LT3495(RevA) 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LT3495
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LT3495 Datasheet PDF : 16 Pages
| |||
LT3495/LT3495B/
LT3495-1/LT3495B-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications 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
Switch Leakage Current
PMOS Disconnect Current Limit
LT3495/LT3495B, ISW = 400mA
LT3495-1/LT3495B-1, ISW = 200mA
VSW = 5V
After Start-Up
During Start-Up
200
mV
125
mV
0.01
1
µA
250
370
450
mA
110
150
190
mA
PMOS Disconnect VCAP – VOUT
VCAP – VOUT Clamp Voltage
SHDN Input Voltage High
IOUT = 50mA, VCAP = 15V
150
mV
8.7
V
1.5
V
SHDN Input Voltage Low
0.3
V
SHDN Pin Bias Current
CTRL Pin Bias Current
CTRL to FB Offset
Maximum Shunt Current
VSHDN = 3V
VSHDN = 0V
VCTRL = 0.5V, Current Flows Out of Pin
VCTRL = 0.5V
LT3495/LT3495-1, VFB = 1.5V
5.3
8
µA
0
µA
l
20
100
nA
6
14
mV
230
µA
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 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.
Note 3: Internal reference voltage is determined by finding 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 TA = 25°C unless otherwise noted.
Switching Frequency
vs Load Current
1000
800
VCC = 3.6V
VOUT = 16V
FIGURE 7 CIRCUIT
600
400
200
0
0 20 40 60 80 100 120
LOAD CURRENT (mA)
3495 G01
Load Regulation
1.5
VCC = 3.6V
VOUT = 16V
1.0 FIGURE 7 CIRCUIT
0.5
0.0
–0.5
–1.0
–1.5
0
20 40 60 80 100 120
LOAD CURRENT (mA)
3495 G02
VOUT vs CTRL Voltage
18
FIGURE 7 CIRCUIT
15
12
9
6
3
0
0
0.3
0.6
0.9
1.2
1.5
CTRL VOLTAGE (V)
3495 G03
3495b1b1fa
3
Share Link: