Rainbow-electronics MAX8730 Manual do Utilizador descarregar pdf (Página 9)

MAX8730

Low-Cost Battery Charger

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Note 1: Accuracy does not include errors due to external-resistance tolerances.

Note 2: In this mode, SRC current is drawn from the battery.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

BATTERY DETECTION

RELTH Operating Voltage Range

0.9 2.6 V

RELTH

= 0.9V

4.42

4.58

BATT Minimum Voltage Trip

Threshold

BATT

falling

RELTH

= 2.6V

12.77

13.23

PDS, PDL SWITCH CONTROL

Adapter-Absence-Detect

Threshold

ASNS

- V

BATT

, V

ASNS

falling

-310

-240

Adapter-Detect Threshold V

ASNS

- V

BATT

-140

-60 mV

PDS Output Low Voltage Result with respect to SRC, I

PDS

= 0 -7 -12 V

PDS/PDL Output High Voltage Result with respect to SRC, I

PD_

= 0

-0.5

PDS/ PDL Turn-Off Current V

PDS

= V

SRC

- 2V, V

SRC

= 16V 6 mA

PDS Turn-On Current PDS = SRC 6 mA

PDL Turn-On Resistance PDL = GND 50

100

200 kΩ

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1. V

SRC

= V

ASNS

= V

CSSP

= V

CSSN

= 18V, V

BATT

= V

CSIP

= V

CSIN

= 12V, V

VCTL

= V

ICTL

= 1.8V, MODE = float,

ACIN = 0, CLS = REF, REFON = LDO, INPON = LDO, RELTH = 2V. T

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 28 29

Low-Cost Battery Charger 1

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