Rainbow-electronics MAX8514 Manual de usuario descargar pdf (Pagina 5)

MAX8513/MAX8514

Wide-Input, High-Frequency, Triple-Output Supplies

with Voltage Monitor and Power-On Reset

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

= V

SUP2

= 12V, V

PVL

= V

BST

- V

= V

DRV3P

= 5V, V

SUP3N

= 3.3V, V

DRV3N

= -5V, C

= 4.7µF, C

REF

= 0.22µF, R

FREQ

15.0kΩ, T

= 0°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

ELECTRICAL CHARACTERISTICS

= V

SUP2

= 12V, V

PVL

= V

BST

- V

= V

DRV3P

= 5V, V

SUP3N

= 3.3V, V

DRV3N

= -5V, C

= 4.7µF, C

REF

= 0.22µF, R

FREQ

15.0kΩ, T

= -40°C to +125°C (Note 2), unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SEQ, PFI, PFO, POR

SEQ Input-Voltage High 2.4 V

SEQ Input-Voltage Low 0.8 V

SEQ Input Current V

SEQ

= 0 to V

110µA

POR

= 1.6mA 10 200

POR Output-Voltage Low

FB1

, V

FB2

, V

FB3P

FB3N

, out-of-regulation

POR

= 0.1mA,

= 1.0V

20 200

POR Output Leakage Current

FB1

, V

FB2

, and V

FB3P

or V

FB3N

, in-

regulation

0.001 1 µA

POR Power-Ready Delay Time

From V

FB1

, V

FB2

, and V

FB3P

or V

FB3N

, in-

regulation to POR = high impedance

140 315 560 ms

PFI Input Threshold Falling, V

HYST

= 20mV 1.20 1.22 1.25 V

PFI Input Bias Current V

PFI

= 1.0V 0.1 100 nA

PFO

= 1.6mA 20 200

PFO Output-Voltage Low PFI = 1.1V

PFO

= 0.1mA,

= 1.0V

10 200

PFO Output Leakage Current PFI = 1.4V, PFO = 5V 0.001 1 µA

THERMAL PROTECTION

Thermal Shutdown Junction temperature rising +170 °C

Thermal-Shutdown Hysteresis 25 °C

PARAMETER SYMBOL CONDITIONS MIN MAX UNITS

GENERAL

5.5 28.0

IN Operating Range

IN = VL 4.5 5.5

IN Supply Current

FB1

= 1.3V, V

FB2

= V

FB3

= 1.0V, does not

include switching current to PVL and BST,

SYNC/EN = VL

3.2 mA

IN Shutdown Current V

SYNC/EN

= 0, R

FREQ

= 50kΩ 300 µA

VL REGULATOR

VL Output Voltage V

= 6V to 28V, I

= 0.1mA to 40mA 4.75 5.25 V

VL Dropout Voltage From IN to VL, V

= 5V, I

= 40mA 610 mV

VL Undervoltage Threshold VL rising, V

HYST

= 675mV (typ) 3.6 4.2 V

1 2 3 4 5 6 7 8 9 10 ... 34 35

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Rainbow-electronics MAX8514 Manual de usuario Pagina 5

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