BA3170 Просмотр технического описания (PDF) - ROHM Semiconductor

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производитель

BA3170

Trickle-charge IC for two-cell, lithium-ion batteries

ROHM Semiconductor 

Regulator ICs

FReference data

S Output current limit value

BA3170

Set the value for the OCP voltage using R3 and R4(Ta =

25_C, VCC = 12V, Vbuf = 8.4V, and Vo = 7.4V (Typ.))

Fig.4

S Charging current and charge complete current for when the “end point voltage” is set to 8.4V ±50mV (Ta = 25_C and

VCC = 12V)

S Charge “end point voltage” temperature characteristic (VCC = 12V, R1 = 58.7kΩ, R2 = 10kΩ, and CT = 2.2V)

FOperation notes

(1) Application circuit (in the block diagram)

We guarantee the application circuit design, but recom-

mend that you thoroughly check its characteristics in ac-

tual use.

If you change any of the external component values,

check both the static and transient characteristics of the

circuit, and allow sufficient margin in your selections to

take into account variations in the components and ICs.

Note that Rohm has not fully investigated patent rights

regarding this product.

(2) Operating voltage range

Provided that the IC is operated within the recommended

operating voltage range, the operation of the circuit is

guaranteed within the allowed operating temperature

range.

With regard to the values for the characteristics, the rat-

ing values for electrical characteristics cannot be guaran-

teed, but within these ranges there will not be a dramatic

change in the values for the characteristics.

(3) Notes regarding power dissipation (Pd)

A derating characteristic is provided for power dissipa-

tion. Your design should not require the component to

dissipate more than its maximum allowed power dissipa-

tion over the operating temperature range.

400

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