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參數(shù)資料
| 型號(hào)： | LT1930 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter |
| 中文描述： | 恒定電流/恒定電壓1.4MHz的升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 190K |
| 代理商： | LT1930 |
1
LT1930/LT1930A
1A, 1.2MHz/2.2MHz,
Step-Up DC/DC Converters
APPLICATIU
FEATURES
DESCRIPTIOU
The LT
1930 and LT1930A
are the industry’s highest
power SOT-23 switching regulators. Both include an
internal 1A, 36V switch allowing high current outputs to be
generated in a small footprint. The LT1930 switches at
1.2MHz, allowing the use of tiny, low cost and low height
capacitors and inductors. The faster LT1930A switches at
2.2MHz, enabling further reductions in inductor size.
Complete regulator solutions approaching one tenth of a
square inch in area are achievable with these devices.
Multiple output power supplies can now use a separate
regulator for each output voltage, replacing cumbersome
quasi-regulated approaches using a single regulator and
custom transformers.
A constant frequency internally compensated current mode
PWM architecture results in low, predictable output noise
that is easy to filter. Low ESR ceramic capacitors can be
used at the output, further reducing noise to the millivolt
level. The high voltage switch on the LT1930/LT1930A is
rated at 36V, making the device ideal for boost converters
up to 34V as well as for single-ended primary inductance
converter (SEPIC) and flyback designs. The LT1930 can
generate 5V at up to 480mA from a 3.3V supply or 5V at
300mA from four alkaline cells in a SEPIC design.
The LT1930/LT1930A are available in the 5-lead ThinSOT
package.
TYPICAL APPLICATIOU
in ThinSOT
I
1.2MHz Switching Frequency (LT1930)
I
2.2MHz Switching Frequency (LT1930A)
I
Low V
CESAT
Switch: 400mV at 1A
I
High Output Voltage: Up to 34V
I
5V at 480mA from 3.3V Input (LT1930)
I
12V at 250mA from 5V Input (LT1930A)
I
Wide Input Range: 2.6V to 16V
I
Uses Small Surface Mount Components
I
Low Shutdown Current: <1
μ
A
I
Low Profile (1mm) ThinSOT
TM
Package
I
Pin-for-Pin Compatible with the LT1613
Figure 1. 5V to 12V, 300mA Step-Up DC/DC Converter
I
TFT-LCD Bias Supply
I
Digital Cameras
I
Cordless Phones
I
Battery Backup
I
Medical Diagnostic Equipment
I
Local 5V or 12V Supply
I
External Modems
I
PC Cards
I
xDSL Power Supply
Efficiency
GND
V
IN
SW
SHDN
FB
V
IN
5V
4
5
1
3
D1
L1
10
μ
H
2
R1
113k
LT1930
1930/A F01
C2
4.7
μ
F
C3*
10pF
C1
2.2
μ
F
R2
13.3k
V
OUT
12V
300mA
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R EMK316BJ475ML
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
*OPTIONAL
SHDN
LOAD CURRENT (mA)
0
E
70
75
80
400
1930 TA01
65
60
50
100
200
300
55
90
85
V
IN
= 5V
V
IN
= 3.3V
, LTC and LT are registered trademarks of Linear Technology Corporation
ThinSOT is a trademark of Linear Technology Corporation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1930A | 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters |
| LT1930AES5 | 1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters |
| LT1933ES6 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1933IS6 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1933 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1930/LT1930A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN |
| LT1930A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad DCDC Converter for Triple Outputs TFT Supply Plus LED Driver |
| LT1930AES5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A, 1.2MHz/2.2MHz, Step-Up DC/DC Converters |
| LT1930AES5#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.45V to 16V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.45V to 16V 5-Pin TSOT-23 Bulk 制造商:Linear Technology 功能描述:IC STEP-UP DC/DC CONVERTER 5-SOT-23 制造商:Linear Technology 功能描述:IC, STEP-UP DC/DC CONVERTER, 5-SOT-23 制造商:Linear Technology 功能描述:IC, STEP-UP DC/DC CONVERTER, 5-SOT-23; Primary Input Voltage:16V; No. of Outputs:1; Output Voltage:34V; Output Current:250mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT1930AES5#TR | 功能描述:IC REG BOOST ADJ 1A TSOT23-5 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 |
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