MAX8760 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8760

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

Maxim Integrated 

Dual-Phase, Quick-PWM Controller for AMD

Mobile Turion 64 CPU Core Power Supplies

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 = -40°C to +100°C, unless otherwise specified.) (Note 5)

PARAMETER

SYMBOL

DL_ Gate-Driver On-Resistance

RON(DL)

VOLTAGE-POSITIONING AMPLIFIER

Input Offset Voltage

Common-Mode Input Voltage

Range

VOS

VCM

Output Voltage Swing

LOGIC AND I/O

SHDN Input High Voltage

VIH

SHDN Input Low Voltage

VIL

Tri-Level Input Logic Levels

D0–D5 Logic Input High Voltage

D0–D5 Logic Input Low Voltage

CONDITIONS

High state (pullup)

Low start (pulldown)

Guaranteed by CMRR test

|VOAIN+ - VOAIN-| ≥ 10mV,

RL = 1kΩ to VCC/2

VCC - VFBH

VFBL

SUS, SKIP

High

REF

Low

High

Four-Level Input Logic Levels

TON, S0 and S1

Open

REF

Low

MIN

-2.0

0

0.8

2.7

1.2

1.6

VCC -

0.4

3.15

1.65

MAX

4.5

2

UNITS

Ω

+2.0

mV

2.5

V

300

mV

200

V

0.4

V

2.3

V

0.8

V

0.8

V

3.85

V

2.35

0.4

Note 2: DC output accuracy specifications refer to the trip level of the error amplifier. When pulse skipping, the output slightly rises

(<0.5%) when transitioning from continuous conduction to no load.

Note 3: On-time and minimum off-time specifications are measured from 50% to 50% at the DHM and DHS pins, with LX_ forced to

GND, BST_ forced to 5V, and a 500pF capacitor from DH_ to LX_ to simulate external MOSFET gate capacitance. Actual in-

circuit times may be different due to MOSFET switching speeds.

Note 4: The output fault-blanking time is measured from the time when FB reaches the regulation voltage set by the DAC code.

During normal operation (SUS = GND), the regulation voltage is set by the VID DAC inputs (D0–D5). During suspend mode

(SUS = REF or high), the regulation voltage is set by the suspend DAC inputs (S0 and S1).

Note 5: Specifications to TA = -40°C and +100°C are guaranteed by design and are not production tested.

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