MAX8760ETL+ datasheet(4/39 Pages) MAXIM

Part #	MAX8760ETL+

Description	Dual-Phase, Quick-PWM Controller for AMD Mobile Turion 64 CPU Core Power Supplies

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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Dual-Phase, Quick-PWM Controller for AMD

Mobile Turion 64 CPU Core Power Supplies

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, VCC = VDD = V SHDN = V SKIP = VS0 = VS1 = 5V, VFB = VCMP = VCMN = VCSP = VCSN = 1.3V, OFS =

SUS = GNDS = D0–D5 = GND, TA = 0°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Undervoltage Fault and

VROK Transition Blanking Time

tBLANK

Measured from the time when FB reaches

the voltage set by the DAC code; clock

speed set by RTIME (Note 4)

24

Clks

VROK Startup Delay

Measured from the time when FB first

reaches the voltage set by the DAC code

after startup

357

ms

VROK Delay

tVROK

FB forced 2% outside the VROK trip

threshold

10

µs

VROK Output Low Voltage

ISINK = 3mA

0.4

V

VROK Leakage Current

High state, VROK forced to 5.5V

1

µA

VCC Undervoltage Lockout

Threshold

VUVLO(VCC)

Rising edge, hysteresis = 90mV, PWM

disabled below this level

4.0

4.25

4.4

V

Thermal-Shutdown Threshold

TSHDN

Hysteresis = 10°C

+160

°C

CURRENT LIMIT AND BALANCE

Current-Limit Threshold Voltage

(Positive, Default)

VLIMIT

CMP - CMN, CSP - CSN; ILIM = VCC

28

30

32

mV

VILIM = 0.2V

8

10

12

Current-Limit Threshold Voltage

(Positive, Adjustable)

VLIMIT

CMP - CMN, CSP - CSN

VILIM = 1.5V

73

75

77

mV

Current-Limit Threshold Voltage

(Negative)

VLIMIT(NEG)

CMP - CMN, CSP - CSN; ILIM = VCC,

SKIP = VCC

-41

-36

-31

mV

Current-Limit Threshold Voltage

(Zero Crossing)

VZERO

CMP - CMN, CSP - CSN; SKIP = GND

1.5

mV

CMP, CMN, CSP, CSN Input

Ranges

02

V

CMP, CMN, CSP, CSN Input

Current

VCSP = VCSN = 0 to 5V

-2

+2

µA

Secondary Driver-Disable

Threshold

VCSP

3

VCC - 1

VCC -

0.4

V

ILIM Input Current

IILIM

VILIM = 0 to 5V

0.1

200

nA

Current-Limit Default Switchover

Threshold

VILIM

3

VCC - 1

VCC -

0.4

V

Current-Balance Offset

VOS(IBAL)

(VCMP - VCMN) - (VCSP - VCSN); ICCI = 0,

-20mV < (VCMP - VCMN) < 20mV,

1.0V < VCCI < 2.0V

-2

+2

mV

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