input Voltage (V)
CYStek Product Specification

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