UCC3952-1, UCC3952-2, UCC3952-3, UCC3952-4

SingleCell LithiumIon Battery Protection IC

SLUS400D – AUGUST 2000

4

POST OFFICE BOX 655303

otherwise stated) (continued)

FET switch

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

V

Voltage at PACK

PACK+ > VOV ,

I(SWITCH) = 1 mA to 2 A,

Battery overcharged state switch permits discharge

current only.

100

400

mV

V(PACK–)

Voltage at PACK–

PACK+ = 2.5V,

I(SWITCH) = –1 mA to –2 A,

Battery overdischarged state switch permits charge

current only.

–600

–100

mV

RON

Series resistance of the device

PACK+ = 2.5 V,

In normal mode (when not in OV or UV). This value

includes package and bondwire resistance.

50

75

m

Ω

thermal shutdown

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

T(SD)

Thermal shutdown temperature (see Note 2)

135

°C

NOTE 2: This parameter is ensured by design and is not production tested.

detailed description

pin descriptions

BNEG

Connect the negative terminal of the battery to this pin.

PACK+

Connect to the positive terminal of the battery. This pin is available to the user.

CBPS

This power supply bypass pin is connected to PACK+ through an internal 3-k

Ω resistor. An external 0.1-µF

capacitor must be connected between this pin and BNEG.

PACK–

The negative terminal of the battery pack (negative terminal available to the user). The internal FET switch

connects this terminal to the BNEG terminal to give the battery pack user appropriate access to the battery. In

an overcharged state, only discharge current is permitted. In an overdischarged state, only charge current is

permitted.

SUB (DP Package Only)

Do not connect. These pins must be electrically isolated from all other pins. The SUB pins may be soldered to

an isolated copper pad for heatsinking. However, most applications do not require heatsinking.

TCLK

Production test mode pin. This pin is used to provide a high-frequency clock to the IC during production testing.

In an application, this pin is left unconnected or tied to BNEG.