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부품번호 | IT7612 기능 |
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기능 | 2.0A 380kHz 23V High Efficiency Step-Down DC/DC Converter | ||
제조업체 | ITE Tech | ||
로고 | |||
IT7612
2.0A 380kHz 23V High Efficiency Step-Down DC/DC
Converter
Preliminary Specification V0.2.2
ITE TECH. INC.
This specification is subject to Change without notice. It is provided “AS IS” and for reference only. For
purchasing information, please contact the nearest ITE TECH sales representatives.
IT7612
Absolute Maximum Ratings
Input Supply Voltage……………………………+26V
SW Voltage……................................… - 1V to 27V
<10ns......................................... (-5V TO 30V)
EN Voltage……….…………………...- 1 to VIN+0.3V
Other Pins………………………………- 0.3V to +6V
Boost Voltage ………………..……………….Vsw+6V
ESD Classification……………………………..Class 2
Junction Temperature Range………………….. 150°C
Storage Temperature Range…………-65oC to 150°C
Lead Temperature (Soldering 10s)…………….260°C
Confidential Information
Package Thermal Characteristics
Power Dissipation at TA = 25°C
SOP8.............................................................1.098W
MSOP10EP.....................................................1.25W
Thermal Resistance
SOP8
MSOP10EP
θJA θJC
91 43 °C/W
80 18 °C/W
Recommended Operating Conditions
Supply Voltage (VIN)……………………4.5V to 23V
Operating Temperature……………..-40°C to +85°C
Note 1: Stresses beyond above listed under absolute maximum ratings may cause permanent damage to the device. These
are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications are not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2: Guaranteed by design, not production tested.
Note 3: For the measuring condition of θJA, it is under the natural convection at TA = 25°C and on a four-layer test board
with highly effective thermal conductivity following the JEDEC 51-7 thermal measurement standard. As for the case position
of θJC, it is on the exposed pad of the package.
DC Electrical Characteristics
(Recommended Operating Conditions; unless otherwise noted; VIN = 12V; TA = 25 oC)
Parameter
Conditions
Min.
Typ.
Max.
Supply Voltage
4.5 23
Shutdown Supply Current
VEN = 0V
10
Regulated Feedback Voltage
4.5V≦VIN≦23V
0.892
0.92
0.948
Error Amplifier Transconductance
Current Sense to COMP
Transconductance
△ICOMP = ±10μA
830
2.2
Current Limit
3.6
SW Leakage Current
VEN = 0V, VSW = 0V
10
High Side On Resistance
0.25
Low Side On Resistance
I
30
Oscillation Frequency
320 380 460
Short Circuit Oscillation Frequency
VFB=0V
100
Maximum Duty Cycle
VFB=0.7V
90
Minimum Duty Cycle
VFB=1.1V
0
Minimum On Time
100
Under Voltage Lockout Threshold
VIN Rising
3.9 4.2 4.3
Under Voltage Lockout Threshold
Hysteresis
400
Thermal Shutdown Threshold
160
EN High Level
2.4
Unit
V
μA
V
μA/V
A/V
A
μA
Ω
Ω
kHz
kHz
%
%
ns
V
mV
℃
V
EN UVLO Threshold Hysteresis
200 mV
EN Low Level
Icc<100uA
1.5 V
EN Input Current
VEN = 0V
1.1 1.8 2.5 μA
Soft-Start Current
VSS=0V
10 μA
Soft-Start Period
Css=0.1uF
9.2 mS
Note: Fully production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
www.ite.com.tw
3
IT7612 V0.2.2
4페이지 IT7612
VIN
(10V/Div)
Vo(AC)
(10mV/Div)
Sw
(20V/Div)
IL
(200mA/Div)
Steady State Waveforms
VIN=12V, VOUT=3.3V, IOUT=100mA
Time: (4uS/Div)
VIN
(10V/Div)
Vo(AC)
(10mV/Div)
Sw
(20V/Div)
IL
(2A/Div)
Confidential Information
Steady State Waveforms
VIN=12V, VOUT=3.3V, IOUT=2A
Time: (4uS/Div)
www.ite.com.tw
6
IT7612 V0.2.2
7페이지 | |||
구 성 | 총 22 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
IT7612 | 2.0A 380kHz 23V High Efficiency Step-Down DC/DC Converter | ITE Tech |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |