LTC1624 datasheet(3/36 Pages) LINER

Part #	LTC1624

Description	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller

Download	36 Pages

Scroll/Zoom	100%

Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

Logo

3 / 36 page

LTC1871

3

1871fe

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

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = VINTVCC = 5V, VRUN = 1.5V, RFREQ = 80k, VMODE/SYNC = 0V, unless

otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loop

VIN(MIN)

Minimum Input Voltage

2.5

V

I-Grade or H-Grade (Note 2)

●

2.5

V

IQ

Input Voltage Supply Current

(Note 4)

Continuous Mode

VMODE/SYNC = 5V, VFB = 1.4V, VITH = 0.75V

550

1000

μA

VMODE/SYNC = 5V, VFB = 1.4V, VITH = 0.75V,

I-Grade or H-Grade (Note 2)

●

550

1000

μA

Burst Mode Operation, No Load

VMODE/SYNC = 0V, VITH = 0.2V (Note 5)

250

500

μA

VMODE/SYNC = 0V, VITH = 0.2V (Note 5),

I-Grade or H-Grade (Note 2)

●

250

500

μA

Shutdown Mode

VRUN = 0V

10

20

μA

VRUN = 0V, I-Grade or H-Grade (Note 2)

●

10

20

μA

VRUN+

Rising RUN Input Threshold Voltage

1.348

V

VRUN–

Falling RUN Input Threshold Voltage

●

1.223

1.198

1.248

1.273

1.298

V

H-Grade (Note 2)

●

1.179

1.315

V

VRUN(HYST)

RUN Pin Input Threshold Hysteresis

50

100

150

mV

I-Grade (Note 2)

●

35

100

175

mV

H-Grade (Note 2)

●

35

300

mV

IRUN

RUN Input Current

160

nA

VFB

Feedback Voltage

VITH = 0.2V (Note 5)

●

1.218

1.212

1.230

1.242

1.248

V

VITH = 0.2V (Note 5), I-Grade or H-Grade (Note 2)

●

1.205

1.255

V

IFB

FB Pin Input Current

VITH = 0.2V (Note 5)

18

60

nA

ΔVFB

ΔVIN

Line Regulation

2.5V ≤ VIN ≤ 30V

0.002

0.02

%/V

2.5V ≤ VIN ≤ 30V, I-Grade or H-Grade (Note 2)

●

0.002

0.02

%/V

ΔVFB

ΔVITH

Load Regulation

VMODE/SYNC = 0V, VITH = 0.5V to 0.9V (Note 5)

●

– 1

–0.1

%

VMODE/SYNC = 0V, VITH = 0.5V to 0.9V (Note 5)

I-Grade or H-Grade (Note 2)

●

– 1

–0.1

%

ΔVFB(OV)

ΔFB Pin, Overvoltage Lockout

VFB(OV) – VFB(NOM) in Percent

2.5

6

10

%

gm

Error Ampliﬁer Transconductance

ITH Pin Load = ±5μA (Note 5)

650

μmho

VITH(BURST)

Burst Mode Operation ITH Pin Voltage

Falling ITH Voltage (Note 5)

0.3

V

VSENSE(MAX)

Maximum Current Sense Input Threshold

Duty Cycle < 20%

120

150

180

mV

Duty Cycle < 20%, I-Grade or H-Grade (Note 2)

●

100

200

mV

ISENSE(ON)

SENSE Pin Current (GATE High)

VSENSE = 0V

35

50

μA

ISENSE(OFF)

SENSE Pin Current (GATE Low)

VSENSE = 30V

0.1

5

μA

Oscillator

fOSC

Oscillator Frequency

RFREQ = 80k

250

300

350

kHz

RFREQ = 80k, I-Grade (Note 2)

●

250

300

350

kHz

RFREQ = 80k, H-Grade (Note 2)

●

240

300

360

kHz

Oscillator Frequency Range

50

1000

kHz

I-Grade or H-Grade (Note 2)

●

50

1000

kHz

Similar Part No. - LTC1624

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC1624	490Kb / 28P	High Efficiency SO-8 N-Channel Switching Regulator Controller
	LTC1624	205Kb / 24P	High Voltage, Current Mode Switching Regulator Controller with Programmable Operating Frequency
	LTC1624	764Kb / 32P	Wide Input Range, No RSENSE??Current Mode Boost, Flyback and SEPIC Controller
	LTC1624CS	490Kb / 28P	High Efficiency SO-8 N-Channel Switching Regulator Controller
	LTC1624CS8	490Kb / 28P	High Efficiency SO-8 N-Channel Switching Regulator Controller

More results

Similar Description - LTC1624

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC1871-1	517Kb / 36P	Wide Input Range, No RSENSE??Current Mode Boost, Flyback and SEPIC Controller
	LTC1871	411Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
	LTC1871IMS	527Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
	LTC1871	527Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
	LTC1871-1	530Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost, Flyback and SEPIC Controller
	LTC1871X	764Kb / 32P	Wide Input Range, No RSENSE??Current Mode Boost, Flyback and SEPIC Controller
	LTC1871EMS-7	477Kb / 36P	Wide Input Range, No RSENSE Current Mode Boost,
	LTC1871IMS	527Kb / 36P	Current Mode Boost Flyback and SEPIC Controller
	LTC1871-7	393Kb / 34P	High Input Voltage, Current Mode Boost, Flyback and SEPIC Controller
	LTC1871-7	455Kb / 32P	High Input Voltage,Current Mode Boost, Flyback and SEPIC Controller

More results

LTC1624 Datasheet(PDF) 3 Page - Linear Technology

LTC1624 Datasheet(HTML) 3 Page - Linear Technology

Similar Part No. - LTC1624

Similar Description - LTC1624

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

Datasheet Download

Link URL