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參數(shù)資料
| 型號： | LT3460ES5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.3MHz Step-Up DC/DC Converter in SC70 and ThinSOT |
| 中文描述： | 0.6 A SWITCHING REGULATOR, 1700 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | PLASTIC, TSOT-23, 5 PIN |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 211K |
| 代理商： | LT3460ES5 |
LT3460
6
3460f
margin, C
F
should be chosen so that the midpoint fre-
quency between the zero and the pole is at the cross over
frequency.
With C
F
= 20pF, the feedback loop Bode plot is reshaped
as shown in Figure 4. The phase margin is about 60
°
.
OPERATIOU
60
50
40
30
20
10
0
–10
–20
–30
–40
P
90
45
0
–45
–90
–135
–180
–225
–270
–315
–360
FREQUENCY (kHz)
PHASE
GAIN
1
G
10
100
1000
3460 F04
R1
R2
GND
C
F
C2
L1
D1
C1
V
OUT
V
IN
SHUTDOWN
+
+
R1
R2
GND
C
F
C2
L1
D1
C1
V
OUT
V
IN
SHUTDOWN
3460 F05
+
+
(SOT-23 PACKAGE)
(SC70 PACKAGE)
Figure 5. Suggested Layout
The feed-forward capacitor increases the gain at high
frequency. The feedback loop therefore needs to have
enough attenuation at the switching frequency to reject the
switching noise. Additional internal compensation com-
ponents have taken this into consideration.
For most of the applications of LT3460, the output capaci-
tor ESR zero is at very high frequency and can be ignored.
If a low frequency ESR zero exists, for example, when a
high-ESR Tantalum capacitor is used at the output, the
phase margin may be enough even without a feed-forward
capacitor. In these cases, the feed-forward capacitor should
not be added because it may cause the feedback loop to
not have enough attenuation at the switching frequency.
Layout Hints
The high speed operation of the LT3460 demands careful
attention to board layout. You will not get advertised
performance with careless layout. Figure 5 shows the
recommended component placement.
Figure 4.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT3460ES5#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BOOST 1.3MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, 1.3MHZ, TSOT-23-5; Primary Input Voltage:16V; No. of Outputs:1; Output Current:420mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:5-TSOT-23 ;RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BOOST, 1.3MHZ, TSOT-23-5; Primary Input Voltage:16V; No. of Outputs:1; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:5-TSOT-23 ;RoHS Compliant: Yes |
| LT3460ES5#TR | 功能描述:IC REG BOOST ADJ 0.3A TSOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關:900kHz 電流 - 輸出:100mA 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:SOT-23-6 細型，TSOT-23-6 包裝:帶卷 (TR) 供應商設備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LT3460ES5#TRM | 功能描述:IC REG BOOST ADJ 0.3A TSOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關:900kHz 電流 - 輸出:100mA 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:SOT-23-6 細型，TSOT-23-6 包裝:帶卷 (TR) 供應商設備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LT3460ES5#TRMPBF | 功能描述:IC REG BOOST ADJ 0.3A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:High Efficiency Current Mode Switching Regulators CMOS LDO Regulators 特色產(chǎn)品:BD91x Series Step-Down Regulators 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:兩者兼有 輸出數(shù):2 輸出電壓:3.3V，0.8 V ~ 2.5 V 輸入電壓:4.5 V ~ 5.5 V PWM 型:電流模式 頻率 - 開關:1MHz 電流 - 輸出:1.5A 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:20-VFQFN 裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:VQFN020V4040 產(chǎn)品目錄頁面:1373 (CN2011-ZH PDF) 其它名稱:BD9152MUV-E2TR |
| LT3460ES5#TRPBF | 功能描述:IC REG BOOST ADJ 0.3A TSOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關:900kHz 電流 - 輸出:100mA 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:SOT-23-6 細型，TSOT-23-6 包裝:帶卷 (TR) 供應商設備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
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