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MAX8772GTL

Dual-Phase, QuickPWM Controller for IMVP-6+ CPU Core Power Supplies

Maxim Integrated 

CONFIDENTIAL INFORMATION – RESTRICTED TO INTEL® IMVP-6 LICENSEES

MAX8770/MAX8771/MAX8772 Dual-Phase, Quick-

PWM Controller for IMVP-6+ CPU Core Power Supplies

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1. VDD = VCC = VSHDN = VPSI = VDPRSTP = 5V, DPRSLPVR = GNDS = PGND_ = GND, VFB = VCCI = VCSP_ = VCSN_

= 1.200V, D0–D6 set for 1.20V (D0–D6 = 0001100). TA = 0°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

RTIME = 71.5kΩ (12.5mV/µs nominal)

RTIME = 35.7kΩ (25mV/µs nominal) to 178kΩ

(5mV/µs nominal)

MIN TYP MAX UNITS

-10

+10

-15

+15

TIME Slew-Rate Accuracy

DPRSTP = high, DPRSLPVR = high,

RTIME = 35.7kΩ to 178kΩ, SR = 6.25mV/µs

-20

nominal to 1.25mV/µs nominal

+20

%

Startup and shutdown, RTIME = 35.7kΩ

(3.125mV/µs nominal) to 178kΩ

-20

+20

(0.625mV/µs nominal)

BIAS AND REFERENCE

Quiescent Supply Current (VCC)

ICC

Measured at VCC, FB forced above the

regulation point, DPRSLPVR = VCC

5

10

mA

Quiescent Supply Current (VDD)

Shutdown Supply Current (VCC)

Shutdown Supply Current (VDD)

Reference Voltage

Reference Load Regulation

FAULT PROTECTION

IDD

ICC(SHDN)

IDD(SHDN)

VREF

∆VREF

Measured at VDD, FB forced above the

regulation point, DPRSLPVR = VCC

Measured at VCC, SHDN = GND

Measured at VDD, SHDN = GND

VCC = 4.5V to 5.5V, IREF = 0

IREF = 0 to 500µA

IREF = -100µA to 0

0.01

1

µA

0.01

1

µA

0.01

1

µA

1.986 2.000 2.014

V

-2

-0.2

mV

0.21

6.2

Measured at FB with respect to unloaded

output voltage; rising edge;

250

300

350

mV

PWM mode or skip mode after output reaches

Output Overvoltage Protection

the regulation voltage

Threshold

(MAX8770/MAX8771 Only)

VOVP

Measured at FB;

rising edge

Skip mode and output

have not reached the

regulation voltage

1.75 1.80 1.85

V

Minimum OVP threshold

0.8

Output Overvoltage-

Propagation Delay

(MAX8770/MAX8771 Only)

tOVP

FB forced 25mV above trip threshold

10

µs

Output Undervoltage

Protection Threshold

Output Undervoltage

Propagation Delay

VUVP

tUVP

Measured at FB with respect to unloaded

output voltage

FB forced 25mV below trip threshold

-450 -400 -350

mV

10

µs

CLKEN Startup Delay

(Boot Time Period)

Measured from the time when FB reaches the

tBOOT boot target voltage based on the slew rate set

20

by RTIME

60

100

µs

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