參數(shù)資料
型號： LT1505
廠商： Linear Technology Corporation
英文描述： Constant-Current/Voltage High Efficiency Battery Charger
中文描述： Constant-Current/Voltage高效電池充電器
文件頁數(shù)： 1/16頁
文件大?。?/td> 214K
代理商： LT1505
1
LT1505
TYPICAL APPLICATIO
N
U
DESCRIPTIOU
The LT
1505 PWM battery charger controller fast charges
multiple battery chemistries including lithium-ion (Li-Ion),
nickel-metal-hydride (NiMH) and nickel-cadmium (NiCd)
using constant-current or constant-voltage control. Maxi-
mum current can be easily programmed by resistors or a
DAC. The constant-voltage output can be selected for 3 or 4
series Li-Ion cells with 0.5% accuracy.
A third control loop limits the current drawn from the AC
adapter during charging*. This allows simultaneous opera-
tion of the equipment and fast battery charging without over-
loading the AC adapter.
The LT1505 can charge batteries ranging from 2.5V to 20V
with dropout voltage as low as 0.5V. Synchronous
N-channel FETs switching at 200kHz give high efficiency
and allow small inductor size. A diode is not required in
series with the battery because the charger automatically
enters a 10
μ
A sleep mode when the wall adapter is un-
plugged. A logic output indicates Li-Ion full charge when
current drops to 20% of the programmed value.
The LT1505 is available in a 28-pin SSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
*US Patent No. 5,723,970
FEATURES
APPLICATIU
Constant-Current/Voltage
High Efficiency Battery Charger
Figure 1. Low Dropout 4A Lithium-Ion Battery Charger
I
Simple Charging of Li-Ion, NiMH and NiCd Batteries
I
Very High Efficiency: Up to 97%
I
Precision 0.5% Charging Voltage Accuracy
I
Preset Battery Voltages: 12.3V, 12.6V,
16.4V and 16.8V
I
5% Charging Current Accuracy
I
Charging Current Programmed by Resistor or DAC
I
0.5V Dropout Voltage, Duty Cycle > 99.5%
I
AC Adapter Current Limit* Maximizes Charging Rate
I
Flag Indicates Li-Ion Charge Completion
I
Auto Shutdown with Adapter Removal
I
Only 10
μ
A Battery Drain When Idle
I
Synchronizable Up to 280kHz
I
Notebook Computers
I
Portable Instruments
I
Chargers for Li-Ion, NiMH, NiCd and Lead Acid
Rechargeable Batteries
5
C
PROG
μ
F
R
4.93k
1%
300
C7
0.68
μ
F
C6
0.1
μ
F
C3
2.2
μ
F
C
OUT
22
μ
F
25V
×
2
C2
0.68
μ
F
L1
15
μ
H
V
BAT
12.6V
BATTERY
NOTE: DBODY IS THE BODY DIODE OF M3
C
: SANYO OS-CON
L1: SUMIDA CDRH127-150
(CAN BE FROM 10
μ
H TO 30
μ
H)
M1
Si4412
M2
Si4412
D4
MBRS140
D2
MMSD4148T1
D3
MMSD4148T1
R7
500
100k
R5
4k
R1
1k
R6
4k
*BODY DIODE
POLARITY MUST
BE AS SHOWN
R
S4
0.025
M3
Si4435
DBODY*
TO
SYSTEM POWER
V
IN
(FROM
ADAPTER)
R
S1
0.025
1505 F01
0.33
μ
F
R
X4
3k
R
S2
200
1%
R
S3
200
1%
C
IN
47
μ
F
35V
C1
1
μ
F
C4
0.1
μ
F
BAT2 BAT
SENSE
LT1505
V
CC
BOOST
BOOSTC
SPIN
PGND
AGND
4.1V
4.2V
V
FB
3 CELL
PROG
V
C
BGATE
COMP1
CAP
FLAG
SHDN
SYNC
UV
INFET
SW
TGATE
GBIAS
CLP
CLN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1505CG 功能描述:IC BATT CHARGER CONST I/V 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR)
LT1505CG#PBF 功能描述:IC BATT CHARGER CONST I/V 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR)
LT1505CG#TR 功能描述:IC CHARGER BATT CONST V/I 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR)
LT1505CG#TRPBF 功能描述:IC BATT CHARGER CONST I/V 28SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR)
LT1505CG-1 功能描述:IC BATT CHARGER CONST I/V 28SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學:堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:帶卷 (TR)
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