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EM5305 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EM5305
기능 12V Synchronous Buck controller
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EM5305 데이터시트, 핀배열, 회로
12V Synchronous Buck controller
General Description
The EM5305 series are compact synchronous
-rectified buck controllers specifically designed to
operate from 5V or 12V supply voltage. The output
voltage is tightly regulated to the external
reference voltage from 0.4V to 3.0V. These devices
operate at fixed 300 kHz frequency and provide an
optimal level of integration to redwuce size and
cost of the power supply.
The controllers integrate internal MOSFET drivers
that support 12V+12V bootstrapped voltage for
high efficiency power conversion. The bootstrap
diode is built-in to simplify the circuit design and
minimize external part count.
Other features include internal soft-start,
under-voltage protection, over-voltage protection,
over-current protection and shutdown function.
With aforementioned functions, these parts
provide customers a compact, high efficiency,
well-protected and cost-effective solutions. These
parts are available in DFN3x3-10L package.
EM5305
Features
Tracking mode
300 kHz fixed frequency operation.
Voltage mode PWM control with external
compensation (GM)
Internal soft start
Integrated bootstrap diode
Low side MOS OC protection
OUT UV protection
OUT OV protection
Power Good Indicator
0.8V Reference Output
Pin Configuration
Ordering Information
Part Number
EM5305VT
Package
DFN3x3-10L
Lead-Free
Remark
Applications
Power Supplies for Microprocessors or
Subsystem Power Supplies
Cable Modems, Set Top Boxes, and xDSL
Modems
5V or 12V Input DC-DC Regulators
Graphics Cards
Typical Application Circuit
+5V to +12V
Disable
Enable
OFS 9
CS RS
REFOUT 10
COMP/
SD# 7
FB 6
5 VCC
1 BOOT
GND
UGATE
2
PHASE
3
LGATE
4
POK
8
VIN
+3.3V +5V +12V
Option
1. 1/(2×π×RS×CS)30KHz
2013/7/11
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EM5305 pdf, 반도체, 판매, 대치품
Absolute Maximum Ratings (Note1)
Supply voltage, VCC----------------------------------------------------------
EM5305
-0.3V to 16V
PHASE to GND
DC-------------------------------------------------------------------------------
<200ns-------------------------------------------------------------------------
-5V to 16V
-10V to 30V
BOOT to PHASE--------------------------------------------------------------- 16V
BOOT to GND
DC------------------------------------------------------------------------------
<200ns------------------------------------------------------------------------
-0.3V to PHASE+16V
-0.3V to 40V
UGATE
DC ----------------------------------------------------------------------------- VPHASE -0.3V to VBOOT + 0.3V
<200ns------------------------------------------------------------------------- VPHASE -5V to VBOOT +5V
LGATE
DC------------------------------------------------------------------------------- -0.3V to VCC + 0.3V
<200ns------------------------------------------------------------------------- -5V to VCC+5V
COMP/SD# & FB & OFS & REFOUT & POK------------------------------
Power Dissipation, PD @ TA = 25, DFN3x3-10L-------------------
Package Thermal Resistance, ΘJA, DFN3x3-10L (Note 2)------------
Junction Temperature-------------------------------------------------------
Lead Temperature (Soldering, 10 sec.)----------------------------------
Storage Temperature Range-----------------------------------------------
-0.3V to 7V
1.67W
60/W
150
260
-65to 150
ESD susceptibility (Note3)
HBM (Human Body Mode)------------------------------------------------ 2KV
MM (Machine Mode)------------------------------------------------------- 200V
Recommended Operating Conditions (Note4)
Supply voltage, VCC--------------------------------------------------------------
Junction Temperature Range--------------------------------------------------
Ambient Temperature Range---------------------------------------------------
4.5V to 13.2V
40°C to 125°C
40°C to 85°C
Electrical Characteristics
VCC=12V, TA=25, unless otherwise specified
Parameter
Symbol
Test Conditions
Min Typ Max Units
Supply Input Section
Supply Voltage
Supply Current
Shutdown Current
Power on Reset Threshold
Power on Reset Hysteresis
VCC
ICC
VCCRTH
VCCHYS
4.5
LGATE, UGATE open, Switching.
3.8
0.3
13.2
1.5
0.4
4.05 4.3
0.45 0.6
V
mA
mA
V
V
2013/7/11
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EM5305 전자부품, 판매, 대치품
EM5305
Power on-off from EN signal
Dynamic Vo Transition 1.1V to 1.5V
CH1:VCC, CH2:EN, CH3:Vo, CH4:COMP
Power on from VCC
CH1:OFS, CH2:Vo, CH3:POK, CH4:COMP
Vo Ripple
CH1:VCC, CH2:Vo, CH3:POK, CH4:COMP
UGATE AND LGATE Dis-overlap
CH1:UGATE, CH2:LGATE, CH3:Vo(ac)
CH1:UGATE, CH2:LGATE, CH3:PHASE
2013/7/11
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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

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