MAX1907A 查看數據表（PDF） - Maxim Integrated

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MAX1907A

Quick-PWM Master Controllers for Voltage Positioned CPU Core Power Supplies (IMVP-IV)

Maxim Integrated 

Quick-PWM Master Controllers for Voltage-

Positioned CPU Core Power Supplies (IMVP-IV)

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, VCC = VDD = VSHDN = VTON = VDPSLP = VBI = VOAIN- = 5V, VFB = VCSP = VCSN = VOAIN+ = VNEG = VPOS

= 1.26V, ILIM = VCC, SUS = D5 = D1= D0= S0 = S1 = S2 = B0 = GND, VD4 = VD3 = VD2 = 1V, VB2 = 2V. TA = 0°C to +85°C, unless

otherwise specified.)

PARAMETER

On-Time (Note 1)

Minimum Off-Time (Note 1)

SYMBOL

CONDITIONS

MIN

V+ = 5V, VFB = 1.2V, TON = GND

(1000kHz)

250

tON

V+ = 12V,

VFB = 1.2V

TON = REF (550kHz)

165

TON = open (300kHz)

320

TON = VCC = (200kHz)

465

TON = GND (1000kHz)

tOFF(MIN) TON = VCC, open or REF (200kHz, 300kHz,

or 550kHz)

TYP

270

190

355

515

300

400

MAX

290

215

390

565

375

475

UNITS

ns

ns

ns

DDO Delay Time

tDDO

Measured from the time FB reaches the

voltage set by S0–S2, clock speed set by

RTIME

32

clks

SKIP Delay Time

Measured from the time when DDO is

tSKIP asserted to the time in which the controller

30

clks

begins pulse-skipping operation

BIAS AND REFERENCE

Quiescent Supply Current (VCC)

ICC

Measured at VCC, FB forced above the

regulation point

1.3

2.0

mA

Quiescent Supply Current (VDD)

IDD

Measured at VDD, FB forced above the

regulation

0.1

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

Output Overvoltage

Protection Threshold

IV+

VREF

ΔVREF

Measured at V+

Measured at VCC, SHDN = GND

Measured at VDD, SHDN = GND

Measured at V+, SHDN = GND,

VCC = VDD = 0 or 5V

VCC = 4.5V to 5.5V, IREF = 0

IREF = -10µA to 100µA

21

40

µA

0.1

5

µA

0.1

5

µA

0.1

5

µA

1.990 2.000 2.010

V

-10

+10

mV

Measured at FB with respect to unloaded

13

16

19

%

output voltage, DAC code = 0.7V to 1.708V

Output Overvoltage

Propagation Delay

tOVP FB forced 2% above trip threshold

10

µs

Output Undervoltage

Protection Threshold

With respect to unloaded output voltage

DAC Code = 0.7V to 1.708V

67

70

73

%

Output Undervoltage

Propagation Delay

Output Fault Blanking Time

tUVP

tBLANK

FB forced 2% below trip threshold

The clock speed is set by RTIME (Note 2)

10

µs

32

clks

_______________________________________________________________________________________ 3

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