Rainbow-electronics MAX1510 Instrukcja Użytkownika Pobierz pdf (Strona 3)

MAX1510

Low-Voltage DDR Linear Regulator

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Note 1: Limits are 100% production tested at T

= +25°C. Limits over the operating temperature range are guaranteed through cor-

relation using statistical-quality-control (SQC) methods.

ELECTRICAL CHARACTERISTICS (continued)

= 1.8V, V

= 3.3V, V

REFIN

= V

OUTS

= 1.25V, SHDN = V

, circuit of Figure 1, T

= -40°C to +85°C, unless otherwise noted.

Typical values are at T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

REFERENCE

REFIN Voltage Range V

REFIN

0.5 1.5 V

REFIN Input Bias Current I

REFIN

-1 +1 µA

REFIN Undervoltage-Lockout

Voltage

Rising edge, hysteresis = 75mV 0.35 0.45 V

REFOUT Voltage V

REFOUT

= 3.3V, I

REFOUT

= 0

REFIN

-0.01

REFIN

+0.01

REFOUT Load Regulation ∆V

REFOUT

= ±5mA -20 +20 mV

FAULT DETECTION

Thermal-Shutdown Threshold T

SHDN

Rising edge, hysteresis = 15°C +165 °C

Undervoltage-Lockout

Threshold

UVLO

Rising edge, hysteresis = 100mV 2.45 2.55 2.65 V

IN Undervoltage-Lockout

Threshold

Rising edge, hysteresis = 55mV 0.9 1.1 V

Current-Limit Threshold I

LIMIT

1.8 3 4.2 A

Soft-Start Current-Limit Time t

200 µs

INPUTS AND OUTPUTS

PGOOD Lower Trip Threshold

With respect to feedback threshold,

hysteresis = 12mV

-200 -150 -100 mV

PGOOD Upper Trip Threshold

With respect to feedback threshold,

hysteresis = 12mV

100 150 200 mV

PGOOD Propagation Delay t

PGOOD

OUTS forced 25mV beyond PGOOD trip

threshold

51035µs

PGOOD Startup Delay

Startup rising edge, OUTS within ±100mV of

the feedback threshold

1 2 3.5 ms

PGOOD Output Low Voltage I

SINK

= 4mA 0.3 V

PGOOD Leakage Current I

PGOOD

OUTS = REFIN (PGOOD high impedance),

PGOOD = V

+ 0.3V

1µA

Logic high 2.0 V

SHDN Logic Input Threshold

Logic low 0.8 V

SHDN Logic Input Current SHDN = V

or GND -1 +1 µA

1 2 3 4 5 6 7 8 ... 12 13

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