MAX14746 datasheet(4/41 Pages) MAXIM

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(VVB = 5.0V, VBAT = 4.2V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VBAT = 3.6V, VVB = 5.0V, VSYS = VSYS_REG,

TA = +25°C.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CHARGER PATH

BAT to SYS On-Resistance

RBAT_SYS

VBAT = 5V, IBAT = 400mA

mΩ

VBAT = 1.9V, IBAT = 100mA

BAT to SYS Switch-On

Threshold

VBAT_SYS_ON VSYS falling

BAT to SYS Switch-Off

Threshold

VBAT_SYS_OFF VSYS rising

-3

-1.5

SYS Charger Current-

Limiting Threshold Voltage

VSYS_LIM

SysMin[2:0] = 000, VBAT > 3.6V

VBAT +

0.1

SysMin[2:0] = 000, VBAT < 3.4V

3.6

SysMin[2:0] = 001, VBAT < 3.4V

3.7

SysMin[2:0] = 010, VBAT < 3.4V

3.8

SysMin[2:0] = 011, VBAT < 3.4V

3.9

SysMin[2:0] =100, VBAT < 3.4V

3.86

4.14

SysMin[2:0] =101, VBAT < 3.4V

4.1

SysMin[2:0] =110, VBAT < 3.4V

4.2

SysMin[2:0] =111, VBAT < 3.4V

4.3

Charger Current Soft-Start Time

BATTERY CHARGER LEVELS

Precharge Current

IPCHG

IPChg[1:0] = 00

IPChg[1:0] = 01

IPChg[1:0] = 10

PChg[1:0] = 11

100

Prequalification Threshold

VBAT_PCHG

VPChg = 0, VPChgLow[1:0] = 00, VBAT rising

2.15

VPChg = 0, VPChgLow[1:0] = 01, VBAT rising 2.15

2.25

2.35

VPChg = 0, VPChgLow[1:0] = 10, VBAT rising

2.35

VPChg = 0, VPChgLow[1:0] = 11, VBAT rising

2.45

VPChg = 1, VPChgHigh[1:0] = 00, VBAT rising

2.7

VPChg = 1, VPChgHigh[1:0] = 01, VBAT rising 2.70

2.80

2.90

VPChg = 1, VPChgHigh[1:0] = 10, VBAT rising

2.9

VPChg = 1, VPChgHigh[1:0] = 11, VBAT rising

Prequalification Threshold

Hysteresis

VBAT_PCHG_HYS

100

MAX14746/MAX14747

USB Detection with Smart Power

Selector Li+ Chargers

www.maximintegrated.com

Maxim Integrated │ 4

Electrical Characteristics (continued)

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