MAX1710 データシートの表示（PDF） - Maxim Integrated

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MAX1710

High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs

Maxim Integrated 

High-Speed, Digitally Adjusted

Step-Down Controllers for Notebook CPUs

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VBATT = 15V, VCC = VDD = 5V, SKIP = GND, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

MIN TYP MAX

PGOOD Trip Threshold

Measured at FB with respect to unloaded output voltage,

falling edge, hysteresis = 1%

-8.5

-2.5

PGOOD Output Low Voltage

ISINK = 1mA

0.4

PGOOD Leakage Current

High state, forced to 5.5V

1

UNIT

%

V

µA

Note 2: On-Time and Off-Time specifications are measured from 50% point to 50% point at the DH pin with LX forced to 0V, BST

forced to 5V, and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching

speeds.

Note 3: Specifications from -40°C to 0°C are guaranteed but not production tested.

__________________________________________Typical Operating Characteristics

(7A CPU supply circuit of Figure 1, TA = +25°C, unless otherwise noted.)

EFFICIENCY vs. LOAD CURRENT

(VO = 2.0V, f = 300kHz)

100

VIN = 4.5V

90

80

VIN = 7V

70

VIN = 15V

60

VIN = 24V

50

EFFICIENCY vs. LOAD CURRENT

(VO = 1.6V, f = 300kHz)

100

VIN = 4.5V

90

VIN = 7V

80

70

VIN = 15V

60

VIN = 24V

50

EFFICIENCY vs. LOAD CURRENT

(VO = 1.3V, f = 300kHz)

100

VIN = 4.5V

90

VIN = 7V

80

70

VIN = 15V

60

VIN = 24V

50

40

0.01

0.1

1

10

LOAD CURRENT (A)

EFFICIENCY vs. LOAD CURRENT

(VO = 1.6V, f = 550kHz)

100

VIN = 4.5V

90

VIN = 7V

80

70

VIN = 15V

60

50

VIN = 24V

40

0.01

0.1

1

10

LOAD CURRENT (A)

40

0.01

0.1

1

10

LOAD CURRENT (A)

FREQUENCY vs. LOAD CURRENT

(VO = 1.6V)

350

300

VIN = 15V, PWM MODE

250

200 VIN = 4.5V, SKIP MODE

150

VIN = 15V, SKIP MODE

100

50

0

0.01

TON = OPEN

0.1

1

10

LOAD CURRENT (A)

40

0.01

0.1

1

10

LOAD CURRENT (A)

FREQUENCY vs. INPUT VOLTAGE

(IO = 7A)

320

318

316

314

312

VO = 2.0V

310

VO = 1.6V

308

306

304

302

TON = OPEN

300

0

5 10 15 20 25 30

INPUT VOLTAGE (V)

_______________________________________________________________________________________ 5

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