MAX77751 datasheet(6/40 Pages) MAXIM

6 / 40 page

MAX77751

3.15A USB-C Autonomous Charger

for 1-Cell Li+ Batteries

www.maximintegrated.com

Maxim Integrated | 6

(Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed

by design and characterization.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LX = PGND or BYP, TA = +85°C

BST Leakage Current

BST = PGND or 1.8V, TA = +25°C

0.01

µA

BST = PGND or 1.8V, TA = +85°C

BYP Leakage Current

VBYP = 5V, VCHGIN = 0V, LX = 0V,

charger disabled, TA = +25°C

0.01

µA

VBYP = 5V, VCHGIN = 0V, LX = 0V,

charger disabled, TA = +85°C

SYS Leakage Current

VSYS = 0V, VBATT = 4.2V, charger

disabled, TA = +25°C

0.01

µA

VSYS = 0V, VBATT = 4.2V, charger

disabled, TA = +85°C

Minimum ON Time

tON-MIN

Minimum OFF Time

tOFF-MIN

Buck Current Limit

ILIM

5.16

6.0

6.84

Reverse Boost

Quiescent Current

Non-switching: output forced 200mV

above its target regulation voltage

2000

µA

Reverse Boost BYP

Voltage in OTG Mode

VBYP.OTG

4.94

5.1

5.26

CHGIN Output Current

Limit

ICHGIN.OTG.LI

3.4V < VBATT < 4.5V, TA = +25°C

1500

1725

Reverse Boost Output

Voltage Ripple

Discontinuous inductor current (i.e., skip

mode)

±150

Continuous inductor current

±150

BATT Regulation

Voltage Accuracy

TA = +25°C, BATT regulation voltage

(See the Ordering Information table)

-0.9

-0.3

+0.3

TA = 0°C to +85°C, BATT regulation

voltage (See the Ordering Information

table)

-1

-0.3

+0.5

Fast-Charge Current

Program Range

External resistor programmable

0.5

3.15

Fast-Charge Currents

IFC

TA = +25°C, VBATT > VSYSMIN,

programmed for 3.0A

2850

3000

3150

TA = +25°C, VBATT > VSYSMIN,

programmed for 2.0A

1900

2000

2100

TA = +25°C, VBATT > VSYSMIN,

programmed for 0.5A

465

500

535

Trickle Charge

Threshold

VTRICKLE

VBATT rising

3.0

3.1

3.2

Precharge Threshold

VPRECHG

VBATT rising

2.4

2.5

2.6

Prequalification

Threshold Hysteresis

VPQ-H

Applies to both VTRICKLE and VPRECHG

100

Trickle Charge Current

ITRICKLE

270

300

330

Precharge Charge

Current

IPRECHG

Charger Restart

Threshold

VRSTRT

100

150

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