Rainbow-electronics MAX1870A Manual do Utilizador descarregar pdf (Página 3)

MAX1870A

Step-Up/Step-Down

Li+ Battery Charger

_______________________________________________________________________________________ 3

PARAMETER CONDITIONS

MIN

TYP

MAX

UNITS

DCIN = 0 0.1 2

ICTL = 0 0.1 2 CSIN Input Current

ICTL = REFIN 0.1 2

µA

ICTL Power-Down-Mode

Threshold Voltage

REFIN /

100

REFIN /

55

REFIN /

32

V

0 < V

ICTL

< V

REFIN

-1 +1

ICTL Input Bias Current

ICTL = DCIN = 0,

V

REFIN = 3.6V

-1 +1

µA

INPUT-CURRENT REGULATION

CLS = REF 97

105

113

Charger-Input Current-Limit

Accuracy (V

CSSP

- V

CSSN

)

CSSS = CSSP

CLS = REF x 0.845 81 88 95

mV

CLS = REF 97

105

113

System-Input Current-Limit

Accuracy (V

CSSP

- V

CSSS

)

CSSN = CSSP

CLS = REF x 0.845 81 88 95

mV

CSSP/CSSS/CSSN Input Voltage

Range

8 28 V

V

CSSP

= V

CSSN

= V

CSSS

= V

DCIN

= 6V -1 +1

CSSP Input Current

V

CSSP

= V

CSSN

= V

CSSS

= V

DCIN

= 8V, 28V

700 1200

µA

V

CSSP

= V

CSSN

= V

CSSS

= V

DCIN

= 6V -1 +1

CSSS/CSSN Input Current

V

CSSP

= V

CSSN

= V

CSSS

= V

DCIN

= 8V, 28V -1 +1

µA

CLS Input Range

V

REF

/ 2 V

REF

V

CLS Input Bias Current CLS = REF -1 +1 µA

IINP Transconductance V

CSSP

- V

CSSS

= 102mV, CSSN = CSSP 2.5

2.8

3.1

µA/mV

V

CSSP

- V

CSSN

= 200mV, V

IINP

= 0V

350

IINP Output Current

V

CSSP

- V

CSSS

= 200mV, V

IINP

= 0V

350

µA

V

CSSP

- V

CSSN

= 200mV, IINP float 3.5

IINP Output Voltage

V

CSSP

- V

CSSS

= 200mV, IINP float 3.5

V

SUPPLY AND LINEAR REGULATOR

DCIN Input Voltage Range 8 28 V

DCIN falling 4 6.2

DCIN Undervoltage Lockout

DCIN rising 6.3

7.85

V

DCIN Quiescent Current 8.0V < V

DCIN

< 28V 3.5 6 mA

BATT Input Voltage Range 0 19 V

DCIN = 0 0.1 1

BATT Input Bias Current

V

BATT

= 2V to 19V

300

500

µA

LDO Output Voltage No load 5.3 5.4 5.5 V

LDO Load Regulation 0 < I

LDO

< 10mA 70

150

mV

LDO Undervoltage Lockout V

DCIN

= 8V, LDO rising

4.00

5.0

5.25

V

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 2, V

DCIN

= V

CSSP

= V

CSSN

= V

CSSS

= V

VHP

= 18V, V

BATT

= V

CSIP

= V

CSIN

= V

BLKP

= 12V, V

REFIN

= 3.0V, V

ICTL

=

0.75 x V

REFIN

, VCTL = LDO, CELLS = FLOAT, GND = PGND = 0, V

DLOV

= 5.4V, T

A

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

values are at T

A

= +25°C.)

1 2 3 4 5 6 7 8 ... 31 32

Comentários a estes Manuais

Sem comentários