- 您现在的位置：买卖IC网 > PDF目录97840 > 74LV4799PWDH-T (NXP SEMICONDUCTORS) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 PDF资料下载
参数资料
| 型号： | 74LV4799PWDH-T |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 文件页数： | 11/18页 |
| 文件大小： | 179K |
| 代理商： | 74LV4799PWDH-T |
Philips Semiconductors
Product specification
74LV4799
Timer for NiCd and NiMH chargers
2
1998 Apr 20
853-2058 19258
FEATURES
Wide supply voltage range of 0.9 V to 6 V allows 1 to 4-cell
applications
10 V allowed on special inputs
Supports virtually all battery chargers, including switched-mode
power supplies
On-chip timer calculates the actual capacity of the battery by
measuring the charger time, discharge time and self-discharge time
Automatic switch-over to trickle charge after completion of the
charge time
Can be adjusted for use with different types of batteries:
– Charge time: 4 to 16 hours
– Discharge time: 15 minutes to 4.7 hours
– Self-discharge time: 50 to 100 days
Battery status indication included:
– LED output for charging/full indication
– MOLLI output for battery-low indication
LED mode select allows two different methods of indication
Automatic power-ON reset
Low-power consumption
Requires only a few peripheral components
Very accurate on-chip oscillator
Scan test facilities included
I
CC category: non-standard.
APPLICATIONS
Time-controlled NiCd and NiMH low-current chargers
Domestic appliances such as rechargeable battery shavers,
electric toothbrushes etc.
Portable equipment such as notebook PCs, laptop PCs, camera
flash units etc.
Personal communications like cordless telephones, personal
mobile radios, pagers, etc.
DESCRIPTION
The 74LV4799 is a low-voltage Si-gate CMOS control IC for battery
management. It consists of:
17-stage divider
10-stage up/down counter
Control logic
Integrated precision oscillator (using external timing components)
Automatic power-ON reset
Scan test facilities
Battery charging/full indication output (LED)
Battery-low indication output (MOLLI)
Open-drain-N outputs for driving the load transistor
Battery management with the 74LV4799 is based on the principle of
time measurement. It measures the charge time, discharge time and
self-discharge time by means of a very accurate on-chip oscillator, a
divider and an up/down counter.
PIN CONFIGURATION
SV01643
1
2
3
4
5
6
LED
EN
Vin
PWRS
MOLLI/SCO
VCC
SCI
SCAN
16
15
14
13
12
11
7
8
GND
RC
DIS
10
9
SEL
IOSC
RS
RD
QUICK REFERENCE DATA
GND = 0V; Tamb = 25°C
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
VCC
DC supply voltage
0.9
6.0
V
ICC
Operating supply current
VCC = 3.3V; self-discharge mode;
Rs = 100 kW;
C1 = 220nF
36
A
Df
Oscillator frequency tolerance
VCC = 1 to 6 V
7
%
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
CODE
16-Pin Plastic DIL
0
°C to +70°C
74LV4799 N
SOT38-4
16-Pin Plastic SO
0
°C to +70°C
74LV4799 D
SOT109-1
16-Pin Plastic SSOP Type II
0
°C to +70°C
74LV4799 DB
SOT338-1
16-Pin Plastic TSSOP Type I
0
°C to +70°C
74LV4799 PW
74LV4799PW DH
SOT403-1
相关PDF资料 |
PDF描述 |
|---|---|
| 74V2G66CTR | DUAL 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO8 |
| 74V2T66CTR | DUAL 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO8 |
| 7705201FC | 8-CHANNEL, SGL ENDED MULTIPLEXER, CDFP16 |
| 7705201FA | 8-CHANNEL, SGL ENDED MULTIPLEXER, CDFP16 |
| 7705201EA | 8-CHANNEL, SGL ENDED MULTIPLEXER, CDIP16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 74LV4799PW-T | 功能描述:计时器和支持产品 3.3V TIMER NICD AND NIMH CHARGER RoHS:否 制造商:Micrel 类型:Standard 封装 / 箱体:SOT-23 内部定时器数量:1 电源电压-最大:18 V 电源电压-最小:2.7 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| 74LV4799SD,118 | 功能描述:IC OSC TIMER CTRL 100KHZ 16SOIC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:74LV 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:45 系列:- 类型:温度 - 补偿晶体振荡器（TCXO） 计数:- 频率:25MHz 电源电压:3.135 V ~ 3.465 V 电流 - 电源:1.5mA 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 包装:管件 供应商设备封装:16-SOIC W 安装类型:表面贴装 |
| 74LV540A | 制造商:TI 制造商全称:Texas Instruments 功能描述:OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| 74LV540APWJ | 功能描述:74LV540APW/SOT360/TSSOP20 制造商:nexperia usa inc. 系列:* 零件状态:在售 标准包装:2,500 |
| 74LV541 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Octal buffer/line driver 3-State |
发布紧急采购，3分钟左右您将得到回复。