Rainbow-electronics MAX8730 Manual do Utilizador descarregar pdf (Página 6)

MAX8730

Low-Cost Battery Charger

6 _______________________________________________________________________________________

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

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

= +25°C.)

ELECTRICAL CHARACTERISTICS

(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.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

PDS Turn-On Current PDS = SRC 6 12 mA

PDL Turn-On Resistance PDL = GND 50

100

200 kΩ

PDS/PDL Delay Time 5.0 µs

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CHARGE-VOLTAGE REGULATION

VCTL Range 0 3.6 V

Not including resistor

tolerances

-1.2 +1.2

VCTL

= 3.6V

or 0V

Including 1% resistor

tolerances

-1.25

+1.25

Battery-Regulation-Voltage

Accuracy

VCTL

= V

LDO

(3 or 4 cells) -0.8 +0.8

VCTL

Default Threshold V

VCTL

rising 4.4 V

VCTL Input Bias Current

SRC = BATT, ASNS = GND INPON =

REFON = 0, V

VCTL

= 5V

0 16 µA

CHARGE-CURRENT REGULATION

ICTL Range 0 3.6 V

128.25 141.75 mV

ICTL

= 3.6V

-5 +5 %

70 80 mV

Full-Charge-Current Accuracy

(CSIP to CSIN)

ICTL

= 2.0V

-6.7 +6.7 %

Trickle-Charge-Current Accuracy V

ICTL

= 120mV 2 10 mV

Charge-Current Gain Error Based on V

ICTL

= 3.6V and V

ICTL

= 0.12V -1.9 +1.9 %

Charge-Current Offset Error Based on V

ICTL

= 3.6V and V

ICTL

= 0.12V -2 +2 mV

BATT/CSIP/CSIN Input Voltage

Range

0 19 V

Charging enabled 1000

CSIP/CSIN Input Current

Charging disabled, SRC = BATT,

ASNS = GND, or V

ICTL

= 0V

µA

ICTL falling 50 80

ICTL Power-Down Mode

Threshold

ICTL rising 70 110

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

Low-Cost Battery Charger 1

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