Rainbow-electronics MAX16024 Instrukcja Użytkownika Pobierz pdf (Strona 3)

MAX16023/MAX16024

Battery-Backup Circuits with

Regulated Output Voltage

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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Line Regulation

= (V

OUT

+ 1V) to (V

OUT

+ 2V),

OUT

= 1mA

0.2 1.0 %/V

Load Regulation V

= V

OUT

+ 1V, I

OUT

= 1mA to 2mA 0.15 1.0 %

LDO = 1.2V 500

LDO = 1.8V 200

LDO = 2.5V 180

LDO = 3V 150

Dropout Voltage

OUT

= 50mA

(Note 4)

LDO = 3.3V 150

= 1.6V 75

Output Current Limit

≥ 2V 150

Battery Freshness Leakage

Current

BATT

= 5.5V 10 nA

RESET OUTPUT (RESET)

Reset Threshold V

(See Table 1) V

Falling to Reset Delay t

falling at 10V/ms 20 µs

Reset Timeout Period t

rising 145 215 285 ms

OUT

= 3.3V, I

SINK

= 3.2mA, RESET asserted 0.3

OUT

= 1.8V, I

SINK

= 1mA, RESET asserted 0.3RESET Output Low Voltage V

OUT

= 1.2V, I

SINK

= 100µA, RESET asserted 0.3

RESET Output High Voltage

(Push-Pull Output)

≥ 1.1 x V

, I

SOURCE

= 100µA,

RESET deasserted

OUT

- 0.3V V

RESET Output Leakage Current

(Open-Drain Output)

RESET

= 5.5V, reset deasserted 1 µA

POWER-FAIL COMPARATOR (PFI, PFO)

PFI Input Threshold V

PFT

PFI

falling, 1.6V ≤ V

≤ 5.5V 0.570 0.590 0.611 V

PFI Input Hysteresis V

PFI-HYS

30 mV

PFI Input Current I

PFI

-1 +1 µA

OUT

= 1.8V, I

SINK

= 1mA, PFO asserted 0.3

PFO Output Low Voltage

OUT

=1.2V, I

SINK

= 100µA, PFO asserted 0.3

PFO Output High Voltage

(Push-Pull Output)

SOURCE

= 100µA, PFO deasserted V

OUT

- 0.3V V

PFO Leakage Current

(Open-Drain Output)

PFO

= 5.5V, PFO deasserted 1 µA

PFO Delay Time (V

PFI

+ 100mV) to (V

PFI

- 100mV) 20 µs

MANUAL RESET (MR)

Input Low Voltage V

0.3 x V

Input High Voltage V

0.7 x V

Pullup Resistance Pullup resistance to V

20 30 kΩ

Glitch Immunity 100 ns

MR to Reset Delay 120 ns

ELECTRICAL CHARACTERISTICS (continued)

= 1.53V to 5.5V, V

BATT

= 3V, reset not asserted, T

= T

= -40°C to +85°C, C

OUT

= 10µF, unless otherwise noted. Typical val-

ues are at T

= T

= +25°C.) (Note 2)

1 2 3 4 5 6 7 8 ... 16 17

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