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MAX8660
(Rev.:2006)

High-Efficiency, Low-IQ, PMICs with Dynamic Voltage Management for Mobile Applications

Maxim Integrated 

High-Efficiency, Low-IQ, PMICs with Dynamic

Voltage Management for Mobile Applications

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VIN5 = VIN67 = VIN8 = 3.6V, Figure 3, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)

PARAMETER

I2C TIMING

Clock Frequency

Hold Time (Repeated) START

Condition

CLK Low Period

CLK High Period

Set-Up Time for a Repeated

START Condition

DATA Hold Time

DATA Set-Up Time

Set-Up Time for STOP Condition

Bus-Free Time Between STOP

and START

SYMBOL

fSCL

tHD;STA Figure 8

tLOW

tHIGH

tSU;STA Figure 8

tHD;DAT

tSU;DAT

tSU;STO

Figure 9

Figure 9

Figure 8

tBUF

CONDITIONS

MIN TYP MAX UNITS

400

kHz

0.6

µs

1.3

µs

0.6

µs

0.6

µs

0

µs

100

ns

0.6

µs

1.3

µs

Maximum Pulse Width of Spikes

that Must Be Suppressed by the

Input Filter of Both DATA and

CLK Signals

50

ns

Note 2: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed through cor-

relation using statistical quality control (SQC) methods.

Note 3: The dropout voltage is defined as VIN - VOUT when VOUT is 100mV below the nominal value of VOUT.

Note 4: Dropout voltage (VDO) is a function of the p-channel switch resistance (RPCH) and the inductor resistance (RL).

The given values assume RL = 50mΩ for the REG1 inductor and 67mΩ for the REG2 inductor:

VDO = ILOAD (RP + RL)

Note 5: The maximum output current (IOUT(MAX)) is:

I OUT(MAX)

=

I LIM

−

VOUT(1 − D)

2 x f xL

1 + (RN

+

RL )

(1 − D)

2 x f xL

where:

RN = n-channel synchronous rectifier RDS (on)

RP = p-channel power switch RDS (on)

RL = external inductor ESR

IOUT(MAX) = maximum output current provided by the PMIC

IOUT(TARGET) = maximum desired output current

f = operating frequency minimum

L = external inductor value

Note 6: Tested at 1.4V, default output voltage.

Note 7: All output voltages are possible in normal mode. In forced-PWM mode, the minimum output voltage is limited by 0.167 x

VIN. For example, with VIN = 5.688V, the minimum output is 0.95V.

10 ______________________________________________________________________________________

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