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參數(shù)資料
型號(hào): LT1317CMS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-SO 0 to 70
中文描述: SWITCHING REGULATOR, 720 kHz SWITCHING FREQ-MAX, PDSO8
封裝: PLASTIC, MSOP-8
文件頁數(shù): 1/16頁
文件大小: 447K
代理商: LT1317CMS8
1
LT1317/LT1317B
Micropower, 600kHz PWM
DC/DC Converters
DESCRIPTIO
N
U
The LT
1317/LT1317B are micropower, fixed frequency
step-up DC/DC converters that operate over a wide input
voltage range of 1.5V to 12V. The LT1317 features auto-
matic shifting to power saving Burst Mode
TM
operation at
light loads. High efficiency is maintained over a broad
300
μ
A to 200mA load range. Peak switch current during
Burst Mode operation is kept below 250mA for most
operating conditions which results in low output ripple
voltage, even at high input voltages. The LT1317B does
not shift into Burst Mode operation at light loads, eliminat-
ing low frequency output ripple at the expense of light load
efficiency.
The LT1317/LT1317B contain an internal low-battery de-
tector with a 200mV reference that stays alive when the
device goes into shutdown.
No-load quiescent current of the LT1317 is 100
μ
A and
shuts down to 30
μ
A. The internal NPN power switch
handles a 500mA current with a voltage drop of just
300mV.
The LT1317/LT1317B are available in MS8 and SO-8
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
I
100
μ
A Quiescent Current
I
Operates with V
IN
as Low as 1.5V
I
600kHz Fixed Frequency Operation
I
Starts into Full Load
I
Low-Battery Detector Active in Shutdown
I
Automatic Burst Mode Operation at
Light Load (LT1317)
I
Continuous Switching at Light Loads (LT1317B)
I
Low V
CESAT
Switch: 300mV at 500mA
I
Pin for Pin Compatible with the LT1307/LT1307B
I
Cellular Telephones
I
Cordless Telephones
I
Pagers
I
GPS Receivers
I
Battery Backup
I
Portable Electronic Equipment
I
Glucose Meters
I
Diagnostic Medical Instrumentation
APPLICATIO
S
U
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
Figure 1. 2-Cell to 3.3V Boost Converter
V
IN
LBI
SW
FB
LT1317
L1
10
μ
H
D1
LBO
GND
SHDN
V
C
SHUTDOWN
R
C
33k
R2*
604k
1%
3.3V
200mA
R1
1M
1%
C
3.3nF
1317 F01
C1
47
μ
F
C2
47
μ
F
2
CELLS
D1: MBR0520
L1: SUMIDA CD43-100
* FOR 5V OUTPUT, R2 = 332k, 1%
+
+
2-Cell to 3.3V Converter Efficiency
LOAD CURRENT (mA)
50
E
60
70
80
90
0.3
10
100
1000
1317 TA01
40
1
3V
IN
1.65V
IN
2.2V
IN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1317CMS8#PBF 功能描述:IC REG BOOST ADJ 0.5A 8MSOP 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(biāo)準(zhǔn)包裝:250 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 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON(1.45x1) 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
LT1317CMS8#TR 功能描述:IC REG BOOST ADJ 0.5A 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓(升壓) 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式,混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
LT1317CMS8#TRPBF 功能描述:IC REG BOOST ADJ 0.5A 8MSOP 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(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓(升壓) 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式,混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
LT1317CS8 功能描述:IC REG BOOST ADJ 0.5A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓(升壓) 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式,混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
LT1317CS8#PBF 功能描述:IC REG BOOST ADJ 0.5A 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(biāo)準(zhǔn)包裝:250 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 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON(1.45x1) 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2
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