计算机：笔记本电脑



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Maxim > 方案 > 计算机：笔记本电脑

用于电池组检测的高压监测

数据资料

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标题/型号

关键优势

QV PDF

MAX9922和MAX9923评估板
MAX9922EVKIT

QV PDF

DS2775、DS2776、DS2777和DS2778评估板
DS2775K, DS2776K, DS2777K, DS2778K

MAX1788评估板
MAX1788EVKIT

QV PDF

独立式、2节Li+电池电量计IC，提供保护电路和SHA-1认证选项
DS2775, DS2776, DS2777, DS2778

业内尺寸最小的独立式、2节电池电量计，集成Li+电池保护电路和SHA-1鉴定

QV PDF

MAX9938评估板
MAX9938EVKIT

QV PDF

基于OCV的独立式电量计
DS2786B

2线独立式电量计，无需学习过程即可提供初始容量估算或保持使用过程中的精度；可理想用于智能电话的push-mail功能

QV PDF

1µA、4焊球UCSP/SOT23封装、高精度电流检测放大器
MAX9938

尺寸最小的电流检测放大器：1mm x 1mm，I_CC < 1µA、V_OS < 500µV、增益误差< 0.5%

高级智能电池组控制器
MAX1788

尺寸最小、功耗最低的电池包控制器，集成了用户可编程微控制器核、库伦计数电量计量、多通道数据采集单元以及兼容于SMBus v1.1的主/从SMBus接口

QV PDF

高压、低电流电压监测器，SOT封装
MAX6457, MAX6458, MAX6459, MAX6460

Key Specifications: Battery Protectors, Selectors and Monitors

Part Number

Functions

Battery Type

Interface

User Data Storage (bytes)

Parameters Measured

Battery Protection

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

DS2775

•	Fuel Gauge

•

Protector

•	Status Monitor

1-2 Cell Li-Ion
2-4 Cell Li-Ion
2-6 Cell Li-Ion

1-Wire

16 EEPROM

Current
Temperature
Time
Voltage

Over Voltage
Over-Current
Over/Under Voltage

9.2

TDFN/14

-20 to +70

DS2776

•	Fuel Gauge

•

Protector

•	Status Monitor

1-2 Cell Li-Ion
2-4 Cell Li-Ion
2-6 Cell Li-Ion

1-Wire

16 EEPROM

Current
Temperature
Time
Voltage

Over Voltage
Over-Current
Over/Under Voltage

9.2

TDFN/14

-20 to +70

DS2777

•	Fuel Gauge

•

Protector

•	Status Monitor

1-2 Cell Li-Ion
2-4 Cell Li-Ion
2-6 Cell Li-Ion

2-Wire

16 EEPROM

Current
Temperature
Time
Voltage

Over Voltage
Over-Current
Over/Under Voltage

9.2

TDFN/14

-20 to +70

DS2778

•	Fuel Gauge

•

Protector

•	Status Monitor

1-2 Cell Li-Ion
2-4 Cell Li-Ion
2-6 Cell Li-Ion

2-Wire

16 EEPROM

Current
Temperature
Time
Voltage

Over Voltage
Over-Current
Over/Under Voltage

9.2

TDFN/14

-20 to +70

DS2786B

•	Fuel Gauge

1 Cell Li-Ion

2-Wire

32 EEPROM

Current
Temperature
Voltage

2.5

4.5

TDFN-EP/10

-40 to +85

See All Battery Protectors, Selectors and Monitors (26)

Key Specifications: Current Sense Amplifiers

Part Number

CMVR (min) (V)

CMVR (max) (V)

I_CC (typ) (µA)

Bidirectional Current-Sense

V_{SENSE_FS} (recommended) (mV)

V_OS (max) @25°C (µV)

A_V (Gain)

Gain Accuracy @25°C (max) (%)

-3dB BW (kHz)

Comparators

Package

Operating Temp. Range (°C)

MAX9938

1.6

25
50
100

500

25 V/V
50 V/V
100 V/V

0.5

30
60
125

µDFN/6
SOT/5
UCSP/4

-40 to +85

See All Current Sense Amplifiers (25)

Key Specifications: Supervisors (1 Monitored Voltage)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Max. I_CC (µA)

MAX6457

1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
>=5.5

Open Drain

85ms to 300ms
<1ms

No Watchdog

High Voltage (>6V)
Latched Output

12.5

MAX6458

1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
>=5.5

Open Drain

85ms to 300ms
<1ms

No Watchdog

High Voltage (>6V)
Latched Output
Overvoltage/Window Monitor

12.5

MAX6460

1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
>=5.5

Open Drain

<1ms

No Watchdog

High Voltage (>6V)
Overvoltage/Window Monitor

12.5

See All Supervisors (1 Monitored Voltage) (270)

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Supervisor Features

Max. I_CC (µA)

MAX6459

R/C Adjustable

1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
>=5.5

Open Drain

<1ms

No Watchdog

Adjustable Reset Input
High Voltage (>6V)
Overvoltage/Window Monitor

12.5

See All Supervisors (2 Monitored Voltages) (84)