MAX17021 datasheet(3/48 Pages) MAXIM

3 / 48 page

Dual-Phase, Quick-PWM Controllers for

IMVP-6+/IMVP-6.5 CPU Core Power Supplies

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, V3P3 = 3.3V, DPRSLPVR = GNDS = GND, VCSP1

= VCSN1 = VCSP2 = VCSN1 = 1.0000V, FB = FBAC, RFBAC = 3.57kΩ from FBAC to CSN1, D6–D0 = [0101000]; MAX17082/MAX17482:

VSLOW = 5V; MAX17021: DPRSTP = GND; TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RTIME = 71.5k

(12.5mV/μs nominal)

-10

+10

RTIME = 35.7k

(25mV/μs nominal) to 178k

(5mV/μs nominal)

-15

+15

Soft-start and soft-shutdown:

RTIME = 35.7k

(3.125mV/μs nominal) to 178k

(0.625mV/μs nominal)

-25

+25

Slow:

IMVP-6.5 (MAX17082/MAX17482): VSLOW = 0V,

1/2 of nominal slew rate, RTIME = 71.5k

(6.25mV/μs nominal);

IMVP-6+ (MAX17021): VDPRSTP = VDPRSLPVR = 5V,

1/4 of nominal slew rate, RTIME = 71.5k

(3.125mV/μs nominal)

-15

+15

TIME Slew-Rate Accuracy

Slow:

IMVP-6.5 (MAX17082/MAX17482): VSLOW = 0V,

1/2 of nominal slew rate, RTIME = 35.7k

(12.5mV/μs nominal) to 178k

(2.5mV/μs

nominal);

IMVP-6+ (MAX17021): VDPRSTP = VDPRSLPVR = 5V

1/4 of nominal slew rate, RTIME = 35.7k

(6.25mV/μs nominal) to 178k

(1.25mV/μs

nominal)

-15

+15

RTON = 96.75k (600kHz per phase),

167ns nominal

-15

+15

RTON = 200k

(300kHz per phase),

333ns nominal

-10

+10

On-Time

tON

Measured

at DH_

(Note 3)

RTON = 303.25k (200kHz per phase),

500ns nominal

-15

+15

Minimum Off-Time

tOFF(MIN)

Measured at DH_ (Note 3)

300

350

TON Shutdown Input

Current

IRTON,SDN

SHDN = GND, VIN = 26V, VCC = VDD = 0V or 5V,

TA = +25°C

0.01

0.1

μA

BIAS CURRENTS

Quiescent Supply Current

(VCC)

ICC

Measured at VCC, VDPRSLPVR = 5V, FB forced

above the regulation point

2.5

Quiescent Supply Current

(VDD)

IDD

Measured at VDD, VDPRSLPVR = 0V, FB forced

above the regulation point, TA = +25°C

0.02

μA

MAX17021 Datasheet(PDF) 3 Page - Maxim Integrated Products

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