LTC4269CDKD-1-TRPBF datasheet(5/44 Pages) LINER

Part #	LTC4269CDKD-1-TRPBF

Description	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller

Download	44 Pages

Scroll/Zoom	100%

Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

Logo

5 / 44 page

LTC4269-1

5

42691fb

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: Pins with 100V absolute maximum guaranteed for T ≥ 0°C,

otherwise 90V.

Note 3: Active high PWRGD internal clamp self-regulates to 14V with

respect to VNEG. VCC has internal 19.5V clamp with respect to GND.

Note 4: All voltages are with respect to VPORTN pin unless otherwise noted.

Note 5: Input voltage speciﬁcations are deﬁned with respect to LTC4269-1

pins and meet IEEE 802.3af/at speciﬁcations when the input diode bridge

is included.

Note 6: Signature resistance is measured via the ΔV/ΔI method with the

minimum ΔV of 1V. The LTC4269-1 signature resistance accounts for the

additional series resistance in the input diode bridge.

Note 7: An invalid signature after the 1st classiﬁcation event is mandated

by the IEEE802.3at standard. See the Applications Information section.

Note 8: Class accuracy is with respect to the ideal current deﬁned as

1.237/RCLASS and does not include variations in RCLASS resistance.

Note 9: This parameter is assured by design and wafer level testing.

Note 10: VCC = 14V; PG, SG Open; VCMP = 1.5V, VSENSE– = 0V, RCMP = 1k,

RtON = 90k, RPGDLY = 27.4k, RENDLY = 90k, unless otherwise speciﬁed. All

voltages are with respect to GND.

Note 11: Supply current does not include gate charge current to the

MOSFETs. See the Applications Information section.

Note 12: Component value range guaranteed by design.

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Load Compensation

Load Compensation to VSENSE Offset Voltage

VRCMP with VSENSE+ = 0V

1

mV

Feedback Pin Load Compensation Current

VSENSE+ = 20mV, VFB = 1.230V

20

μA

UVLO Function

UVLO Pin Threshold (VUVLO)

●

1.215

1.240

1.265

V

UVLO Pin Bias Current

VUVLO = 1.2V

VUVLO = 1.3V

–0.25

–4.50

0

–3.4

0.25

–2.50

μA

Similar Part No. - LTC4269CDKD-1-TRPBF

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC4269CDKD-2	389Kb / 34P	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
	LTC4269CDKD-2-PBF	389Kb / 34P	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
	LTC4269CDKD-2-TR	389Kb / 34P	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
	LTC4269CDKD-2-TRPBF	389Kb / 34P	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support

More results

Similar Description - LTC4269CDKD-1-TRPBF

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC4269-1	383Kb / 44P	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller
	LTC4278	509Kb / 42P	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller and 12V Aux Support
	LTC4278	400Kb / 40P	IEEE 802.3at PD with Synchronous No-Opto Flyback Controller and 12V Aux Support
Texas Instruments	TPS23755	3Mb / 43P	[Old version datasheet] IEEE 802.3at PoE PD with No-Opto Flyback DC-DC Controller
	TPS23758	185Kb / 9P	[Old version datasheet] IEEE 802.3at PoE PD with No-Opto Sync Flyback DC-DC Controller
	TPS23758	2Mb / 47P	[Old version datasheet] IEEE 802.3at PoE PD with No-Opto Sync Flyback DC-DC Controller
Linear Technology	LTC4268-1	424Kb / 46P	High Power PD With Synchronous No-Opto Flyback Controller
	LTC4268-1	424Kb / 46P	High Power PD With Synchronous No-Opto Flyback Controller
	LTC4278	504Kb / 42P	Synchronous No-Opto Flyback Controller
	LT3837	250Kb / 28P	Isolated No-Opto Synchronous Flyback Controller

More results

LTC4269CDKD-1-TRPBF Datasheet(PDF) 5 Page - Linear Technology

LTC4269CDKD-1-TRPBF Datasheet(HTML) 5 Page - Linear Technology

Similar Part No. - LTC4269CDKD-1-TRPBF

Similar Description - LTC4269CDKD-1-TRPBF

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL