MAX8760 查看數據表（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 = 0°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

TON = GND

(550kHz)

155 180 205

On-Time (Note 3)

tON

V+ = 12V,

VFB = VCCI = 1.2V

TON = REF

(300kHz)

TON = open

(200kHz)

320 355 390

ns

475 525 575

TON = VCC

(100kHz)

920 1000 1140

Minimum Off-Time (Note 3)

BIAS AND REFERENCE

TON = GND

tOFF(MIN)

TON = VCC, open, or REF

300 375

ns

400 480

Quiescent Supply Current (VCC)

ICC

Measured at VCC, FB forced above the

regulation point, OAIN- = FB, VOAIN+ = 1.3V

1.70 3.20

mA

Quiescent Supply Current (VDD)

IDD

Measured at VDD, FB forced above the

regulation point

<1

5

µA

Quiescent Battery Supply Current

(V+)

Shutdown Supply Current (VCC)

Shutdown Supply Current (VDD)

Shutdown Battery Supply Current

(V+)

Reference Voltage

Reference Load Regulation

FAULT PROTECTION

IV+

VREF

∆VREF

Measured at V+

Measured at VCC, SHDN = GND

Measured at VDD, SHDN = GND

Measured at V+, SHDN = GND,

VCC = VDD = 0V or 5V

VCC = 4.5V to 5.5V, IREF = 0

IREF = -10µA to 100µA

25

40

µA

4

10

µA

<1

5

µA

<1

5

µA

1.990 2.000 2.010

V

-10

+10

mV

Output Overvoltage Protection

Threshold

VOVP

2.00

V

Output Overvoltage Propagation

Delay

tOVP

FB forced 2% above trip threshold

10

µs

Output Undervoltage Protection

Threshold

VUVP

Measured at FB with respect to unloaded

output voltage

67

70

73

%

Output Undervoltage Propagation

Delay

tUVP

FB forced 2% below trip threshold

10

µs

VROK Threshold

Measured at FB

with respect to

unloaded output

voltage

Lower threshold

(undervoltage)

Upper threshold

(overvoltage)

SKIP = VCC

-12

-10

-8

%

+8

+10 +12

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