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EM5303A PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EM5303A
기능 PWM Controller
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EM5303A 데이터시트, 핀배열, 회로
5V/12V Synchronous Buck PWM Controller
EM5303/A
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.
Ordering Information
Part Number
EM5303GE
Package
PSOP-8
Frequency
200kHz
EM5303AGE
PSOP-8
300kHz
Applications
Notebook & Netbook
Graphic Cards & MB
Low Voltage Logic Supplies
Pin Configuration
Features
Operate from 5V to 12V Voltage Supply
0.6V VREF with 1.5% Accuracy
Voltage Mode PWM Control
200kHz or 300kHz Fixed Frequency
Oscillator
0% to 80% Duty Cycle
Internal Soft Start
Over Current Protection
Integrated Bootstrap Diode
Adaptive Non-Overlapping Gate Driver
Under Voltage Protection
Over Voltage Protection
Typical Application Circuit
2012/10/16
Rev.A.7
1




EM5303A pdf, 반도체, 판매, 대치품
EM5303/A
Absolute Maximum Ratings (Note 1)
Supply voltage, VCC-------------------------------------------------------------- -0.3V to 16V
PHASE to GND
DC------------------------------------------------------------------------------------- -5V to 16V
<200nS------------------------------------------------------------------------------- -10V to 32V
BOOT to PHASE-------------------------------------------------------------------- 16V
BOOT to GND
DC------------------------------------------------------------------------------------- -0.3V to PHASE+16V
<200nS------------------------------------------------------------------------------- -0.3V to 42V
UGATE
DC -----------------------------------------------------------------------------------
<200ns------------------------------------------------------------------------------
LGATE
VPHASE -0.3V to VBOOT + 0.3V
VPHASE -5V to VBOOT +5V
DC------------------------------------------------------------------------------------ -0.3V to VCC + 0.3V
<200ns------------------------------------------------------------------------------ -5V to VCC+5V
EN & FB------------------------------------------------------------------------------ -0.3V to 6V
Power Dissipation, PD @ TA = 25°C, PSOP-8 ------------------------------ 1.33W
Package Thermal Resistance, ΘJA, PSOP-8 (Note 2)-------------------------- 75°C/W
Junction Temperature----------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.)-------------------------------------- 260°C
Storage Temperature Range--------------------------------------------------- -65°C to 150°C
ESD susceptibility (Note3)
HBM (Human Body Mode)----------------------------------------------------- 2KV
MM (Machine Mode)------------------------------------------------------------ 200V
Recommended Operating Conditions (Note4)
Supply Voltage, VCC -------------------------------------------------------- 4.5V to 13.2V
Junction Temperature ---------------------------------------------------- -40°C to 125°C
Ambient Temperature ---------------------------------------------------- -40°C to 85°C
Electrical Characteristics
VCC=12V, TA=25, unless otherwise specified
Parameter
Symbol
Test Conditions
Pin Min Typ Max Units
Supply Input Section
Supply Voltage
Supply Current
Quiescent Supply Current
Power on Reset Threshold
Power on Reset Hysteresis
Internal Oscillator
VCC
5 4.5
13.2 V
ICC LGATE, UGATE open, Switching. 5 3 mA
ICCQ No Switching.
5 2 mA
VCCRTH
5 4 4.2 4.4 V
VCCHYS
5 0.2
V
Free Running Frequency
Ramp Amplitude
FSW
VOSC
EM5303
EM5303A
170 200 230 KHz
255 300 345 KHz
1 Vp-p
2012/10/16
Rev.A.7
4

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EM5303A 전자부품, 판매, 대치품
Load Transient Response
IOUT
VOUT
Phase
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
EM5303/A
Over Current Protection
Phase
VOUT
IOUT
VIN=12V, VOUT=1.2V, COUT=1000uF.
Output short Ground
Load Regulation
Output current (A)
Switching Frequency vs. Input Voltage
2012/10/16
Rev.A.7
Input Voltage (V)
Input Voltage (V)
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5V 12V Synchronous Buck PWM Controller

CYStech Electronics
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