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參數(shù)資料
| 型號： | 74LV4799PW |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | Timer for NiCd and NiMH chargers |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 162K |
| 代理商： | 74LV4799PW |
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
EN
V
in
PWRS
MOLLI/SCO
V
CC
SCI
SCAN
16
15
14
13
12
11
7
8
GND
R
C
DIS
10
9
SEL
I
OSC
R
S
R
D
QUICK REFERENCE DATA
GND = 0V; T
amb
= 25
°
C
SYMBOL
V
CC
DC supply voltage
PARAMETER
CONDITIONS
TYPICAL
0.9
TYPICAL
TYPICAL
6.0
UNIT
V
I
CC
Operating supply current
V
CC
= 3.3V; self-discharge mode;
R
s
= 100 k ;
C
1
= 220nF
V
CC
= 1 to 6 V
36
μ
A
f
Oscillator frequency tolerance
7
%
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
CODE
16-Pin Plastic DIL
0
°
C to +70
°
C
74LV4799 N
74LV4799 N
SOT38-4
16-Pin Plastic SO
0
°
C to +70
°
C
74LV4799 D
74LV4799 D
SOT109-1
16-Pin Plastic SSOP Type II
0
°
C to +70
°
C
74LV4799 DB
74LV4799 DB
SOT338-1
16-Pin Plastic TSSOP Type I
0
°
C to +70
°
C
74LV4799 PW
74LV4799PW DH
SOT403-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74LV4799PWDH | Timer for NiCd and NiMH chargers |
| 74LV4799 | Timer for NiCd and NiMH chargers(為 NiCd和NiMH 充電的定時器) |
| 74LV4799D | Timer for NiCd and NiMH chargers |
| 74LV4799N | Timer for NiCd and NiMH chargers |
| 74LV4799DB | Timer for NiCd and NiMH chargers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LV4799PW,112 | 功能描述:計時器和支持產(chǎn)品 3.3V TIMER NICD AND RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74LV4799PW,118 | 功能描述:計時器和支持產(chǎn)品 3.3V TIMER NICD AND RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74LV4799PWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Timer for NiCd and NiMH chargers |
| 74LV4799PW-T | 功能描述:計時器和支持產(chǎn)品 3.3V TIMER NICD AND NIMH CHARGER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| 74LV4799SD,118 | 功能描述:IC OSC TIMER CTRL 100KHZ 16SOIC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 可編程計時器和振蕩器 系列:74LV 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補償晶體振蕩器（TCXO） 計數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝 |
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