MAX17085BETL+ datasheet(3/37 Pages) MAXIM

Part #	MAX17085BETL+

Description	Integrated Charger, Dual Main Step-Down Controllers, and Dual LDO Regulators

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Manufacturer	MAXIM [Maxim Integrated Products]

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Integrated Charger, Dual Main Step-Down

Controllers, and Dual LDO Regulators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, no load on LDO5, LDO3, OUT5, OUT3, and REF, VCC = 5V, ON3 = ON5 = VCC, VDCIN = VLXC = VCSSP = VCSSN

= 19V, VBSTC - VLXC = 5V, VBATT = VCSIP = VCSIN = 12.6V, VVCTL = VISET = 1.8V, CELLS = open, TA = 0°C to +85°C, unless oth-

erwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DCIN Undervoltage-Lockout

Trip Point for Charger

VDCIN(UVLO)

VDCIN falling

7.0

7.2

V

VDCIN rising

7.7

7.9

DCIN POR Threshold

VDCIN(POR) Falling edge of DCIN

2.0

V

VCC Undervoltage Lockout

Threshold

VCC(UVLO)

Falling edge of VCC, PWM disabled below

this threshold

3.8

4.0

4.3

V

Rising edge of VCC

4.2

VCC POR Threshold

Falling edge of VCC

1.5

V

LINEAR REGULATORS

LDO_ Output-Voltage Accuracy

VLDO5

DCIN = 6V to 24V, ON5 = ON3 = GND

0mA < ILDO5 < 100mA, ON5 = GND

4.90

5.00

5.10

V

VLDO3

LDO5 = 5V, ILDO5 = 0

0mA < ILDO3 < 50mA, ON3 = GND

3.23

3.30

3.37

Internal LDO Voltage After

Switchover

VLDO5

Not production tested

4.4

4.5

4.6

V

VLDO3

Not production tested

2.7

2.8

2.9

LDO3 Short-Circuit Current

LDO3 = GND

50

130

mA

LDO5 Short-Circuit Current

LDO5 = GND

100

260

mA

LDO5 Bootstrap Switch

Resistance

LDO5 to OUT5, VOUT5 = 5V, ILDO5 = 50mA

1.0

2.5

I

LDO3 Bootstrap Switch

Resistance

LDO3 to OUT3, VOUT3 = 3.3V,

ILDO3 = 50mA

1.5

3

I

Thermal-Shutdown Threshold

tSHDN

Hysteresis = 50NC

+160

N

C

REFERENCE

REF Output Voltage

VREF

IREF = 50FA

2.09

2.10

2.11

V

REF Undervoltage-Lockout

Threshold

VREF_UVLO REF falling

2.0

V

MAIN SMPS

OUT5 Output Voltage Accuracy

VOUT5

IN = 6V to 28V, SKIP = REF

5.033

5.083

5.135

V

OUT3 Output Voltage Accuracy

VOUT3

IN = 6V to 28V, SKIP = REF

3.267

3.300

3.333

V

Load Regulation Error

Either SMPS, SKIP = 2V, ILOAD = 0 to 5A

-0.1

%

Either SMPS, SKIP = GND, ILOAD = 0 to 5A

-1.7

Either SMPS, SKIP = VCC, ILOAD = 0 to 5A

-1.5

Line Regulation Error

Either SMPS, IN = 6V to 28V

0.005

%/V

DH5 On-Time

tON5

IN = 12V,

VOUT5 = 5.0V (Note 3)

RTON = 549kI

(300kHz + 10%)

1073

1263

1452

ns

RTON = 202kI

(800kHz + 10%)

402

473

545

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