參數(shù)資料
型號(hào): MIC2571
廠商: Micrel Semiconductor,Inc.
英文描述: Single-Cell Switching Regulator(微功率升壓開關(guān)穩(wěn)壓器 (采用一個(gè)鎳氫或鋰電池 ))
中文描述: 單細(xì)胞開關(guān)穩(wěn)壓器(微功率升壓開關(guān)穩(wěn)壓器(采用一個(gè)鎳氫或鋰電池))
文件頁(yè)數(shù): 1/11頁(yè)
文件大?。?/td> 126K
代理商: MIC2571
MIC2571
Micrel
4-76
1997
MIC2571
Single-Cell Switching Regulator
Preliminary Information
General Description
Micrel’s MIC2571 is a micropower boost switching regulator
that operates from one alkaline, nickel-metal-hydride cell, or
lithium cell.
The MIC2571 accepts a positive input voltage between 0.9V
and 15V. Its typical no-load supply current is 120
μ
A.
The MIC2571 is available in selectable fixed output or adjust-
able output versions. The MIC2571-1 can be configured for
2.85V, 3.3V, or 5V by connecting one of three separate
feedback pins to the output. The MIC2571-2 can be config-
ured for an output voltage ranging between its input voltage
and 36V, using an external resistor network.
The MIC2571 has a fixed switching frequency of 20kHz. An
external SYNC connection allows the switching frequency to
be synchronized to an external signal.
The MIC2571 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 0.3 in
2
area.
All versions are available in an 8-lead MSOP with an operat-
ing range from –40
°
C to +85
°
.
Typical Applications
Features
Operates from a single-cell supply
0.9V to 15V operation
120
μ
A typical quiescent current
Complete regulator fits 0.3 in
2
area
2.85V/3.3V/5V selectable output voltage (MIC2571-1)
Adjustable output up to 36V (MIC2571-2)
1A current limited pass element
Frequency synchronization input
8-lead MSOP package
Applications
Pagers
LCD bias generator
Battery-powered, hand-held instruments
Palmtop computers
Remote controls
Detectors
Battery Backup Supplies
Single-Cell to 5V DC-to-DC Converter
IN
SW
GND
2
MIC2571-1
C2
47μF
16V
5V/5mA
C1*
47μF
16V
1V to1.5V
1 Cell
2.85V
3.3V
5V
4
5
6
1
7
8
L1
150μH
SYNC
D1
MBR0530
* Needed if battery is
4" from MIC2571
Circuit size < 0.3 in
2
excluding C1
Single-Cell to 3.3V DC-to-DC Converter
IN
SW
GND
2
MIC2571-1
C2
47μF
16V
3.3V/8mA
C1*
47μF
16V
1V to1.5V
1 Cell
2.85V
3.3V
5V
4
5
6
1
7
8
L1
150μH
SYNC
D1
MBR0530
* Needed if battery is
4" from MIC2571
Circuit size < 0.3 in
2
excluding C1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC2571-1BMM 功能描述:IC REG BOOST 2.85V/3.3V/5V 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:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):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(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12
MIC2571-1BMM TR 功能描述:IC REG BOOST 2.85V/3.3V/5V 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:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):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(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12
MIC2571-1YMM 功能描述:直流/直流開關(guān)調(diào)節(jié)器 One Cell Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC2571-1YMM TR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 One Cell Boost Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MIC2571-2BMM 功能描述:IC REG BOOST ADJ 1A 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:20 系列:SIMPLE SWITCHER® 類型:降壓(降壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):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(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12