LTC3670 datasheet(2/12 Pages) LINER

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LTC3670

3670f

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN, ENBUCK, ENLDO1, ENLDO2,

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

SW, BUCKFB, LDO1_FB, LDO2_FB,

LDO1, LDO2...............................–0.3V to (VIN + 0.3V)

ISW.......................................................................600mA

ILDO1, ILDO2 ..........................................................250mA

IPGOOD....................................................................40mA

Junction Temperature ........................................... 125°C

Operating Temperature Range.................. –40°C to 85°C

Storage Temperature Range................... –65°C to 125°C

(Notes 1, 2, 3)

TOP VIEW

DDB PACKAGE

12-LEAD (3mm × 2mm) PLASTIC DFN

GND

ENLD01

ENLD02

ENBUCK

BUCKFB

VIN

LDO2

LDO1

LDO1_FB

LDO2_FB

PGOOD

TJMAX = 125°C, θJA = 76°C/W, θJC = 13.5°C/W

EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input Voltage Range

2.5

5.5

VUVLO

Undervoltage Lockout Threshold

VIN Rising

2.2

2.3

Undervoltage Lockout Hysteresis

100

VIN Quiescent Current, No Load

All Outputs Enabled

Buck Enabled Only

Buck Enabled Only, in Dropout

One LDO Enabled Only

Shutdown

(Note 4)

VBUCKFB = 0.9V

VBUCKFB = 0V

VENBUCK = VENLDO1 = VENLDO2 = 0V

700

110

1100

μA

VIL

VIH

ENBUCK, ENLDO1, ENLDO2 Pin Thresholds

Logic Low Voltage

Logic High Voltage

1.2

0.4

ENBUCK, ENLDO1, ENLDO2 Pin Pull-Down

Resistance

4MΩ

RPGOOD

PGOOD Pin Logic Low Output Resistance

PGOOD Pin Hi-Z Leakage

VPGOOD = 6V

μA

PGOOD Threshold on Feedback Voltages of

Enabled Regulators

(Note 5)

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 3.6V, unless otherwise noted.

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3670EDDB#PBF

LTC3670EDDB#TRPBF

LDBY

12-Lead (3mm

× 2mm) Plastic DFN

–40°C to 85°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

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