LTM4659

2

Rev. 0

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PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN ............................................................... –0.3V to 6V

VOUT............................................................ –0.3V to VIN

PGOOD......................................................... –0.3V to 6V

RUN, SSTT, MODE/SYNC,

FB, COMP, FREQ ......................................... –0.3V to VIN

Operating Junction Temperature

(Note 2).................................................. –40°C to 125°C

Storage Temperature Range .................. –55°C to 125°C

Peak Solder Reflow Body Temperature .................260°C

Note that the peak reflow temperature must not exceed

260°C, including the reworking process.

(Note 1)

LGA PACKAGE

25-PIN (4mm × 4mm × 1.43mm)

TJMAX = 125°C, θJA = 23°C/W,

θJCtop = 27.8°C/W, θJCbot = 5.7°C/W

WEIGHT = 86mg

TOP VIEW

RUN

AGND

FREQ

SSTT

PGOOD

A

5

1

2

3

4

FB

COMP

B

C

D

E

VOUT

GND

MODE/SYNC

VIN

SW

ORDER INFORMATION

PART NUMBER

PAD OR BALL

FINISH*

PART MARKING

PACKAGE

TYPE

MSL

RATING

TEMPERATURE RANGE

(SEE Note 2)

DEVICE

FINISH CODE

LTM4659EV#PBF

Au (RoHS)

4659

4

LGA

4

–40°C to 125°C

LTM4659IV#PBF

Au (RoHS)

4659

4

LGA

4

–40°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

(See Pin Functions and Table 9)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input DC Voltage

l

2.25

5.5

V

VOUT(RANGE)

Output Voltage Range

MODE/SYNC = 1MHz, FREQ = VIN

l

0.5

VIN

V

VOUT(DC)

Output Voltage

MODE/SYNC = 1MHz, FREQ = VIN, VOUT = 0.5V l 0.4925

0.5

0.5075

V

VIN_UVLO

VIN Undervoltage Lockout

VIN Rising

2.0

2.1

2.2

V

VIN_UVLO_HYS

VIN Undervoltage Lockout Hysteresis

150

mV

VRUN

RUN Pin on Threshold

VRUN Rising

0.375

0.4

0.425

V

VRUN_HYS

RUN Pin Hysteresis

60

mV

IRUN

RUN Pin Leakage Current

RUN = 0.4V

±200

nA

IQ(VIN)

Input Supply Bias Current

Pulse-Skipping Mode

Forced Continuous Mode

Shutdown

MODE/SYNC = FREQ = VIN, VOUT = 1.5V

MODE/SYNC = 0V, FREQ = VIN, VOUT = 1.5V

RUN = 0V (Note 4)

1.6

70

1

mA

mA

μA

IS(VIN)

Input Supply Current

VOUT = 0.5V, IOUT = 10A

2.3

A

ELECTRICAL CHARACTERISTICS The

l

denotes the specifications which apply over the specified operating

temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 3.3V per the typical application.