BQ25708 datasheet(11/77 Pages) TI1

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bq25708

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SLUSCU2 – NOVEMBER 2017

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Electrical Characteristics (continued)

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

AIADPT

Input current sensing gain

V(IADPT) / V(ACP-ACN),

REG0x12[4] = 0

V/V

V(IADPT) / V(ACP-ACN),

REG0x12[4] = 1

V/V

VIADPT_ACC

Input current monitor

accuracy

V(ACP-ACN) = 40.96 mV

–2%

V(ACP-ACN) = 20.48 mV

–3%

V(ACP-ACN) =10.24 mV

–6%

V(ACP-ACN) = 5.12 mV

–10%

10%

CIADPT_MAX

Maximum output load

capacitance

100

VSRP/N_OP

Battery common mode range

Voltage on SRP/SRN

2.5

VIBAT_CLAMP

IBAT output clamp voltage

3.1

3.2

3.3

IIBAT

IBAT output current

AIBAT

Charge and discharge current

sensing gain on IBAT pin

V(IBAT) / V(SRN-SRP),

REG0x12[3] = 0,

V/V

V(IBAT) / V(SRN-SRP),

REG0x12[3] = 1,

V/V

IIBAT_CHG_ACC

Charge and discharge current

monitor accuracy on IBAT pin

V(SRN-SRP) = 40.96 mV

–2%

V(SRN-SRP) = 20.48 mV

–3%

V(SRN-SRP) =10.24 mV

–6%

V(SRN-SRP) = 5.12 mV

–12%

12%

CIBAT_MAX

Maximum output load

capacitance

100

SYSTEM POWER SENSE AMPLIFIER

VPSYS

PSYS output voltage range

3.3

IPSYS

PSYS output current

160

µA

APSYS

PSYS system gain

V(PSYS) / (P(IN)+ P(BAT)),

REG0x30[9] = 1

µA/W

VPSYS_ACC

PSYS gain accuracy

(REG0x3B[9] = 1), TA = 25°C

Adapter only with system

power = 19.5 V / 45 W

–5%

Battery only with system

power 11 V / 44 W (25°C)

–5%

VPSYS_CLAMP

PSYS clamp voltage

3.3

COMPARATOR

VBUS UNDER VOLTAGE LOCKOUT COMPARATOR

VVBUS_UVLOZ

VBUS undervoltage rising

threshold

VBUS rising

2.34

2.55

2.77

VVBUS_UVLO

VBUS undervoltage falling

threshold

VBUS falling

2.2

2.4

2.6

VVBUS_UVLO_HYST

VBUS undervoltage

hysteresis

150

VVBUS_CONVEN

VBUS converter enable rising

threshold

VBUS rising

3.2

3.5

3.9

VVBUS_CONVENZ

VBUS converter enable falling

threshold

VBUS falling

2.9

3.2

3.5

VVBUS_CONVEN_HYST

VBUS converter enable

hysteresis

400

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