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參數(shù)資料
| 型號： | LTC1558CGN-5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Backup Battery Controller with Programmable Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 355K |
| 代理商： | LTC1558CGN-5 |
1
LTC1558-3.3/LTC1558-5
Backup Battery Controller
with Programmable Output
I
Complete Battery Backup System in an
SO-8, 16-Pin GN or SO Package
I
Generates Adjustable Backup Voltage from a
Single 1.2V NiCd Button Cell
I
Automatic Main Supply to Backup Switching
I
Minimum 100mW Output Power
I
Automatic Fast Recharge of NiCd Battery
I
Programmable NiCd Trickle Charge Current
I
Smart NiCd Charger Minimizes Recharge Time and
Maximizes System Efficiency After Backup
I
On-Chip Power-On Reset
I
Pushbutton Reset Input
I
Reset Assertion Guaranteed at V
CC
= 1V
I
Short-Circuit Protection
I
Thermal Limiting
FEATURES
DESCRIPTIO
N
U
The LTC
1558 is a backup battery controller that provides
all the functions necessary to implement a backup power
supply using a single NiCd cell. It includes a 1.2V boost
converter, an intelligent 2-stage battery charger, auto-
matic backup switching and a microprocessor reset gen-
erator. The boost converter uses a synchronous switching
architecture to achieve a typical efficiency of 70%, ensur-
ing maximum backup lifetime from a small NiCd cell.
The on-chip NiCd charger uses an internal gas gauge to
minimize fast recharge time and prevent overcharging of
the backup cell. The LTC1558 also provides a user pro-
grammable trickle charge current to compensate for self
discharge losses in the backup cell.
The LTC1558’s automatic backup switching architecture
requires minimum intervention from the host system and
provides feedback to the host to minimize system loading
in the backup state. Its internal V
CC
fault detector and reset
generator eliminate the need for a separate microproces-
sor supervisory chip in most applications.
The LTC1558 is available in an SO-8, 16-lead GN or SO
package.
APPLICATIO
S
U
I
Notebook Computers
I
Palmtop Computers/PDAs
I
Portable Instruments
I
Battery-Powered Systems
TYPICAL APPLICATIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
LOAD CURRENT (mA)
0
0
B
50
150
200
250
350
400
450
1558 TA02
100
300
10
25
30
5
15
20
V
CC
= 3.3V
V
= 3.78V
NiCd CELL
CAPACITY = 110mAHrs
Backup Time
vs 3.3V Output Load Current
C1
1
μ
F
1.2V
NiCd
BACKUP
**BATTERY
MAIN
BATTERY
4.5V TO 10V
R1
14k
R2
100k
LOAD CURRENT
3A AT NORMAL MODE
30mA AT BACKUP MODE
LTC1558-3.3
SW
L1
22
μ
H*
R4
221k
1%
R3
220k
R5
100k
1%
8
7
6
5
2
1
RESET
S1
Q1
Si4431DY
1558 TA01
3
4
V
CC
V
BAK
BACKUP
RESET
GND
CTL
FB
+
SUMIDA CD54-22
μ
H
SANYO CADNICA N-110AA
CONSULT LTC1435 DATA SHEET FOR
CIRCUIT APPLICATION INFORMATION
C
IN
100
μ
F
16V
×
2
*
**
V
3.3V
SYSTEM
μ
P
C2
0.1
μ
F
+
LTC1435
SYNCHRONOUS
BUCK REGULATOR
+
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1558CS-3.3 | Backup Battery Controller with Programmable Output |
| LTC1558CS-5 | Backup Battery Controller with Programmable Output |
| LTC1558-3.3 | Backup Battery Controller with Programmable Output |
| LTC1558-5 | Backup Battery Controller with Programmable Output |
| LTC1558CS8-3.3 | Backup Battery Controller with Programmable Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1558CGN-5#PBF | 功能描述:IC BACKUP BATT CNTRLR 5V 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LTC1558CGN-5#TRPBF | 功能描述:IC BACKUP BATT CNTRLR 5V 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LTC1558CS-3.3 | 功能描述:IC BACKUP BATT CNTRLR3.3V 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:61 系列:- 功能:電源管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:4.35 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:22-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:22-DFN（6x3）裸露焊盤 包裝:管件 |
| LTC1558CS-3.3#PBF | 功能描述:IC BACKUP BATT CNTRLR3.3V 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
| LTC1558CS-3.3#TRPBF | 功能描述:IC BACKUP BATT CNTRLR3.3V 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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