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參數資料
| 型號： | LTC3496IUFD#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 2300 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封裝： | 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-28 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 296K |
| 代理商： | LTC3496IUFD#TRPBF |
LT3496
3
3496f
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 LT3496E is guaranteed to meet performance specications
from 0°C to 125°C junction temperature. Specications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3496I is guaranteed and tested over the full –40°C to 125°C operating
junction temperature range.
ELECTRICAL CHARACTERISTICS The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 5V, VSHDN = 5V, CAP1-3 = 5V, PWM1-3 = 5V, FADJ = 0.5V,
CTRL1-3 = 1.5V, OVP1-3 = 0V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switching Frequency
FADJ = 1.5V
FADJ = 0.5V
FADJ = 0.1V
1900
2100
1300
330
2300
kHz
Maximum Duty Cycle
FADJ = 1.5V (2.1MHz)
FADJ = 0.5V (1.3MHz)
FADJ = 0.1V (330kHz)
●
70
78
87
97
%
CTRL1-3 Input Bias Current
Current Out of Pin, CTRL1-3 = 0.1V
20
100
nA
FADJ Input Bias Current
Current Out of Pin, FADJ = 0.1V
20
100
nA
OVP1-3 Input Bias Current
Current Out of Pin, OVP1-3 = 0.1V
10
100
nA
OVP1-3 Threshold
0.95
1
1.05
V
VC1-3 Idle Input Bias Current
PWM1-3 = 0V
–20
0
20
nA
VC1-3 Output Impedance
CAP1-3 = 24V
4.5
M
EAMP gm (ΔIVC/ΔVCAP-LED)
CAP1-3 = 24V
200
S
SW1-3 Current Limit
(Note 3)
750
1000
1250
mA
SW1-3 VCESAT
ISW = 500mA (Note 3)
260
mV
SW1-3 Leakage Current
SHDN = 0V, SW = 5V
2
A
CAP1-3 Input Bias Current
180
250
A
CAP1-3, LED1-3 Idle Input Bias Current
PWM1-3 = 0V
1
A
CAP1-3, LED1-3 Input Bias Current in Shutdown
SHDN = 0V
1
A
SHDN Input Low Voltage
0.3
V
SHDN Input High Voltage
1.5
V
SHDN Pin Current
VSHDN = 5V
65
100
A
PWM1-3 Input Low Voltage
0.3
V
PWM1-3 Input High Voltage
1.2
V
PWM1-3 Pin Current
160
210
A
Gate Off Voltage (CAP1-3–TG1-3)
CAP1-3 = 40V, PWM1-3 = 0V
0.1
0.3
V
Gate On Voltage (CAP1-3–TG1-3)
CAP1-3 = 40V
5.5
6.5
7.5
V
Gate Turn-On Delay
CLOAD = 300pF, CAP1-3 = 40V (Note 5)
110
ns
Gate Turn-Off Delay
CLOAD = 300pF, CAP1-3 = 40V (Note 5)
110
ns
Note 3: Current limit and switch VCESAT is guaranteed by design and/or
correlation to static test.
Note 4: Absolute maximum voltage at the VIN and SHDN pins is 40V for
nonrepetitive 1 second transients, and 30V for continuous operation.
Note 5: Gate turn-on/turn-off delay is measured from 50% level of PWM
voltage to 90% level of gate on/off voltage.
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