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參數(shù)資料
| 型號： | LT3495BEDDB#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.78 A SWITCHING REGULATOR, PDSO10 |
| 封裝： | 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 299K |
| 代理商： | LT3495BEDDB#TRPBF |
LT3495/LT3495B/
LT3495-1/LT3495B-1
3
3495b1b1fa
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 LT3495/LT3495B/LT3495-1/LT3495B-1 are 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.
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 3V, VSHDN = VCC, unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch Current Limit
LT3495-1/LT3495B-1
l
275
350
450
mA
Switch VCESAT
LT3495/LT3495B, ISW = 400mA
LT3495-1/LT3495B-1, ISW = 200mA
200
125
mV
Switch Leakage Current
VSW = 5V
0.01
1
μA
PMOS Disconnect Current Limit
After Start-Up
During Start-Up
250
110
370
150
450
190
mA
PMOS Disconnect VCAP – VOUT
IOUT = 50mA, VCAP = 15V
150
mV
VCAP – VOUT Clamp Voltage
8.7
V
SHDN Input Voltage High
1.5
V
SHDN Input Voltage Low
0.3
V
SHDN Pin Bias Current
VSHDN = 3V
VSHDN = 0V
5.3
0
8μA
μA
CTRL Pin Bias Current
VCTRL = 0.5V, Current Flows Out of Pin
l
20
100
nA
CTRL to FB Offset
VCTRL = 0.5V
6
14
mV
Maximum Shunt Current
LT3495/LT3495-1, VFB = 1.5V
230
μA
Note 3: Internal reference voltage is determined by nding VFB voltage
level which causes quiescent current to increase 150μA above “Not
Switching” level.
Note 4: If CTRL is overriding the internal reference, Start-Up mode occurs
when VFB is less then half the voltage on CTRL. If CTRL is not overriding
the internal reference, Start-Up mode occurs when VFB is less then half the
voltage of the internal reference.
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C unless otherwise noted.
Switching Frequency
vs Load Current
Load Regulation
VOUT vs CTRL Voltage
LOAD CURRENT (mA)
0
SWITCHING
FREQUENCY
(kHz)
1000
800
400
200
600
0
80
40
3495 G01
120
60
20
100
VCC = 3.6V
VOUT = 16V
FIGURE 7 CIRCUIT
LOAD CURRENT (mA)
0
V
OUT
VOL
TAGE
CHANGE
(%)
1.5
1.0
0.0
–0.5
–1.0
0.5
–1.5
80
40
3495 G02
120
60
20
100
VCC = 3.6V
VOUT = 16V
FIGURE 7 CIRCUIT
CTRL VOLTAGE (V)
0
V
OUT
VOL
TAGE
(V)
18
15
9
6
3
12
0
1.2
0.6
3495 G03
1.5
0.9
0.3
FIGURE 7 CIRCUIT
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