LT3517(RevA) 데이터 시트보기 (PDF) - Linear Technology
부품명
상세내역
제조사
LT3517 Datasheet PDF : 20 Pages
| |||
LT3517
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 5V, SHDN = 5V, PWM = 5V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
TGEN Input High Voltage
1.5
V
TGEN Input Low Voltage
0.4
V
TGEN Pin Bias Current
TGEN = 5V
100 200
μA
VREF Pin Voltage
VREF Pin Voltage Line Regulation
Gate Turn-On Delay
Gate Turn-Off Delay
Top Gate Drive VGS (VISP – VTG)
IREF = –100μA
3V < VIN < 40V
CLOAD = 1nF Between ISP and TG
CLOAD = 1nF Between ISP and TG
VISP = 24V, TGEN = 5V
PWM = 0V
● 1.96
2
2.04
V
0.03
%/V
200
ns
200
ns
7
V
0
0.3
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3517E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3517I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3517H is guaranteed over the full –40ºC to
150ºC operating junction temperature range. Operating lifetime is derated
at junction temperatures greater than 125ºC.
Note 3: Absolute maximum voltage at VIN, SHDN, PWM and TGEN pins
is 40V for nonrepetitive 1 second transients and 30V for continuous
operation.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability.
TYPICAL PERFORMANCE CHARACTERISTICS
VISP – VISN Threshold vs VCTRL
120
VIN = 5V
VISP = 24V
100 VC = 1V
TA = 25°C
80
60
40
20
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
VCTRL (V)
3518 G01
Switch Current Limit
vs Duty Cycle
2.0
1.5
Oscillator Frequency vs RT
10000
TA = 25°C
1.0
1000
0.5
TA = 25°C
0
0
20
40
60
DUTY CYCLE (%)
80
100
3517 G02
100
1
10
RT (kΩ)
100
3518 G03
3517fa
4
Share Link: 