MAX8939EWVT datasheet(3/43 Pages) MAXIM

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_______________________________________________________________________________________ 3

System Power Management

for Mobile Handset

ELECTRICAL CHARACTERISTICS (continued)

(VBATT = 3.7V, VCHG_IN = 5.0V, circuit of Figure 1, TA = -40NC to +85NC, unless otherwise noted. Typical values are at TA = +25NC.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

LOGIC AND CONTROL OUTPUTS

IRQ (Open-Drain Output)

Output Low Voltage

IIRQ = 2mA

0.4

PWR_ON_CMP (Open-Drain

Output) Output Low Voltage

IPWR_ON_CMP = 2mA

0.4

SDA Output Low Level

ISDA = 6mA

0.4

I2C SERIAL INTERFACE (VSCL = VSDA = 3V) (Figure 15)

Clock Frequency

400

kHz

Bus-Free Time Between START and

STOP

tBUF

1.3

Hold Time Repeated START

Condition

tHD_STA

0.6

SCL Low Period

tLOW

1.3

SCL High Period

tHIGH

0.6

Setup Time Repeated START

Condition

tSU_STA

0.6

SDA Hold Time

tHD_DAT

SDA Setup time

tSU_DAT

100

Maximum Pulse Width of Spikes

that Must Be Suppressed by the

Input Filter of Both DATA and CLK

Signals

Setup Time for STOP Condition

tSU_STO

0.6

CHG_IN

Input Operating Range

4.1

CHG_IN Trip Point

VCHG_IN - VBATT, rising

200

300

400

VCHG_IN - VBATT, falling

100

VCHG_IN - VBATT, hysteresis

200

Input Undervoltage Threshold (UV)

VCHG_IN rising, 500mV hysteresis (typ)

3.9

4.0

4.1

Input Overvoltage Threshold (OVP) VCHG_IN rising, 200mV hysteresis (typ)

10.2

10.6

Input Supply Current

IBATT = 0mA

750

1500

Shutdown Input Current

Charger disabled

500

CHG_IN to BATT Dropout

On-Resistance

VCHG_IN = 3.7V, VBATT = 3.6V

0.4

0.8

SAFE_OUT

SAFE_OUT Regulated Output

ISAFE_OUT = 15mA, VCHG_IN = 5V,

TA = 0NC to +85NC

4.75

4.90

5.00

ISAFE_OUT = 15mA, VCHG_IN = 10V,

TA = 0NC to +85NC

5.2

SAFE_OUT Current Limit

100

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