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參數(shù)資料
| 型號： | LT1308IS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single Cell High Current Micropower 600kHz Boost DC/DC Converter |
| 中文描述： | SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 266K |
| 代理商： | LT1308IS8 |
1
LT1308
Single Cell High Current
Micropower 600kHz
Boost DC/DC Converter
January 1998
Final Electrical Specifications
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
TYPICAL APPLICATIO
N
U
DESCRIPTIO
N
U
The LT
1308 is a micropower, fixed frequency boost
DC/DC converter that operates from an input voltage as
low as 1V. Capable of delivering 5V at load current of 1A
from a single Li-Ion cell, the LT1308 also features power
saving Burst Mode operation at light loads. High efficiency
is maintained over a broad 1mA to 1A load range.
The device contains a low-battery detector with a 200mV
reference and shuts down to less than 5
μ
A quiescent
current. No-load quiescent current is 100
μ
A and the
internal NPN power switch handles a 2A current with a
voltage drop of just 300mV.
High frequency 600kHz switching allows the use of small,
surface mount components. The LT1308’s current mode
architecture provides fast response to load and line varia-
tions. The device is available in an 8-lead SO package.
FEATURES
I
5V at 1A from a Single Li-Ion Cell
I
3.3V at 300mA from a Single NiCd Cell
I
Low Quiescent Current: 100
μ
A
I
Operates with V
IN
as Low as 1V
I
Fixed Frequency Operation: 600kHz
I
Current Mode PWM Delivers Low Output Ripple
I
Guaranteed Start-Up into Full Load
I
Low Shutdown Current: 3
μ
A
I
Low-Battery Comparator
I
Automatic Burst Mode
TM
Operation at Light Load
I
Low V
CESAT
Switch: 300mV at 2A
APPLICATIO
S
U
I
GSM Terminals
I
Digital Cameras
I
Answer-Back Pagers
I
Cordless Telephones
I
DECT Phones
I
GPS Receivers
I
Battery Backup Supplies
Burst Mode is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Figure 1. Single Li-Ion Cell to 5V/1A DC/DC Converter
Converter Efficiency
LOAD CURRENT (mA)
1
E
95
90
85
80
75
70
65
10
100
1000
1308 F01a
V
IN
= 4.2V
V
IN
= 3.6V
V
IN
= 3V
V
IN
SW
FB
LT1308
L1
4.7
μ
H
4.2V TO 3V
D1
LBO
LBI
R
C
47k
C
22nF
R2
100k
5V
1A
R1
301k
1308F01
C1
10
μ
F
C2
100
μ
F
Li-Ion
CELL
V
C
GND
SHDN
C1:CERAMIC
C2:AVX TPS SERIES
D1:INTERNATIONAL RECTIFIER 10BQ015
L1:COILTRONICS CTX5-1
COILCRAFT DO3316-472
+
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1308IS8#PBF | 功能描述:IC REG BOOST 5V 1A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT1308IS8#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1V to 6V 8-Pin SOIC N T/R |
| LT1308IS8#TRPBF | 功能描述:IC REG BOOST 5V 1A 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1309 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:500kHz Micropower DC/DC Converter for Flash Memory |
| LT1309CS8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:500kHz Micropower DC/DC Converter for Flash Memory |
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