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LT3591 датащи(PDF) 3 Page - Linear Technology

номер детали LT3591
подробное описание детали  20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
PDF  24 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT3591 датащи(HTML) 3 Page - Linear Technology

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LT3498
3
3498f
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 LT3498 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C junction
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch Leakage Current
VSW1 = 16V
0.1
5
µA
CAP1 Pin Overvoltage Protection
26
27
28
V
Schottky Forward Voltage
ISCHOTTKY1 = 100mA
0.8
V
Schottky Reverse Leakage
VREVERSE1 = 20V
6
µA
OLED Driver
Feedback Voltage
VCTRL2 = 3V (Note 3)
●
1.18
1.215
1.25
V
Feedback Resistor
●
177
182
186
kΩ
Minimum Switch Off Time
After Start-Up
150
ns
Minimum Switch Off Time
During Start-Up (Note 4)
1
µs
Maximum Switch Off Time
VFB2 = 1.5V
●
15
20
30
µs
Switch Current Limit
180
300
400
mA
Switch VCESAT
ISW2 = 200mA
260
mV
Switch Leakage Current
VSW2 = 16V
0.1
5
µA
Schottky Forward Voltage
ISCHOTTKY2 = 100mA
800
mV
Schottky Reverse Leakage
VREVERSE2 = 20V
2
µA
PMOS Disconnect VCAP2 – VOUT2
IOUT2 = 10mA, VCAP2 = 5V
250
mV
CTRL2 to FB2 Offset
VCTRL2 = 0.5V
8
15
mV
Maximum Shunt Current
VFB2 = 1.3V
220
µA
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VIN = 3V, VCTRL1 = VCTRL2 = 3V.
Note 3: Internal reference voltage is determined by finding VFB2 voltage
level which causes quiescent current to increase 20µA above “Not
Switching” level.
Note 4: If CTRL2 is overriding the internal reference, start-up mode
occurs when VFB2 is less then half the voltage on CTRL2. If CTRL2 is not
overriding the internal reference, start-up mode occurs when VFB2 is less
then half the voltage of the internal reference.



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