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參數資料
型號: MIC2570-1BM
廠商: MICREL INC
元件分類: 穩壓器
英文描述: Two-Cell Switching Regulator Preliminary Information
中文描述: 1 A SWITCHING REGULATOR, 20 kHz SWITCHING FREQ-MAX, PDSO8
封裝: SOIC-8
文件頁數: 1/14頁
文件大?。?/td> 178K
代理商: MIC2570-1BM
MIC2570
Micrel
4-62
1997
MIC2570
Two-Cell Switching Regulator
Preliminary Information
General Description
Micrel’s MIC2570 is a micropower boost switching regulator
that operates from two alkaline, two nickel-metal-hydride
cells, or one lithium cell.
The MIC2570 accepts a positive input voltage between 1.3V
and 15V. Its typical no-load supply current is 130
μ
A.
The MIC2570 is available in selectable fixed output or adjust-
able output versions. The MIC2570-1 can be configured for
2.85V, 3.3V, or 5V by connecting one of three separate
feedback pins to the output. The MIC2570-2 can be config-
ured for an output voltage ranging between its input voltage
and 36V, using an external resistor network.
The MIC2570 has a fixed switching frequency of 20kHz. An
external SYNC connection allows the switching frequency to
be synchronized to an external signal.
The MIC2570 requires only four components (diode, induc-
tor, input capacitor and output capacitor) to implement a
boost regulator. A complete regulator can be constructed in
a 0.6 in
2
area.
All versions are available in an 8-lead SOIC with an operating
range from –40
°
C to +85
°
.
Typical Applications
Features
Operates from a two-cell supply
1.3V to 15V operation
130
μ
A typical quiescent current
Complete regulator fits 0.6 in
2
area
2.85V/3.3V/5V selectable output voltage (MIC2570-1)
Adjustable output up to 36V (MIC2570-2)
1A current limited pass element
Frequency synchronization input
8-lead SOIC package
Applications
LCD bias generator
Glucose meters
Single-cell lithium to 3.3V or 5V converters
Two-cell alkaline to
±
5V converters
Two-cell alkaline to –5V converters
Battery-powered, hand-held instruments
Palmtop computers
Remote controls
Detectors
Battery Backup Supplies
Two-Cell to 5V DC-to-DC Converter
IN
SW
GND
2
MIC2570-1
C2
220μF
10V
5V/100mA
C1
100μF
10V
2.0V–3.1V
2 AA Cells
2.85V
3.3V
5V
4
5
6
1
7
8
L1
47μH
SYNC
D1
MBRA140
Single-Cell Lithium to 3.3V/80mARegulator
GND
3.3V
SW
MIC2570
SYNC
7
5
1
2
8
IN
C3
330μF
6.3V
V
OUT
3.3V/80mA
2.5V to 4.2V
1 Li Cell
C1
100μF
10V
D1
MBRA140
L1
50μH
L1
C2
100μF
10V
U1
1
2
3
4
相關PDF資料
PDF描述
MIC2570-2BM Two-Cell Switching Regulator Preliminary Information
MIC2571 Single-Cell Switching Regulator(微功率升壓開關穩壓器 (采用一個鎳氫或鋰電池 ))
MIC2582 Single Channel Hot Swap Controllers
MIC2582-JBM Single Channel Hot Swap Controllers
MIC2583 Single Channel Hot Swap Controllers
相關代理商/技術參數
參數描述
MIC2570-1BM TR 功能描述:IC REG BOOST 2.85V/3.3V/5V 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12
MIC2570-1YM 功能描述:直流/直流開關調節器 Two Cell Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC2570-1YM TR 功能描述:直流/直流開關調節器 Two Cell Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC2570-2BM 功能描述:IC REG BOOST ADJ 1A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12
MIC2570-2BM TR 功能描述:IC REG BOOST ADJ 1A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12
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