SM6780AS Просмотр технического описания (PDF) - Nippon Precision Circuits

Номер в каталоге

Компоненты Описание

Список матч

SM6780AS

Ni-Cd/Ni-MH Battery Charger IC

Nippon Precision Circuits  

SM6780AS

Maximum Charging Time (TIME)

The SM6780AS supports 3 different maximum

charging time settings, in quick charge and supple-

mental charge modes, which can be selected on the

3-level input TIME (HIGH, MID, LOW). HIGH

level is achieved by pull-up, LOW level by pull-

down, and MID level by a high-resistance voltage

divider arrangement to set the voltage at VDD/2. The

voltage level on TIME should only be switched in

standby mode.

VDD = 5V, Ta = 25°C

TIME voltage level

HIGH

MID

LOW

Quick charge/supplemental charge time (minutes)

min

typ

max

192

240

288

96

120

144

64

80

96

Quick (Supplemental) Charge Inhibit (INH)

When INH goes HIGH, quick charge mode or sup-

plemental charge mode operation stops. While INH

is HIGH, the internal timer stops and pulse trickle

charging occurs. When INH goes LOW, the charging

mode is restored to the previously active mode and

the internal timer restarts.

Standby Mode

When the BATT input voltage is ≥ VSTB, the

SM6780AS is in standby mode. In this mode, the

internal timer is reset, and the LEDN and CHGN

outputs become high impedance. Standby mode is

released when the voltage applied to BATT falls

below VSTB.

NIPPON PRECISION CIRCUITS—8

Share Link: