 |
| 型号： | BQ29400DCT3E6 |
| 厂商： |
 Texas Instruments |
| 标准： |   |
| 分类： | 电源 ， 电源管理 IC |
| 描述： | battery management 2nd level over vltg protection |
| PDF： | 预览 |
| 报错 收藏 赞 | |
Datasheet下载地址
| 本地下载 >> 厂商下载2 >> 第三方平台下载 >> |
BQ29400DCT3E6的详细信息
| Manufacturer： | Texas Instruments |
|---|---|
| Product Category： | Battery Management |
| RoHS： | Yes |
| Product Type： | Battery Protection |
| Brand： | Texas Instruments |
| Battery Type： | Li-Ion |
| Output Voltage： | 4.35 V |
| Operating Supply Voltage： | 4 V to 25 V |
| Maximum Operating Temperature： | + 85 C |
| Minimum Operating Temperature： | - 25 C |
| Package / Case： | SSOP-8 |
| Packaging： | Reel |
| Mounting Style： | SMD/SMT |
| Series： | BQ29400 |
| Factory Pack Quantity： | 3000 |
| Unit Weight： | 22.500 mg |
Not Recommended for New Designs:
bq29400, bq29400A, bq29405
bq29400, bq29400A
bq29401, bq29405
www.ti.com
SLUS568C–JULY 2003–REVISED SEPTEMBER 2005
VOLTAGE PROTECTION FOR 2-, 3-, OR 4-CELL Lion BATTERIES
nd
(2 PROTECTION)
FEATURES
FUNCTION
•
2-, 3-, or 4-Cell Secondary Protection
Low Power Consumption ICC < 2 µA
[VCELL(ALL) < V(PROTECT)
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.
•
]
•
High Accuracy Over Sense Voltage:
– bq29400: 4.35 V ±25 mV
– bq29400A: 4.40 V ±25 mV
– bq29401: 4.45 V ±25 mV
PW PACKAGE
(TOP VIEW)
– bq29405: 4.65 V ±25 mV
•
•
•
•
Prefixed Protection Threshold Voltage
Programmable Delay Time
1
2
3
4
8
7
6
5
VC1
VC2
VC3
GND
OUT
VDD
CD
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
VC4
APPLICATIONS
•
DCT PACKAGE
(TOP VIEW)
2nd Level Protection in Lion Battery Packs in
– Notebook PCs
1
2
3
4
8
OUT
VC1
– Portable Instrumentation
– Medical and Test Equipment
VDD
CD
VC2
VC3
7
6
5
VC4
GND
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.
ORDERING INFORMATION
PACKAGE
SYMBOL
TA
V(PROTECT)
MSSOP (DCT3)
bq29400DCT3
bq29400ADCT3
bq29401DCT3
bq29405DCT3
TSSOP (PW)(1)
bq29400PW
Not Available
bq29401PW
Not Available
SYMBOL
4.35 V
4.40 V
4.45 V
4.65 V
CIQ
CIT
CIR
CIS
2400
-
2401
-
–25°C to 85°C
(1) The bq29400, bq29400A, bq29401, and bq29405 are available taped and reeled. Add an R suffix to the device type (e.g.,
bq29400PWR) to order tape and reel version.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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