Rainbow-electronics MAX769 Manual de usuario descargar pdf (Pagina 4)

MAX769

2 or 3-Cell, Step-Up/Down,

Two-Way Pager System IC

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(OUT = 3.0V, BATT = 3.6V, T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.) (Note 1)

10mV overdrive

REG3 Output Voltage

µs

REG3

= 0 to 2mA 0.96 1.0 1.04 V

REG2

= 0 to 24mA, OUT = 3.0V, R

OFS

= 15kΩ

mV120 155 190REG2 Voltage Drop

3.2 3.3 3.4

15 50

LBO/RSO Response Time

(Note 16)

OUT = 3.0V, I

REG1

= 65mA

f = 268.8kHz, C

REG1

= 10µF ceramic

Falling input

CONDITIONS

f = 268.8kHz, C

REG1

= 10µF, ceramic, R

OFS

= 15kΩ,

OFS

= 0.1µF, I

REG2

= 15mA

dB30 40

REG2 Supply Rejection

(Note 16)

f = 268.8kHz, C

REG1

= 1µF ceramic dB40 50REG3 Supply Rejection (Note 16)

0.58 0.60 0.63LBI/RSIN Input Threshold

At thresholds of 200mV, 800mV, and 1270mV %

-2.0 2.0

- 15mV + 15mV

CH0 Error

At thresholds of 1200mV, 3200mV, and 5080mV %

-3.0 3.0

- 60mV + 60mV

mV10

CH0 Threshold Resolution

(Note 16)

V0.2 1.27CH0 Threshold Range (Note 16)

Measures NICD V1.2 5.08CH1 Threshold Range (Note 16)

Measures BATT V

CH1 Error

REG2

= 0.1mA to 24mA mV

nA-50 -3 50LBI/RSIN Input Current

1.2 5.08

OUT

= 1mA

CH2 Threshold Range (Note 16)

Measures BATT

mV40

CH2 Threshold Resolution

(Note 16)

30 400LBO/RSO Output Low

Measures NICD mV

Output = 5.5V nA1 250LBO/RSO Output Leakage

CH1 Threshold Resolution

(Note 16)

Ω

1.5 3.1REG1 PMOS On-Resistance

dB15 25

REG1 Supply Rejection (Note 16)

7.5 16 30

LBI/RSIN Input Hysteresis

(Note 16)

9REG2 Load Regulation

UNITSMIN TYP MAXPARAMETER

OUT

= 1mA, OUT = 4.9V V

3.15 3.45

REG1 Clamp Voltage

= +25°C

= -40°C to +85°C

At thresholds of 1200mV, 3200mV, and 5080mV %

-3.0 3.0

- 60mV + 60mV

CH2 Error

mV1 2 4CH0 Input Hysteresis (Note 16)

LINEAR REGULATORS

DATA-ACQUISITION AND VOLTAGE MONITORS

CH1 Input Hysteresis (Note 16) 4 8 16 mV

1 2 3 4 5 6 7 8 9 ... 15 16

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Rainbow-electronics MAX769 Manual de usuario Pagina 4

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