LTM4651 datasheet(4/54 Pages) AD

4 / 54 page

LTM4655

Rev. 0

For more information www.analog.com

ORDER INFORMATION

PART NUMBER

PAD OR BALL FINISH

PART MARKING*

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(SEE NOTE 2)

DEVICE

FINISH CODE

LTM4655EY#PBF

SAC305 (RoHS)

LTM4655Y

BGA

–40°C to 125°C

LTM4655IY#PBF

SAC305 (RoHS)

LTM4655Y

BGA

–40°C to 125°C

LTM4655MPY#PBF

SAC305 (RoHS)

LTM4655Y

BGA

–55°C to 125°C

LTM4655IY

SnPb (63/37)

LTM4655Y

BGA

–40°C to 125°C

LTM4655MPY

SnPb (63/37)

LTM4655Y

BGA

–55°C to 125°C

• Contact the factory for parts specified with wider operating temperature

ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609.

• Recommended LGA and BGA PCB Assembly and Manufacturing

Procedures

• LGA and BGA Package and Tray Drawings

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SVINn(DC), VINn(DC) Input DC Voltage in Positive-VOUT

Configuration

VOUTn– = GND

3.1

VOUTn(RANGE)+

Range of Positive Output Voltage

Regulation

0.5V ≤ ISET

na–SVOUTn– ≤ 26.5V, IOUTn+ = 0A

(See Note 7)

0.5

26.5

VOUTn(24VDC)+

Output Voltage Total Variation with Line

and Load at VOUTn+ = 24V

29V ≤ VINn ≤ 40V, 0A ≤ IOUTn+ ≤ 4A, CINHn

= 4.7μF, CDn = 4.7μF, COUTHn = 2 × 47μF,

CLKIN

n Driven with 1.5MHz Clock

23.6

24.4

VOUTn(0.5VDC)+

Output Voltage Total Variation with Line

and Load at VOUTn+ = 0.5V

Measuring VOSNSn+ to ISETna

3.1V ≤ VINn ≤ 13.2V, 0A ≤ IOUTn+ ≤ 4A, CINHn

= 4.7μF, CDn = 4.7μF, COUTHn = 2 × 47μF,

ISET

na = 500mV, RfSETn = N/U (Note 6)

–15

RSVINFn

Resistor Between SVINn and SVINFn

Input Specifications

VINn(UVLO)

SVINn Undervoltage Lockout Threshold SVINn Rising

SVINn Falling

Hysteresis

2.4

150

2.85

2.6

250

3.1

2.9

IINRUSH(VINn)

Input Inrush Current at Start-Up

CINHn = 4.7μF, CDn = 4.7μF, COUTHn = 2 ×

47μF; IOUTn+ = 0A, ISETna Electrically

Connected to ISET

300

IQ(SVINn)

Input Supply Bias Current

Shutdown, RUN

n = GND

RUN

n = 3.3V

450

μA

IS(VINn)

Input Supply Current

CLKIN

n Open Circuit, IOUTn+ = 4A

2.9

IS(VINn, SHUTDOWN)

Input Supply Current in Shutdown

Shutdown, RUN

n = GND

µA

Output Specifications

IOUTn+

VOUTn+ Output Continuous Current

Range

(Note 3)

∆VOUTn(LINE)+/

VOUTn+

Line Regulation Accuracy

IOUTn+ = 0A, 29V ≤ VINn ≤ 40V

0.05

0.1

∆VOUTn(LOAD)+/

VOUTn+

Load Regulation Accuracy

VINn = 36V, 0A ≤ IOUTn+ ≤ 4A

0.05

0.75

VOUTn(AC)+

Output Voltage Ripple, VOUTn+

VINn = 12V, ISETna = 5V

mVP-P

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the specified internal

operating temperature range (Note 2). Specified as each individual output channel (Note 5). TA = 25°C, Test Circuit 1 (positive-VOUT,

noninverting step-down configuration with VOUTn– = GND), VINn = SVINn = 36V, EXTVCCn = 24V, RUNn = 3.3V, RISETn = 480k, RfSETn+ =

57.6kΩ, fSWn = 1.5MHz (CLKINn driven with 1.5MHz clock signal) and voltages referred to GND unless otherwise noted.

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