LTC1760_1 datasheet(2/44 Pages) LINER

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LTC1760

1760f

TOP VIEW

FW PACKAGE

48-LEAD PLASTIC TSSOP

SCH2

GCH2

GCH1

SCH1

TGATE

BOOST

DCIN

VCC

BGATE

PGND

COMP1

CLP

CSP

CSN

VLIMIT

ILIMIT

TH1B

TH1A

SMBALERT

TH2A

TH2B

MODE

VCC2

VPLUS

BAT2

BAT1

SCN

SCP

GDCO

GDCI

GB1O

GB1I

GB2O

GB2I

LOPWR

VSET

ITH

ISET

DCDIV

SCL2

SCL

SCL1

VDDS

SDA2

SDA

SDA1

GND

Voltage from DCIN, SCP, SCN, CLP,

VPLUS, SW to GND................................... 32V/–0.3 V

Voltage from SCH1, SCH2 to GND ................ 28V/–0.3 V

Voltage from BOOST to GND ........................ 37V/ –0.3V

CSP, CSN, BAT1, BAT2 to GND ..................... 28V/–0.3V

LOPWR, DCDIV to GND ................................ 10V/ –0.3V

Voltage from VCC2, VDDS to GND .................... 7V/–0.3 V

SDA1, SDA2, SDA, SCL1, SCL2, SCL, SMBALERT

to GND ........................................................ 7V/–0.3V

MODE to GND ..................................... VCC2 +0.3V/–0.3V

COMP1 to GND ............................................... 5V/ –0.3V

Maximum DC Current Into Pin

SDA1, SDA2, SDA, SCL1, SCL2, SCL .............. ±3mA

TH1A, TH2A ..................................................... –5mA

TH1B, TH2B .................................................. –102µA

Operating Ambient Temperature (Note 6) .... 0°C to 70°C

Operating Junction Temperature ...........–40°C to 125°C

Storage Temperature .............................–65°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300°C

ORDER PART

NUMBER

TJMAX = 125°C, θJA = 110°C/W

LTC1760CFW

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

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

temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V, VVDDS = 3.3V, VVCC2 = 5.2V

unless otherwise noted.

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

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply and Reference

DCIN Operating Range

DCIN Selected

ICH0

DCIN Operating Current

Not Charging (DCIN Selected) (Note 10)

1.5

ICH1

Charging (DCIN Selected) (Note 10)

1.3

IVCC2_AC1

VCC2 Operating Current

AC Present (Note 11)

0.75

IVCC2_AC0

AC Not Present (Note 11)

100

µA

Battery Operating Voltage Range Battery Selected, PowerPath Function

Battery Selected, Charging Function (Note 2)

IBAT

Battery Drain Current

Battery Selected, Not Charging, VDCIN = 0V (Note 10)

175

µA

VPLUS Diodes Forward Voltage:

VFDC

DCIN to VPLUS

IVCC = 10mA

0.8

VFB1

BAT1 to VPLUS

IVCC = 0mA

0.7

VFB2

BAT2 to VPLUS

IVCC = 0mA

0.7

VFSCN

SCN to VPLUS

IVCC = 0mA

0.7

UVLO

Undervoltage Lockout Threshold VPLUS Ramping Down, Measured at VPLUS to GND

●

VVCC

VCC Regulator Output Voltage

●

4.9

5.2

5.5

VLDR

VCC Load Regulation

IVCC = 0mA to 10mA

●

0.2

Switching Regulator

VTOL

Voltage Accuracy

With Respect to Voltage Reported by Battery

●

–32

VCHMIN < Requested Voltage < VLIMIT

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