Rainbow-electronics MAX8720 Manual de usuario descargar pdf (Pagina 4)

MAX8720

Dynamically Adjustable 6-Bit VID

Step-Down Controller

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, SHDN = SKIP = V

= V

= +5V, V

OUT

= 1.25V, T

= 0°C to +85°C, unless otherwise noted. Typical

values are at T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

= +25°C to +85°C

100 110

Current-Limit Threshold (Fixed) V

LIMIT

PGND

- V

ILIM = V

CC T

= 0°C to +85°C85

115

ILIM

= 2.00V

165 200 230

Current-Limit Threshold

(Adjustable)

LIMIT

PGND

- V

ILIM

= 0.50V 35 50 65

- V

PGND

, SKIP = ILIM = V

-140 -117

-90 mV

Current-Limit Threshold

(Negative)

NEG

- V

PGND

, SKIP = V

, adjustable mode,

percent of current limit

-117

Current-Limit Threshold (Zero

Crossing)

PGND

- V

, SKIP = GND 4 mV

Current-Limit Default

Switchover Threshold

0.4

ILIM Leakage Current 0.1 µA

GATE DRIVERS

QSOP package 1.0 3.5

DH Gate-Driver On-Resistance

(Note 3)

BST-LX forced to 5V

TQFN package 1.0 4.5

Ω

QSOP package 1.0 3.5

DL, high state

TQFN package 1.0 4.0

DL Gate-Driver On-Resistance

(Note 3)

DL, low state 0.4 1.0

Ω

DH Gate-Driver Source/Sink

Current

DH forced to 2.5V, BST-LX forced to 5V 2 A

DL Gate-Driver Source Current

(

SOURCE

)

DL forced to 2.5V 1.6 A

DL Gate-Driver Sink Current

(

SINK

)

DL forced to 2.5V 4 A

DL rising 35

Dead Time t

DEAD

DH rising 26

INPUTS AND OUTPUTS

Logic high 2.4

Logic low 0.4

SHDN Input Level V

SHDN

No-fault mode 12 15

Logic Input High Voltage V

D0–D5, SKIP, SUS 2.4 V

Logic Input Low Voltage V

D0–D5, SKIP, SUS 0.8 V

Logic Input Current D0–D5, SKIP, SUS -1 +1 µA

High

0.2

Open

3.15 3.85

REF

1.65 2.35

Four-Level Input Logic TON, S0, S1

GND 0.5

Input Leakage Current SHDN, TON, S0, S1 forced to V

or GND -3 +3 µA

1 2 3 4 5 6 7 8 9 ... 30 31

Step-Down Controller 1

Comentarios a estos manuales

Sin comentarios

Rainbow-electronics MAX8720 Manual de usuario Pagina 4

Comentarios a estos manuales

Relacionado con productos y manuales para Sensores Rainbow-electronics MAX8720