BQ29401PW集成电路（IC）的电池管理规格书PDF中文资料

BQ29401PW属于集成电路（IC）的电池管理。由美国德州仪器公司制造生产的BQ29401PW电池管理电池管理 PMIC（电源管理集成电路）系列产品可用于电池相关的监测和控制功能，包括身份验证、电池平衡、状态监测、电量计量、电源选择、短路保护、过压和欠压保护等等。请注意，虽然该系列中的某些产品可能包括电池充电功能，但将充电功能作为主要功能的产品是单独分类的。

FEATURES

· 2-, 3-, or 4-Cell Secondary Protection

· Low Power Consumption ICC < 2 μA

[VCELL(ALL) < V(PROTECT)]

· High Accuracy Over Sense Voltage:

– bq29400: 4.35 V ±25 mV

– bq29400A: 4.40 V ±25 mV

– bq29401: 4.45 V ±25 mV

– bq29405: 4.65 V ±25 mV

· Prefixed Protection Threshold Voltage

· Programmable Delay Time

· High Power Supply Ripple Rejection

· Stable During Pulse Charge Operation

APPLICATIONS

· 2nd Level Protection in Lion Battery Packs in

– Notebook PCs

– Portable Instrumentation

– Medical and Test Equipment

DESCRIPTION

The bq29400, bq29400A, bq29401, and bq29405 are

BiCMOS secondary protection ICs for 2-, 3-, or 4-cell

Lithium-Ion battery packs that incorporate a

high-accuracy precision over voltage detection circuit.

They include a programmable delay circuit for over

voltage detection time.

FUNCTION

Each cell in a multiple cell pack is compared to an

internal reference voltage. If one cell reaches an

overvoltage condition, the protection sequence

begins. The bq2940x device starts charging an external capacitor through the CD pin. When the CD

pin voltage reaches 1.2 V, the OUT pin changes from

a low level to a high level.