IC PD/OPTO FLYBACK CTRLR 32-DFN

LTC4269CDKD-1#PBF

Manufacturer Part NumberLTC4269CDKD-1#PBF
DescriptionIC PD/OPTO FLYBACK CTRLR 32-DFN
ManufacturerLinear Technology
TypePower Over Ethernet (PoE)
LTC4269CDKD-1#PBF datasheet
 


Specifications of LTC4269CDKD-1#PBF

ApplicationsPower Interface Switch for Power Over Ethernet (PoE) DevicesVoltage - Supply14 V ~ 16 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case32-DFNCurrent - Supply1.35mA
InterfaceIEEE 802.3afController TypePowered Device Interface Controller (PD)
Input Voltage60VSupply Current6.4mA
Digital Ic Case StyleDFNNo. Of Pins32
Duty Cycle (%)88%Frequency100kHz
Operating Temperature Range0°C To +70°CMslMSL 1 - Unlimited
Rohs CompliantYesOperating Temperature (max)70C
Operating Temperature (min)0CPin Count32
MountingSurface MountPackage TypeDFN EP
Case Length7mmScreening LevelCommercial
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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LTC4269-1
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
PARAMETER
PWM Controller (Note 10)
Power Supply
V
Turn-On Voltage, V
CC
CC(ON)
V
Turn-Off Voltage, V
CC
CC(OFF)
V
Hysteresis
CC
V
Shunt Clamp
CC
V
Supply Current (I
)
CC
CC
V
Start-Up Current
CC
Feedback Amplifi er
Feedback Regulation Voltage (V
)
FB
Feedback Pin Input Bias Current
Feedback Amplifi er Transconductance
Feedback Amplifi er Source or Sink Current
Feedback Amplifi er Clamp Voltage
Reference Voltage Line Regulation
Feedback Amplifi er Voltage Gain
Soft-Start Charging Current
Soft-Start Discharge Current
Control Pin Threshold (V
)
CMP
Gate Outputs
PG, SG Output High Level
PG, SG Output Low Level
PG, SG Output Shutdown Strength
PG Rise Time
SG Rise Time
PG, SG Fall Time
Current Amplifi er
Switch Current Limit at Maximum V
CMP
ΔV
/ΔV
SENSE
CMP
Sense Voltage Overcurrent Fault Voltage
Timing
Switching Frequency (f
)
OSC
Oscillator Capacitor Value (C
)
OSC
Minimum Switch On Time (t
)
ON(MIN)
Flyback Enable Delay Time (t
)
ENDLY
PG Turn-On Delay Time (t
)
PGDLY
Maximum Switch Duty Cycle
SYNC Pin Threshold
SYNC Pin Input Resistance
4
l
The
denotes the specifi cations which apply over the full operating
= 25°C.
A
CONDITIONS
V
– V
CC(ON)
CC(OFF)
V
= 0V, I
= 15mA
UVLO
VCC
V
= Open (Note 11)
CMP
V
= 10V
CC
R
Open
CMP
ΔI
= ±10μA
C
V
= 0.9V
FB
V
= 1.4V
FB
12V ≤ V
≤ 18V
CC
V
= 1.2V to 1.7V
CMP
V
= 1.5V
SFST
V
= 1.5V, V
= 0V
SFST
UVLO
Duty Cycle = Min
V
= 0V; I
, I
= 20mA
UVLO
PG
SG
C
= 1nF
PG
C
= 1nF
SG
C
, C
= 1nF
PG
SG
+
V
SENSE
+
V
, V
< 1V
SENSE
SFST
C
= 100pF
OSC
(Note 12)
MIN
TYP
MAX
UNITS
l
14
15.3
16
V
8
9.7
11
V
4
5.6
6.5
V
19.5
20.5
V
4
6.4
10
mA
180
400
μA
1.220
1.237
1.251
V
200
nA
700
1000
1400
μmho
25
55
90
μA
2.56
V
0.84
V
0.005
0.02
%/ V
1400
V/ V
16
20
25
μA
0.8
1.3
mA
1
V
6.6
7.4
8
V
0.01
0.05
V
1.6
2.3
V
11
ns
15
ns
10
ns
88
98
110
mV
0.07
V/ V
206
230
mV
84
100
110
kHz
33
200
pF
200
ns
265
ns
200
ns
85
88
%
1.53
2.1
V
40
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