BATTERY PROTECTION IC FOR 1-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)

S-8244 Series

Seiko Instruments Inc.

8

Test Circuits

(1) Test Condition 1, Test Circuit 1

Conditions:

• Set switches 1 and 2 to OFF for CMOS output models.

• Set switch 1 to ON and switch 2 to OFF for Nch open drain models.

• Set switch 1 to OFF and switch 2 to ON for Pch open drain models.

Definitions:

• Set V1, V2, V3 and V4 to 3.5 V and gradually increase V1:

CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” or Pch open

drain).

• Next, gradually decrease V1:

is turned to “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active

“L” or Pch open drain).

(2) Test Condition 2, Test Circuit 1

Conditions:

• Set switches 1 and 2 to OFF for CMOS output models.

• Set switch 1 to ON and switch 2 to OFF for Nch open drain models.

• Set switch 1 to OFF and switch 2 to ON for Pch open drain models.

Definitions:

• Set V1, V2, V3 and V4 to 3.5 V and gradually increase V2.

CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” or Pch open

drain).

• Next, gradually decrease V2.

is turned to “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active

“L” or Pch open drain).

(3) Test Condition 3, Test Circuit 1

Conditions:

• Set switches 1 and 2 to OFF for CMOS output models.

• Set switch 1 to ON and switch 2 to OFF for Nch open drain models.

• Set switch 1 to OFF and switch 2 to ON for Pch open drain models.

Definitions:

• Set V1, V2, V3 and V4 to 3.5 V and gradually increase V3.

CMOS output active “H” or Nch open drain) or “L” (for CMOS output active “L” or Pch open

drain).

• Next gradually decrease V3.

is turned to “L” (for CMOS output active “H” or Nch open drain) or “H” (for CMOS output active

“L” or Pch open drain).